JPS62192765A - Copying device with variable nip quantity - Google Patents

Copying device with variable nip quantity

Info

Publication number
JPS62192765A
JPS62192765A JP61034071A JP3407186A JPS62192765A JP S62192765 A JPS62192765 A JP S62192765A JP 61034071 A JP61034071 A JP 61034071A JP 3407186 A JP3407186 A JP 3407186A JP S62192765 A JPS62192765 A JP S62192765A
Authority
JP
Japan
Prior art keywords
paper
size
nip
paper feed
timer
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
JP61034071A
Other languages
Japanese (ja)
Inventor
Tomoshi Sakata
智志 坂田
Chiharu Kobayashi
千春 小林
Hiroyuki Arai
浩之 新井
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP61034071A priority Critical patent/JPS62192765A/en
Publication of JPS62192765A publication Critical patent/JPS62192765A/en
Pending legal-status Critical Current

Links

Landscapes

  • Paper Feeding For Electrophotography (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

PURPOSE:To eliminate fluctuation of the tip of picture by making the quantity of nip of a copying paper to resist rollers variable according to the size of the copying paper and the course of feeding of the copying paper. CONSTITUTION:The quantity of nip is adjusted by changing time of continuation of rotation of delivery rollers 3, 4. That is, the tip of let out copying paper is detected by a paper feed sensor 6 provided before resist rollers 5, and at the same time, a built-in timer is started by an incorporated CPU, and the delivery rollers are stopped when the timer is counted up. accordingly, by setting the set time of the timer according to the size of copying paper and a selected paper feed cassette stage, the quantity of nip can be changed for each paper size and paper feed cassette. Thus, optimum quantity of nip to the resist rollers 5 for each paper feed course such as size of each copying paper, paper feed cassette state, etc., can be obtained.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、レジストローラへの複写紙のニップ量を可変
とした複写装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying apparatus in which the nip amount of copy paper to registration rollers is variable.

〔従来技術〕[Prior art]

従来、機械間でのレジストローラへの複写紙のニップ量
の補正を行なうことは行われていたが、紙サイズ、給紙
カセット段に応じてニップ量を変えることは行われてい
なかった。
Conventionally, the nip amount of copy paper to the registration rollers between machines has been corrected, but the nip amount has not been changed in accordance with the paper size and the paper feed cassette stage.

この結果、紙サイズや給紙カセット段如何によって複写
紙に複写される画像先端の位置にバラツキが生じること
があった。
As a result, the position of the leading edge of the image copied onto the copy paper may vary depending on the paper size and the stage of the paper feed cassette.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、レジストローラからの給紙の信頼性を
確保すると共に、そのレジストローラからの給紙スター
トより複写紙先端が感光体まで送られる時間を一定化で
きるようにして画像先端のバラツキを無くすることであ
る。
It is an object of the present invention to ensure the reliability of paper feeding from the registration rollers, and to make it possible to stabilize the time it takes for the leading edge of the copy paper to reach the photoreceptor from the start of paper feeding from the registration rollers, thereby eliminating variations in the leading edge of the image. It is to eliminate.

〔発明の構成〕[Structure of the invention]

このために本発明は、レジストローラへの複写紙のニッ
プ量を該複写紙の紙サイズ及び該複写紙の給紙経路に応
じて変更可能とした手段を有するように構成した。
For this purpose, the present invention is configured to include means that can change the nip amount of the copy paper to the registration rollers according to the paper size of the copy paper and the paper feeding route of the copy paper.

〔実施例〕〔Example〕

以下、本発明の実施例について説明する。まず、第1図
は複写装置の一部を示す図であり、給紙カセット1或い
は2の選択された一方からの複写紙は、第1給紙部とし
ての送り出しローラ3或いは4により送り出されて第2
給紙部としてのレジストローラ5に至り、そこで所定時
間だけ待機する。
Examples of the present invention will be described below. First, FIG. 1 is a diagram showing a part of a copying apparatus, in which copy paper from a selected one of paper feed cassettes 1 and 2 is sent out by a feed roller 3 or 4 as a first paper feed section. Second
The paper reaches the registration roller 5 as a paper feeding section, and waits there for a predetermined time.

このレジストローラ5の手前には第2給祇センサ6が設
置され、このセンサ6が複写紙を検出すると、当該の送
り出しローラが所定時間経過後に回転を停止する。
A second feed sensor 6 is installed in front of the registration roller 5, and when this sensor 6 detects copy paper, the corresponding feed roller stops rotating after a predetermined period of time has elapsed.

一方、回転ドラム形式の感光体7はコピースタートと所
定のタイミングをもって回転し、高圧帯電電極8により
帯電された部分に原稿の像を担持した露光光を照射され
るとそこに静電潜像を形成し、この潜像が現像部9によ
り現像されてトナー像が形成され、このトナー像が、上
記レジストローラ5から送り出された複写紙に転写電極
10で転写される。そして、トナー像が転写された複写
紙は、分離電極11によって感光体7から分離され、加
熱ローラでなる定着部12において熱定着され、排出さ
れる。
On the other hand, the photoreceptor 7 in the form of a rotating drum rotates at a predetermined timing with the copy start, and when the portion charged by the high-voltage charging electrode 8 is irradiated with exposure light carrying the image of the document, an electrostatic latent image is formed there. This latent image is developed by the developing section 9 to form a toner image, and this toner image is transferred by the transfer electrode 10 onto the copy paper fed out from the registration roller 5. The copy paper onto which the toner image has been transferred is separated from the photoreceptor 7 by a separation electrode 11, thermally fixed in a fixing section 12 consisting of a heating roller, and then discharged.

さて、上記したレジストローラ5へのニップ量は、送り
出しローラ3或いは4の回転継続時間及びレジストロー
ラ5と送り出しローラ3.4との間の距離によって決ま
るが、レジストローラ5と送り出しローラ3.4間の距
離を変更することは困難である。そこで、本実施例では
、送り出しローラ3.4の回転継続時間を変えることに
より、二ツブ量を調整することとした。
Now, the nip amount to the registration roller 5 described above is determined by the rotation duration of the delivery roller 3 or 4 and the distance between the registration roller 5 and the delivery roller 3.4. It is difficult to change the distance between. Therefore, in this embodiment, the amount of two-pieces is adjusted by changing the rotation duration of the delivery roller 3.4.

この送り出しローラ3.4の回転継続時間は、第2図の
ようにして決定する。即ち、第1給紙のために送り出し
ローラ3或いは4を回転させ、レジストローラ5の手前
に設置した第二給紙センサ6が送り出された複写紙の先
端を検出すると同時に、内蔵CPUにより内蔵タイマを
スタートさせ、そのタイマがカウントアツプ(フルカウ
ント)した時点で、当該の送り出しローラを停止させる
ことにより、行なう。
The duration of rotation of the feed roller 3.4 is determined as shown in FIG. That is, when the feed roller 3 or 4 is rotated for the first paper feed, and the second paper feed sensor 6 installed in front of the registration roller 5 detects the leading edge of the fed copy paper, the built-in CPU starts the built-in timer. This is done by starting the timer, and stopping the feed roller when the timer counts up (full count).

この結果、第二給紙センサ6が複写紙の先端を検出した
時点から送り出しローラ3.4が回転を停止するまでの
時間は、タイマの設定時間によって決まることとなる。
As a result, the time from when the second paper feed sensor 6 detects the leading edge of the copy paper until the feed roller 3.4 stops rotating is determined by the set time of the timer.

よって、タイマの設定時間を複写紙のサイズ、選択され
た給紙カセット段によって予め設定しておいて、それを
使用する複写紙サイズ、使用する給紙力セント段に応じ
て選択するようにすれば、ニップ量を紙サイズ、給紙カ
セット毎に変更することができる。
Therefore, it is recommended to set the timer setting time in advance according to the size of the copy paper and the selected paper feed cassette stage, and then select it according to the size of the copy paper to be used and the paper feed power center stage to be used. For example, the nip amount can be changed for each paper size and paper feed cassette.

このようにすることにより、各複写紙のサイズ、給紙カ
セット段等の給紙経路ごとの最適なレジストローラ5へ
のニップ量を得ることができ、よってレジストローラ5
からの給紙の信頼性を向上させることができると共に、
そのレジストローラ5からスタートした複写紙の先端が
感光体7に至るまでの継続時間を一定にし、画像先端の
バラツキを無くすることが可能となる。
By doing this, it is possible to obtain the optimum nip amount to the registration rollers 5 for each copy paper size and paper feed path such as paper feed cassette stage, etc.
It is possible to improve the reliability of paper feeding from
It is possible to make constant the time it takes for the leading edge of the copy paper starting from the registration roller 5 to reach the photoreceptor 7, thereby eliminating variations in the leading edge of the image.

〔発明の効果〕〔Effect of the invention〕

以上から本発明によれば、ニップ量を紙サイズや給紙経
路に応じて可変としているので、紙サイズや給紙経路に
応じて最適なニップ量を設定することができ、給紙の信
頼性、画像先端のバラツキ解消を実現することができる
As described above, according to the present invention, since the nip amount is made variable according to the paper size and paper feeding route, it is possible to set the optimal nip amount according to the paper size and paper feeding route, thereby improving the reliability of paper feeding. , it is possible to eliminate variations in the leading edge of the image.

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

第1図は本発明の適用する複写装置の一部の構成図、第
2図はタイミングチャート、第3図はフローチャートで
ある。 ■、2・・・給紙カセット、3.4・・・送り出しロー
ラ、5・・・レジストローラ、6・・・第2袷祇センサ
、7・・・感光体、8・・・帯電電極、9・・・現像部
、10・・・転写電極、11・・・分離電極、12・・
・定着部。
FIG. 1 is a block diagram of a part of a copying apparatus to which the present invention is applied, FIG. 2 is a timing chart, and FIG. 3 is a flow chart. ■, 2...Paper feed cassette, 3.4...Feeding roller, 5...Registration roller, 6...Second Fuki sensor, 7...Photoconductor, 8...Charging electrode, 9...Developing section, 10...Transfer electrode, 11...Separation electrode, 12...
・Fixing part.

Claims (2)

【特許請求の範囲】[Claims] (1)レジストローラへの複写紙のニップ量を該複写紙
の紙サイズ及び該複写紙の給紙経路に応じて変更可能と
した手段を有することを特徴とするニップ量を可変とし
た複写装置。
(1) A copying device with a variable nip amount, characterized by having a means for making it possible to change the nip amount of copy paper to the registration roller according to the paper size of the copy paper and the paper feeding path of the copy paper. .
(2)上記ニップ量を変更可能とする手段が、送り出し
ローラの回転継続時間の制御を行なう手段であることを
特徴とする特許請求の範囲第1項記載のニップ量を可変
とした複写装置。
(2) A copying apparatus with a variable nip amount according to claim 1, wherein the means for changing the nip amount is a means for controlling the rotation duration of the delivery roller.
JP61034071A 1986-02-19 1986-02-19 Copying device with variable nip quantity Pending JPS62192765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61034071A JPS62192765A (en) 1986-02-19 1986-02-19 Copying device with variable nip quantity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61034071A JPS62192765A (en) 1986-02-19 1986-02-19 Copying device with variable nip quantity

Publications (1)

Publication Number Publication Date
JPS62192765A true JPS62192765A (en) 1987-08-24

Family

ID=12404030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61034071A Pending JPS62192765A (en) 1986-02-19 1986-02-19 Copying device with variable nip quantity

Country Status (1)

Country Link
JP (1) JPS62192765A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000108481A (en) * 1998-10-06 2000-04-18 Tohoku Ricoh Co Ltd Paper feeding device in image forming equipment
JP2007326673A (en) * 2006-06-07 2007-12-20 Sharp Corp Image forming device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000108481A (en) * 1998-10-06 2000-04-18 Tohoku Ricoh Co Ltd Paper feeding device in image forming equipment
JP2007326673A (en) * 2006-06-07 2007-12-20 Sharp Corp Image forming device
JP4526510B2 (en) * 2006-06-07 2010-08-18 シャープ株式会社 Image forming apparatus

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