JPH0830134A - Heat fixing-device - Google Patents
Heat fixing-deviceInfo
- Publication number
- JPH0830134A JPH0830134A JP6161956A JP16195694A JPH0830134A JP H0830134 A JPH0830134 A JP H0830134A JP 6161956 A JP6161956 A JP 6161956A JP 16195694 A JP16195694 A JP 16195694A JP H0830134 A JPH0830134 A JP H0830134A
- Authority
- JP
- Japan
- Prior art keywords
- fixing roller
- fixing
- cleaning member
- roller
- release agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Fixing For Electrophotography (AREA)
- Paper Feeding For Electrophotography (AREA)
- Cleaning In Electrography (AREA)
- Electrophotography Configuration And Component (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、電子写真複写機等の
画像記録装置の熱ローラを用いて例えば紙やＯＨＰシー
トなどの被定着媒体にトナー像を熱定着させる熱定着装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat fixing device for thermally fixing a toner image on a fixing medium such as paper or OHP sheet by using a heat roller of an image recording device such as an electrophotographic copying machine. .
【０００２】[0002]
【従来の技術】従来、例えば電子写真複写機の転写紙上
に転写されたトナー像を、加熱装置を備えた一対のロー
ラニップ部に通すことでトナー像を定着させるようにし
た熱定着装置において、転写紙通過時のトナーがローラ
表面に移る（オフセットという）ことを防ぐようにした
ものとして、特公平１−２８９４１号公報に開示された
発明や実開昭６１−７３１６５号公報に開示された考案
がある。2. Description of the Related Art Conventionally, for example, in a thermal fixing device configured to fix a toner image by passing the toner image transferred onto a transfer paper of an electrophotographic copying machine through a pair of roller nip portions equipped with a heating device, The invention disclosed in Japanese Examined Patent Publication No. 1-28941 and the invention disclosed in Japanese Utility Model Laid-Open No. 61-73165 are designed to prevent toner (transfer) from being transferred to the roller surface when the paper passes. is there.
【０００３】特公平１−２８９４１号公報に開示された
画像形成方法の熱定着装置（定着器１００）は、図１７
に示すように、筒状の金属よりなる芯金１０３の外周に
テフロン樹脂あるいはシリコン樹脂等の被膜１０４を形
成してなる熱ローラ１０１と、この熱ローラ１０１の内
部空間に配設したヒータ１０２と、この熱ローラ１０１
に圧接するように配設した、筒状の金属よりなる芯金１
０６の外周面にシリコン樹脂の被膜１０７を形成してな
る圧接ローラ１０５と、熱ローラ１０１に対接されたク
リーニングローラ１０８とよりなっている。The heat fixing device (fixing device 100) of the image forming method disclosed in Japanese Patent Publication No. 1-28941 is shown in FIG.
As shown in FIG. 3, a heat roller 101 having a core metal 103 made of a tubular metal and a coating 104 made of Teflon resin or silicon resin formed on the outer periphery thereof, and a heater 102 arranged in the internal space of the heat roller 101. , This heat roller 101
A core metal 1 made of a cylindrical metal and arranged so as to be pressed against
A pressing roller 105 having a silicon resin coating 107 formed on the outer peripheral surface of 06 and a cleaning roller 108 which is in contact with the heat roller 101.
【０００４】そして、ポリエステル樹脂をバインダーと
するトナーにより、例えば感光ドラムを介して転写紙１
０９にトナー像を形成し、このトナー像の形成された転
写紙１０９を通路Ｐに沿って熱ローラ１０１と圧接ロー
ラ１０５との対接領域を通過させ、ここにおいて熱ロー
ラ１０１の熱によりトナーを溶融して軟化し、トナー像
を転写紙１０９に定着させる。この時、熱ローラ１０１
の表面に転移したトナーの一部は、熱ローラ１０１に接
しているクリーニングローラ１０８によってクリーニン
グされ、次回の定着時における熱ローラ１０１の表面に
付着したトナーの転写紙１０９への転移を防止してい
る。Then, the transfer paper 1 is transferred by a toner having a polyester resin as a binder, for example, through a photosensitive drum.
A toner image is formed on the toner image 09, and the transfer paper 109 on which the toner image is formed is passed along the path P through the contact area between the heat roller 101 and the pressure contact roller 105, where the toner is heated by the heat of the heat roller 101. The toner image is fused and softened, and the toner image is fixed on the transfer paper 109. At this time, the heat roller 101
Part of the toner transferred to the surface of the heat roller 101 is cleaned by the cleaning roller 108 in contact with the heat roller 101 to prevent transfer of the toner attached to the surface of the heat roller 101 to the transfer paper 109 at the time of the next fixing. There is.
【０００５】また、実開昭６１−７３１６５号公報に開
示された熱定着器は、図１８に示すように、内部に定着
器ヒータ１１３を有する定着上ローラ１１１と、下ロー
ラ１１２と、オフセット防止オイル（以下、オイルとい
う）が入っているオイル皿１１４と、多孔質体シート１
１５と、オイル皿ヒータ１１６と、温度センサ１１７
と、温調回路１１８とからなっている。Further, the thermal fixing device disclosed in Japanese Utility Model Laid-Open No. 61-73165, as shown in FIG. 18, has an upper fixing roller 111 having a fixing device heater 113 therein, a lower roller 112, and an offset prevention. An oil tray 114 containing oil (hereinafter referred to as oil) and the porous sheet 1
15, an oil tray heater 116, and a temperature sensor 117
And a temperature control circuit 118.
【０００６】そして、電源を投入すると、定着器ヒータ
１１３が温調を開始して上下ローラ１１１，１１２の温
度がスタンバイ温度まで上昇し、コピー動作開始指令が
入力されると、これと同時にオイル皿ヒータ１１６がオ
イルを加熱し、オイルはローラ温度より高温となり、多
孔質体シート１１５の連続微細気孔から上ローラ１１１
に塗布されて上ローラ１１１の表面のオフセットを防止
する。コピー動作終了と同時にオイル皿ヒータ１１６を
切るとオイル温度は低下し、オイルの流出は停止され
る。When the power is turned on, the fixing device heater 113 starts temperature control and the temperature of the upper and lower rollers 111 and 112 rises to the standby temperature. When a copy operation start command is input, at the same time, the oil tray The heater 116 heats the oil, the temperature of the oil becomes higher than the roller temperature, and the continuous fine pores of the porous sheet 115 cause the upper roller 111 to rise.
Is applied to prevent offset of the surface of the upper roller 111. When the oil tray heater 116 is turned off at the same time when the copying operation is completed, the oil temperature is lowered and the oil outflow is stopped.
【０００７】[0007]
【発明が解決しようとする課題】上記のような従来の熱
定着装置は、クリーニングローラ１０８またはオフセッ
ト防止オイル等によって熱ローラ１０１（上ローラ１１
１）の表面の清掃およびオフセットの防止を行ってい
る。しかしながら、クリーニングローラ１０８のように
熱ローラ１０１の表面に従動回転接触させてトナーの清
掃を行う場合、微量のオフセットトナーの清掃には有効
であるが、多量のオフセットトナーの清掃においては、
その清掃能力が低下して清掃時間が非常に長くなってし
まうなどの問題があった。そこで、例えばフェルトなど
の清掃部材を熱ローラ１０１に摩擦接触させてオフセッ
トを防止しようとするものが考えられるが、清掃能力は
高くなるものの熱ローラ１０１の被膜１０４の表面を摩
擦劣化させ、熱ローラ１０１の寿命を著しく低下させた
り、清掃部材では常に同じ面でトナーの汚れを清掃して
いるため、汚れが一定面に集中して清掃能力の低下が早
まってしまうなどのおそれがあった。In the conventional heat fixing device as described above, the heat roller 101 (upper roller 11) is formed by the cleaning roller 108 or offset preventing oil.
The surface of 1) is cleaned and offset is prevented. However, when cleaning the toner by rotating the surface of the heat roller 101 drivenly in contact with it like the cleaning roller 108, it is effective in cleaning a small amount of offset toner, but in cleaning a large amount of offset toner,
There is a problem that the cleaning ability is lowered and the cleaning time becomes very long. Therefore, for example, a cleaning member such as felt may be brought into frictional contact with the heat roller 101 to prevent the offset, but the cleaning ability is increased, but the surface of the coating 104 of the heat roller 101 is deteriorated due to friction, and the heat roller 101 is heated. There is a possibility that the life of 101 is significantly shortened, and that the cleaning member always cleans the dirt of the toner on the same surface, so that the dirt is concentrated on a certain surface and the cleaning ability is deteriorated earlier.
【０００８】また、オフセット防止オイルでオフセット
を防止する場合では、上ローラ１１１にオフセット防止
オイルを塗布する塗布部材の多孔質体シート１１５にも
トナーが付着して塗布面に目づまりを引き起こし、塗布
能力を著しく低下させてオフセット防止能力も低下させ
てしまうなどの問題があった。Further, when the offset prevention oil is used to prevent the offset, the toner adheres to the porous sheet 115 of the coating member for coating the upper roller 111 with the offset prevention oil to cause clogging on the coating surface, and thus the coating ability. There is a problem that the offset prevention capability is also reduced by significantly reducing
【０００９】さらに、上ローラ１１１の表面が被定着媒
体、下ローラ１１２および多孔質体シート１１５等の摩
擦により機械的特性が低下し、ある許容定着枚数を越え
て定着を行うと著しく定着画像が劣化するため、上ロー
ラ１１１や多孔質体シート１１５等の交換が必要とな
り、同様にオフセット防止オイルの補充も必要となる。
このような上ローラ１１１等の交換やオフセット防止オ
イルの補充の時期が一定でない場合は、そのメンテナン
ス性が悪い熱定着装置となってしまっていた。Further, the mechanical characteristics of the surface of the upper roller 111 deteriorate due to friction of the medium to be fixed, the lower roller 112, the porous sheet 115, etc., and when fixing is performed beyond a certain allowable number of fixed images, a fixed image is remarkably formed. Since it deteriorates, it is necessary to replace the upper roller 111, the porous sheet 115, and the like, and it is also necessary to replenish the offset prevention oil.
If the replacement of the upper roller 111 and the like and the replenishment of the offset prevention oil are not constant in time, the heat fixing device has a poor maintainability.
【００１０】また、被定着媒体の面積と印字面積との比
である印字率の違いによりオフセットするトナーの量が
変化するので、被定着媒体の印字率が高いとオフセット
するトナーの量も多くなり、オフセット防止オイルを塗
布するだけではオフセットを防止できないこともあっ
た。Further, since the amount of toner to be offset changes depending on the difference in the printing rate, which is the ratio of the area of the medium to be fixed to the printing area, the amount of toner to be offset increases as the printing rate of the medium to be fixed is high. However, there were cases where offset could not be prevented simply by applying offset prevention oil.
【００１１】さらに、熱ローラ１０１を加熱するヒータ
１０２の温度制御に異常が起こった場合は、熱ローラ１
０１に接しているクリーニングローラ１０８等が熱変形
したり燃焼してしまうおそれがあり、熱定着装置の安全
性に問題があった。Further, when an abnormality occurs in the temperature control of the heater 102 for heating the heat roller 101, the heat roller 1
Since the cleaning roller 108 and the like in contact with 01 may be thermally deformed or burned, there was a problem in safety of the heat fixing device.
【００１２】この発明は、上記のような課題を解決する
ためになされたもので、オフセットの防止を確実に行う
とともに、機械的寿命が長く、安全で信頼性の高い熱定
着装置を提供することを目的としたものである。The present invention has been made in order to solve the above problems, and provides a safe and highly reliable thermal fixing device which surely prevents offset, has a long mechanical life, and has a long mechanical life. It is intended for.
【００１３】[0013]
【課題を解決するための手段】この発明に係る熱定着装
置は、ヒータを有する定着ローラと、定着ローラに圧接
するように配設された圧接ローラと、定着ローラの近傍
に配設され離形剤が収容された離形剤容器と、離形剤容
器内の離形剤を定着ローラに塗布する塗布部材と、定着
ローラの表面を清掃する清掃部材と、塗布部材および清
掃部材を定着ローラにそれぞれ接触または離間させる離
接手段とを備えたものである。SUMMARY OF THE INVENTION A thermal fixing device according to the present invention includes a fixing roller having a heater, a pressure contact roller arranged so as to be in pressure contact with the fixing roller, and a releasing member disposed near the fixing roller. A releasing agent container containing the agent, an applying member for applying the releasing agent in the releasing agent container to the fixing roller, a cleaning member for cleaning the surface of the fixing roller, and an applying member and a cleaning member for the fixing roller. And a contacting / separating means for respectively contacting or separating.
【００１４】また、離接手段を、定着ローラを回転させ
る駆動手段に連動させたものである。さらに、離接手段
は、離形剤容器に設けられこの離形剤容器を傾斜させる
傾斜手段を含み、傾斜手段を、ロータリダンパにより構
成したものである。また、離接手段により離形剤容器を
傾斜させて塗布部材を離間させることにより、塗布部材
への離形剤の供給を遮断するものである。Further, the separating / contacting means is interlocked with the driving means for rotating the fixing roller. Further, the contacting / disconnecting means includes an inclining means provided on the release agent container for inclining the release agent container, and the inclining means is constituted by a rotary damper. Further, the release agent container is tilted by the contacting / separating means to separate the coating member, thereby interrupting the supply of the release agent to the coating member.
【００１５】この発明に係る熱定着装置は、定着ローラ
の駆動手段により、定着ローラの定着動作時に塗布部材
を定着ローラに接触させるものである。また、定着ロー
ラの駆動手段により、定着ローラの回転方向を定着動作
時と反対方向に回転させることにより塗布部材を定着ロ
ーラから離間させるものである。さらに、定着ローラの
駆動手段により、定着ローラの回転方向を定着動作時と
反対方向に回転させることにより清掃部材を定着ローラ
に接触させるものである。In the thermal fixing device according to the present invention, the applying member is brought into contact with the fixing roller during the fixing operation of the fixing roller by the fixing roller driving means. Further, the fixing roller driving unit rotates the rotation direction of the fixing roller in the direction opposite to that during the fixing operation, thereby separating the coating member from the fixing roller. Further, the cleaning member is brought into contact with the fixing roller by rotating the fixing roller in the opposite direction to that during the fixing operation by the fixing roller driving means.
【００１６】この発明に係る熱定着装置は、定着ローラ
および圧接ローラの下流側に被定着媒体の排出検知手段
を設けたものである。また、清掃部材をローラ状に形成
したものである。さらに、定着動作時に排出検知手段が
被定着媒体のジャミングを検知した時は定着ローラの駆
動手段により定着ローラを反対方向に回転させるもので
ある。また、清掃部材に、排出検知手段によりジャミン
グを検知した時または定着ローラの清掃時において定着
ローラに接触した回転方向規制手段を設けたもの、また
は、定着ローラに接触した清掃部材に定着ローラの回転
速度と異なる回転速度を与える手段を設けたものであ
る。さらに、回転方向規制手段をワンウェイクラッチに
より構成したもの、あるいは、清掃部材に定着ローラの
回転速度と異なる回転速度を与える手段をロータリダン
パにより構成したものである。In the thermal fixing device according to the present invention, the discharge detecting means for the medium to be fixed is provided on the downstream side of the fixing roller and the pressure contact roller. Further, the cleaning member is formed in a roller shape. Further, when the discharge detecting means detects jamming of the medium to be fixed during the fixing operation, the fixing roller driving means rotates the fixing roller in the opposite direction. Further, the cleaning member is provided with a rotation direction regulating unit that comes into contact with the fixing roller when jamming is detected by the discharge detecting unit or when the fixing roller is cleaned, or the cleaning member that comes into contact with the fixing roller rotates the fixing roller. A means for providing a rotation speed different from the speed is provided. Further, the rotation direction regulating means is constituted by a one-way clutch, or the means for giving the cleaning member a rotation speed different from the rotation speed of the fixing roller is constituted by a rotary damper.
【００１７】この発明に係る熱定着装置は、被定着媒体
の定着動作開始準備の際に、塗布部材を定着ローラから
離間させて保持し、定着ローラを回転させて清掃動作中
に清掃部材を回転することなく定着ローラの表面に接触
させる手段と、清掃動作開始前または清掃後に清掃部材
を数度回転させてこの清掃部材の同じ面を連続して使用
しないようにする手段とを備えたものである。In the thermal fixing device according to the present invention, when preparing to start the fixing operation of the medium to be fixed, the applying member is held apart from the fixing roller and the fixing roller is rotated to rotate the cleaning member during the cleaning operation. Without contact with the surface of the fixing roller, and means for rotating the cleaning member several times before or after the cleaning operation to prevent the same surface of the cleaning member from being continuously used. is there.
【００１８】この発明に係る熱定着装置は、被定着媒体
がジャミングを起こした際に、ジャミングを検知すると
同時に塗布部材を定着ローラから離間させて保持し、定
着ローラを回転させてジャミング中に清掃部材を回転す
ることなく定着ローラの表面に接触させる手段と、ジャ
ミング処理前またはジャミング処理後に清掃部材を数度
回転させてこの清掃部材の同じ面を連続して使用しない
ようにする手段とを備えたものである。In the heat fixing device according to the present invention, when jamming occurs in the medium to be fixed, the jamming is detected, and at the same time, the application member is held apart from the fixing roller, and the fixing roller is rotated to clean during the jamming. A means for contacting the surface of the fixing roller without rotating the member, and a means for rotating the cleaning member several degrees before or after the jamming process so that the same surface of the cleaning member is not continuously used. It is a thing.
【００１９】この発明に係る熱定着装置は、被定着媒体
の定着動作開始準備の際に、塗布部材を定着ローラから
離間させて保持し、清掃部材を定着ローラの表面に接触
させて定着ローラを回転させて清掃部材を定着ローラに
従動回転させ、若しくは定着ローラと異なる回転速度で
回転させまたは定着ローラと反対方向に回転させる手段
を備えたものである。In the heat fixing device according to the present invention, when preparing to start the fixing operation of the medium to be fixed, the applying member is held apart from the fixing roller, and the cleaning member is brought into contact with the surface of the fixing roller to move the fixing roller. There is provided means for rotating the cleaning member to follow the fixing roller, rotating the cleaning member at a different rotation speed from the fixing roller, or rotating the cleaning member in a direction opposite to the fixing roller.
【００２０】この発明に係る熱定着装置は、被定着媒体
がジャミングを起こした際に、ジャミングを検知すると
同時に塗布部材を定着ローラから離間させて保持し、清
掃部材を定着ローラの表面に接触させて定着ローラを回
転させて清掃部材を定着ローラに従動回転させ、若しく
は定着ローラと異なる回転速度で回転させまたは定着ロ
ーラと反対方向に回転させる手段を備えたものである。In the heat fixing device according to the present invention, when the medium to be fixed is jammed, the jamming is detected, and at the same time, the application member is held apart from the fixing roller, and the cleaning member is brought into contact with the surface of the fixing roller. There is provided means for rotating the fixing roller to rotate the cleaning member following the fixing roller, rotating the cleaning member at a different rotation speed from the fixing roller, or rotating the cleaning member in a direction opposite to the fixing roller.
【００２１】この発明に係る熱定着装置は、被定着媒体
の定着動作開始準備の際に、塗布部材を定着ローラから
離間させて清掃部材を定着ローラに接触させ、定着ロー
ラを回転させて付着物の清掃を行った後、塗布部材およ
び清掃部材を同時に定着ローラに接触させて離形剤を塗
布するとともに、過剰に付着した離形剤を清掃部材によ
り除去してこの離形剤を均一に塗布するものである。In the heat fixing device according to the present invention, when preparing to start the fixing operation of the medium to be fixed, the coating member is separated from the fixing roller, the cleaning member is brought into contact with the fixing roller, and the fixing roller is rotated to attach the adhered matter. After cleaning, the application member and the cleaning member are brought into contact with the fixing roller at the same time to apply the release agent, and the excess release agent is removed by the cleaning member and the release agent is evenly applied. To do.
【００２２】この発明に係る熱定着装置は、被定着媒体
の印字率の検出および印字制御を行う印字制御手段を設
けたものである。また、印字制御手段の信号に基づいて
清掃部材の支持体を駆動する駆動手段を設けたものであ
る。さらに、清掃部材の駆動手段を、ロータリソレノイ
ドにより構成したもの、または、ほぼ中間部に突出部を
有し一端がばねにより付勢されて突出部とばねとの間に
おいて離形剤容器に回動可能に軸支された清掃部材の支
持体と、クラッチを介して定着ローラの駆動手段に連結
され、印字制御手段により制御されて支持体の突出部に
係止するカムとにより構成したものである。The thermal fixing device according to the present invention is provided with a printing control means for detecting the printing rate of the medium to be fixed and controlling the printing. Further, drive means for driving the support of the cleaning member based on the signal of the print control means is provided. Further, the drive means of the cleaning member is constituted by a rotary solenoid, or has a projecting portion at an approximately middle portion and one end is biased by a spring to rotate the release agent container between the projecting portion and the spring. The cleaning member is rotatably supported by a supporting member, and a cam is connected to a fixing roller driving means through a clutch and is controlled by the printing control means to be locked to a protruding portion of the supporting member. .
【００２３】この発明に係る熱定着装置は、印字制御手
段により検出した印字率が高い被定着媒体の定着を行う
時に、印字制御手段からの信号により清掃部材の駆動手
段を駆動して清掃部材を定着ローラに従動回転させると
ともに、塗布部材を定着ローラに接触させるものであ
る。また、印字制御手段により検出した印字率が低い被
定着媒体の定着を行う時に、清掃部材を定着ローラから
離間させるとともに、塗布部材を定着ローラに接触させ
るものである。さらに、印字制御手段により検出した印
字率に対応して、清掃部材の駆動手段による清掃部材の
定着ローラへの押圧力およびこの押圧力の反作用による
塗布部材の定着ローラへの押圧力を変化させるものであ
る。In the heat fixing device according to the present invention, when fixing the medium to be fixed having a high printing rate detected by the print control means, the cleaning member drive means is driven by the signal from the print control means to cause the cleaning member to be cleaned. The fixing roller is driven to rotate and the application member is brought into contact with the fixing roller. Further, when fixing the medium to be fixed having a low printing rate detected by the print control means, the cleaning member is separated from the fixing roller and the application member is brought into contact with the fixing roller. Further, the pressing force of the cleaning member to the fixing roller by the cleaning member driving unit and the pressing force of the applying member to the fixing roller due to the reaction of the pressing force are changed in accordance with the printing rate detected by the printing control unit. Is.
【００２４】この発明に係る熱定着装置は、定着ローラ
の温度検知手段を設け、この温度検知手段からの信号に
より定着ローラの温度が所定の温度を超えた時に塗布部
材および清掃部材を定着ローラから離間させる手段を備
えたものである。The thermal fixing device according to the present invention is provided with the temperature detecting means of the fixing roller, and when the temperature of the fixing roller exceeds a predetermined temperature by the signal from the temperature detecting means, the applying member and the cleaning member are removed from the fixing roller. It is provided with a means for separating them.
【００２５】この発明に係る熱定着装置は、離形剤容器
を熱応動手段により支持し、定着ローラの温度が所定の
温度を超えた時は熱応動手段の作動により塗布部材およ
び清掃部材を定着ローラから離間させるものである。ま
た、熱応動手段を、形状記憶合金、または、熱溶融する
金属若しくは樹脂とばねとによって構成したものであ
る。In the heat fixing device according to the present invention, the releasing agent container is supported by the heat responsive means, and when the temperature of the fixing roller exceeds a predetermined temperature, the heat responsive means operates to fix the coating member and the cleaning member. It is to be separated from the roller. Further, the heat responsive means is constituted by a shape memory alloy, or a heat-melting metal or resin, and a spring.
【００２６】この発明に係る熱定着装置は、塗布部材に
離形剤供給部材を介して離形剤容器内の離形剤を供給す
るものである。また、清掃部材に離形剤供給部材を介し
て離形剤容器内の離形剤を供給するものである。The heat fixing device according to the present invention supplies the release agent in the release agent container to the coating member via the release agent supply member. Further, the release agent in the release agent container is supplied to the cleaning member via the release agent supply member.
【００２７】この発明に係る熱定着装置は、定着ロー
ラ、離形剤容器、塗布部材および清掃部材を１つの筐体
に取り付けたものである。In the heat fixing device according to the present invention, the fixing roller, the release agent container, the coating member and the cleaning member are attached to one housing.
【００２８】[0028]
【作用】熱定着装置の状態、例えば定着動作準備時、ジ
ャミングが発生した時、印字制御手段により検知した印
字率が高い被定着媒体の定着を行う時、印字制御手段に
より検知した印字率が低い被定着媒体の定着を行う時、
または、定着ローラが所定の温度を超えた時などに基づ
いて、塗布部材および清掃部材を選択的に定着ローラに
接触または離間させることにより、定着ローラ、塗布部
材および清掃部材の摩擦劣化等を最小限に抑えて機械的
寿命を長く維持させるとともに、清掃能力およびオフセ
ット防止を向上させ、装置の安全性および信頼性を高め
る。The printing rate detected by the printing control means is low when the state of the thermal fixing device, for example, during jamming preparation, when jamming occurs, or when the fixing medium has a high printing rate detected by the printing control means. When fixing the medium to be fixed,
Alternatively, frictional deterioration of the fixing roller, the coating member and the cleaning member is minimized by selectively bringing the coating member and the cleaning member into contact with or away from the fixing roller based on, for example, when the fixing roller exceeds a predetermined temperature. It keeps the mechanical life to a minimum to improve its cleaning ability and offset prevention, and enhances the safety and reliability of the equipment.
【００２９】また、離接手段を、定着ローラを回転させ
る駆動手段に連動させ、離接手段は、離形剤容器に設け
られこの離形剤容器を傾斜させる傾斜手段を含み、傾斜
手段を、ロータリダンパにより構成することにより、簡
単な構造で塗布部材および清掃部材の定着ローラへの接
触または離間を容易に行える。さらに、離接手段により
離形剤容器を傾斜させて塗布部材を離間させることによ
って塗布部材への離形剤の供給を遮断することにより、
必要時以外での離形剤の塗布や定着ローラへの液垂れ等
を防止し、塗布部材および離形剤の消耗を抑える。Further, the separating / contacting means is interlocked with the driving means for rotating the fixing roller, and the separating / contacting means includes an inclining means provided in the releasing agent container for inclining the releasing agent container. By using the rotary damper, the application member and the cleaning member can be easily brought into contact with or separated from the fixing roller with a simple structure. Further, by inclining the release agent container by the contacting / separating means and separating the coating member, the supply of the release agent to the coating member is blocked,
It prevents the release agent from being applied and the liquid from dripping onto the fixing roller when it is not needed, and suppresses the wear of the application member and the release agent.
【００３０】この発明に係る熱定着装置は、定着ローラ
の温度検知手段を設け、この温度検知手段からの信号に
より定着ローラの温度が所定の温度を超えた時に塗布部
材および清掃部材を定着ローラから離間させる手段を備
える、あるいは、離形剤容器を熱応動手段により支持
し、定着ローラの温度が所定の温度を超えた時は熱応動
手段の作動により塗布部材および清掃部材を定着ローラ
から離間させるようにすることにより、塗布部材および
清掃部材の熱変形および燃焼等を防止し、装置の安全性
を高める。The thermal fixing device according to the present invention is provided with the temperature detecting means of the fixing roller, and when the temperature of the fixing roller exceeds a predetermined temperature by the signal from the temperature detecting means, the applying member and the cleaning member are removed from the fixing roller. A separating means is provided, or the release agent container is supported by the thermal responsive means, and when the temperature of the fixing roller exceeds a predetermined temperature, the applying member and the cleaning member are separated from the fixing roller by the operation of the thermal responsive means. By doing so, thermal deformation and burning of the coating member and the cleaning member are prevented, and the safety of the device is improved.
【００３１】この発明に係る熱定着装置は、塗布部材に
離形剤供給部材を介して離形剤容器内の離形剤を供給す
る、あるいは、清掃部材に離形剤供給部材を介して離形
剤容器内の離形剤を供給することにより、離形剤を塗布
部材へ円滑に供給してオフセット防止を確実に行うとと
もに、清掃能力を低下させることなく定着ローラおよび
清掃部材の摩擦劣化を抑え、機械的寿命を長く維持させ
る。In the heat fixing device according to the present invention, the release agent in the release agent container is supplied to the coating member via the release agent supply member, or the cleaning member is released via the release agent supply member. By supplying the release agent in the shape agent container, the release agent can be smoothly supplied to the application member to prevent the offset, and the deterioration of the friction of the fixing roller and the cleaning member can be prevented without lowering the cleaning ability. Hold down and maintain a long mechanical life.
【００３２】この発明に係る熱定着装置は、定着ロー
ラ、離形剤容器、塗布部材および清掃部材を１つの筐体
に取り付けることにより、定着ローラの交換および離形
剤の補充などが容易となり、メンテナンス性が向上す
る。In the heat fixing device according to the present invention, the fixing roller, the releasing agent container, the coating member and the cleaning member are attached to one housing, so that the fixing roller can be easily replaced and the releasing agent can be replenished. Maintainability is improved.
【００３３】[0033]
実施例１．図１はこの発明の第１の実施例の原理図、図
２はその要部の正面図、左右側面図および平面図であ
る。図において、１は表面に例えばシリコンゴムなどの
被膜２が被覆された円筒状の定着ローラで、例えばアル
ミニウムなどの金属材料で構成されており、その定着ロ
ーラ軸１ａは熱定着装置の上部筐体Ａのフレームに回転
可能に取り付けられ、定着ローラ軸１ａの中空空間部に
は例えばハロゲンランプの如きヒータ３が配設されてい
る。また、定着ローラ軸１ａの一方の端部には外部駆動
源によって駆動される駆動ギア４からの回転力を定着ロ
ーラ１に伝達する定着ローラギア５が設けられている。
６はその圧接ローラ軸６ａに接続されたスプリング７に
よって上方に付勢され、定着ローラ１に圧接するように
配設された円筒状の圧接ローラで、定着ローラ１に従動
回転する。Example 1. FIG. 1 is a principle view of a first embodiment of the present invention, and FIG. 2 is a front view, left and right side views and a plan view of a main part thereof. In the figure, reference numeral 1 denotes a cylindrical fixing roller whose surface is coated with a coating 2 such as silicon rubber, which is made of a metal material such as aluminum. The fixing roller shaft 1a has an upper casing of a thermal fixing device. The fixing roller shaft 1a is rotatably attached to the frame A, and a heater 3 such as a halogen lamp is provided in the hollow space of the fixing roller shaft 1a. Further, at one end of the fixing roller shaft 1a, a fixing roller gear 5 for transmitting the rotational force from the driving gear 4 driven by an external drive source to the fixing roller 1 is provided.
Reference numeral 6 denotes a cylindrical pressure contact roller which is urged upward by a spring 7 connected to the pressure contact roller shaft 6a and arranged so as to be in pressure contact with the fixing roller 1, and is driven to rotate by the fixing roller 1.
【００３４】８は定着ローラ１の上部に配設された例え
ばシリコンオイルなどの離形剤であるオフセット防止液
９が収容されているオフセット防止液容器、１０はオフ
セット防止液容器８の一方の側面内側から側面外側、底
面の一部にかけて覆うように設けられた例えばフェルト
などからなるオフセット防止液供給部材、１１はオフセ
ット防止液供給部材１０の端部に配置された例えば四フ
ッ化エチレン樹脂などの多孔質材料により構成されたオ
フセット防止液塗布部材で、その一部が定着ローラ１に
当接され、オフセット防止液供給部材１０に浸透したオ
フセット防止液９をオフセット防止液塗布部材１１を介
して定着ローラ１に塗布する。Reference numeral 8 denotes an offset prevention liquid container for accommodating an offset prevention liquid 9 which is a mold release agent such as silicon oil disposed above the fixing roller 1, and 10 denotes one side surface of the offset prevention liquid container 8. An offset prevention liquid supply member made of, for example, felt is provided so as to cover from the inside to the outside of the side surface and a part of the bottom surface. Reference numeral 11 denotes, for example, tetrafluoroethylene resin arranged at the end of the offset prevention liquid supply member 10. An offset prevention liquid coating member made of a porous material, a part of which is in contact with the fixing roller 1, and the offset prevention liquid 9 that has penetrated into the offset prevention liquid supply member 10 is fixed via the offset prevention liquid coating member 11. Apply to roller 1.
【００３５】１２はオフセット防止液容器８の側面と支
持軸８ａの軸受部との間に取り付けられ、オフセット防
止液容器８を傾斜させる容器傾斜制御アクチュエータ
で、ここではロータリダンパＣが用いられている。この
ロータリダンパＣは図３に示すように、オフセット防止
液容器８の側面に取り付けられたケース１２ａと、この
内部に収容されたオイル１２ｂと、支持軸８ａの端部に
設けられた撹拌翼１２ｃとからなっており、撹拌翼１２
ｃを回転させるとケース１２ａ内のオイル１２ｂが撹拌
されて撹拌翼１２ｃの回転方向と同じ方向に回りだし、
オイル１２ｂの撹拌方向にケース１２ａが従動回動する
ように構成されている。そして、支持軸８ａのロータリ
ダンパＣの近傍には、定着ローラギア５からの回転を中
間ギア１４を介して伝達されるギア１３が設けられてお
り、このギア１３の回転によって支持軸８ａが回転する
と、撹拌翼１２ｃが回転してケース１２ａ内のオイル１
２ｂを撹拌し、オイル１２ｂの撹拌方向にケース１２ａ
を従動回動させている、つまりオフセット防止液容器８
を回動して傾斜させている。なお、ロータリダンパＣは
オイル１２ｂの粘性抵抗を利用して動力を伝達している
ので、支持軸８ａの回転の起動および停止のタイミング
はずれており、伝達される回転力は回転速度に比例す
る。また、オフセット防止液容器８の支持軸８ａおよび
ロータリダンパＣは、後述する清掃部材１５側がオフセ
ット防止液塗布部材１１側よりも重くなるように偏位し
た位置に取り付けられている。Reference numeral 12 denotes a container tilt control actuator which is mounted between the side surface of the offset prevention liquid container 8 and the bearing portion of the support shaft 8a and tilts the offset prevention liquid container 8. Here, a rotary damper C is used. . As shown in FIG. 3, the rotary damper C includes a case 12a attached to the side surface of the offset prevention liquid container 8, oil 12b contained therein, and a stirring blade 12c provided at the end of the support shaft 8a. And the stirring blade 12
When c is rotated, the oil 12b in the case 12a is agitated and starts to rotate in the same direction as the rotating direction of the stirring blade 12c,
The case 12a is configured to be drivenly rotated in the stirring direction of the oil 12b. A gear 13 for transmitting the rotation from the fixing roller gear 5 via the intermediate gear 14 is provided near the rotary damper C of the support shaft 8a. When the rotation of the gear 13 rotates the support shaft 8a. , The stirring blade 12c rotates and the oil 1 in the case 12a
2b is stirred, and the case 12a is stirred in the stirring direction of the oil 12b.
Is driven to rotate, that is, the offset prevention liquid container 8
Is tilted by rotating. Since the rotary damper C uses the viscous resistance of the oil 12b to transmit power, the start and stop timings of the rotation of the support shaft 8a are deviated, and the transmitted rotational force is proportional to the rotational speed. Further, the support shaft 8a and the rotary damper C of the offset prevention liquid container 8 are attached at positions deviated so that the cleaning member 15 side described later is heavier than the offset prevention liquid application member 11 side.
【００３６】１５は定着ローラ１の表面を清掃する清掃
部材で、例えばフェルトローラなどからなっており、オ
フセット防止液容器８の他方の側面側に支持体回転軸１
６ａを介して回動可能に装着された支持体１６の一端
に、清掃部材１５の軸１５ａの両端部に設けられた清掃
部材１５の回転方向を制御する清掃部材回転制御アクチ
ュエータ１７を介して回転可能に取り付けられている。
なお、清掃部材回転制御アクチュエータ１７において、
ここではワンウェイクラッチＤが用いられており、図４
（ａ）に示すように、ワンウェイクラッチＤの外輪１７
ａが清掃部材１５の軸１５ａに対して反時計回りに回転
すると、ばね１７ｂのスプリング作用によってころ１７
ｃは外輪カム面１７ｄの噛み合い位置に進み、外輪カム
面１７ｄと軸１５ａとのくさび作用で軸１５ａを回転駆
動し、図４（ｂ）に示すように、外輪１７ａを時計回り
に回転すると、軸１５ａは外輪１７ａに対して相対的に
反時計回りに回転することになり、ころ１７ｃは外輪カ
ム面１７ｄから離れ、外輪１７ａは軸１５ａに対して空
転するように構成されている。Reference numeral 15 denotes a cleaning member for cleaning the surface of the fixing roller 1, which is composed of, for example, a felt roller, and is provided on the other side of the offset prevention liquid container 8 on the side of the support rotating shaft 1.
6a to one end of a support member 16 rotatably attached to the cleaning member 15, and a cleaning member rotation control actuator 17 for controlling the rotation direction of the cleaning member 15 provided at both ends of a shaft 15a of the cleaning member 15. It is possible to install.
In the cleaning member rotation control actuator 17,
Here, the one-way clutch D is used, and as shown in FIG.
As shown in (a), the outer ring 17 of the one-way clutch D
When a rotates counterclockwise with respect to the shaft 15a of the cleaning member 15, the spring action of the spring 17b causes the roller 17 to rotate.
c advances to the meshing position of the outer ring cam surface 17d, and the outer ring cam surface 17d and the shaft 15a are driven to rotate the shaft 15a by a wedge action. As shown in FIG. 4B, when the outer ring 17a is rotated clockwise, The shaft 15a is rotated counterclockwise relative to the outer ring 17a, the roller 17c is separated from the outer ring cam surface 17d, and the outer ring 17a is configured to idle with respect to the shaft 15a.
【００３７】１８は支持体１６の他端に取り付けられ清
掃部材１５の位置を制御する清掃部材位置制御アクチュ
エータで、後述する被定着媒体の印字制御を行い、被定
着媒体の印字率に基づいて清掃部材位置制御アクチュエ
ータ１８に信号を送って清掃部材１５の位置を制御する
プリントコントローラ１９によって制御される。なお、
清掃部材位置制御アクチュエータ１８において、ここで
はロータリソレノイドＥが用いられており、図５に示す
ように、固定部分（ケース１８ａ、ベース１８ｂ、コイ
ル１８ｃ）と可動部分（アーマチュア１８ｄ、ハブ１８
ｅ、シャフト１８ｆ）からなり、コイル１８ｃを励磁す
ることにより直接一定の角度回転するものである。Reference numeral 18 denotes a cleaning member position control actuator which is attached to the other end of the support member 16 and controls the position of the cleaning member 15. The cleaning member position control actuator controls printing of a fixing medium, which will be described later, and cleans the fixing medium based on the printing rate of the fixing medium. It is controlled by the print controller 19 which sends a signal to the member position control actuator 18 to control the position of the cleaning member 15. In addition,
In the cleaning member position control actuator 18, a rotary solenoid E is used here, and as shown in FIG. 5, a fixed portion (case 18a, base 18b, coil 18c) and a movable portion (armature 18d, hub 18).
e, a shaft 18f), and directly rotates a certain angle by exciting the coil 18c.
【００３８】再び図１において、２０はトナー、２１は
トナー２０が定着される例えば紙やＯＨＰシートなどの
被定着媒体で、矢印Ｆの方向に搬送される。２２は定着
ローラ１の表面に当接または近接して配置され、定着ロ
ーラ１の表面温度を検知する例えばサーミスタの如き温
度センサ、２３は抵抗値比較回路とリレーなどから構成
された温度制御部で、温度センサ２２により検知した定
着ローラ１の表面温度に基づいて定着ローラ１のヒータ
３を制御し、定着ローラ１の表面温度を一定に保持して
いる。２４は定着ローラ１と圧接ローラ６との間を通っ
て反対側に排出された被定着媒体２１が正規の排出出口
を通過したかを検知する排出センサで、被定着媒体２１
が正規の搬送経路を辿らずに装置内に滞留するなどのジ
ャミングの発生等を検知する。In FIG. 1 again, 20 is toner, and 21 is a medium to be fixed on which the toner 20 is fixed, such as paper or OHP sheet, which is conveyed in the direction of arrow F. Reference numeral 22 denotes a temperature sensor such as a thermistor, which is disposed in contact with or close to the surface of the fixing roller 1 to detect the surface temperature of the fixing roller 1, and 23 is a temperature control unit including a resistance value comparison circuit and a relay. The heater 3 of the fixing roller 1 is controlled based on the surface temperature of the fixing roller 1 detected by the temperature sensor 22 to keep the surface temperature of the fixing roller 1 constant. Reference numeral 24 denotes an ejection sensor for detecting whether the medium to be fixed 21 ejected to the opposite side through between the fixing roller 1 and the pressure contact roller 6 has passed through the regular ejection outlet.
Detects the occurrence of jamming such as staying in the device without following the regular transport route.
【００３９】なお、この熱定着装置は、定着ローラ１、
オフセット防止液容器８、オフセット防止液供給部材１
０、オフセット防止液塗布部材１１および清掃部材１５
等からなる上部筐体Ａと、圧接ローラ６および温度セン
サ２２等からなる下部筐体Ｂとが分離可能に連結されて
構成されている。In this heat fixing device, the fixing roller 1,
Offset prevention liquid container 8, offset prevention liquid supply member 1
0, offset prevention liquid application member 11 and cleaning member 15
And an upper casing A made up of the pressure contact roller 6 and the temperature sensor 22 are detachably connected to each other.
【００４０】このように構成したこの実施例において
は、電源（図示せず）を投入すると、図６に示すよう
に、定着ローラ１は外部駆動源によって駆動された駆動
ギア４および定着ローラギア５によって時計回りに回転
し、同時にヒータ３も発熱して定着ローラ１を加熱し、
温度センサ２２および温度制御部２３によって定着ロー
ラ１の表面温度が一定に保持されるように加熱制御され
る。そして、中間ギア１４は反時計回り、容器傾斜制御
アクチュエータ１２であるロータリダンパＣのギア１３
は時計回りに回転してロータリダンパＣの撹拌翼１２ｃ
を時計回りに回転させ、オフセット防止液容器８を時計
回りに回動させる。これにより、オフセット防止液塗布
部材１１は下方（矢印Ｇの方向）に移動して定着ローラ
１に当接し、清掃部材１５は上方（矢印Ｈの方向）に移
動して定着ローラ１から離間する位置までオフセット防
止液容器８が傾斜される。この時、オフセット防止液容
器８内のオフセット防止液９はオフセット防止液供給部
材１０およびオフセット防止液塗布部材１１を介して定
着ローラ１の表面に塗布される。In this embodiment thus constituted, when the power source (not shown) is turned on, the fixing roller 1 is driven by the drive gear 4 and the fixing roller gear 5 driven by the external drive source as shown in FIG. It rotates clockwise, and at the same time, the heater 3 also generates heat to heat the fixing roller 1,
Heating is controlled by the temperature sensor 22 and the temperature controller 23 so that the surface temperature of the fixing roller 1 is kept constant. Then, the intermediate gear 14 rotates counterclockwise, and the gear 13 of the rotary damper C that is the container tilt control actuator 12.
Rotates clockwise and the stirring blade 12c of the rotary damper C
Is rotated clockwise, and the offset prevention liquid container 8 is rotated clockwise. As a result, the offset prevention liquid application member 11 moves downward (in the direction of arrow G) and comes into contact with the fixing roller 1, and the cleaning member 15 moves upward (in the direction of arrow H) and moves away from the fixing roller 1. The offset prevention liquid container 8 is tilted up to. At this time, the offset prevention liquid 9 in the offset prevention liquid container 8 is applied to the surface of the fixing roller 1 via the offset prevention liquid supply member 10 and the offset prevention liquid application member 11.
【００４１】オフセット防止液９の塗布が開始される
と、熱定着装置は定着動作可能状態となり、例えば感光
ドラムを介してトナー像が形成された被定着媒体２１が
熱定着装置に搬送され、定着ローラ１と圧接ローラ６と
の間を通ると、被定着媒体２１上のトナー２０が定着ロ
ーラ１の熱によって溶融されて軟化し、トナー像が定着
される。そして、定着ローラ１の表面はオフセット防止
液９の塗布によりオフセットが防止される。When the application of the offset prevention liquid 9 is started, the heat fixing device is ready for fixing operation, and the medium to be fixed 21 on which the toner image is formed is conveyed to the heat fixing device through the photosensitive drum, for example. When passing between the roller 1 and the pressure roller 6, the toner 20 on the medium to be fixed 21 is melted and softened by the heat of the fixing roller 1, and the toner image is fixed. Then, the surface of the fixing roller 1 is prevented from being offset by applying the offset prevention liquid 9.
【００４２】この時、プリントコントローラ１９は、被
定着媒体２１の面積と被定着媒体２１に定着されたトナ
ー像面積との比である印字率を検出しており、例えば印
字率が低い場合は清掃部材位置制御アクチュエータ１８
であるロータリソレノイドＥへの通電を行わず、図６に
示すように、清掃部材１５を定着ローラ１から離間した
位置に保持させ、オフセット防止液塗布部材１１等によ
るオフセット防止を行う。一方、印字率が高い場合は図
７に示すように、清掃部材位置制御アクチュエータ１８
（ロータリソレノイドＥ）に通電して清掃部材１５を定
着ローラ１に接触させる。そして、ワンウェイクラッチ
Ｄによって反時計回りにのみ回転する清掃部材１５の押
圧力と定着ローラ１の回転による摩擦力によって、清掃
部材１５は従動回転しながら定着ローラ１の表面に転移
したトナー２０を清掃する。なお、オフセット防止液塗
布部材１１等によるオフセット防止液９の塗布も行いオ
フセットを防止する。At this time, the print controller 19 detects the printing rate, which is the ratio of the area of the medium to be fixed 21 to the area of the toner image fixed on the medium to be fixed 21, and for example, when the printing rate is low, cleaning is performed. Member position control actuator 18
6, the cleaning member 15 is held at a position separated from the fixing roller 1, and the offset prevention liquid application member 11 and the like prevent the offset. On the other hand, when the printing rate is high, as shown in FIG. 7, the cleaning member position control actuator 18
The (rotary solenoid E) is energized to bring the cleaning member 15 into contact with the fixing roller 1. Then, due to the pressing force of the cleaning member 15 that rotates only counterclockwise by the one-way clutch D and the frictional force caused by the rotation of the fixing roller 1, the cleaning member 15 is driven to rotate and cleans the toner 20 transferred to the surface of the fixing roller 1. To do. The offset prevention liquid 9 is also applied by the offset prevention liquid application member 11 or the like to prevent the offset.
【００４３】このように、印字率にしたがってオフセッ
ト量が変化するので、プリントコントローラ１９は印字
率の値に基づいて清掃部材位置制御アクチュエータ１８
の駆動を制御し、清掃部材１５の配置位置および清掃部
材１５の定着ローラ１に対する押圧力を制御して定着ロ
ーラ１への摩擦力を調整し、定着ローラ１の清掃効率を
高めることができる。また、清掃部材１５の定着ローラ
１に対する押圧力の反作用が支持体１６、オフセット防
止液容器８およびオフセット防止液供給部材１０等を介
してオフセット防止液塗布部材１１の定着ローラ１に対
する押圧力として伝達されるので、清掃部材位置制御ア
クチュエータ１８に通電する電流量を増減することによ
り、清掃部材１５およびオフセット防止液塗布部材１１
の押圧力を変化させても定着ローラ１への清掃効率を高
めることができる。さらに、プリントコントローラ１９
は印字率に基づいて定着ローラ１の回転速度を制御して
オフセット防止液塗布部材１１の定着ローラ１に対する
押圧力変化させても、定着ローラ１への清掃効率を高め
ることができる。As described above, since the offset amount changes according to the print rate, the print controller 19 determines the cleaning member position control actuator 18 based on the value of the print rate.
Of the cleaning member 15 and the pressing force of the cleaning member 15 against the fixing roller 1 are controlled to adjust the frictional force to the fixing roller 1 to improve the cleaning efficiency of the fixing roller 1. Further, the reaction of the pressing force of the cleaning member 15 on the fixing roller 1 is transmitted as the pressing force of the offset prevention liquid application member 11 to the fixing roller 1 via the support 16, the offset prevention liquid container 8, the offset prevention liquid supply member 10, and the like. Therefore, the cleaning member 15 and the offset prevention liquid application member 11 are controlled by increasing or decreasing the amount of current supplied to the cleaning member position control actuator 18.
The cleaning efficiency for the fixing roller 1 can be improved even if the pressing force is changed. Further, the print controller 19
Even if the rotation speed of the fixing roller 1 is controlled on the basis of the printing rate to change the pressing force of the offset prevention liquid application member 11 against the fixing roller 1, the cleaning efficiency for the fixing roller 1 can be improved.
【００４４】次に、熱定着装置における定着動作が終了
して定着ローラ１の清掃を行う場合、図８に示すよう
に、まず、定着ローラ１を駆動ギア４および定着ローラ
ギア５によって反時計回りに回転させる。そして、中間
ギア１４を時計回り、容器傾斜制御アクチュエータ１２
であるロータリダンパＣのギア１３を反時計回りに回転
させてロータリダンパＣの撹拌翼１２ｃを反時計回りに
回転させ、オフセット防止液容器８を反時計回りに回動
させる。これにより、オフセット防止液塗布部材１１は
上方（矢印Ｊの方向）に移動して定着ローラ１から離間
し、清掃部材１５は下方（矢印Ｋの方向）に移動して定
着ローラ１に当接する。この時、オフセット防止液容器
８内のオフセット防止液９の液面がオフセット防止液供
給部材１０に接しなくなり、オフセット防止液９の供給
は断たれる。これにより、オフセット防止液供給部材１
０中に保持できる飽和量を越えたオフセット防止液９
が、オフセット防止液塗布部材１１から定着ローラ１上
に垂れるのを防止することができるとともに、定着ロー
ラ１に付着したトナー２０によるオフセット防止液塗布
部材１１の目詰まりを防ぎ、オフセット防止液塗布部材
１１の寿命を長く保たせることができる。Next, when the fixing operation in the thermal fixing device is finished and the fixing roller 1 is cleaned, the fixing roller 1 is first rotated counterclockwise by the drive gear 4 and the fixing roller gear 5, as shown in FIG. Rotate. Then, the intermediate gear 14 is rotated clockwise to move the container tilt control actuator 12
That is, the gear 13 of the rotary damper C is rotated counterclockwise to rotate the stirring blade 12c of the rotary damper C counterclockwise, and the offset prevention liquid container 8 is rotated counterclockwise. As a result, the offset prevention liquid application member 11 moves upward (in the direction of arrow J) and separates from the fixing roller 1, and the cleaning member 15 moves downward (in the direction of arrow K) and contacts the fixing roller 1. At this time, the liquid level of the offset prevention liquid 9 in the offset prevention liquid container 8 is not in contact with the offset prevention liquid supply member 10, and the supply of the offset prevention liquid 9 is cut off. Thereby, the offset prevention liquid supply member 1
Offset preventive liquid that exceeds the saturation amount that can be retained in 0
Can be prevented from dripping from the offset prevention liquid application member 11 onto the fixing roller 1, and the clogging of the offset prevention liquid application member 11 by the toner 20 adhering to the fixing roller 1 can be prevented, and the offset prevention liquid application member can be prevented. The life of 11 can be kept long.
【００４５】ついで、反時計回りに回転している定着ロ
ーラ１に当接した清掃部材１５は定着ローラ１の回転力
を受けて時計回りに回転しようとするが、清掃部材回転
制御アクチュエータ１７であるワンウェイクラッチＤに
よって時計回りに回転しないように支持されている清掃
部材１５は、回転せずに定着ローラ１に当接し、この状
態で定着ローラ１を一回転以上反時計回りに回転させて
定着ローラ１の表面に転移したトナー２０等を清掃す
る。Then, the cleaning member 15 which is in contact with the fixing roller 1 rotating counterclockwise tries to rotate clockwise by receiving the rotational force of the fixing roller 1, but the cleaning member rotation control actuator 17. The cleaning member 15, which is supported by the one-way clutch D so as not to rotate clockwise, contacts the fixing roller 1 without rotating, and in this state, the fixing roller 1 is rotated counterclockwise for one rotation or more to rotate the fixing roller 1. The toner 20 transferred to the surface of No. 1 is cleaned.
【００４６】清掃が終了すると、駆動ギア４の駆動を停
止させて定着ローラ１の回転を止める。そして、オフセ
ット防止液塗布部材１１を定着ローラ１から離間し、清
掃部材１５を定着ローラ１に当接した状態で次の定着動
作まで待機する。ついで、再び定着動作が開始される
と、上述したように定着ローラ１は時計回りに回転して
容器傾斜制御アクチュエータ１２が定着ローラ１に従動
回転し、オフセット防止液塗布部材１１を定着ローラ１
に当接させ、清掃部材１５を離間させる。そして、オフ
セット防止液塗布部材１１によりオフセット防止液９を
定着ローラ１の表面に塗布してオフセットを防止する。When the cleaning is completed, the driving of the drive gear 4 is stopped to stop the rotation of the fixing roller 1. Then, the offset prevention liquid application member 11 is separated from the fixing roller 1, and the cleaning member 15 is in contact with the fixing roller 1 and stands by until the next fixing operation. Then, when the fixing operation is started again, as described above, the fixing roller 1 rotates clockwise and the container tilt control actuator 12 is rotated by the fixing roller 1 so that the offset prevention liquid application member 11 is fixed to the fixing roller 1.
And the cleaning member 15 is separated. Then, the offset prevention liquid 9 is applied to the surface of the fixing roller 1 by the offset prevention liquid application member 11 to prevent the offset.
【００４７】この時、容器傾斜制御アクチュエータ１２
であるロータリダンパＣのオイル１２ｂの粘性抵抗によ
ってロータリダンパＣが回転駆動を受けてもケース１２
ａ側に回転駆動が即座に伝わりにくい特性、つまり起動
および停止タイミングがずれる特性を持っているので、
この特性により、再び定着動作が開始されて定着ローラ
１が時計回りに回転しても清掃部材１５は即座に定着ロ
ーラ１から離間せず、ある一定時間遅れて離間動作が開
始される。これにより、定着ローラ１が回転動作を開始
して清掃部材１５が定着ローラ１から離間動作を開始す
るまでの間において、定着ローラ１の時計回りの回転力
によって清掃部材１５は反時計回りに数回回転し、次回
の清掃時に同じ面が連続して使用されるのを防止する。At this time, the container tilt control actuator 12
Even if the rotary damper C is rotationally driven by the viscous resistance of the oil 12b of the rotary damper C,
Since it has the characteristic that the rotational drive is not immediately transmitted to the side a, that is, the start and stop timings are shifted,
Due to this characteristic, even if the fixing operation is started again and the fixing roller 1 rotates clockwise, the cleaning member 15 does not immediately separate from the fixing roller 1 and the separation operation starts after a certain time delay. As a result, the cleaning member 15 is rotated counterclockwise by the clockwise rotational force of the fixing roller 1 until the fixing roller 1 starts the rotating operation and the cleaning member 15 starts the separating operation from the fixing roller 1. Rotate twice to prevent continuous use of the same surface during the next cleaning.
【００４８】また、定着動作注においてジャミングが発
生して排出センサ２４によりジャミングを検知した場合
は、定着ローラ１を定着動作時とは反対の反時計回りに
回転させて容器傾斜制御アクチュエータ１２を従動回転
させる。この時、装置内に滞留した被定着媒体２１は定
着ローラ１の回転により搬送されてきた方向へ戻される
ように装置外へ排出される。そして、清掃時と同様に、
清掃部材１５のみを定着ローラ１に当接させて定着ロー
ラ１に過剰に付着したオフセット防止液９および転移し
たトナー２０を清掃する。When jamming occurs during the fixing operation * and jamming is detected by the discharge sensor 24, the fixing roller 1 is rotated counterclockwise, which is the opposite of the fixing operation, and the container tilt control actuator 12 is driven. Rotate. At this time, the medium to be fixed 21 staying in the apparatus is discharged outside the apparatus so as to be returned in the direction in which the medium is conveyed by the rotation of the fixing roller 1. And just like when cleaning
Only the cleaning member 15 is brought into contact with the fixing roller 1 to clean the offset prevention liquid 9 excessively attached to the fixing roller 1 and the transferred toner 20.
【００４９】次に、定着または清掃が終了して熱定着装
置の電源を切ると、オフセット防止液容器８が清掃部材
１５側がオフセット防止液塗布部材１１側より重くなる
ように支持されているので、清掃部材１５とオフセット
防止液容器８の自重によって、オフセット防止液塗布部
材１１が定着ローラ１から離間し、清掃部材１５が定着
ローラ１に当接するような位置にオフセット防止液容器
８が傾斜して停止する。なお、再び電源を投入しても定
着動作の指示がない場合は、オフセット防止液容器８等
はこの状態のまま待機する。また、初めて電源を投入す
る場合は、装置の輸送等において、装置全体が傾けられ
てオフセット防止液９がオフセット防止液塗布部材１１
等に過剰供給され、定着ローラ１に過剰に塗布されてし
まうことがある。これを防止するために、上述した清掃
時の場合と同様に清掃部材１５のみで定着ローラ１の表
面を清掃し、その後、高印字率定着時の場合と同様にオ
フセット防止液塗布部材１１および清掃部材１５を定着
ローラ１に当接してオフセット防止液９を定着ローラ１
の表面に均一に塗布する。そして、再び清掃部材１５の
みで定着ローラ１の表面を清掃し、定着動作が開始され
るまで待機する。Next, when fixing or cleaning is completed and the heat fixing device is turned off, the offset preventing liquid container 8 is supported so that the cleaning member 15 side is heavier than the offset preventing liquid applying member 11 side. Due to the dead weight of the cleaning member 15 and the offset prevention liquid container 8, the offset prevention liquid application member 11 is separated from the fixing roller 1, and the offset prevention liquid container 8 is inclined to a position where the cleaning member 15 contacts the fixing roller 1. Stop. If the fixing operation is not instructed even when the power is turned on again, the offset prevention liquid container 8 and the like stand by in this state. When the power is turned on for the first time, the entire apparatus is tilted and the offset prevention liquid 9 is offset by the offset prevention liquid application member 11 during transportation of the apparatus.
May be excessively supplied to the fixing roller 1 and excessively applied to the fixing roller 1. In order to prevent this, the surface of the fixing roller 1 is cleaned only by the cleaning member 15 as in the case of the above-described cleaning, and then the offset prevention liquid application member 11 and the cleaning member are cleaned as in the case of the high printing rate fixing. The member 15 is brought into contact with the fixing roller 1 to apply the offset prevention liquid 9 to the fixing roller 1.
Apply evenly to the surface of. Then, the surface of the fixing roller 1 is cleaned again only with the cleaning member 15, and the process stands by until the fixing operation is started.
【００５０】ところで、オフセット防止液９はオフセッ
ト防止液塗布部材１１の均一に形成された孔から一定量
が安定して塗布されるので、オフセット防止液９の容量
に対応して定着可能な被定着媒体２１の枚数を決定する
ことができ、この容量を定着ローラ１の機械的寿命に合
わせることができる。したがって、オフセット防止液９
が無くなった時が定着ローラ１の交換時期となり、交換
時期となった場合は、定着ローラ１およびオフセット防
止液容器８等からなる上部筐体Ａを下部筐体Ｂから分離
して新しい定着ローラ１等からなる上部筐体Ａと交換す
る。このように、オフセット防止液９の補充時期と定着
ローラ１および清掃部材１５等の交換時期を同じにする
ことにより、交換および補充時期が容易にわかってメン
テナンス性が向上するとともに、その交換が簡単である
ので、取扱いが便利である。By the way, since the offset prevention liquid 9 is stably applied in a constant amount through the uniformly formed holes of the offset prevention liquid application member 11, the offset prevention liquid 9 can be fixed according to the volume of the offset prevention liquid 9. The number of media 21 can be determined, and this capacity can be adjusted to the mechanical life of the fixing roller 1. Therefore, the offset prevention liquid 9
When the fixing roller 1 is replaced, the upper casing A including the fixing roller 1 and the offset prevention liquid container 8 is separated from the lower casing B, and a new fixing roller 1 is replaced. It is replaced with an upper casing A composed of In this way, by making the replenishment time of the offset prevention liquid 9 and the exchange time of the fixing roller 1, the cleaning member 15 and the like the same, the exchange and replenishment time can be easily known, the maintainability is improved, and the exchange is easy. Therefore, it is convenient to handle.
【００５１】このように、定着動作準備時、清掃時、ジ
ャミング時および被定着媒体２１の印字率の高いまたは
低い場合等の定着時において、オフセット防止液塗布部
材１１および清掃部材１５を選択的に定着ローラ１に接
触または離間させるようにしたので、定着ローラ１、オ
フセット防止液塗布部材１１および清掃部材１５の表面
の摩擦劣化を最小限に抑えて機械的寿命を長く維持させ
るとともに、清掃能力を高めてオフセットの防止を向上
させることができる。As described above, the offset prevention liquid applying member 11 and the cleaning member 15 are selectively used at the time of fixing operation preparation, cleaning, jamming, and fixing such as when the printing rate of the fixed medium 21 is high or low. Since the fixing roller 1 is brought into contact with or separated from the fixing roller 1, frictional deterioration of the surfaces of the fixing roller 1, the offset prevention liquid applying member 11 and the cleaning member 15 is minimized to maintain a long mechanical life and improve the cleaning ability. It can be increased to improve the prevention of offset.
【００５２】実施例２．図９はこの発明の第２の実施例
の要部の拡大図、図１０は一部を省略した図９の側面図
である。この実施例は、第１の実施例の清掃部材位置制
御アクチュエータ１８であるロータリソレノイドＥに代
えて、電磁クラッチおよびカム等を用いて清掃部材１５
の定着ローラ１への押圧力を変化させるようにしたもの
である。Example 2. FIG. 9 is an enlarged view of a main part of the second embodiment of the present invention, and FIG. 10 is a side view of FIG. 9 with a part omitted. In this embodiment, instead of the rotary solenoid E which is the cleaning member position control actuator 18 of the first embodiment, an electromagnetic clutch and a cam are used to clean the cleaning member 15.
The pressing force on the fixing roller 1 is changed.
【００５３】図において、２５はプリントコントローラ
１９に電気的に接続された電磁クラッチで、その回転軸
２５ａの端部にギア１３の回転を受ける第１のギア２６
が設けられている。２７は第１のギア２６が設けられた
側とは反対側で第１のギア２６と同心軸上に設置された
第２のギアで、電磁クラッチ２５が稼働すると第１のギ
ア２６および第２のギア２７の回転軸２５ａ，２７ａが
連結されて第１のギア２６と第２のギア２７は一体回転
し、電磁クラッチ２５が停止中は回転軸２５ａ，２７ａ
の連結が解除されて第２のギア２７は回転自由となるよ
うに構成されている。In the figure, reference numeral 25 is an electromagnetic clutch electrically connected to the print controller 19, and a first gear 26 for receiving rotation of the gear 13 at the end of the rotary shaft 25a thereof.
Is provided. A second gear 27 is provided on the side opposite to the side on which the first gear 26 is provided and coaxial with the first gear 26. When the electromagnetic clutch 25 operates, the first gear 26 and the second gear 26 are provided. The rotating shafts 25a, 27a of the gear 27 are connected to each other so that the first gear 26 and the second gear 27 rotate integrally, and the rotating shafts 25a, 27a while the electromagnetic clutch 25 is stopped.
The second gear 27 is configured to be freely rotatable by disconnecting the connection.
【００５４】２８は清掃部材１５の支持体１６の上部端
部を矢印Ｌの方向に付勢するように設けられたばねで、
このばね２８からの支持体１６への荷重は支持体回転軸
１６ａを中心とした回転力に変換され、清掃部材１５を
定着ローラ１に押し付ける力となっている。２９は第２
のギア２７の回転を受ける第３のギア、３０は支持体１
６の側面のほぼ中央部に設けられた突出部１６ｂに係止
するカムで、支持体１６からの荷重を受けている。ま
た、第３のギア２９はカム３０に偏心して設けられてお
り、図１１に示すように、第３のギア２９の回転によっ
て支持体１６の突出部１６ｂに対するカム３０の噛合う
位置を変えることにより、支持体１６は支持体回転軸１
６ａを中心に矢印Ｍの方向に回転するとともに、ばね２
８から支持体１６を介して伝達される荷重はカム３０と
清掃部材１５とに分配されて、定着ローラ１に対する清
掃部材１５の押圧力が変化するようになっている。Numeral 28 is a spring provided so as to urge the upper end of the support 16 of the cleaning member 15 in the direction of arrow L,
The load from the spring 28 on the support body 16 is converted into a rotational force about the support body rotation shaft 16a, and serves as a force for pressing the cleaning member 15 against the fixing roller 1. 29 is the second
The third gear 30, which receives the rotation of the gear 27 of FIG.
A cam that engages with a protruding portion 16b provided at a substantially central portion of the side surface of 6 receives a load from the support body 16. Further, the third gear 29 is eccentrically provided on the cam 30, and as shown in FIG. 11, the engagement position of the cam 30 with respect to the protruding portion 16b of the support 16 is changed by the rotation of the third gear 29. Therefore, the support body 16 becomes the support body rotation shaft 1
6a as a center of rotation in the direction of the arrow M and the spring 2
The load transmitted from 8 through the support member 16 is distributed to the cam 30 and the cleaning member 15 so that the pressing force of the cleaning member 15 against the fixing roller 1 changes.
【００５５】このように構成したこの実施例において
は、定着動作を開始すると、駆動ギア４からの回転が定
着ローラギア５および中間ギア１４を介してギア１３に
伝達され、さらに第１のギア２６に伝達される。この
時、プリントコントローラ１９は検出した印字率に基づ
いて電磁クラッチ２５に信号を送り、一定時間電磁クラ
ッチ２５を作動させて第１のギア２６と第２のギア２７
を一体回転させ、印字率に対応した清掃部材１５の押圧
力が定着ローラ１にかかるようにカム３０を回転させ
る。そして、定着ローラ１に当接した清掃部材１５によ
って定着ローラ１の表面に転移したトナー２０を清掃す
るとともに、オフセット防止液塗布部材１１等によって
オフセット防止液９の塗布も行い、オフセットを防止す
る。In this embodiment thus constructed, when the fixing operation is started, the rotation from the drive gear 4 is transmitted to the gear 13 via the fixing roller gear 5 and the intermediate gear 14, and further to the first gear 26. Transmitted. At this time, the print controller 19 sends a signal to the electromagnetic clutch 25 based on the detected print ratio, and operates the electromagnetic clutch 25 for a certain period of time to operate the first gear 26 and the second gear 27.
Is rotated integrally, and the cam 30 is rotated so that the pressing force of the cleaning member 15 corresponding to the printing rate is applied to the fixing roller 1. Then, the cleaning member 15 contacting the fixing roller 1 cleans the toner 20 transferred to the surface of the fixing roller 1, and the offset prevention liquid 9 is applied by the offset prevention liquid applying member 11 or the like to prevent the offset.
【００５６】定着が終了すると、電磁クラッチ２５の作
動を停止して回転軸２５ａ，２７ａの連結を解除し、定
着ローラ１から清掃部材１５を離間させて次の定着まで
待機する。また、印字率が低い場合は、プリントコント
ローラ１９から電磁クラッチ２５に信号を送らずに定着
ローラ１から清掃部材１５を離間させた状態のままと
し、オフセット防止液塗布部材１１等によってオフセッ
トを防止する。When the fixing is completed, the operation of the electromagnetic clutch 25 is stopped to disconnect the rotating shafts 25a and 27a, and the cleaning member 15 is separated from the fixing roller 1 to wait for the next fixing. When the print ratio is low, the cleaning controller 15 is kept separated from the fixing roller 1 without sending a signal from the print controller 19 to the electromagnetic clutch 25, and the offset prevention liquid application member 11 prevents the offset. .
【００５７】このように、この実施例によれば、印字率
に基づいて支持体１６の突出部１６ｂとカム３０との噛
合う位置を変えることにより、清掃部材１５の定着ロー
ラ１への押圧力を変化させることができ、清掃効率を一
層高めることができる。As described above, according to this embodiment, the pressing force of the cleaning member 15 to the fixing roller 1 is changed by changing the position where the protrusion 16b of the support 16 and the cam 30 mesh with each other based on the printing rate. Can be changed, and the cleaning efficiency can be further improved.
【００５８】実施例３．図１２はこの発明の第３の実施
例の要部の拡大図である。この実施例は、一端が熱定着
装置の側壁等に取り付けられた形状記憶合金からなる支
持板８０の他端に、オフセット防止液容器８の支持軸８
ａを回動可能に連結して支持したものである。Example 3. FIG. 12 is an enlarged view of the essential parts of the third embodiment of the present invention. In this embodiment, one end of the support plate 80 made of a shape memory alloy is attached to the side wall of the heat fixing device and the other end of the support shaft 8 of the offset prevention liquid container 8 is provided.
a is rotatably connected and supported.
【００５９】このように構成したこの実施例において
は、例えば定着ローラ１の温度制御異常によって過剰に
温度が上昇し、所定の温度を超えると、図１３に示すよ
うに、支持板８０が変形してオフセット防止液容器８、
オフセット防止液供給部材１０、オフセット防止液塗布
部材１１および清掃部材１５等を定着ローラ１から離間
させ、オフセット防止液塗布部材１１および清掃部材１
５等の熱変形や燃焼を防止する。これにより、熱定着装
置の安全性を容易に保つことができる。In this embodiment thus constructed, the temperature rises excessively due to an abnormal temperature control of the fixing roller 1, and when the temperature exceeds a predetermined temperature, the support plate 80 is deformed as shown in FIG. Offset prevention liquid container 8,
The offset prevention liquid supply member 10, the offset prevention liquid application member 11, the cleaning member 15 and the like are separated from the fixing roller 1 to provide the offset prevention liquid application member 11 and the cleaning member 1.
Prevents thermal deformation and burning of the 5th grade. This makes it possible to easily maintain the safety of the heat fixing device.
【００６０】なお、上述の実施例ではオフセット防止液
容器８を支持する支持板８０を形状記憶合金で構成した
場合を示したが、図１４に示すように、支持板８０ａを
例えばアルミニウムなどの金属材料で構成して、支持板
８０ａをばね８１と熱溶融する金属若しくは樹脂からな
る支持部材８２とによって荷重が釣り合うように設置し
てもよい。この場合も形状記憶合金で構成した場合と同
様に、定着ローラ１の温度制御異常によって過剰に温度
が上昇して所定温度を超えると、図１５に示すように、
支持部材８２が熔けてばね８１との荷重の釣り合いがと
れないようになり、オフセット防止液塗布部材１１およ
び清掃部材１５等を定着ローラ１から離間させて、オフ
セット防止液塗布部材１１および清掃部材１５等の熱変
形や燃焼を防止し、熱定着装置の安全性を保つことがで
きる。In the above embodiment, the support plate 80 for supporting the offset prevention liquid container 8 is made of a shape memory alloy. However, as shown in FIG. 14, the support plate 80a is made of metal such as aluminum. The support plate 80a may be made of a material, and the support plate 80a may be installed so that the load is balanced by the spring 81 and the support member 82 made of heat-melting metal or resin. Also in this case, as in the case of using the shape memory alloy, if the temperature rises excessively and exceeds the predetermined temperature due to the abnormal temperature control of the fixing roller 1, as shown in FIG.
The support member 82 melts so that the load on the spring 81 cannot be balanced, and the offset prevention liquid application member 11, the cleaning member 15 and the like are separated from the fixing roller 1, and the offset prevention liquid application member 11 and the cleaning member 15 are separated. It is possible to prevent thermal deformation and combustion of the heat fixing device and maintain the safety of the heat fixing device.
【００６１】実施例４．図１６はこの発明の第４の実施
例の要部の拡大図で、この実施例は、第１の実施例のオ
フセット防止液容器８にオフセット防止液供給部材１０
に対向し、清掃部材１５にオフセット防止液９が含浸す
るように清掃部材用オフセット防止液供給部材１０ａを
設けたものである。Example 4. FIG. 16 is an enlarged view of an essential part of the fourth embodiment of the present invention. In this embodiment, the offset prevention liquid container 8 is provided in the offset prevention liquid container 8 of the first embodiment.
The cleaning member 15 is provided with a cleaning member offset prevention liquid supply member 10a so that the cleaning member 15 is impregnated with the offset prevention liquid 9.
【００６２】このように構成したことにより、実施例１
とほぼ同じ作用および効果が得られ、清掃時等において
定着ローラ１に接触した清掃部材１５は、清掃部材用オ
フセット防止液供給部材１０ａからのオフセット防止液
９の粘着力を利用して定着ローラ１に付着したトナー２
０を清掃する。これにより、清掃効率を低下させること
なく定着ローラ１と清掃部材１５との摩擦を和らげるこ
とができ、定着ローラ１等の機械的寿命を長く維持する
ことができる。By virtue of such construction, the first embodiment
The cleaning member 15 that is brought into contact with the fixing roller 1 at the time of cleaning or the like can obtain substantially the same action and effect as the fixing roller 1 using the adhesive force of the offset prevention liquid 9 from the cleaning member offset prevention liquid supply member 10a. Toner stuck to 2
Clean 0. Thereby, the friction between the fixing roller 1 and the cleaning member 15 can be softened without lowering the cleaning efficiency, and the mechanical life of the fixing roller 1 and the like can be maintained for a long time.
【００６３】以上この発明の実施例について説明した
が、この発明はこれに限定するものではなく、例えば以
下の如く適宜変更することができる。 （１）容器傾斜制御アクチュエータ１２において、ロー
タリダンパＣを用いた場合を例示して説明したが、ロー
タリソレノイドを用いていもよい。Although the embodiment of the present invention has been described above, the present invention is not limited to this, and can be appropriately modified, for example, as follows. (1) In the container tilt control actuator 12, the case where the rotary damper C is used has been described as an example, but a rotary solenoid may be used.
【００６４】（２）清掃部材回転制御アクチュエータ１
７において、ワンウェイクラッチＤを用いた場合を示し
たが、例えばロータリダンパなどを用いてよく、清掃部
材１５の回転速度を定着ローラ１の回転速度と一致させ
ずに従動回転させて、清掃効率の低下を抑えながら摩擦
を和らげるようにしてもよい。(2) Cleaning member rotation control actuator 1
In FIG. 7, the case where the one-way clutch D is used is shown. However, for example, a rotary damper may be used, and the rotation speed of the cleaning member 15 does not match the rotation speed of the fixing roller 1 and is driven to rotate so that the cleaning efficiency can be improved. You may make it reduce friction, suppressing a fall.
【００６５】[0065]
【発明の効果】以上のようにこの発明に係る熱定着装置
は、ヒータを有する定着ローラと、定着ローラに圧接す
るように配設された圧接ローラと、定着ローラの近傍に
配設され離形剤が収容された離形剤容器と、離形剤容器
内の離形剤を定着ローラに塗布する塗布部材と、定着ロ
ーラの表面を清掃する清掃部材と、塗布部材および清掃
部材を定着ローラにそれぞれ接触または離間させる離接
手段とを備えたので、塗布部材および清掃部材を選択的
に定着ローラに接触または離間させることができ、清掃
能力を高めてオフセット防止を向上させることができ
る。As described above, in the thermal fixing device according to the present invention, the fixing roller having the heater, the pressure contact roller arranged so as to be in pressure contact with the fixing roller, and the releasing roller arranged near the fixing roller. A releasing agent container containing the agent, an applying member for applying the releasing agent in the releasing agent container to the fixing roller, a cleaning member for cleaning the surface of the fixing roller, and an applying member and a cleaning member for the fixing roller. Since the separating and contacting means for respectively contacting or separating is provided, the application member and the cleaning member can be selectively brought into contact with or separated from the fixing roller, and the cleaning ability can be improved and the offset prevention can be improved.
【００６６】また、離接手段を、定着ローラを回転させ
る駆動手段に連動させ、離接手段は、離形剤容器に設け
られこの離形剤容器を傾斜させる傾斜手段を含み、傾斜
手段を、ロータリダンパにより構成したので、簡単な構
造で塗布部材および清掃部材の定着ローラへの接触また
は離間を容易に行うことができる。さらに、離接手段に
より離形剤容器を傾斜させて塗布部材を離間させること
により、塗布部材への離形剤の供給を遮断するようにし
たので、必要時以外での離形剤の塗布や定着ローラへの
液垂れ等を防止することができ、塗布部材および離形剤
の消耗を抑えて経済的な熱定着装置を得ることができ
る。Further, the separating / contacting means is interlocked with the driving means for rotating the fixing roller, and the separating / contacting means includes an inclining means provided in the releasing agent container for inclining the releasing agent container. Since the rotary damper is used, the application member and the cleaning member can be easily brought into contact with or separated from the fixing roller with a simple structure. Further, since the release agent container is tilted by the contacting / separating means to separate the application member, the supply of the release agent to the application member is interrupted. It is possible to prevent the liquid from dripping onto the fixing roller, suppress the consumption of the coating member and the release agent, and obtain an economical thermal fixing device.
【００６７】この発明に係る熱定着装置は、清掃部材
に、排出検知手段によりジャミングを検知した時または
定着ローラの清掃時において定着ローラに接触した回転
方向規制手段を設けた、または、定着ローラに接触した
清掃部材に定着ローラの回転速度と異なる回転速度を与
える手段を設けたので、清掃部材の定着ローラへの摩擦
力を容易に変えることができ、清掃効率を高めることが
できる。In the thermal fixing device according to the present invention, the cleaning member is provided with the rotation direction regulating means that comes into contact with the fixing roller when the jamming is detected by the discharge detecting means or when the fixing roller is cleaned, or the fixing roller is provided. Since the means for providing the contacting cleaning member with a rotation speed different from the rotation speed of the fixing roller is provided, the frictional force of the cleaning member on the fixing roller can be easily changed, and the cleaning efficiency can be improved.
【００６８】この発明に係る熱定着装置は、被定着媒体
の定着動作開始準備の際または被定着媒体がジャミング
を起こした際に、塗布部材を定着ローラから離間させて
保持し、定着ローラを回転させて清掃部材を回転するこ
となく定着ローラの表面に接触させる手段と、清掃動作
開始前またはジャミング処理前、清掃後またはジャミン
グ処理後に清掃部材を数度回転させてこの清掃部材の同
じ面を連続して使用しないようにする手段とを備えたの
で、清掃部材からの定着ローラへのトナーの戻り等を防
ぎ清掃能力の低下を一層抑えることができる。In the thermal fixing device according to the present invention, when the fixing operation of the fixing medium is started or when the fixing medium jams, the application member is held apart from the fixing roller and the fixing roller is rotated. Means for bringing the cleaning member into contact with the surface of the fixing roller without rotating the cleaning member, and rotating the cleaning member several times before starting the cleaning operation or before the jamming process and after cleaning or the jamming process to continuously connect the same surface of the cleaning member. Therefore, it is possible to prevent the toner from returning from the cleaning member to the fixing roller and to further suppress the deterioration of the cleaning ability.
【００６９】この発明に係る熱定着装置は、被定着媒体
がジャミングを起こした際に、ジャミングを検知すると
同時に塗布部材を定着ローラから離間させて保持し、清
掃部材を定着ローラの表面に接触させて定着ローラを回
転させて清掃部材を定着ローラに従動回転させ、若しく
は定着ローラと異なる回転速度で回転させまたは定着ロ
ーラと反対方向に回転させる手段を備えたので、清掃部
材と定着ローラとの摩擦力により確実に定着ローラの清
掃を行うことができ、清掃能力を高めることができる。In the thermal fixing device according to the present invention, when jamming occurs in the medium to be fixed, the jamming is detected, and at the same time, the application member is held apart from the fixing roller, and the cleaning member is brought into contact with the surface of the fixing roller. Since the fixing roller is rotated by the fixing roller to rotate following the fixing roller, or the fixing roller is rotated at a different rotation speed from the fixing roller or in the opposite direction to the fixing roller, friction between the cleaning member and the fixing roller is provided. The fixing roller can be reliably cleaned by force, and the cleaning ability can be improved.
【００７０】この発明に係る熱定着装置は、被定着媒体
の印字率の検出および印字制御を行う印字制御手段を設
けるとともに、印字制御手段の信号に基づいて清掃部材
の支持体を駆動する駆動手段を設け、印字制御手段によ
り検出した印字率が高い被定着媒体の定着を行う時に、
印字制御手段からの信号により清掃部材の駆動手段を駆
動して清掃部材を定着ローラに従動回転させるととも
に、塗布部材を定着ローラに接触させ、印字制御手段に
より検出した印字率が低い被定着媒体の定着を行う時
に、清掃部材を定着ローラから離間させるとともに、塗
布部材を定着ローラに接触させる、または、印字制御手
段により検出した印字率に対応して、清掃部材の駆動手
段による清掃部材の定着ローラへの押圧力およびこの押
圧力の反作用による塗布部材の定着ローラへの押圧力を
変化させるので、塗布部材および清掃部材を装置の状態
に応じて選択的に定着ローラに接触または離間させるこ
とができ、清掃能力を一層向上させることができる。ま
た、定着ローラの摩擦劣化を抑えながら確実に定着ロー
ラの清掃を行うことができ、定着ローラ、塗布部材およ
び清掃部材等の機械的寿命を長く維持することができ
る。The thermal fixing device according to the present invention is provided with the print control means for detecting the print rate of the medium to be fixed and the print control, and the drive means for driving the support of the cleaning member based on the signal of the print control means. When fixing a medium to be fixed having a high printing rate detected by the print control means,
A cleaning member driving unit is driven by a signal from the print control unit to rotate the cleaning member driven by the fixing roller, and the application member is brought into contact with the fixing roller to detect a medium to be fixed having a low printing rate detected by the print control unit. At the time of fixing, the cleaning member is separated from the fixing roller and the applying member is brought into contact with the fixing roller, or the fixing member of the cleaning member is driven by the cleaning member driving unit in accordance with the printing rate detected by the print control unit. Since the pressing force to the fixing roller and the pressing force of the applying member to the fixing roller due to the reaction of this pressing force are changed, the applying member and the cleaning member can be selectively brought into contact with or separated from the fixing roller according to the state of the apparatus. The cleaning ability can be further improved. Further, the fixing roller can be reliably cleaned while suppressing frictional deterioration of the fixing roller, and the mechanical life of the fixing roller, the coating member, the cleaning member, etc. can be maintained for a long time.
【００７１】この発明に係る熱定着装置は、定着ローラ
の温度検知手段を設け、この温度検知手段からの信号に
より定着ローラの温度が所定の温度を超えた時に塗布部
材および清掃部材を定着ローラから離間させる手段を備
えた、あるいは、離形剤容器を熱応動手段により支持
し、定着ローラの温度が所定の温度を超えた時は熱応動
手段の作動により塗布部材および清掃部材を定着ローラ
から離間させるようにしたので、塗布部材および清掃部
材の熱変形および燃焼等を防止することができ、安全性
および信頼性の高い熱定着装置を得ることができる。The thermal fixing device according to the present invention is provided with the temperature detecting means of the fixing roller, and when the temperature of the fixing roller exceeds a predetermined temperature by the signal from the temperature detecting means, the applying member and the cleaning member are removed from the fixing roller. When the temperature of the fixing roller exceeds a predetermined temperature, the releasing agent container is provided with a means for separating the release agent container, and when the temperature of the fixing roller exceeds a predetermined temperature, the applying member and the cleaning member are separated from the fixing roller by the operation of the heat responsive means. By doing so, it is possible to prevent thermal deformation and burning of the coating member and the cleaning member, and it is possible to obtain a heat fixing device with high safety and reliability.
【００７２】この発明に係る熱定着装置は、塗布部材に
離形剤供給部材を介して離形剤容器内の離形剤を供給す
る、あるいは、清掃部材に離形剤供給部材を介して離形
剤容器内の離形剤を供給するので、離形剤を塗布部材へ
円滑に供給して塗布部材から定着ローラへ無駄無く均一
に塗布することができるとともに、清掃能力を低下させ
ることなく定着ローラおよび清掃部材の摩擦劣化を抑
え、機械的寿命を長く維持させることができる。In the heat fixing device according to the present invention, the release agent in the release agent container is supplied to the coating member via the release agent supply member, or the cleaning member is released via the release agent supply member. Since the release agent in the shape agent container is supplied, the release agent can be smoothly supplied to the application member and applied uniformly from the application member to the fixing roller without waste, and fixing can be performed without lowering the cleaning ability. Friction deterioration of the roller and the cleaning member can be suppressed, and the mechanical life can be maintained for a long time.
【００７３】この発明に係る熱定着装置は、定着ロー
ラ、離形剤容器、塗布部材および清掃部材を１つの筐体
に取り付けたので、定着ローラの交換および離形剤の補
充などが容易になってメンテナンス性を向上させること
ができ、装置の取扱いが便利な熱定着装置を得ることが
できる。In the heat fixing device according to the present invention, since the fixing roller, the releasing agent container, the coating member and the cleaning member are attached to one housing, it is easy to replace the fixing roller and replenish the releasing agent. Therefore, the maintainability can be improved, and a heat fixing device can be obtained which is convenient to handle.
【図１】 この発明の第１の実施例の原理図である。FIG. 1 is a principle diagram of a first embodiment of the present invention.
【図２】 図１の要部の正面図、左右側面図および平面
図である。FIG. 2 is a front view, right and left side views and a plan view of a main part of FIG.
【図３】 この発明の第１の実施例に係るロータリダン
パの断面図である。FIG. 3 is a cross-sectional view of the rotary damper according to the first embodiment of the present invention.
【図４】 （ａ），（ｂ）はこの発明の第１の実施例に
係るワンウェイクラッチの拡大図および作用図である。4 (a) and 4 (b) are an enlarged view and an operation view of a one-way clutch according to the first embodiment of the present invention.
【図５】 この発明の第１の実施例に係るロータリソレ
ノイドの構成図である。FIG. 5 is a configuration diagram of a rotary solenoid according to a first embodiment of the present invention.
【図６】 低印字率定着時における要部の作用説明図で
ある。FIG. 6 is an explanatory view of the operation of the main part at the time of fixing the low printing rate.
【図７】 高印字率定着時および定着準備時における要
部の作用説明図である。FIG. 7 is an operation explanatory view of a main part at the time of fixing a high printing rate and at the time of fixing preparation.
【図８】 清掃時および定着待機時における要部の作用
説明図である。FIG. 8 is an explanatory diagram of the operation of the main part during cleaning and standby for fixing.
【図９】 この発明の第２の実施例の要部の拡大図であ
る。FIG. 9 is an enlarged view of a main part of the second embodiment of the present invention.
【図１０】 一部を省略した図９の側面図である。FIG. 10 is a side view of FIG. 9 with a part omitted.
【図１１】 図９の作用説明図である。FIG. 11 is an explanatory view of the operation of FIG.
【図１２】 この発明の第３の実施例の要部の拡大図で
ある。FIG. 12 is an enlarged view of the essential parts of the third embodiment of the present invention.
【図１３】 図１２の作用説明図である。FIG. 13 is an explanatory view of the operation of FIG.
【図１４】 図１２の変形例を示す要部の拡大図であ
る。FIG. 14 is an enlarged view of a main part showing a modified example of FIG.
【図１５】 図１４の作用説明図である。FIG. 15 is an explanatory view of the operation of FIG.
【図１６】 この発明の第４の実施例の要部の拡大図で
ある。FIG. 16 is an enlarged view of the essential parts of the fourth embodiment of the present invention.
【図１７】 従来の熱定着装置の構成図である。FIG. 17 is a configuration diagram of a conventional heat fixing device.
【図１８】 従来の他の熱定着装置の構成図である。FIG. 18 is a configuration diagram of another conventional heat fixing device.
１ 定着ローラ、３ ヒータ、４ 駆動ギア、５ 定着
ローラギア、６ 圧接ローラ、８ オフセット防止液容
器、９ オフセット防止液、１０，１０ａ オフセット
防止液供給部材、１１ オフセット防止液塗布部材、１
２ 容器傾斜制御アクチュエータ、１３ ギア、１４
中間ギア、１５ 清掃部材、１６ 支持体、１６ 支持
体回転軸、１７ 清掃部材回転制御アクチュエータ、１
８ 清掃部材位置制御アクチュエータ、１９ プリント
コントローラ、２１ 被定着媒体、２２ 温度センサ、
２４ 排出センサ、２５ 電磁クラッチ、２８ ばね、
３０ カム、８０，８０ａ 支持板、８１ ばね、８２
金属（樹脂）、Ａ 上部筐体、Ｂ 下部筐体、Ｃ ロ
ータリダンパ、Ｄ ワンウェイクラッチ、Ｅ ロータリ
ソレノイド。DESCRIPTION OF SYMBOLS 1 fixing roller, 3 heater, 4 driving gear, 5 fixing roller gear, 6 pressing roller, 8 offset preventing liquid container, 9 offset preventing liquid, 10 and 10a offset preventing liquid supplying member, 11 offset preventing liquid applying member, 1
2 container tilt control actuator, 13 gear, 14
Intermediate gear, 15 cleaning member, 16 support, 16 support rotating shaft, 17 cleaning member rotation control actuator, 1
8 cleaning member position control actuator, 19 print controller, 21 fixed medium, 22 temperature sensor,
24 discharge sensor, 25 electromagnetic clutch, 28 spring,
30 cam, 80, 80a support plate, 81 spring, 82
Metal (resin), A upper case, B lower case, C rotary damper, D one-way clutch, E rotary solenoid.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ０３Ｇ 15/20 １０７ １０９ 15/00 ５２６ ５５０ 21/16 21/10 21/14 Ｇ０３Ｇ 21/00 ３７２ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location G03G 15/20 107 107 109 15/00 526 550 21/16 21/10 21/14 G03G 21/00 372
Claims (33)
ーラに圧接するように配設された圧接ローラと、前記定
着ローラの近傍に配設され離形剤が収容された離形剤容
器と、該離形剤容器内の離形剤を定着ローラに塗布する
塗布部材と、前記定着ローラの表面を清掃する清掃部材
と、前記塗布部材および清掃部材を前記定着ローラにそ
れぞれ接触または離間させる離接手段とを備えたことを
特徴とする熱定着装置。1. A fixing roller having a heater, a pressure contact roller arranged so as to be in pressure contact with the fixing roller, and a release agent container arranged near the fixing roller and containing a release agent. An application member for applying the release agent in the release agent container to the fixing roller, a cleaning member for cleaning the surface of the fixing roller, and a contacting / separating member for contacting or separating the applying member and the cleaning member with the fixing roller, respectively. And a thermal fixing device.
る駆動手段に連動させたことを特徴とする請求項１記載
の熱定着装置。2. The thermal fixing device according to claim 1, wherein the separating / contacting means is interlocked with a driving means for rotating the fixing roller.
該離形剤容器を傾斜させる傾斜手段を含むことを特徴と
する請求項１または２記載の熱定着装置。3. The heat fixing device according to claim 1, wherein the separating / contacting means includes an inclining means provided in the release agent container and inclining the release agent container.
したことを特徴とする請求項３記載の熱定着装置。4. The heat fixing device according to claim 3, wherein the tilting means is constituted by a rotary damper.
せて前記塗布部材を離間させることにより、前記塗布部
材への離形剤の供給を遮断することを特徴とする請求項
１，２または３記載の熱定着装置。5. The supply of the release agent to the coating member is interrupted by inclining the release agent container by the contacting / separating means to separate the coating member. Alternatively, the heat fixing device according to the item 3.
ローラの定着動作時に前記塗布部材を前記定着ローラに
接触させることを特徴とする請求項１，２または３記載
の熱定着装置。6. The thermal fixing device according to claim 1, wherein the application member is brought into contact with the fixing roller during a fixing operation of the fixing roller by a fixing roller driving unit.
ローラの回転方向を定着動作時と反対方向に回転させる
ことにより前記塗布部材を前記定着ローラから離間させ
ることを特徴とする請求項１，２または３記載の熱定着
装置。7. The fixing member driving means rotates the rotation direction of the fixing roller in a direction opposite to that in the fixing operation to separate the coating member from the fixing roller. Alternatively, the heat fixing device according to the item 3.
ローラの回転方向を定着動作時と反対方向に回転させる
ことにより前記清掃部材を前記定着ローラに接触させる
ことを特徴とする請求項１，２または３記載の熱定着装
置。8. The cleaning member is brought into contact with the fixing roller by rotating the rotation direction of the fixing roller in a direction opposite to that during the fixing operation by a fixing roller driving means. Alternatively, the heat fixing device according to the item 3.
被定着媒体の排出検知手段を設けたことを特徴とする請
求項１，２，３，４，５，６，７または８記載の熱定着
装置。9. The thermal fixing according to claim 1, wherein discharge detecting means for the medium to be fixed is provided on the downstream side of the fixing roller and the pressure contact roller. apparatus.
特徴とする請求項１，２，３，４，５，６，７，８また
は９記載の熱定着装置。10. The heat fixing device according to claim 1, wherein the cleaning member is formed in a roller shape.
着媒体のジャミングを検知した時は前記定着ローラの駆
動手段により前記定着ローラを反対方向に回転させるこ
とを特徴とする請求項９記載の熱定着装置。11. The heat according to claim 9, wherein when the discharge detecting means detects jamming of the medium to be fixed during the fixing operation, the fixing roller driving means rotates the fixing roller in the opposite direction. Fixing device.
ジャミングを検知した時または前記定着ローラの清掃時
において前記定着ローラに接触した回転方向規制手段を
設けたことを特徴とする請求項９，１０または１１記載
の熱定着装置。12. The cleaning member is provided with a rotation direction restricting means which comes into contact with the fixing roller when the jamming is detected by the discharge detecting means or when the fixing roller is cleaned. Alternatively, the heat fixing device according to item 11.
ジャミングを検知した時または前記定着ローラの清掃時
において前記定着ローラに接触した清掃部材に該定着ロ
ーラの回転速度と異なる回転速度を与える手段を設けた
ことを特徴とする請求項９，１０または１１記載の熱定
着装置。13. A cleaning member provided with a rotation speed different from the rotation speed of the fixing roller when the jamming is detected by the discharge detecting means or when the fixing roller is in contact with the fixing roller when cleaning the fixing roller. The heat fixing device according to claim 9, 10 or 11, wherein the heat fixing device is provided.
ッチにより構成したことを特徴とする請求項１２記載の
熱定着装置。14. The heat fixing device according to claim 12, wherein the rotation direction restricting means comprises a one-way clutch.
と異なる回転速度を与える手段を、ロータリダンパによ
り構成したことを特徴とする請求項１３記載の熱定着装
置。15. The thermal fixing device according to claim 13, wherein the means for giving the cleaning member a rotational speed different from the rotational speed of the fixing roller is constituted by a rotary damper.
ローラに圧接するように配設された圧接ローラと、前記
定着ローラの近傍に配設され離形剤が収容された離形剤
容器と、該離形剤容器内の離形剤を定着ローラに塗布す
る塗布部材と、前記定着ローラの表面を清掃する清掃部
材とを備えてなり、 被定着媒体の定着動作開始準備の際に、前記塗布部材を
前記定着ローラから離間させて保持し、前記定着ローラ
を回転させて清掃動作中に前記清掃部材を回転すること
なく該定着ローラの表面に接触させる手段と、清掃動作
開始前または清掃後に前記清掃部材を数度回転させて該
清掃部材の同じ面を連続して使用しないようにする手段
とを備えたことを特徴とする熱定着装置。16. A fixing roller having a heater, a pressure contact roller arranged so as to be in pressure contact with the fixing roller, a release agent container arranged near the fixing roller and containing a release agent, And a cleaning member that cleans the surface of the fixing roller. The coating agent is applied when preparing to start the fixing operation of the medium to be fixed. A member for holding the member away from the fixing roller, rotating the fixing roller to contact the surface of the fixing roller without rotating the cleaning member during the cleaning operation, and before or after the cleaning operation starts. And a means for rotating the cleaning member by several degrees so as not to continuously use the same surface of the cleaning member.
ローラに圧接するように配設された圧接ローラと、前記
定着ローラの近傍に配設され離形剤が収容された離形剤
容器と、該離形剤容器内の離形剤を定着ローラに塗布す
る塗布部材と、前記定着ローラの表面を清掃する清掃部
材とを備えてなり、 被定着媒体がジャミングを起こした際に、ジャミングを
検知すると同時に前記塗布部材を前記定着ローラから離
間させて保持し、前記定着ローラを回転させてジャミン
グ中に前記清掃部材を回転することなく該定着ローラの
表面に接触させる手段と、ジャミング処理前またはジャ
ミング処理後に前記清掃部材を数度回転させて該清掃部
材の同じ面を連続して使用しないようにする手段とを備
えたことを特徴とする熱定着装置。17. A fixing roller having a heater, a pressing roller arranged so as to be in pressure contact with the fixing roller, a releasing agent container arranged in the vicinity of the fixing roller and containing a releasing agent, It comprises a coating member for coating the fixing roller with the releasing agent in the releasing agent container, and a cleaning member for cleaning the surface of the fixing roller, and detects jamming when the medium to be fixed causes jamming. At the same time, the applying member is held apart from the fixing roller, and the fixing roller is rotated to bring the cleaning member into contact with the surface of the fixing roller without rotating during jamming, and before or after the jamming process. And a means for rotating the cleaning member several times after the treatment so as not to continuously use the same surface of the cleaning member.
ローラに圧接するように配設された圧接ローラと、前記
定着ローラの近傍に配設され離形剤が収容された離形剤
容器と、該離形剤容器内の離形剤を定着ローラに塗布す
る塗布部材と、前記定着ローラの表面を清掃する清掃部
材とを備えてなり、 被定着媒体の定着動作開始準備の際に、前記塗布部材を
前記定着ローラから離間させて保持し、前記清掃部材を
前記定着ローラの表面に接触させて該定着ローラを回転
させて清掃部材を定着ローラに従動回転させ、若しくは
定着ローラと異なる回転速度で回転させまたは定着ロー
ラと反対方向に回転させる手段を備えたことを特徴とす
る熱定着装置。18. A fixing roller having a heater, a pressure contact roller arranged so as to be in pressure contact with the fixing roller, a release agent container arranged near the fixing roller and containing a release agent, And a cleaning member that cleans the surface of the fixing roller. The coating agent is applied when preparing to start the fixing operation of the medium to be fixed. A member is held apart from the fixing roller, the cleaning member is brought into contact with the surface of the fixing roller to rotate the fixing roller, and the cleaning member is driven to rotate by the fixing roller, or at a rotation speed different from that of the fixing roller. A thermal fixing device comprising means for rotating or rotating in a direction opposite to that of the fixing roller.
ローラに圧接するように配設された圧接ローラと、前記
定着ローラの近傍に配設され離形剤が収容された離形剤
容器と、該離形剤容器内の離形剤を定着ローラに塗布す
る塗布部材と、前記定着ローラの表面を清掃する清掃部
材とを備えてなり、 被定着媒体がジャミングを起こした際に、ジャミングを
検知すると同時に前記塗布部材を前記定着ローラから離
間させて保持し、前記清掃部材を前記定着ローラの表面
に接触させて該定着ローラを回転させて清掃部材を定着
ローラに従動回転させ、若しくは定着ローラと異なる回
転速度で回転させまたは定着ローラと反対方向に回転さ
せる手段を備えたことを特徴とする熱定着装置。19. A fixing roller having a heater, a pressure contact roller arranged so as to be in pressure contact with the fixing roller, a release agent container arranged near the fixing roller and containing a release agent, It comprises a coating member for coating the fixing roller with the releasing agent in the releasing agent container, and a cleaning member for cleaning the surface of the fixing roller, and detects jamming when the medium to be fixed causes jamming. At the same time, the application member is held apart from the fixing roller, the cleaning member is brought into contact with the surface of the fixing roller to rotate the fixing roller, and the cleaning member is driven to rotate by the fixing roller. A thermal fixing device comprising means for rotating at a different rotation speed or rotating in a direction opposite to that of the fixing roller.
ローラに圧接するように配設された圧接ローラと、前記
定着ローラの近傍に配設され離形剤が収容された離形剤
容器と、該離形剤容器内の離形剤を定着ローラに塗布す
る塗布部材と、前記定着ローラの表面を清掃する清掃部
材とを備えてなり、 被定着媒体の定着動作開始準備の際に、前記塗布部材を
前記定着ローラから離間させて前記清掃部材を該定着ロ
ーラに接触させ、定着ローラを回転させて付着物の清掃
を行った後、前記塗布部材および清掃部材を同時に定着
ローラに接触させて離形剤を塗布するとともに、過剰に
付着した離形剤を該清掃部材により除去して該離形剤を
均一に塗布することを特徴とする熱定着装置。20. A fixing roller having a heater, a pressure roller arranged so as to be in pressure contact with the fixing roller, a releasing agent container disposed in the vicinity of the fixing roller and containing a releasing agent, And a cleaning member that cleans the surface of the fixing roller. The coating agent is applied when preparing to start the fixing operation of the medium to be fixed. After the member is separated from the fixing roller, the cleaning member is brought into contact with the fixing roller, the fixing roller is rotated to clean the adhered matter, and then the applying member and the cleaning member are brought into contact with the fixing roller at the same time and separated. A thermal fixing device characterized by applying a release agent, removing excessively attached release agent by the cleaning member, and applying the release agent uniformly.
制御を行う印字制御手段を設けたことを特徴とする請求
項１，２，３，４，５，６，７，８，９，１０，１１，
１２，１３，１４，１５，１６，１７，１８，１９また
は２０記載の熱定着装置。21. A printing control means for detecting the printing rate of the medium to be fixed and controlling the printing is provided, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. , 11,
The heat fixing device according to 12, 13, 14, 15, 16, 17, 18, 19 or 20.
掃部材の支持体を駆動する駆動手段を設けたことを特徴
とする請求項２１記載の熱定着装置。22. The heat fixing device according to claim 21, further comprising drive means for driving the support of the cleaning member based on a signal from the print control means.
高い被定着媒体の定着を行う時に、前記印字制御手段か
らの信号により前記清掃部材の駆動手段を駆動して前記
清掃部材を定着ローラに従動回転させるとともに、前記
塗布部材を定着ローラに接触させることを特徴とする請
求項２１または２２記載の熱定着装置。23. When fixing a medium to be fixed having a high printing rate detected by the print control means, the drive means of the cleaning member is driven by a signal from the print control means to drive the cleaning member to follow the fixing roller. 23. The thermal fixing device according to claim 21, wherein the applying member is brought into contact with a fixing roller while being rotated.
低い被定着媒体の定着を行う時に、前記清掃部材を定着
ローラから離間させるとともに、前記塗布部材を定着ロ
ーラに接触させることを特徴とする請求項２１または２
２記載の熱定着装置。24. When fixing a medium to be fixed having a low printing rate detected by the print control means, the cleaning member is separated from the fixing roller, and the applying member is brought into contact with the fixing roller. Item 21 or 2
2. The heat fixing device according to 2.
対応して、前記清掃部材の駆動手段による前記清掃部材
の定着ローラへの押圧力および該押圧力の反作用による
前記塗布部材の定着ローラへの押圧力を変化させること
を特徴とする請求項２１または２２記載の熱定着装置。25. Corresponding to the printing rate detected by the printing control means, a pressing force of the cleaning member driving means to the fixing roller of the cleaning member and a reaction of the pressing force to the application member to the fixing roller. 23. The heat fixing device according to claim 21, wherein the pressing force is changed.
ノイドにより構成したことを特徴とする請求項２２記載
の熱定着装置。26. The heat fixing device according to claim 22, wherein the driving means for the cleaning member is constituted by a rotary solenoid.
突出部を有し一端がばねにより付勢されて前記突出部と
ばねとの間において前記離形剤容器に回動可能に軸支さ
れた清掃部材の支持体と、クラッチを介して前記定着ロ
ーラの駆動手段に連結され、前記印字制御手段により制
御されて前記支持体の突出部に係止するカムとにより構
成したことを特徴とする請求項２２記載の熱定着装置。27. A drive means for the cleaning member is rotatably rotatably supported by the release agent container between the protrusion and the spring so that the cleaning means has a protrusion at an intermediate portion and one end is biased by a spring. And a cam that is connected to the fixing roller driving means through a clutch and is controlled by the print control means and locked to the protruding portion of the supporting body. 23. The heat fixing device according to claim 22.
温度検知手段からの信号により定着ローラの温度が所定
の温度を超えた時に前記塗布部材および清掃部材を定着
ローラから離間させる手段を備えたことを特徴とする請
求項１，２，３，４，５，６，７，８，９，１０，１
１，１２，１３，１４，１５，１６，１７，１８，１
９，２０，２１，２２，２３，２４，２５，２６または
２７記載の熱定着装置。28. A means for detecting the temperature of the fixing roller is provided, and means for separating the applying member and the cleaning member from the fixing roller when the temperature of the fixing roller exceeds a predetermined temperature by a signal from the temperature detecting means. Claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1
1, 12, 13, 14, 15, 16, 17, 18, 1
The thermal fixing device according to 9, 20, 21, 22, 23, 24, 25, 26 or 27.
し、前記定着ローラの温度が所定の温度を超えた時は前
記熱応動手段の作動により前記塗布部材および清掃部材
を定着ローラから離間させることを特徴とする請求項
１，２，３，４，５，６，７，８，９，１０，１１，１
２，１３，１４，１５，１６，１７，１８，１９，２
０，２１，２２，２３，２４，２５，２６，２７または
２８記載の熱定着装置。29. The release agent container is supported by a thermal responsive means, and when the temperature of the fixing roller exceeds a predetermined temperature, the thermal responsive means operates to separate the applying member and the cleaning member from the fixing roller. Claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 11, 1 characterized in that
2,13,14,15,16,17,18,19,2
The heat fixing device according to 0, 21, 22, 23, 24, 25, 26, 27 or 28.
は、熱溶融する金属若しくは樹脂とばねとによって構成
したことを特徴とする請求項２９記載の熱定着装置。30. The heat fixing device according to claim 29, wherein the heat responsive means is composed of a shape memory alloy, or a metal or resin that melts heat, and a spring.
記離形剤容器内の離形剤を供給することを特徴とする請
求項１，２，３，４，５，６，７，８，９，１０，１
１，１２，１３，１４，１５，１６，１７，１８，１
９，２０，２１，２２，２３，２４，２５，２６，２
７，２８，２９または３０記載の熱定着装置。31. The release agent in the release agent container is supplied to the coating member via a release agent supply member, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1
1, 12, 13, 14, 15, 16, 17, 18, 1
9, 20, 21, 22, 23, 24, 25, 26, 2
The heat fixing device according to 7, 28, 29 or 30.
記離形剤容器内の離形剤を供給することを特徴とする請
求項１，２，３，４，５，６，７，８，９，１０，１
１，１２，１３，１４，１５，１６，１７，１８，１
９，２０，２１，２２，２３，２４，２５，２６，２
７，２８，２９，３０または３１記載の熱定着装置。32. The release agent in the release agent container is supplied to the cleaning member via a release agent supply member, 1, 2, 3, 4, 5, 6, 7, 7. 8, 9, 10, 1
1, 12, 13, 14, 15, 16, 17, 18, 1
9, 20, 21, 22, 23, 24, 25, 26, 2
The heat fixing device according to 7, 28, 29, 30 or 31.
よび清掃部材を１つの筐体に取り付けたことを特徴とす
る請求項１，２，３，４，５，６，７，８，９，１０，
１１，１２，１３，１４，１５，１６，１７，１８，１
９，２０，２１，２２，２３，２４，２５，２６，２
７，２８，２９，３０，３１または３２記載の熱定着装
置。33. A fixing roller, a release agent container, a coating member and a cleaning member are attached to a single housing. 1, 2, 3, 4, 5, 6, 7, 8, 9 , 10,
11, 12, 13, 14, 15, 16, 17, 18, 1
9, 20, 21, 22, 23, 24, 25, 26, 2
The heat fixing device according to 7, 28, 29, 30, 31, or 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6161956A JPH0830134A (en) | 1994-07-14 | 1994-07-14 | Heat fixing-device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6161956A JPH0830134A (en) | 1994-07-14 | 1994-07-14 | Heat fixing-device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0830134A true JPH0830134A (en) | 1996-02-02 |
Family
ID=15745263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6161956A Pending JPH0830134A (en) | 1994-07-14 | 1994-07-14 | Heat fixing-device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0830134A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011081148A (en) * | 2009-10-06 | 2011-04-21 | Oki Data Corp | Damper device, separation/contact mechanism, fixing device, and image forming apparatus |
| JP2016027378A (en) * | 2014-07-02 | 2016-02-18 | 株式会社リコー | Fixing device and image forming apparatus |
| JP2016136231A (en) * | 2015-01-14 | 2016-07-28 | 株式会社リコー | Fixing device and image forming apparatus |
-
1994
- 1994-07-14 JP JP6161956A patent/JPH0830134A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011081148A (en) * | 2009-10-06 | 2011-04-21 | Oki Data Corp | Damper device, separation/contact mechanism, fixing device, and image forming apparatus |
| JP2016027378A (en) * | 2014-07-02 | 2016-02-18 | 株式会社リコー | Fixing device and image forming apparatus |
| JP2016136231A (en) * | 2015-01-14 | 2016-07-28 | 株式会社リコー | Fixing device and image forming apparatus |
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