JPH08286480A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPH08286480A JPH08286480A JP7092813A JP9281395A JPH08286480A JP H08286480 A JPH08286480 A JP H08286480A JP 7092813 A JP7092813 A JP 7092813A JP 9281395 A JP9281395 A JP 9281395A JP H08286480 A JPH08286480 A JP H08286480A
- Authority
- JP
- Japan
- Prior art keywords
- stirring
- developer
- conveying
- axial direction
- developing
- 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
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、複写機やレーザプリン
タ等の画像形成装置に装着される現像装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a developing device mounted on an image forming apparatus such as a copying machine or a laser printer.
【0002】[0002]
【従来の技術】一般に電子写真式画像形成装置は次のよ
うなプロセスで印字を行っている。即ち、帯電器によっ
て感光体の表面を均一に帯電し、光学系による光照射で
画像情報を静電潜像として当該表面に形成する。次いで
当該静電潜像が現像装置の対向位置を通過する際にトナ
ー付着によって当該潜像を可視像化し、タイミングを合
わせて搬送されてくる記録紙と重ね、転写器を用いて、
トナー像を記録紙に転写する。転写されたトナー像は定
着装置を通過することによって記録紙上に定着される。
一方、転写処理後の感光体はクリーニング装置によって
残留トナーを除去され、感光体上の残留電荷は除電装置
によって除電される。2. Description of the Related Art Generally, an electrophotographic image forming apparatus prints by the following process. That is, the surface of the photoconductor is uniformly charged by the charger, and image information is formed on the surface as an electrostatic latent image by light irradiation by the optical system. Then, when the electrostatic latent image passes through a position opposite to the developing device, the latent image is visualized by toner adhesion, and the latent image is superposed on the recording paper conveyed at a timing, using a transfer device.
Transfer the toner image to the recording paper. The transferred toner image is fixed on the recording paper by passing through the fixing device.
On the other hand, the residual toner on the photoconductor after the transfer processing is removed by the cleaning device, and the residual charge on the photoconductor is removed by the charge removing device.
【0003】このような一連のプロセスを行う画像形成
装置において、近年、小型化、低価格化が進んでおり、
当然ながら現像ユニットに対しても小型化、低コスト化
する必要性がある。そこで、現像ローラを小径化した
り、例えば特開平1−134483号公報等に開示され
るように、2本のスクリュー状部材を用いて現像剤を現
像ローラの長手方向に沿って双方向に循環させることで
撹拌搬送を簡素化すること等が実用化されている。In recent years, image forming apparatuses that perform such a series of processes have been downsized and reduced in price.
Needless to say, it is also necessary to reduce the size and cost of the developing unit. Therefore, the diameter of the developing roller is reduced, or, as disclosed in, for example, JP-A-1-134483, the developer is circulated bidirectionally along the longitudinal direction of the developing roller by using two screw-shaped members. Therefore, simplification of stirring and conveying has been put into practical use.
【0004】例えば2成分現像方式の場合、現像剤を十
分摩擦帯電させて現像ローラへ供給しないとトナー飛
散、地汚れ等、画像品質に悪影響を及ぼすことになるの
で、現像装置中に貯蔵された現像剤に対する帯電性が非
常に重要である。それにも拘らず、各部材の小型化によ
って、トナーを補給した後、必要十分な帯電量を得るだ
けのストレスを現像剤に与えることが非常にむずかしく
なっている。また現像ローラと撹拌搬送部材の小型化の
他に、これらが近接配置することとなるので、トナーを
補給してから、当該トナーが現像ローラに到達するまで
の距離及び時間も短くなり、撹拌作用に関しても不利な
状況になっている。For example, in the case of the two-component developing system, if the developer is not sufficiently triboelectrically charged and supplied to the developing roller, the image quality such as toner scattering and scumming will be adversely affected, so the toner is stored in the developing device. Chargeability to the developer is very important. Nevertheless, due to the miniaturization of each member, it is very difficult to apply a stress sufficient to obtain a necessary and sufficient charge amount to the developer after replenishing the toner. In addition to the downsizing of the developing roller and the agitating / conveying member, the developing roller and the agitating / conveying member are arranged close to each other, so that the distance and time from the replenishment of the toner to the arrival of the toner on the developing roller are shortened and the agitating action The situation is also disadvantageous.
【0005】[0005]
【発明が解決しようとする課題】そこで例えば特開平5
−127519号公報においては、撹拌搬送ローラに対
し、その周方向に現像剤を移動、撹拌するための補助撹
拌部材を複数個設けることが提案されている。このよう
な構成により撹拌性を上げ、当該補助撹拌部材で現像剤
にストレスを与えて帯電するようにしているが、撹拌の
ための部品が多くなり、機構的にも複雑になり、更には
補助部材を設けることで現像タンクに収容可能な現像剤
量が制限される。また本発明者らによるテストによれ
ば、撹拌能力についても、期待されるほどの効果が上が
らない。Therefore, for example, Japanese Patent Laid-Open No. Hei 5
In Japanese Patent No. 127519, it is proposed to provide a plurality of auxiliary stirring members for moving and stirring the developer in the circumferential direction of the stirring and conveying roller. With such a structure, the agitation property is improved, and the auxiliary agitation member applies stress to the developer to charge it, but the number of parts for agitation increases, and the mechanism becomes complicated. By providing the member, the amount of developer that can be stored in the developing tank is limited. Further, according to the test conducted by the present inventors, the effect of stirring is not improved as expected.
【0006】そこで本発明は、撹拌機構をあまり複雑に
することなく、補給されたトナーと現像剤とを現像ロー
ラに達するまでに十分に撹拌して必要な帯電量を確保で
きる現像装置を提供することを課題とする。Therefore, the present invention provides a developing device which can sufficiently agitate the replenished toner and developer by the time they reach the developing roller without increasing the complexity of the agitating mechanism to secure a necessary charge amount. This is an issue.
【0007】[0007]
【課題を解決するための手段】上記課題を解決するため
に、本発明にしたがい、像担持体表面に現像剤を付与す
る現像ローラと、当該現像ローラの軸線方向での一端側
から他端側へ現像剤を搬送しつつ撹拌するための羽根部
を有する撹拌搬送部材とを有する現像装置において、撹
拌搬送部材の軸線方向に沿って帯磁体を並行配設するよ
うに構成する。In order to solve the above problems, according to the present invention, a developing roller for applying a developer to the surface of an image bearing member, and one end side to the other end side in the axial direction of the developing roller. In a developing device having a stirring / transporting member having a blade portion for transporting and stirring the developer, a magnetized body is arranged in parallel along the axial direction of the stirring / transporting member.
【0008】附設された濃度検知手段の近傍領域以外で
上記帯磁体が配設されていれば、好適である。また帯磁
体の磁力が、撹拌搬送部材の軸線方向に沿って変化して
いれば、効果的である。It is preferable that the magnetized body is arranged in a region other than the region in the vicinity of the attached concentration detecting means. Further, it is effective if the magnetic force of the magnetized body changes along the axial direction of the stirring and conveying member.
【0009】上記帯磁体が、撹拌搬送部材の軸線方向に
沿って断続的に配置されていれば、好都合である。上記
撹拌搬送部材が2個ある場合には、帯磁体がこれら撹拌
搬送部材の間に配設されていても良い。It is advantageous if the magnetized body is intermittently arranged along the axial direction of the stirring and conveying member. When there are two stirring and conveying members, the magnetized body may be arranged between these stirring and conveying members.
【0010】[0010]
【実施例】本発明の詳細を、図に示された実施例に基づ
いて、説明する。図1に本発明に係る現像装置の主要部
を概略的に示す。この現像装置は、扁平に、即ち直方体
状に形成されたハウジング8内に、現像ローラ3を内蔵
した現像スリーブ2、撹拌搬送部材たる第1撹拌搬送ス
クリュー4及び第2撹拌搬送スクリュー5を備えてな
る。現像スリーブ2はハウジング8の前面開口(図1
(b)で見て左側)から画像形成装置の感光体ドラム1
に臨むように配置され、不図示の駆動手段により図1
(b)で見て反時計方向に回転駆動される。また現像ス
リーブ2には現像剤の穂高規制部材たる現像ブレード6
が先端当接している。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described based on the embodiments shown in the drawings. FIG. 1 schematically shows a main part of a developing device according to the present invention. This developing device is provided with a developing sleeve 2 having a developing roller 3 therein, a first stirring / conveying screw 4 and a second stirring / conveying screw 5 as a stirring / conveying member, in a housing 8 formed flat, that is, in a rectangular parallelepiped shape. Become. The developing sleeve 2 is opened at the front of the housing 8 (see FIG.
Photosensitive drum 1 of the image forming apparatus from the left side in FIG.
1 by a driving means (not shown).
It is rotated counterclockwise as viewed in (b). Further, the developing sleeve 6 has a developing blade 6 as a developer height regulating member for the developing sleeve 2.
Touches the tip.
【0011】第1撹拌搬送スクリュー4は感光体ドラム
1と反対側の、現像スリーブ2背後に、第2撹拌搬送ス
クリュー5はこの第1撹拌搬送スクリュー4の背後にそ
れぞれ配置されており、これら現像スリーブ2、第1,
第2撹拌搬送スクリュー4,5の回転軸線は互いに平行
となっている。第1,第2撹拌搬送スクリュー4,5も
現像スリーブ2と同じくそれぞれ不図示の駆動手段によ
り回転駆動されるようになっている。各撹拌搬送スクリ
ュー4,5は、図1(a)で認識されるように、螺旋羽
根を備えたものであるが、それぞれの螺旋羽根の向き
は、それぞれの駆動手段によって回転される方向に依存
し、結果的に双方のスクリューによる現像剤の搬送方向
が互い違いになるように設定される。例えば、各スクリ
ューが図1(b)で見てそれぞれ反時計方向に回転する
場合、第1撹拌搬送スクリュー4では現像剤を図1
(a)で見て左方向に搬送するように、第2撹拌搬送ス
クリュー5では現像剤を右方向に搬送するように設定さ
れている。The first stirring and conveying screw 4 is arranged on the opposite side of the photosensitive drum 1 behind the developing sleeve 2, and the second stirring and conveying screw 5 is arranged behind this first stirring and conveying screw 4, respectively. Sleeve 2, first,
The rotation axes of the second stirring and conveying screws 4 and 5 are parallel to each other. Similarly to the developing sleeve 2, the first and second stirring and conveying screws 4 and 5 are also rotationally driven by driving means (not shown). As can be seen in FIG. 1A, each stirring and conveying screw 4 and 5 has a spiral blade, but the direction of each spiral blade depends on the direction rotated by each drive means. Then, as a result, the conveying directions of the developer by both screws are set to be staggered. For example, when each screw rotates counterclockwise as viewed in FIG.
The second agitating / conveying screw 5 is set so as to convey the developer to the right as viewed in (a) so as to convey to the left.
【0012】第1撹拌搬送スクリュー4と第2撹拌搬送
スクリュー5は仕切板11で殆ど仕切られている。しか
し第1撹拌搬送スクリュー4の両端では、例えば数ミリ
だけ現像剤受け渡しのために仕切られない構成となって
いる。これにより現像剤は第1撹拌搬送スクリュー4の
長さにわたって第1,第2撹拌搬送スクリューの間で循
環することとなる。The first stirring and conveying screw 4 and the second stirring and conveying screw 5 are almost partitioned by a partition plate 11. However, at both ends of the first agitating and conveying screw 4, for example, only a few millimeters are provided for partitioning the developer for delivery. As a result, the developer is circulated between the first and second stirring and feeding screws 4 over the length of the first stirring and feeding screw 4.
【0013】トナー濃度の制御については、第2撹拌搬
送スクリュー5側のハウジング8に設けられたトナー濃
度検知センサ10で濃度検知し、トナー濃度が所定値よ
りも低いと判断した場合には、第2撹拌搬送スクリュー
5の端部近傍に設けられたトナー補給口9(図1
(a))から不図示のトナー補給装置よりトナーが補給
される。Regarding the control of the toner concentration, when the toner concentration detection sensor 10 provided in the housing 8 on the side of the second agitating and conveying screw 5 detects the concentration and it is judged that the toner concentration is lower than a predetermined value, 2 Toner supply port 9 provided in the vicinity of the end of the agitating and conveying screw 5 (see FIG.
From (a), toner is replenished by a toner replenishing device (not shown).
【0014】第2撹拌搬送スクリュー5の下方に位置す
るハウジング8の部分に帯磁体たる撹拌マグネット12
(図1(b))がスクリューの軸線方向に沿って設けら
れている。これによって第2撹拌搬送スクリュー5周り
にある現像剤は、当該マグネットの磁気作用を受けて吸
着され、撹拌搬送スクリュー5が回転することで吸着さ
れた現像剤を所定方向へ搬送することとなる。本実施例
では図1(a)での右方向である。これにより現像剤に
ストレスを与えることとなる。A stirring magnet 12 serving as a magnetized body is provided in a portion of the housing 8 located below the second stirring and conveying screw 5.
(FIG. 1B) is provided along the axial direction of the screw. As a result, the developer around the second agitating / conveying screw 5 is attracted by the magnetic action of the magnet, and the agitating and conveying screw 5 rotates to convey the adsorbed developer in a predetermined direction. In this embodiment, it is the right direction in FIG. As a result, the developer is stressed.
【0015】上記の例では撹拌マグネット12がスクリ
ューの軸線方向に沿って連続的に設けられているが、同
じ第2撹拌搬送スクリュー5に対してはトナー濃度検知
センサ10も配置され、濃度検知するようになってい
る。そのため、この検知センサ10が撹拌マグネット1
2の磁力の影響を受ける可能性がある。そこで、図2
(a)で理解されるように、トナー濃度検知センサ10
の近傍には撹拌マグネットが存在せず、その他のスクリ
ュー軸線方向に沿うハウジング8部分には撹拌マグネッ
ト12が取り付けられるようになっていてもよい。この
ように配置しても横断面で見ると図2(b)で明らかな
ように、図1(b)と同じである。In the above example, the stirring magnet 12 is continuously provided along the axial direction of the screw, but the toner concentration detection sensor 10 is also arranged for the same second stirring and conveying screw 5 to detect the concentration. It is like this. Therefore, the detection sensor 10 is the stirring magnet 1
It may be affected by the magnetic force of 2. Therefore, FIG.
As can be seen in (a), the toner concentration detection sensor 10
The stirring magnet may not be present in the vicinity of, and the stirring magnet 12 may be attached to the other portion of the housing 8 along the screw axis direction. Even if it is arranged in this way, it is the same as that of FIG. 1B as seen in FIG.
【0016】また上記第1の例では第2撹拌搬送スクリ
ュー5の軸線方向に沿って設けられた撹拌マグネット1
2は、均一な磁力分布を有しているが、図3に示される
ように、軸線方向に沿って磁力に強弱をもたせてもよ
い。このような強弱によって、磁力の強い部分では、現
像剤にストレスを与えることができ、磁力の弱い部分で
はトナーとキャリアとを良く混合させることができるよ
うになる。In the first example, the stirring magnet 1 is provided along the axial direction of the second stirring and conveying screw 5.
No. 2 has a uniform magnetic force distribution, but as shown in FIG. 3, the magnetic force may have strength along the axial direction. Due to such strength, it is possible to apply stress to the developer in a portion having a strong magnetic force, and it is possible to mix the toner and the carrier well in a portion having a weak magnetic force.
【0017】このような磁力の強弱をつける構成を更に
考慮すると、図4に示されるように、第2撹拌搬送スク
リュー5の軸線方向において、撹拌マグネット12を断
続的に配置してもよい。このような配置によって、撹拌
マグネット12が存在して磁力のある部分では摩擦帯電
を加速させ、撹拌マグネット12がなく磁力の影響のな
い部分ではトナーとキャリアとが良く混合することとな
る。Considering further such a structure for increasing the strength of the magnetic force, as shown in FIG. 4, the stirring magnets 12 may be intermittently arranged in the axial direction of the second stirring and conveying screw 5. With this arrangement, triboelectric charging is accelerated in a portion where the stirring magnet 12 exists and has a magnetic force, and the toner and the carrier are well mixed in a portion where the stirring magnet 12 is absent and the influence of the magnetic force is absent.
【0018】更に撹拌マグネット12は、上記の例では
いずれも、第2撹拌搬送スクリュー5に対してのみ磁気
作用を及ぼしているが、図5に示されるように、第1撹
拌搬送スクリュー4と第2撹拌搬送スクリュー5の間に
位置するハウジング8部分に設けることで、両スクリュ
ー4,5に作用するようにしてもよい。このような配置
により、第1撹拌搬送スクリュー4と第2撹拌搬送スク
リュー5の両方で現像剤に摩擦力を与えることが可能に
なる。Further, in each of the above examples, the stirring magnet 12 exerts a magnetic action only on the second stirring / conveying screw 5, but as shown in FIG. The screw may be provided on a portion of the housing 8 located between the two agitating / conveying screws 5 to act on both screws 4 and 5. With such an arrangement, it becomes possible to apply a frictional force to the developer by both the first stirring and conveying screw 4 and the second stirring and conveying screw 5.
【0019】[0019]
【発明の効果】請求項1に記載の発明によれば、像担持
体表面に現像剤を付与する現像ローラと、当該現像ロー
ラの軸線方向での一端側から他端側へ現像剤を搬送しつ
つ撹拌するための羽根部を有する撹拌搬送部材とを有す
る現像装置において、撹拌搬送部材の軸線方向に沿って
帯磁体が並行配設されているので、現像剤の撹拌搬送に
際して当該現像剤にストレスを与えることができ、トナ
ーを補給する場合でも十分にトナーを帯電させてから現
像ローラに供給されるので、地汚れ等の異常画像の発生
を防止することができる。According to the first aspect of the present invention, the developing roller for applying the developer to the surface of the image bearing member and the developer is conveyed from one end side to the other end side in the axial direction of the developing roller. In a developing device having a stirring and conveying member having a blade portion for stirring while stirring, since the magnetized body is arranged in parallel along the axial direction of the stirring and conveying member, stress is applied to the developer during stirring and conveying of the developer. Even when the toner is replenished, the toner is sufficiently charged and then supplied to the developing roller, so that the occurrence of an abnormal image such as background stain can be prevented.
【0020】請求項2に記載の発明によれば、附設され
た濃度検知手段の近傍領域以外で帯磁体が配設されてい
るので、帯磁体の影響が濃度検知手段に及ばず、誤検知
を防止出来、しかも摩擦帯電能力を確保するので、地汚
れ等の異常画像の発生防止という請求項1の効果も奏す
ることとなる。According to the second aspect of the present invention, since the magnetized body is arranged in a region other than the area near the attached concentration detecting means, the influence of the magnetized body does not affect the concentration detecting means, and a false detection is made. Since this can be prevented and the frictional charging ability is secured, the effect of claim 1 of preventing the generation of an abnormal image such as background stain can be obtained.
【0021】請求項3に記載の発明によれば、帯磁体の
磁力が撹拌搬送部材の軸線方向に沿って変化しており、
また請求項4に記載の発明によれば、帯磁体が撹拌搬送
部材の軸線方向に沿って断続的に配置されているので、
摩擦帯電能力の向上と分散性能力の向上の両方が達成さ
れる。According to the third aspect of the invention, the magnetic force of the magnetized body changes along the axial direction of the stirring and conveying member,
Further, according to the invention described in claim 4, since the magnetized body is arranged intermittently along the axial direction of the stirring and conveying member,
Both improved triboelectric charging ability and improved dispersibility ability are achieved.
【0022】請求項5に記載の発明によれば、撹拌搬送
部材が2個ある場合に、帯磁体がこれら撹拌搬送部材の
間に配設されているので、現像剤に対する摩擦帯電を長
い距離にわたって行うことが可能となる。According to the fifth aspect of the present invention, when there are two agitating / conveying members, the magnetized body is disposed between the agitating / conveying members, so that the triboelectrification of the developer is performed over a long distance. It becomes possible to do.
【図1】本発明に係る現像装置の概略図で、(a)が平
面図、(b)が断面図である。FIG. 1 is a schematic view of a developing device according to the present invention, in which (a) is a plan view and (b) is a sectional view.
【図2】図1と異なる実施例を説明する概略図で、
(a)が平面図、(b)が断面図である。FIG. 2 is a schematic diagram illustrating an embodiment different from FIG.
(A) is a plan view and (b) is a sectional view.
【図3】図1と異なる実施例を説明する概略図で、
(a)が平面図、(b)が断面図である。FIG. 3 is a schematic diagram illustrating an embodiment different from FIG.
(A) is a plan view and (b) is a sectional view.
【図4】更に異なる実施例を説明する概略図で、(a)
が平面図、(b)が断面図である。FIG. 4 is a schematic view for explaining still another embodiment, (a)
Is a plan view, and (b) is a sectional view.
【図5】更に異なる実施例を説明する概略図で、(a)
が平面図、(b)が断面図である。FIG. 5 is a schematic view for explaining a further different embodiment, (a)
Is a plan view, and (b) is a sectional view.
2 現像スリーブ 4 第1撹拌搬送スクリュー 5 第2撹拌搬送スクリュー 6 現像スリーブ 8 ハウジング 10 トナー濃度検知センサ 12 撹拌マグネット 2 developing sleeve 4 first stirring and conveying screw 5 second stirring and conveying screw 6 developing sleeve 8 housing 10 toner concentration detection sensor 12 stirring magnet
Claims (5)
ーラと、当該現像ローラの軸線方向での一端側から他端
側へ現像剤を搬送しつつ撹拌するための羽根部を有する
撹拌搬送部材とを有する現像装置において、撹拌搬送部
材の軸線方向に沿って帯磁体を並行配設したことを特徴
とする現像装置。1. An agitating / conveying roller having a developing roller for applying a developer to the surface of an image bearing member, and a blade portion for agitating the developing roller from one end side to the other end side in the axial direction of the developing roller. In a developing device having a member, a magnetic device is arranged in parallel along the axial direction of the stirring and conveying member.
で前記帯磁体が配設されたことを特徴とする請求項1に
記載の現像装置。2. The developing device according to claim 1, wherein the magnetized body is disposed in a region other than a region in the vicinity of the attached density detecting means.
線方向に沿って変化することを特徴とする請求項1に記
載の現像装置。3. The developing device according to claim 1, wherein the magnetic force of the magnetized body changes along the axial direction of the stirring and conveying member.
に沿って断続的に配置されたことを特徴とする請求項1
に記載の現像装置。4. The magnetized body is intermittently arranged along the axial direction of the stirring and conveying member.
The developing device according to 1.
体が、これら撹拌搬送部材の間に配設されたことを特徴
とする請求項1に記載の現像装置。5. The developing device according to claim 1, wherein there are two agitating / conveying members, and the magnetized body is disposed between the agitating / conveying members.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7092813A JPH08286480A (en) | 1995-04-18 | 1995-04-18 | Developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7092813A JPH08286480A (en) | 1995-04-18 | 1995-04-18 | Developing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08286480A true JPH08286480A (en) | 1996-11-01 |
Family
ID=14064864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7092813A Pending JPH08286480A (en) | 1995-04-18 | 1995-04-18 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08286480A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004163559A (en) * | 2002-11-12 | 2004-06-10 | Kyocera Mita Corp | Developing apparatus |
US10670991B2 (en) | 2018-01-23 | 2020-06-02 | Canon Kabushiki Kaisha | Developing device |
US10739701B2 (en) | 2018-01-23 | 2020-08-11 | Canon Kabushiki Kaisha | Developing device |
US10895826B2 (en) | 2018-07-31 | 2021-01-19 | Canon Kabushiki Kaisha | Conveyance screw and developing apparatus |
-
1995
- 1995-04-18 JP JP7092813A patent/JPH08286480A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004163559A (en) * | 2002-11-12 | 2004-06-10 | Kyocera Mita Corp | Developing apparatus |
US10670991B2 (en) | 2018-01-23 | 2020-06-02 | Canon Kabushiki Kaisha | Developing device |
US10739701B2 (en) | 2018-01-23 | 2020-08-11 | Canon Kabushiki Kaisha | Developing device |
US10895826B2 (en) | 2018-07-31 | 2021-01-19 | Canon Kabushiki Kaisha | Conveyance screw and developing apparatus |
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