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JPH03238471A - Paper feeding control system for recorder - Google Patents

Paper feeding control system for recorder

Info

Publication number
JPH03238471A
JPH03238471A JP2033928A JP3392890A JPH03238471A JP H03238471 A JPH03238471 A JP H03238471A JP 2033928 A JP2033928 A JP 2033928A JP 3392890 A JP3392890 A JP 3392890A JP H03238471 A JPH03238471 A JP H03238471A
Authority
JP
Japan
Prior art keywords
fixing roller
recording paper
deflection
recording
recording sheet
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
Application number
JP2033928A
Other languages
Japanese (ja)
Inventor
Hiroyuki Inoue
博之 井上
Nobuyuki Tanaka
信之 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP2033928A priority Critical patent/JPH03238471A/en
Publication of JPH03238471A publication Critical patent/JPH03238471A/en
Pending legal-status Critical Current

Links

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  • Registering Or Overturning Sheets (AREA)
  • Fixing For Electrophotography (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

PURPOSE:To prevent the shrinking and color slippage of a recorded image caused by the carrying failure of a recording sheet by providing a fixing roller control part adjusting the speed of revolution of a motor driving a fixing roller based on the measured deflection quantity of the recording sheet and controlling the deflection quantity of the recording sheet so as to be set within a prescribed range. CONSTITUTION:The deflection quantity of the recording sheet 3 passing between an image carrier 1 and the fixing roller 2 is measured by a deflection quantity measuring means 5 provided between the image carrier 1 and the fixing roller 2. Then, the speed of revolution of the motor 4 driving the fixing roller 2 is accelerated or reduced according to the deflection quantity of the recording sheet measured on the fixing roller control part 6, and controlling is carried out so that the deflection quantity of the recording sheet 3 is set within a prescribed range. Thus, the carrying failure of the recording sheet 3 is prevented, and high-definition color recording without having the shrinking and color slippage of the image is carried out.

Description

【発明の詳細な説明】 ([要) トナーを記録紙に転写させる像担持体と、記録紙に転写
されたトナーを記録紙に定着させる定着ローラと、定着
ローラを駆動させるモータとを有する記録装置に関して
、 たとえば定着ローラの膨潤等による定着ローラの紙送り
速度変化により生じる記録紙の搬送不良をなくし、当該
搬送不良による記録画像の縮みや色ずれを防止するため
、定着ローラと像多持体との間を通過する記録紙のたわ
み量を所定範囲内に保つ方法を提供することを目的とし
て、像担持体と定着ローラとの間を通過する記録紙のた
わみ量を計測するたわみ量計測手段と、計測された記録
紙のたわみ量に基づき定着ローラを駆動させるモータの
回転数を加減して記録紙のたわみ量が所定範囲内になる
よう制御する定着ローラ制御部とを有する構成である。
Detailed Description of the Invention ([Required] A recording device that includes an image carrier that transfers toner to a recording paper, a fixing roller that fixes the toner transferred to the recording paper to the recording paper, and a motor that drives the fixing roller. Regarding the device, in order to eliminate recording paper conveyance defects caused by changes in the paper feed speed of the fixing roller due to swelling of the fixing roller, etc., and to prevent shrinkage and color shift of recorded images due to such conveyance defects, the fixing roller and image carrier are A deflection amount measuring means for measuring the deflection amount of the recording paper passing between the image carrier and the fixing roller for the purpose of providing a method for keeping the deflection amount of the recording paper passing between the image carrier and the fixing roller within a predetermined range. and a fixing roller control section that controls the amount of deflection of the recording paper to be within a predetermined range by controlling the rotation speed of the motor that drives the fixing roller based on the measured amount of deflection of the recording paper.

(産業上の利用分野) 本発明は、電子写真記録装置、静電記録装置等のトナー
を記録紙に転写させる像担持体と、記録紙に転写された
トナーを記録紙に定着させる定着ローラと、定着ローラ
を駆動させるモータとを有する記録装置において、特に
複数の像担持体を用いて、記録紙上にカラー画像を記録
する記録装置の紙送り制御方式に関する。
(Industrial Application Field) The present invention relates to an image bearing member of an electrophotographic recording device, an electrostatic recording device, etc. that transfers toner to recording paper, and a fixing roller that fixes the toner transferred to the recording paper. The present invention relates to a paper feed control method for a recording apparatus having a motor for driving a fixing roller, and particularly for recording a color image on recording paper using a plurality of image carriers.

(従来の技術) 第6図に、従来のカラー電子写真記録装置の一例を示す
。当該装置の搬送系は、記録紙カセット601と、繰り
出しローラ602と、レジストローラ603と、グリッ
パ604と、グリッパを搬送するベルト605と、ベル
トの駆動プーリ606とて構成される。記録プロセス(
工〜■)はそれぞれ同一の部材で構成されており、感光
ドラム610と、帯電器611と、露光系612と、現
像器613と、転写器614と、クリーナ615とを右
する。これらは4組(工〜■)並べて設置され、順に各
カラーのトナー像を形威し、記録紙600に重ね転写す
ることによりカラー記録を行う。この後、記録紙600
は定着装置620へ送られ、定着ローラ621と、加圧
ローラ622から与えられる熱と圧力によってトナー像
は記録紙600上に定着される。
(Prior Art) FIG. 6 shows an example of a conventional color electrophotographic recording device. The conveyance system of the apparatus includes a recording paper cassette 601, a feed roller 602, a registration roller 603, a gripper 604, a belt 605 for conveying the gripper, and a driving pulley 606 for the belt. Recording process (
(4) to (3) are each composed of the same members, and include a photosensitive drum 610, a charger 611, an exposure system 612, a developing device 613, a transfer device 614, and a cleaner 615. Four sets of these are installed side by side, and color recording is performed by forming a toner image of each color in order and transferring it onto the recording paper 600 in an overlapping manner. After this, 600 sheets of recording paper
The toner image is sent to a fixing device 620, and the toner image is fixed on the recording paper 600 by heat and pressure applied from a fixing roller 621 and a pressure roller 622.

ところで、定着ローラ621の径は、トナーが付着する
のを防止するためローラ623を介して塗布されるシリ
コンオイルが定着ローラ621内部に浸透するために、
時間とともに膨潤し一定回転数で駆動した場合、定着装
置620ての紙送り速度が所定速度より速くなる現象が
発生する。
By the way, the diameter of the fixing roller 621 is set so that the silicone oil applied via the roller 623 to prevent toner from adhering penetrates into the fixing roller 621.
When the paper swells over time and is driven at a constant rotation speed, a phenomenon occurs in which the paper feeding speed in the fixing device 620 becomes faster than a predetermined speed.

一方、定着装置620はプリンタ全体の大きさを小さく
するために記録プロセス■の感光ドラム610の近くに
置かれ、記録紙600が定着装置620に入った時点で
は、なお記録プロセス■(記録紙の長さによっては記録
プロセスmもありうる)では転写が行われている。この
ため、定着ローラ621の送り速度が感光ドラム610
の送り速度よりも速いことにより、記録プロセス■。
On the other hand, in order to reduce the overall size of the printer, the fixing device 620 is placed near the photosensitive drum 610 of the recording process (2), and when the recording paper 600 enters the fixing device 620, it is still in the recording process (2) (of the recording paper). Depending on the length, there may be a recording process m) in which transfer is performed. Therefore, the feeding speed of the fixing roller 621 is lower than that of the photosensitive drum 611.
■ Recording process by faster than the feed rate.

■において画像の神びが起きるのに加え、記録プロセス
I、IIと■、■どの間で色ずれが生じ画質が低下して
いた。
In addition to image distortion occurring in (2), color shift occurred between recording processes I and II and (2) and (2), resulting in a decrease in image quality.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

ところで、従来前記の問題の対策として、定着ローラ6
21の膨潤を見込んでローラ径を小さめに製作するなど
により、定着ローラ621の紙送り速度を若干遅めとし
、定着装置620と記録プロセス■の感光ドラム610
との間で記録紙600をたわませる方法が採られていた
。このたわみによって両者の速度差を吸収しようとする
ものである。しかし、定着ローラ621の膨潤がない初
期状態において、定着ローラ621の送り速度と感光ド
ラム610の送り速度の差が大きく、記録プロセス■の
感光ドラム610と定着装置620との間で記録紙60
0の大きなたわみが発生する。この場合、腰の強い記録
紙600ては記録紙600が元に戻ろうとする力が感光
ドラム610の記録紙保持力を上回り、その結果、記録
紙600が感光ドラム610に対しスリップし、スリッ
プ後の紙送り速度は遅い定着ローラ621の速度となる
。このため、当該方法では画像の縮みや色ずれが生ずる
問題を免れることが困難であった。
By the way, conventionally, as a countermeasure to the above problem, the fixing roller 6
The paper feed speed of the fixing roller 621 is made slightly slower by making the roller diameter smaller in anticipation of the swelling of the fixing device 620 and the photosensitive drum 610 of the recording process (2).
A method has been adopted in which the recording paper 600 is bent between the two. This deflection attempts to absorb the speed difference between the two. However, in the initial state where the fixing roller 621 is not swollen, there is a large difference between the feeding speed of the fixing roller 621 and the feeding speed of the photosensitive drum 610, and the recording paper 620 is
A large deflection of 0 occurs. In this case, since the recording paper 600 is stiff, the force of the recording paper 600 to return to its original state exceeds the recording paper retention force of the photosensitive drum 610, and as a result, the recording paper 600 slips against the photosensitive drum 610, and after slipping, The paper feeding speed is the speed of the fixing roller 621, which is slow. Therefore, with this method, it is difficult to avoid problems such as image shrinkage and color shift.

本発明の目的は、前述した従来の問題に鑑み、定着ロー
ラと像担持体である感光ドラムとの間のたわみを一定い
保つことを可能にすることにある。
SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, an object of the present invention is to make it possible to maintain a constant deflection between a fixing roller and a photosensitive drum that is an image carrier.

(課題を解決するための手段) 以上の技術的課題を解決するため本発明は第1図に示す
ように、トナーを記録紙3に転写させる像担持体1と、
記録紙3に転写されたトナーを記録紙3に定着させる定
着ローラ2と、定着ローラを駆動させるモータ4とを右
する記録装置において、 像担持体1と定着ローラ2との間を通過する記録紙3の
たわみ量を計測するたわみ全計測手段5と、計測された
記録紙のたわみ量に基づき定着ローラ2を駆動させるモ
ータ4の回転数を加減して記録紙3のたわみ量が所定範
囲内になるよう制御する定着ローラ制御部6とを右する
(Means for Solving the Problems) In order to solve the above technical problems, the present invention, as shown in FIG. 1, includes an image carrier 1 that transfers toner onto a recording paper 3;
In a recording device that includes a fixing roller 2 that fixes the toner transferred to the recording paper 3 onto the recording paper 3 and a motor 4 that drives the fixing roller, the recording that passes between the image carrier 1 and the fixing roller 2 is used. The amount of deflection of the recording paper 3 is within a predetermined range by adjusting the rotation speed of the total deflection measuring means 5 that measures the amount of deflection of the paper 3 and the motor 4 that drives the fixing roller 2 based on the measured amount of deflection of the recording paper. The fixing roller control unit 6 controls the fixing roller so that

(作用〕 本発明に係る記録装置の紙送り制御方式は次のように動
作する。第1図に示すように、像担持体1と定着ローラ
2との間に設けたたわみ量計測手段5により、像担持体
1と定着ローラ2との間を通過する記録紙3のたわみ量
を計測する。次に定着ローラ制御部6において、当該計
測された記録紙のたわみ量に応じて定着ローラ2を駆動
するモータ4の回転数を加速あるいは減速させ、記録紙
3のたわみ量が所定範囲内になるよう制御するものであ
る。
(Operation) The paper feed control system of the recording apparatus according to the present invention operates as follows.As shown in FIG. , the amount of deflection of the recording paper 3 passing between the image carrier 1 and the fixing roller 2 is measured.Next, the fixing roller control section 6 controls the fixing roller 2 according to the measured amount of deflection of the recording paper. The rotational speed of the driving motor 4 is accelerated or decelerated to control the amount of deflection of the recording paper 3 within a predetermined range.

(実施例) 続いて、本発明の実施例について説明する。(Example) Next, examples of the present invention will be described.

第2図は実施例に係る構成国である。当該装置の搬送系
は、記録紙カセット201と、繰り出しローラ202と
、レジストローラ203と、グリッパ204と、グリッ
パを搬送するベルト205と、ベルトの駆動プーリ20
6で構成される。記録プロセス(I〜■)はそれぞれ同
一の部材で構成されており、像担持体である感光ドラム
210と、帯電器、現像器、転写器等を墳する。
Figure 2 shows the constituent countries according to the example. The conveyance system of the apparatus includes a recording paper cassette 201, a feed roller 202, a registration roller 203, a gripper 204, a belt 205 for conveying the gripper, and a drive pulley 20 for the belt.
Consists of 6. Each of the recording processes (I to ■) is composed of the same members, including a photosensitive drum 210 as an image carrier, a charger, a developer, a transfer device, and the like.

これらは4組(工〜■)並べて設置され、順に各種カラ
ーのトナー像を形威し、記録紙200に重ね転写するこ
とによりカラー記録を行う。定着装置220は、定着ロ
ーラ221と、加圧ローラ222とを有し、それらから
与えられる熱と圧力によってトナー像が記録紙200上
に定着される。その際、トナーが付着するのを防止する
ため、ローラ223を介して塗布されるシリコンオイル
が定着ローラ221内部に浸透し、時間とともに定着ロ
ーラ221が膨潤する。たわみ量は、超音波素子を用い
た距離センサ250により、記録紙200と距離センサ
250との間の距離を計測して求められる。定着ローラ
制御部260は、ADDCモ−タ280、信号処理部2
62と、ROM部264と、DAコンバータ263と、
DCモータドライバ265とを有し、DCモータ280
を介して定着ローラ221の回転数を制御する。信号処
理部262は、距離センサ250から出力される記録紙
のたわみ量の信号と、信号処理部262が保持する基準
のたわみ量とを比較し、比較結果に応じてROM部26
4のアドレスを指定する。ここで、距離センサ250か
らの信号は、記録紙のたわみにおけるふらつき等の誤差
を除くために、−回の計測についてnデータ(nは自然
数)を平均した値をたわみ量δとしている。ROM部2
64には、定着ローラ221の径が初期からオイル膨潤
後まで変化してもほぼ所定の送り速度が得られるように
、定着ローラ221の回転数を、最低回転数Nm1n 
、最大回転数N maxの間をMl(=Nmin)9M
2.・・・Ml6 (= Nmax )の16段階に設
定するためのデータが書き込まれており、信号処理部2
62から指示されたアドレスに基づき、当該16段階の
データ(8ビツト)が出力される。DAコンバータ26
3は、ROM部264から出力されたデータに基づき、
DCモータドライバ265に与える指令電圧を発生させ
る。DCモータドライバ265は、当該指令電圧に従っ
て定着ローラ221に接続されたDCモータ280を回
転駆動させる。
Four sets of these are installed side by side, and color recording is performed by sequentially forming toner images of various colors and overlappingly transferring them onto the recording paper 200. The fixing device 220 includes a fixing roller 221 and a pressure roller 222, and the toner image is fixed onto the recording paper 200 by heat and pressure applied thereto. At this time, in order to prevent toner from adhering, silicone oil applied via the roller 223 penetrates into the fixing roller 221, causing the fixing roller 221 to swell over time. The amount of deflection is determined by measuring the distance between the recording paper 200 and the distance sensor 250 using a distance sensor 250 using an ultrasonic element. The fixing roller control section 260 includes an ADDC motor 280 and a signal processing section 2.
62, ROM section 264, DA converter 263,
A DC motor driver 265 and a DC motor 280
The rotation speed of the fixing roller 221 is controlled via the fixing roller 221. The signal processing unit 262 compares the signal of the amount of deflection of the recording paper output from the distance sensor 250 with the reference amount of deflection held by the signal processing unit 262, and stores the signal in the ROM unit 26 according to the comparison result.
Specify address 4. Here, for the signal from the distance sensor 250, in order to eliminate errors such as fluctuations in the deflection of the recording paper, the deflection amount δ is the average value of n data (n is a natural number) for − measurements. ROM section 2
64, the number of rotations of the fixing roller 221 is set to a minimum number of rotations Nm1n so that a substantially predetermined feed speed can be obtained even if the diameter of the fixing roller 221 changes from the initial stage to after the oil has swelled.
, Ml (=Nmin) 9M between maximum rotation speed N max
2. ...Data for setting 16 stages of Ml6 (= Nmax) is written, and the signal processing unit 2
Based on the address specified by 62, the 16 stages of data (8 bits) are output. DA converter 26
3 is based on the data output from the ROM section 264,
A command voltage to be given to the DC motor driver 265 is generated. The DC motor driver 265 rotates the DC motor 280 connected to the fixing roller 221 according to the command voltage.

本実施例における定着ローラ221の回転制御フローチ
ャートを第3図に示す。例えば、現在の定着ローラ22
1の回転数がMLであったとする。たわみ量の計測値δ
が最低値δmin以下であれば、定着ローラ221の回
転数をMi−1に減速する。一方、δが最大値δmax
を超えていたならば、定着ローラ221の回転数をMi
llに加速する。それ以外の場合は、定着ローラ221
の送り速度の設定値は従前のままとする。
A flowchart for controlling the rotation of the fixing roller 221 in this embodiment is shown in FIG. For example, the current fixing roller 22
Assume that the rotation speed of 1 is ML. Measured value of deflection δ
is less than the minimum value δmin, the rotational speed of the fixing roller 221 is decelerated to Mi-1. On the other hand, δ is the maximum value δmax
If the rotation speed of the fixing roller 221 exceeds Mi
Accelerate to ll. In other cases, the fixing roller 221
The setting value of the feed speed will remain the same as before.

以下、第2図に基づき動作を説明する。The operation will be explained below based on FIG.

用紙カセット201から取り出された記録紙200は、
レジストローラ203により一旦停止されグリッパ20
4とのタイミングがとられた後、グリッパ204の送り
速度よりやや大きな速度でレジストローラ203から送
り出される。記録紙200先端がグリッパ204の中に
入り込むとグリッパ204は閉じ、記録紙200を把持
する。その後、レジストローラ203は定速回転に戻る
The recording paper 200 taken out from the paper cassette 201 is
The gripper 20 is temporarily stopped by the registration roller 203.
4, the paper is fed out from the registration rollers 203 at a speed slightly higher than the feeding speed of the gripper 204. When the leading edge of the recording paper 200 enters the gripper 204, the gripper 204 closes and grips the recording paper 200. Thereafter, the registration roller 203 returns to constant speed rotation.

記録紙200の先端が各記録プロセス(工〜■)から所
定の位置に到達すると、各感光ドラム210での画像露
光が順次開始され、公知の記録プロセスにより記録紙2
00上にカラーの重ね画像が記録される。記録プロセス
(IV)の終了後、記録紙200は定着装置220内に
送り込まれ画像の定着が行われる。
When the leading edge of the recording paper 200 reaches a predetermined position from each recording process (Steps to ■), image exposure on each photosensitive drum 210 is sequentially started, and the recording paper 200 is
A color superimposed image is recorded on 00. After the recording process (IV) is completed, the recording paper 200 is fed into the fixing device 220 and the image is fixed.

記録紙200の先端が定着装置220に入った後、定着
ローラ221と感光ドラム210との紙送り速度の差に
よって記録紙200にたわみが生じ始める。当該たわみ
が生じ始めるまでの時間Tlを経過した後から、記録紙
200の後端が感光ドラム210を通過するまでの間に
、第4図に示すようにTO時間毎に5回にわたり定着ロ
ーラ制御部260は記録紙200のたわみ量の計測を行
ない、定着ローラ221の回転数の制御を行う。
After the leading edge of the recording paper 200 enters the fixing device 220, the recording paper 200 begins to bend due to the difference in paper feeding speed between the fixing roller 221 and the photosensitive drum 210. After the time Tl until the deflection starts to occur until the rear end of the recording paper 200 passes the photosensitive drum 210, the fixing roller is controlled five times for each TO time as shown in FIG. The unit 260 measures the amount of deflection of the recording paper 200 and controls the number of rotations of the fixing roller 221.

今、Miの回転数で駆動される定着ローラ221の紙送
り速度が、定着ローラ221のオイル膨潤により、所定
速度V1よりやや速い状態であるとすると、記録紙20
0が定着装置220に入ってからT1時間経過した後も
、計測されるたわみ量は最低の基準値δmin以下のま
まである。
Now, suppose that the paper feeding speed of the fixing roller 221, which is driven at a rotational speed of Mi, is slightly faster than the predetermined speed V1 due to the oil swelling of the fixing roller 221.
Even after T1 time has passed since 0 entered the fixing device 220, the measured deflection amount remains below the minimum reference value δmin.

この時、定着ローラ制御部260により、定着ローラ2
21の回転数は一段階低速のMi−1に設定変更される
。これによって、定着ローラ221の紙送り速度も低速
になり、記録紙のたわみ量が増加する。2回目以降のた
わみ量計測においても、たわみ量が依然としてδmin
以下であれば、たわみ量がδminを超えるまで、定着
ローラ221の回転数は次々に低速側に設定変更される
。たわみ量がδminを超えδmaXの間にある場合は
回転数の設定値は変更されない。しかし、たわみ量がδ
max以上になった場合、回転数は一段階速く設定変更
される(第5図を参照)。
At this time, the fixing roller control unit 260 controls the fixing roller 2
The rotation speed of 21 is changed to Mi-1, which is one step lower. As a result, the paper feeding speed of the fixing roller 221 also becomes low, and the amount of deflection of the recording paper increases. Even in the second and subsequent deflection measurements, the deflection still remains at δmin.
If it is below, the rotation speed of the fixing roller 221 is successively changed to the lower speed side until the amount of deflection exceeds δmin. If the amount of deflection exceeds δmin and is between δmaX, the set value of the rotation speed is not changed. However, the amount of deflection is δ
When the rotation speed exceeds max, the rotation speed is changed to one step faster (see FIG. 5).

このような制御を行うことにより、定着ローラ221と
記録プロセス(rV)の感光ドラム210間を通過する
記録紙200のたわみ量を所定範囲内に保つことができ
、その結果記録紙の搬送が良好に行われ、記録プロセス
(IV)の転写位置を所定位置にすることができる。
By performing such control, the amount of deflection of the recording paper 200 passing between the fixing roller 221 and the photosensitive drum 210 of the recording process (rV) can be kept within a predetermined range, and as a result, the recording paper can be conveyed well. The transfer position for the recording process (IV) can be set at a predetermined position.

なお、5回目の記録紙200のたわみ量計測で設定され
た定着ローラ221の回転数の設定値はそのまま雌持し
、次の記録紙200の定着時の定着ローラ221回転数
の初期値とすることにより、定着ローラの速度変更を最
小限にすることができる。
Note that the set value of the number of rotations of the fixing roller 221 set in the fifth measurement of the amount of deflection of the recording paper 200 is retained as is, and is used as the initial value of the number of rotations of the fixing roller 221 when fixing the next recording paper 200. By doing so, changes in the speed of the fixing roller can be minimized.

また、定着ローラ221回転数の現状値を不揮発性メモ
リに書込んでおくことにより、−旦電源を落とした後、
再度、記録を始めた時に定着ローラ221に最適な回転
数を設定できる。
In addition, by writing the current value of the rotation speed of the fixing roller 221 into the non-volatile memory, after the power is turned off,
When recording is started again, the optimum rotation speed can be set for the fixing roller 221.

本実施例では、記録紙のたわみ量計測に超音波素子を用
いた距離センサを用いたが、LED (発光ダイオード
)やLEDなとの投光素子と光位置検出素子による三角
測量を応用した測定方式のセンサを用いてもよいのはも
ちろんである。
In this example, a distance sensor using an ultrasonic element was used to measure the amount of deflection of the recording paper. Of course, a sensor of this type may also be used.

また、電子写真装置以外の転写型の記録装置にも適用可
能である。
Further, it is also applicable to transfer type recording devices other than electrophotographic devices.

(発明の効果) 以上説明したように、本発明ではたとえば定着ローラの
膨潤等により、像担持体と定着ローラとの間を通過する
記録紙のたわみ量が過大あるいは過小になるため生じる
記録紙3の搬送不良を防止するため、たわみ量計測手段
を設は当該計測結果に基づいて定着ローラの回転数を制
御し当該たわみ量が所定範囲内になるようにしている。
(Effects of the Invention) As explained above, in the present invention, the amount of deflection of the recording paper passing between the image carrier and the fixing roller becomes too large or too small due to, for example, swelling of the fixing roller. In order to prevent conveyance defects, a deflection amount measuring means is provided and the rotation speed of the fixing roller is controlled based on the measurement result so that the deflection amount falls within a predetermined range.

したがって、記録紙の搬送不良がなくなりその結果画像
の伸縮や色ずれのない高品位なカラー記録が行え有用で
ある。
Therefore, there is no problem in conveyance of the recording paper, and as a result, high-quality color recording without image expansion/contraction or color shift can be performed, which is useful.

【図面の簡単な説明】[Brief explanation of drawings]

!!81図は本発明の原理ブロック図、第2図は実施例
に係る構成図、第3図は定着ローラの回転制御フローチ
ャート、第4図は実施例に係る説明図(その1)、第5
図は実施例に係る説明図(その2)、第6図は従来例に
係る構成国である。 1、(210)・・・像担持体(感光ドラム)2.22
1・・・定着ローラ 3.200・・・記録紙 4、(280)・・・モータ(DCモータ)5、(25
0)・・・たわみ量計測手段(距離センサ) 6.260・・・定着ローラ制御部
! ! 81 is a principle block diagram of the present invention, FIG. 2 is a configuration diagram according to an embodiment, FIG. 3 is a rotation control flowchart of the fixing roller, FIG. 4 is an explanatory diagram (part 1) according to the embodiment, and FIG.
The figure is an explanatory diagram (part 2) according to the embodiment, and FIG. 6 is the constituent countries according to the conventional example. 1, (210)... Image carrier (photosensitive drum) 2.22
1...Fixing roller 3.200...Recording paper 4, (280)...Motor (DC motor) 5, (25
0)... Deflection amount measuring means (distance sensor) 6.260... Fixing roller control section

Claims (1)

【特許請求の範囲】 トナーを記録紙(3)に転写させる像担持体(1)と、
記録紙(3)に転写されたトナーを記録紙(3)に定着
させる定着ローラ(2)と、定着ローラを駆動させるモ
ータ(4)とを有する記録装置において、 像担持体(1)と定着ローラ(2)との間を通過する記
録紙(3)のたわみ量を計測するたわみ量計測手段(5
)と、 計測された記録紙のたわみ量に基づき定着ローラ(2)
を駆動させるモータ(4)の回転数を加減して記録紙(
3)のたわみ量が所定範囲内になるよう制御する定着ロ
ーラ制御部(6)とを有することを特徴とする記録装置
の紙送り制御方式。
[Claims] An image carrier (1) that transfers toner to recording paper (3);
In a recording apparatus that includes a fixing roller (2) that fixes the toner transferred to the recording paper (3) onto the recording paper (3) and a motor (4) that drives the fixing roller, the image carrier (1) and the fixing roller are provided. A deflection measuring means (5) for measuring the deflection of the recording paper (3) passing between the roller (2) and the recording paper (3).
) and the fixing roller (2) based on the measured amount of deflection of the recording paper.
The number of rotations of the motor (4) that drives the recording paper (
3) A fixing roller control section (6) that controls the amount of deflection to be within a predetermined range.
JP2033928A 1990-02-16 1990-02-16 Paper feeding control system for recorder Pending JPH03238471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2033928A JPH03238471A (en) 1990-02-16 1990-02-16 Paper feeding control system for recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2033928A JPH03238471A (en) 1990-02-16 1990-02-16 Paper feeding control system for recorder

Publications (1)

Publication Number Publication Date
JPH03238471A true JPH03238471A (en) 1991-10-24

Family

ID=12400181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2033928A Pending JPH03238471A (en) 1990-02-16 1990-02-16 Paper feeding control system for recorder

Country Status (1)

Country Link
JP (1) JPH03238471A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007072289A (en) * 2005-09-08 2007-03-22 Canon Inc Image forming apparatus and recording medium conveyance control method in image forming apparatus
JP2008241830A (en) * 2007-03-26 2008-10-09 Oki Data Corp Image forming apparatus
JP2009098473A (en) * 2007-10-18 2009-05-07 Seiko Epson Corp Fixing roller, fixing device using same, and image forming device
JP2009134085A (en) * 2007-11-30 2009-06-18 Kyocera Mita Corp Image forming apparatus
JP2012208511A (en) * 2012-06-15 2012-10-25 Kyocera Document Solutions Inc Image forming apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62161156A (en) * 1986-01-10 1987-07-17 Canon Inc Image forming device
JPH03192381A (en) * 1989-12-22 1991-08-22 Fuji Xerox Co Ltd Paper feeding device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62161156A (en) * 1986-01-10 1987-07-17 Canon Inc Image forming device
JPH03192381A (en) * 1989-12-22 1991-08-22 Fuji Xerox Co Ltd Paper feeding device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007072289A (en) * 2005-09-08 2007-03-22 Canon Inc Image forming apparatus and recording medium conveyance control method in image forming apparatus
JP2008241830A (en) * 2007-03-26 2008-10-09 Oki Data Corp Image forming apparatus
JP2009098473A (en) * 2007-10-18 2009-05-07 Seiko Epson Corp Fixing roller, fixing device using same, and image forming device
JP2009134085A (en) * 2007-11-30 2009-06-18 Kyocera Mita Corp Image forming apparatus
JP2012208511A (en) * 2012-06-15 2012-10-25 Kyocera Document Solutions Inc Image forming apparatus

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