JPS58214174A - Picture recording device - Google Patents
Picture recording deviceInfo
- Publication number
- JPS58214174A JPS58214174A JP57096927A JP9692782A JPS58214174A JP S58214174 A JPS58214174 A JP S58214174A JP 57096927 A JP57096927 A JP 57096927A JP 9692782 A JP9692782 A JP 9692782A JP S58214174 A JPS58214174 A JP S58214174A
- Authority
- JP
- Japan
- Prior art keywords
- time
- recording
- timer
- developing device
- developer
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は画像記録装置、特にトナーとキャリアより成る
二成分乾式現像剤を用いて乾式現像を行なう、複写機あ
るいはレーザー於゛−ムプリンタ等の画像記録装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image recording device, and particularly to an image recording device such as a copying machine or a laser beam printer that performs dry development using a two-component dry developer consisting of toner and carrier. be.
電子写真等の画像記録における乾式二成分現像は周知の
とおシキャリアとトナーからなり、キャリアとトナーを
摩擦帯電させることによりキャリア及びトナーを互いに
極性の異なる電荷に帯電させ電荷潜像を形成された感光
体にトナーを静電的に付着させ、所望の画像に顕像化し
て記録画像を得るものである。感光体に付着させる方法
としては、ロール状磁石を回転させながら現像剤を感光
体に接触させて行′なったり、内部に磁石を固定した非
磁性ロール表面にマグネツトブラ・ノを形成させて行な
うものがある。また、キャリアとトナーを摩擦させるに
は、上記磁性又は非磁性ロールの表面、所謂スリーブ表
面上で行なわせたり、さらにはスリーブに現像剤を供給
する部分に回転スクリューや回転羽根を設けてキャリア
とトナーからなる現像剤を撹拌する゛ことによって行な
われる。Dry two-component development in image recording such as electrophotography consists of a well-known carrier and toner, and by frictionally charging the carrier and toner, the carrier and toner are charged with charges of different polarity to form a charge latent image. Toner is electrostatically attached to a photoreceptor and visualized into a desired image to obtain a recorded image. The developer can be attached to the photoconductor by bringing the developer into contact with the photoconductor while rotating a rolled magnet, or by forming a magnetic roller on the surface of a non-magnetic roll with a magnet fixed inside. There is. In addition, friction between the carrier and the toner can be carried out on the surface of the magnetic or non-magnetic roll, the so-called sleeve surface, or furthermore, a rotating screw or rotating blade may be provided in the part that supplies the developer to the sleeve. This is done by stirring a developer consisting of toner.
このような従来の画像記録装置における現像装置が動作
しないまま長時間にわたり停止している場合には、以下
に述べるような問題が発生した。When the developing device in such a conventional image recording apparatus remains inactive for a long period of time, the following problems occur.
例えば電源は投入されているものの長時間休止されてい
た後記録を行なおうとすると、最初の数枚は濃度が高く
カブリの多い画像になってしまうことが多かった。これ
は長時間放置によって、トナーの電荷が消滅してしまう
為であシ、再使用時に充分な攪拌摩擦が行なわれないま
ま現像、してしまうからである。For example, when recording is attempted after the power has been turned on but has been stopped for a long time, the first few images often end up with high density and foggy images. This is because the charge on the toner disappears when it is left for a long time, and when it is reused, it is developed without sufficient stirring and friction.
放置後、再度現像を行なおうとするときのトナーの電荷
量の特性は、トナーキャリア現像装置の特性に依存する
のは勿論である。その為に材料の01究開発によってト
ナー及びキャリアを改良し、攪拌初期特性を向上させる
努力もなされている。Of course, the characteristics of the charge amount of the toner when it is attempted to perform development again after being left alone depend on the characteristics of the toner carrier developing device. For this reason, efforts are being made to improve the toner and carrier through research and development of materials and to improve the initial stirring characteristics.
また現像装置の攪拌能力の向上を目脂した工夫もみられ
る。しかし、一般的傾向として前述したよ−うな長時間
停止の際に生じる問題点は避けられな本発明は上記のよ
うな従来装置の欠点に鑑みてなされたもので、記録が行
なわれない状態で長時間放置されても次の画像記録開始
直後がらカブリの少ない鮮明な画像記録を行なうことの
できる画像記録装置を提供しようとするものである。In addition, some efforts have been made to improve the agitation ability of the developing device. However, as a general trend, the problems that occur when the device is stopped for a long time as described above are unavoidable. It is an object of the present invention to provide an image recording apparatus that can record clear images with less fog immediately after starting the next image recording even if left unused for a long time.
以上の目的を達成するために本発明では記録が行なわれ
ない、現像装置が非駆動状態にある時間を計測するタイ
マ一手段を設け、このタイマ一手段の計測した非駆動時
間に応じて現像装置を空駆動し、トナーとキャリアより
成る現像剤を攪拌する構成を採用した。In order to achieve the above object, the present invention provides a timer means for measuring the time when the developing device is in a non-driving state in which no recording is performed, and the developing device We adopted a configuration in which the developer is idle-driven to agitate the developer consisting of toner and carrier.
以下、図面に示す実施例に基づき本発明の詳細な説明す
る。Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
第1図は本発明の画像記録装置の現像装置の制御回路の
概要を示すブロック図で、図においては制御回路1はタ
イマー2および現像装置駆動回路3を有し、現像剤を撹
拌する現像装置のモータ4は現像装置駆動回路3を介し
て駆動される。FIG. 1 is a block diagram showing an outline of a control circuit of a developing device of an image recording apparatus of the present invention. In the figure, a control circuit 1 includes a timer 2 and a developing device drive circuit 3, and a developing device for stirring developer The motor 4 is driven via a developing device drive circuit 3.
ここで、制御回路1Vi、記録装置の図示されない、感
光トラムの駆動シーケンス、帯電シーケンス、定着装置
の温度制御賊等の記録部材の給搬送等の制御をつかさど
る部分である。制御回路1は複写A置の場合には本体操
作部からの信号によつ ′て各ユニットを所定のシーケ
ンスで動作させる中枢部であり、レーザービームプリン
タ等の場合には内部又は外部の制御部からの指令で各ユ
ニットを所定のシーケンスで動作させるように構成され
る。Here, the control circuit 1Vi is a part (not shown) of the recording apparatus that controls the drive sequence of the photosensitive tram, the charging sequence, the temperature control of the fixing device, etc., and the feeding and conveyance of the recording member. The control circuit 1 is the central part that operates each unit in a predetermined sequence based on the signals from the main body operation part in the case of a copying machine A, and the control circuit 1 is the central part that operates each unit in a predetermined sequence based on the signals from the main body operation part, and in the case of a laser beam printer, etc. It is configured to operate each unit in a predetermined sequence based on instructions from the controller.
また、記録動作が行なわれない場合には上記の制御回路
の一部としてのタイマー2が動作し、時間tをカウント
するように構成されているみ次に第2図のフローチャー
ト図を参照して本発明の画像記録装置における処理の第
1の実施例を詳細に説明する。Further, when the recording operation is not performed, the timer 2 as a part of the above-mentioned control circuit operates and is configured to count the time t. A first embodiment of processing in the image recording apparatus of the present invention will be described in detail.
まず、第2図のステップ1においては制御回路1のタイ
マー2がリセットされ、続いてステップ2において画像
記録を行なうか否かが判定される。First, in step 1 of FIG. 2, the timer 2 of the control circuit 1 is reset, and then in step 2, it is determined whether or not image recording is to be performed.
外部より記録命令が入力された場合にはここでステップ
9に移り、公知の手順にしたがって前述の各装置を制
御回路1が制御を行なうことにより画像記録動作が行な
われる。If a recording command is input from the outside, the process moves to step 9, where the control circuit 1 controls each of the above-mentioned devices according to a known procedure, thereby performing an image recording operation.
ステップ2において記録命令の入力がない場合にはステ
ップ3に移り、タイマー2がスタートする。タイマー2
の計測時間(現像装置の非駆動時間)tがt。を超える
と、ステップ4からステップ5に移行し、現像装置のモ
ータ4が現像装置駆動回路3を介して起動され現像剤の
撹拌が開始さ些る。(ステップ4で記録命令が入力され
た場合はステップ2を経てステップ9で通常の記録動作
を行なう。)この全駆動動作は時間1.たけ続けられ、
ステップ6でタイマー2の計測時間tがt。+t1より
大になった時、ステップ7において現像装置のモータ4
は停止される。続いてステップ8でタイマー2がリセッ
トされ、ステップ2に戻る。If no recording command is input in step 2, the process moves to step 3 and timer 2 is started. timer 2
The measured time (non-driving time of the developing device) t is t. When this value is exceeded, the process moves from step 4 to step 5, where the motor 4 of the developing device is activated via the developing device drive circuit 3 and agitation of the developer is started. (If a recording command is input in step 4, normal recording operation is performed in step 9 after passing through step 2.) This entire drive operation takes time 1. Continue to climb,
In step 6, the measurement time t of timer 2 is t. When it becomes larger than +t1, in step 7, the motor 4 of the developing device
will be stopped. Then, in step 8, timer 2 is reset, and the process returns to step 2.
ステップ2で記録命令が入力されなかった場合にはステ
ップ3〜8の動作を再び行なう。つまシ、記録動作が行
なわれない場合には一定の時間t。ごとに現像装置のモ
ータ4が一定時間t1駆動されることになる。ここで時
間t。及びt、は使用されるトナー、キャリア及び現像
器の撹拌能力によって決定される。すなわち、現像剤が
攪拌なしで放置されて実用上支障の無い時間がt。であ
り、toたけ放置されたトナーが定常量の摩擦電荷を得
るのに必要な時間がtlである。一般にt。を長くする
とそれだけトナーの電荷減衰量も大きいので攪拌時間1
.も長く必要になるがこの時間t。山の設定は当業者に
おいて適宜設定すればよい。If no recording command is input in step 2, the operations in steps 3 to 8 are performed again. However, if no recording operation is performed, a certain period of time t. The motor 4 of the developing device is driven for a predetermined time t1 every time. Here time t. and t are determined by the toner, carrier, and agitation capacity of the developer used. That is, t is the time when the developer is left without stirring without causing any practical problems. , and the time required for the toner left alone to obtain a steady amount of triboelectric charge is tl. Generally t. The longer the agitation time 1, the greater the toner charge attenuation.
.. It will take a long time, but this time t. A person skilled in the art may appropriately set the mountain.
以上の第1の実施例では現像装置が一定時間以上駆動さ
れなかった場合に空駆動を行ない現像剤の撹拌を行なっ
たが、以下第3図にフローチャート図として示す第2の
実施例においては空駆動による撹拌動作は画像の記録動
作の準備シーフェンスとしてタイマー2の開側時間に応
じて行々われる。In the first embodiment described above, when the developing device is not driven for a certain period of time or more, idle driving is performed to stir the developer, but in the second embodiment shown below as a flowchart in FIG. The stirring operation by driving is performed in accordance with the open time of the timer 2 as a preparatory fence for the image recording operation.
第3図のステップ1においてはまずタイマー2がリセッ
トされ、続くステップ2では記録命令の往古が判定され
、記録命令のない場合にはステップ3に移シ、タイマー
2がスタートされる。続いてステップ2に戻り、記録命
令があった場合は、記録動作(ステップ8)に先だちス
テップ4,5゜6またはステップ4,5.7よりなる準
備シーフェンスで処理が行なわれる。In step 1 of FIG. 3, the timer 2 is first reset, and in the subsequent step 2, it is determined whether there is a record command, and if there is no record command, the process moves to step 3 and the timer 2 is started. Subsequently, the process returns to step 2, and if there is a recording command, processing is performed in a preparation phase consisting of steps 4, 5.6 or steps 4, 5.7 prior to the recording operation (step 8).
すなわち、ステップ、4において先にスタートしたタイ
マー2の計測時間tが前述の現像剤が撹拌なしで放置さ
れても実用上問題のない時間t。以内であった場合には
空駆動なしにステップ4からステップ8へ移り、記録動
作が行なわれる。That is, the time t measured by the timer 2 that was started first in step 4 is a time t that causes no practical problem even if the developer is left without being stirred. If it is within the range, the process moves from step 4 to step 8 without idle driving, and a recording operation is performed.
また、ステップ5においてタイマー2の計測時間tがt
。<1<12であった場合(t2については後述する)
にはステップ6へ移り、計測時間1(1゜<1<12)
に対応した時間t3だけ現像装置駆動回路3を介してモ
ータ4が駆動され、現像剤の攪拌が行なわれた後、ステ
ップ8において記録動作が行なわれる。Also, in step 5, the measurement time t of the timer 2 is t
. If <1<12 (t2 will be explained later)
Then move on to step 6 and set measurement time 1 (1゜<1<12)
After the motor 4 is driven via the developing device drive circuit 3 for a time t3 corresponding to the time t3 to stir the developer, a recording operation is performed in step 8.
また、ステップ5においてタイマー2の胴側時間が1>
12であった場合には、ステップ7に移り計測時間1
(=1>12)に応じた時間t4だけモータ4が駆動さ
れ、現像剤の攪拌が行なわれた後、ステップ8で記録動
作が行なわれる。Also, in step 5, the timer 2's body side time is 1>
If it is 12, the process moves to step 7 and the measurement time is 1.
After the motor 4 is driven for a time t4 corresponding to (=1>12) and the developer is stirred, a recording operation is performed in step 8.
すなわち、第1の実施例においては記録動作時以外では
一定時間t。おきに 1v!7ず一定時間t1だけ現像
剤撹拌を行なっていたが、上述の第2の実施例において
は記録動作に先だって、一定のしきい値I2’を設け、
その時間を超えたか否かで現像装置の非駆動時間tを検
知し、非駆動時間tに応じた時間j3+tたはt4の間
だけ空駆動による現像剤撹拌を行なうものである。また
、この時間t2をさらに多く設けて、非駆動時間を細く
分け、それに応じた撹拌動作を行なうようにもてき、こ
のようにすればより無駄のない画像記録装置を提供でき
る。That is, in the first embodiment, the constant time t is used except during recording operations. Okini 1v! 7. The developer is stirred for a certain period of time t1, but in the second embodiment described above, a certain threshold value I2' is set before the recording operation.
The non-driving time t of the developing device is detected depending on whether or not this time has been exceeded, and the developer is stirred by idle driving only during a time j3+t or t4 corresponding to the non-driving time t. Moreover, this time t2 is provided to be larger, and the non-driving time is divided into smaller parts, and the stirring operation is performed accordingly.In this way, an image recording apparatus with less waste can be provided.
以上の説明から明らかなように、本発明は、記録の行な
われない、現像装置が非駆動状態にある時間をi−l測
するタイマ一手段を設け、このタイマ一手段の計測時間
に応じて現像剤を撹拌する構成を採用しているので、ト
ナーの電荷消滅を防ぐことができ、記録が行なわれず長
時間放置された直後からカブリの少ない鮮明な画像記録
の行なえる画像記録装置を提供することができる。As is clear from the above description, the present invention provides a timer means for measuring the time during which the developing device is in a non-driving state where no recording is performed, and according to the time measured by the timer means. To provide an image recording device which can prevent the toner charge from disappearing by adopting a configuration that stirs the developer, and can record clear images with less fog immediately after being left alone for a long time without recording. be able to.
第1図は本発明の画像記録装置の構成を示すフ゛ロック
図、第2図、第3図は本発明の画像記録装置の処理手順
を説明するフローチャー1・図である。
1・・・制御回路 2・・・タイマー3・・
・現像装置駆動回路 4・・・モータ第1図
4
第2・図FIG. 1 is a block diagram showing the configuration of the image recording apparatus of the present invention, and FIGS. 2 and 3 are flowcharts 1 for explaining the processing procedure of the image recording apparatus of the present invention. 1... Control circuit 2... Timer 3...
・Developing device drive circuit 4...Motor Fig. 1 4 Fig. 2
Claims (2)
擦帯電させることにより電荷を発生させ感光体の潜像を
顕像化する画像記録装置において、記録が行なわれず現
像装置が非駆動状態にある時間を計測する手段を設け、
前記現像装置の非駆動時間が所定時間を超えた場合は前
記現像装置を空駆動し、前記現像剤を攪拌することを特
徴とする画像記録装置。(1) In an image recording device that generates a latent image on a photoreceptor by frictionally charging a two-component dry developer consisting of toner and carrier, recording is not performed and the developing device is in a non-driving state. Provide a means of measuring time,
An image recording apparatus characterized in that when the non-driving time of the developing device exceeds a predetermined time, the developing device is idle-driven and the developer is stirred.
定めるようにしたこと′f:特徴とする特許請記録動作
の準備シーフェンスに含まれ、前記の非駆動時間の長さ
に応じて記録動作に先立って前記現像装置が空駆動され
、前記の現像剤攪拌が行なわれることを特徴とする特許
請求の範囲第1項又は第2項に記載の画像記録装置。(2) The idle driving time is determined according to the length of the non-driving time. 3. The image recording apparatus according to claim 1, wherein the developing device is idle-driven and the developer is stirred prior to the recording operation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57096927A JPS58214174A (en) | 1982-06-08 | 1982-06-08 | Picture recording device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57096927A JPS58214174A (en) | 1982-06-08 | 1982-06-08 | Picture recording device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58214174A true JPS58214174A (en) | 1983-12-13 |
Family
ID=14177977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57096927A Pending JPS58214174A (en) | 1982-06-08 | 1982-06-08 | Picture recording device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58214174A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6239853A (en) * | 1985-08-15 | 1987-02-20 | Konishiroku Photo Ind Co Ltd | Automatic developing device |
JPS6246457U (en) * | 1985-09-09 | 1987-03-20 | ||
JPS62109069A (en) * | 1985-11-07 | 1987-05-20 | Casio Comput Co Ltd | Image forming device |
JPS62119564A (en) * | 1985-11-19 | 1987-05-30 | Casio Comput Co Ltd | Image forming device |
JPS63164766U (en) * | 1987-04-15 | 1988-10-27 | ||
US5311256A (en) * | 1990-06-04 | 1994-05-10 | Minolta Camera Kabushiki Kaisha | Image forming apparatus maintaining image density stability against humidity |
US5523832A (en) * | 1992-05-29 | 1996-06-04 | Minolta Camera Kabushiki Kaisha | Electrophotographic image forming apparatus with controlled mixing of developer |
US5692232A (en) * | 1992-08-31 | 1997-11-25 | Kabushiki Kaisha Toshiba | Electrophotographic apparatus that prevents toner from attaching to a contact member of a transfer device |
US5862442A (en) * | 1996-08-24 | 1999-01-19 | Samsung Electronics Co., Ltd. | Method for driving agitator |
EP0987608A2 (en) | 1998-09-18 | 2000-03-22 | Canon Kabushiki Kaisha | Unit detachably attachable to main body of image forming apparatus and image forming method and apparatus |
-
1982
- 1982-06-08 JP JP57096927A patent/JPS58214174A/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6239853A (en) * | 1985-08-15 | 1987-02-20 | Konishiroku Photo Ind Co Ltd | Automatic developing device |
JPS6246457U (en) * | 1985-09-09 | 1987-03-20 | ||
JPS62109069A (en) * | 1985-11-07 | 1987-05-20 | Casio Comput Co Ltd | Image forming device |
JPS62119564A (en) * | 1985-11-19 | 1987-05-30 | Casio Comput Co Ltd | Image forming device |
JPS63164766U (en) * | 1987-04-15 | 1988-10-27 | ||
US5311256A (en) * | 1990-06-04 | 1994-05-10 | Minolta Camera Kabushiki Kaisha | Image forming apparatus maintaining image density stability against humidity |
US5523832A (en) * | 1992-05-29 | 1996-06-04 | Minolta Camera Kabushiki Kaisha | Electrophotographic image forming apparatus with controlled mixing of developer |
US5692232A (en) * | 1992-08-31 | 1997-11-25 | Kabushiki Kaisha Toshiba | Electrophotographic apparatus that prevents toner from attaching to a contact member of a transfer device |
US5862442A (en) * | 1996-08-24 | 1999-01-19 | Samsung Electronics Co., Ltd. | Method for driving agitator |
EP0987608A2 (en) | 1998-09-18 | 2000-03-22 | Canon Kabushiki Kaisha | Unit detachably attachable to main body of image forming apparatus and image forming method and apparatus |
EP0987608A3 (en) * | 1998-09-18 | 2002-05-08 | Canon Kabushiki Kaisha | Unit detachably attachable to main body of image forming apparatus and image forming method and apparatus |
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