JPH01226650A - Sheet transporting device - Google Patents

Sheet transporting device

Info

Publication number
JPH01226650A
JPH01226650A JP63049884A JP4988488A JPH01226650A JP H01226650 A JPH01226650 A JP H01226650A JP 63049884 A JP63049884 A JP 63049884A JP 4988488 A JP4988488 A JP 4988488A JP H01226650 A JPH01226650 A JP H01226650A
Authority
JP
Japan
Prior art keywords
conveyance
paper
jam
sheet
section
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
JP63049884A
Other languages
Japanese (ja)
Inventor
Osamu Iwamoto
修 岩本
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP63049884A priority Critical patent/JPH01226650A/en
Publication of JPH01226650A publication Critical patent/JPH01226650A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE:To facilitate the disposal of jam when jam is generated at one among a plurality of transport parts by installing a control means which stops the drive of all the transport parts after the discharge of a sheet and operates a jam display part. CONSTITUTION:When any sensor 15-24 in a plurality of transport parts 4, 5, 6, and 7 detects the generation of paper jamming, the drive of only the transport part in which jamming is generated is brought into stop. At the same time, the branching devices 25-29 for introducing the paper in other transport parts into a temporary retreat stacker 13 are operated. After the drive for other transport is carried out for a certain time, if a sensor in the transport part does not detect the presence of paper, all the transport parts are brought into stop. Then, the generation of jamming or the position of generation of jamming are shown on a jam display part.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、たとえば複写装置内の用紙を搬送するシート
搬送装置に関するものであり、さらに詳しくは紙が滞溜
した際処理を行う構造に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sheet conveying device for conveying paper in a copying machine, for example, and more particularly to a structure for disposing of paper when it accumulates.

〔従来の技術〕[Conventional technology]

従来、たとえば電子写真複写機には、複写シートを装置
内に供給する給紙部、このシートに画像を転写する転写
部、転写の終ったシートを排出する排紙部等の連続する
複数のシート搬送部が設けられている。シートはこれら
の複数の搬送部を連続して搬送される。各搬送部の上は
、搬送中のシートを検出するセンサーが設けられる。ま
た、このセンサーによりシートの滞溜が検出される  
Conventionally, for example, an electrophotographic copying machine has a paper feed section that supplies copy sheets into the device, a transfer section that transfers images onto the sheets, and a paper discharge section that discharges the sheets after the transfer. A transport section is provided. The sheet is continuously conveyed through these plurality of conveyance sections. A sensor is provided above each conveyance unit to detect the sheet being conveyed. This sensor also detects sheet accumulation.
.

と、その旨を表示するジャム表示部が設けられる。A jam display section is provided to display this fact.

搬送系で紙詰まり、いわゆるジャムが生じた際の処理の
方法または構造には、種々のものが存在する。すなわち
、■シートの滞溜を検出すると全ての搬送部の駆動を止
めて表示部にジャム表示を行う方法、■あるいは特開昭
55−76365号等に記載されているように、ジャム
発生領域の上流側の搬送部に紙の累積領域を設け、上流
側の搬送部に存在している紙は全てその累積領域に収納
し、後で一括して廃棄する方法、■特開昭60−271
772号に2畿されているように複数の搬送路を設け、
ジャムが発生した場合には、その発生した搬送路のみを
停止し、他の搬送路を用いて通常の複写操作を行う方法
等が知られている。
There are various methods and structures for dealing with paper jams, so-called jams, in the conveyance system. In other words, (1) a method of stopping all conveying units and displaying a jam indication on the display when sheet accumulation is detected; A method of providing a paper accumulation area in the upstream conveyance section, storing all the paper present in the upstream conveyance section in the accumulation area, and disposing of it all at once, ■ JP-A-60-271
Provide multiple transport paths as shown in No. 772,
When a jam occurs, a method is known in which only the conveyance path where the jam occurred is stopped and normal copying operations are performed using another conveyance path.

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

しかし斯かる従来技術の場合には、前記■の方法による
と、ジャム発生の際には全ての搬送部を止めるので、ジ
ャムをおこした以外のシートも搬送路(搬送部)の途中
で止まってしまい、ジャム発生後のリカバー処理のため
には、この途中で止まったシートをも全て取り除かねば
ならないという欠点があった。また、■の方法では、シ
ートの累積領域が通常の搬送路(W11送)に設けられ
るため、ジャムが発生したために滞溜したシートの枚数
が多いと、この累積領域への収納の際に二次ジャムをお
こす危険性があった。また、■の方法では、複数の搬送
路を設けねばならないので、装置や制御方法が複雑にな
り装置の製造コストも倍増し実用的でなかった。
However, in the case of such conventional technology, according to method (2) above, all conveyance units are stopped when a jam occurs, so sheets other than those that caused the jam also stop in the middle of the conveyance path (conveyance unit). However, in order to perform recovery processing after a jam occurs, it is necessary to remove all the sheets that have stopped on the way. In addition, in method (2), the sheet accumulation area is provided on the normal conveyance path (W11 feed), so if there are a large number of sheets accumulated due to a jam, two sheets will be stored in this accumulation area. There was a risk of the next jam occurring. Furthermore, in method (2), a plurality of conveyance paths must be provided, which complicates the apparatus and control method and doubles the manufacturing cost of the apparatus, making it impractical.

本発明は上記した従来技術の課題を解決するためになさ
れたもので、その目的とするところは、簡単な構成で複
数の搬送部の1ケ所でジャムが発生した場合のジャム処
理を容易に行ない得るシート搬送装置を提供することに
ある。
The present invention has been made in order to solve the above-mentioned problems of the prior art, and its purpose is to easily dispose of a jam when a jam occurs at one location of a plurality of conveyance sections with a simple configuration. The object of the present invention is to provide a sheet conveying device that obtains the desired results.

〔課題を解決するための手段〕[Means to solve the problem]

独立駆動可能な複数の連続するシート搬送部を有すると
共に、各搬送部にはそれぞれシートの存在および滞溜を
検出するセンサを設け、該センサによってシート滞溜を
検出してジャム表示をするジャム表示部を備えたシート
搬送装置において、前記センサのいずれかがシート滞溜
を検出した際に、当該センサの属する搬送部のみの駆動
を停止して、他の搬送部に存在するシートは搬送部から
搬送経路外部に排出し、シート排出後に全ての搬送部の
駆動を停止して前記ジャム表示部を作動させる制御手段
を設けて成ることを特徴とする。
The jam indicator has a plurality of continuous sheet conveyance sections that can be driven independently, and each conveyance section is provided with a sensor that detects the presence and accumulation of sheets, and the sensor detects accumulation of sheets and displays a jam indication. In a sheet conveyance device equipped with a conveyor section, when any of the sensors detects sheet accumulation, driving of only the conveyance section to which the sensor belongs is stopped, and sheets existing in other conveyance sections are removed from the conveyance section. The sheet is discharged to the outside of the conveyance path, and a control means is provided for stopping driving of all the conveyance sections and operating the jam display section after the sheet is discharged.

〔作   用〕[For production]

上記構成のシート搬送装置にあっては、複数の搬送部の
うちいずれかにシートの掃溜が生じた場合、当該搬送部
のみ駆動を停止する。−1他の搬送部に存在するシート
は搬送部から搬送経路外部・に排出され、その後金ての
搬送部が停止される。
In the sheet conveyance device configured as described above, if sheet piling occurs in any one of the plurality of conveyance units, driving of only that conveyance unit is stopped. -1 Sheets existing in other conveyance sections are discharged from the conveyance section to the outside of the conveyance path, and then the other conveyance sections are stopped.

全ての搬送部が停止した後、ジャムが発生した搬送部に
滞溜したシートを除去する。
After all conveyance units have stopped, the sheets accumulated in the conveyance unit where the jam occurred are removed.

〔実 施 例〕〔Example〕

以下に本発明を図示の実施例に基づいて説明する。第1
図は本発明の一実施例に係るシート搬送装置が適用され
た複写装置のシート搬送系が示されている。
The present invention will be explained below based on illustrated embodiments. 1st
The figure shows a sheet conveyance system of a copying machine to which a sheet conveyance device according to an embodiment of the present invention is applied.

すなわちケース1.2.3から供給される転写紙は、複
数の搬送部4,5,6.7を経て最終的に排紙トレイ8
に排紙される0本実施例において複数の搬送部は1紙ケ
ース1,2.3から転写紙を取り出して機械内部に紙を
供給するための給紙系搬送部4.9送されてきた転写紙
に画像を転写するための転写系搬送部5、両面複写や多
重複写の場3合に紙を反転させたり送り返したりするた
めの中間搬送部6、転写された画像を定着し排紙トレイ
に紙を搬出する排紙系搬送部7である。これらの搬送部
はそれぞれ独立駆動可能であり、したがって一部の搬送
部のみの駆動を停止し、他の搬送部を駆動させることが
できる。ケースl、2゜3のいずれかから取り出された
転写紙は、給紙ローラ9を通り、転写ドラムlOから画
像を転写され、定着器11で画像が定着された後、排紙
トレイ8に排紙される。転写ドラム10表面には、たと
えば公知の静電写真方式によって転写すべき画像が形成
されている。
That is, the transfer paper supplied from case 1.2.3 passes through multiple conveyance units 4, 5, 6.7, and finally reaches paper output tray 8.
In this embodiment, a plurality of conveyance units are used to take out the transfer paper from the paper case 1, 2.3 and feed the paper into the machine. A transfer system transport section 5 for transferring the image onto transfer paper, an intermediate transport section 6 for reversing or sending the paper back in case of double-sided copying or multiple copying, and a paper output tray for fixing the transferred image. This is a paper ejection system transport section 7 that transports paper. Each of these conveyance units can be driven independently, so that it is possible to stop driving only some of the conveyance units and drive the other conveyance units. The transfer paper taken out from either case 1 or 2゜3 passes through the paper feed roller 9, has the image transferred from the transfer drum IO, and after the image is fixed by the fixing device 11, is discharged to the paper discharge tray 8. It is papered. An image to be transferred is formed on the surface of the transfer drum 10 by, for example, a known electrostatic method.

同じ紙の同じ面に複数の画像を転写する多重複写の場合
は、転写紙は一度転写系搬送部5を搬送された後、分岐
器25.26を通って中間搬送部6へ搬送され、初めの
給紙系搬送部4へ戻される。
In the case of multiple copying in which multiple images are transferred to the same side of the same paper, the transfer paper is once conveyed through the transfer system conveyance section 5 and then conveyed to the intermediate conveyance section 6 through the branching devices 25 and 26. The paper is returned to the paper feeding system transport section 4.

また、−枚の転写紙の両面に転写する画面複写の場合は
、−度転写系搬送部5を通った転写紙は分岐器25を通
り、両面用トレイ12に送られた後スイッチバック(進
行方向転換)されて初めの給紙系搬送部4に戻る。また
各搬送部4,5゜6.7には、それぞれ紙の存在および
滞溜を検出するセンサー15〜24が設けられている。
In addition, in the case of screen copying in which transfer is performed on both sides of -sheets of transfer paper, the transfer paper that has passed through the -transfer system conveyance section 5 passes through the branching device 25, is sent to the duplex tray 12, and then is switched back (proceeding). direction) and returns to the initial paper feeding system transport section 4. Further, each of the conveying sections 4, 5.degree. 6.7 is provided with sensors 15 to 24 for detecting the presence and accumulation of paper, respectively.

給紙系搬送部4の下流側には分岐器27が設けられ、こ
の分岐器27によって導かれた紙が排出される一時退避
スタッカー13が設けられている。転写系搬送部5の下
流側にすでに存在している2つの分岐器25.26の間
に、新たに分岐器28を設け、この新たな分岐器28に
よって導かれた紙が前記−時退避スタッカ−13に排出
される構造となっている。さらに中間搬送部6の下流側
に分岐器29が設けられ、この分岐器29によって前記
−時退避スタッカ−13に紙を排出するようになってい
る。
A branch 27 is provided on the downstream side of the paper feeding system transport section 4, and a temporary evacuation stacker 13 is provided from which the paper guided by the branch 27 is discharged. A new branch 28 is installed between the two branches 25 and 26 that already exist on the downstream side of the transfer system conveyance section 5, and the paper guided by this new branch 28 is transferred to the above-mentioned - time evacuation stacker. -13 is designed to be discharged. Furthermore, a branch 29 is provided on the downstream side of the intermediate conveying section 6, and the paper is discharged to the above-mentioned - time evacuation stacker 13 by this branch 29.

次に本実施例の作用について説明する0例えば、排紙系
搬送flA7内の定着器11に設けられている定着ロー
ラーにおいて紙ジヤムが発生した場合には、この排紙系
搬送部7に存在するセンサー23.24が紙の滞溜を検
出し、この排紙系搬送部7の駆動を停止する。その際、
他の転写紙を一時一時退避スタッカー13へ導くための
分岐器27.28.29を作動させる。他の搬送部4゜
5.6は駆動させたままなので、まず給紙系搬送部4内
の転写紙は分岐器27から退避スタッカー13へ導かれ
、転写系搬送部5の紙は分岐器28を経て退避スタッカ
ー13へ導かれ、中間搬送部6の紙は分岐器29により
一時退避スタッカー13へ導かれて排出される。これら
他の搬送部4,5.6を駆動させたまま、一定時間経過
した後に、これら搬送部4,5.6のセンサー15〜2
2が紙の存在を検出していなければ、全搬送部4,5,
6.7を停止させ、ジャム表示部にジャム発生の表示を
行う、このとき表示部にジャム発生の位置をあわせて表
示するものであってもかまわない、また、−時退避スタ
ッカ−13に規定以上の量の紙が溜ると図中の紙センサ
−30が検知しこれを表示する。
Next, we will explain the operation of this embodiment. Sensors 23 and 24 detect the accumulation of paper and stop the drive of the paper ejection system transport section 7. that time,
The branch devices 27, 28, and 29 for guiding other transfer sheets to the temporary evacuation stacker 13 are activated. Since the other conveyance sections 4.5. The paper in the intermediate conveyance section 6 is guided to the temporary evacuation stacker 13 by a branching device 29 and is discharged. After a certain period of time has elapsed while these other transport units 4, 5.6 are being driven, the sensors 15 to 2 of these transport units 4, 5.6 are
2 does not detect the presence of paper, all conveyance sections 4, 5,
6.7 is stopped and the occurrence of a jam is displayed on the jam display section.At this time, the position of the jam occurrence may also be displayed on the display section. When the above amount of paper accumulates, the paper sensor 30 in the figure detects and displays this.

第2図は本実施例の制御手段を表わすブロック図である
。全体の制御は、CPU31のプログラム制御によって
行われる。ROM32は、その制御用のプログラムをあ
らかじめ記憶してl、%る。
FIG. 2 is a block diagram showing the control means of this embodiment. Overall control is performed by program control of the CPU 31. The ROM 32 stores a control program in advance.

RAM33は、そのプログラムの実行に際してワーキン
グエリアとして用いられる0紙の滞溜や存在を検出する
センサー15〜24からの紙検出信号は、I10インタ
ーフェイス34を通してCPU31が検知し搬送部4〜
7やジャム表示部36に対して入出力制御を行う。
The RAM 33 is used as a working area when executing the program. Paper detection signals from sensors 15 to 24 that detect the accumulation or presence of paper are detected by the CPU 31 through the I10 interface 34 and sent to the transport units 4 to 24.
7 and the jam display section 36.

第3図は上記で説明した制御手順のフローチャートであ
る。改めて説明すると、複数の搬送部4,5,6.7の
いずれかのセンサー15〜24が、紙のジャム(滞溜)
発生を検出すると(STEPI)、そのジャムが発生し
た搬送部の駆動のみを停止する(STEP2)、同時に
他の搬送部内に存在する紙を一時退避スタッカー13へ
導くための分岐器25〜29を作動させる(STEP3
)、そして一定時間、これら他の搬送の駆動を行った後
、これらの搬送部のセンサーが紙の存在を検出していな
ければ全搬送部を停止する(STEP4.5)、そして
ジャム表示部に、ジャムの発生あるいは、さらにジャム
発生の位置を表示する。
FIG. 3 is a flowchart of the control procedure explained above. To explain again, any one of the sensors 15 to 24 of the plurality of conveyance units 4, 5, 6.7 detects paper jam (accumulation).
When the occurrence of the jam is detected (STEPI), only the driving of the conveyance section where the jam has occurred is stopped (STEP2), and at the same time, the branchers 25 to 29 for guiding the paper existing in other conveyance sections to the temporary evacuation stacker 13 are activated. (STEP 3)
), and after driving these other conveyances for a certain period of time, if the sensors of these conveyance sections do not detect the presence of paper, all conveyance sections are stopped (STEP 4.5), and a message appears on the jam display section. , the occurrence of a jam or the location of the occurrence of a jam.

〔他の実施例〕[Other Examples]

第1図の中間搬送部の中には従来から中間トレイ14が
設けられている。この中間トレイを利用して一時退避ス
タッカー13のかわりをさせることもできる。すなわち
中間搬送部6内の転写紙は、紙ジヤムが発生したときに
おいても一時退避スタッカー13まで搬送されず、この
中間トレイ14に止めておく、そうすれば紙ジヤムのり
カッ(リー処理が終った後に、この中間トレイ内の紙を
用いて続けて複写することができ、その分、紙が無駄に
ならない。
Conventionally, an intermediate tray 14 is provided in the intermediate conveyance section shown in FIG. This intermediate tray can also be used in place of the temporary evacuation stacker 13. In other words, even when a paper jam occurs, the transfer paper in the intermediate conveyance section 6 is not conveyed to the temporary evacuation stacker 13, but is stopped on this intermediate tray 14, so that the paper jam will not be glued (until the paper jam is finished). Later, the paper in this intermediate tray can be used for subsequent copying, so that paper is not wasted.

尚、本発明のシート搬送装置は、電子写真複写機に限る
ものではなく、複数のI!l続する搬送部を備えたコン
ピュータの出力プリンタや各種印刷機等にも適用し得る
ものである。
Note that the sheet conveyance device of the present invention is not limited to an electrophotographic copying machine, but is applicable to a plurality of I! The present invention can also be applied to computer output printers and various printing machines that are equipped with continuous conveyance units.

〔発明の効果〕〔Effect of the invention〕

本発明は以上の構成および作用から成るもので、シート
のジャムが発生した際に、複数の搬送部のうちジャムが
発生した部分のみの駆動を停止し、他の搬送部のシート
を搬送経路外に排出するようにしたので、ジャムが発生
した搬送部のみのシートの摘出だけを行なえばよく、他
の搬送部のシートを取除く手間が省け、ジャムリカバリ
−の時間を短縮することができる。また通常の搬送部に
シートが滞溜しないので2次ジャムの発生の危険性はな
い、また別の搬送系を設ける必要もなくコスト低減を図
ることもできる。
The present invention has the configuration and operation described above, and when a sheet jam occurs, the drive of only the part where the jam has occurred among the plurality of conveyance units is stopped, and the sheets in other conveyance units are removed from the conveyance path. Since the sheet is discharged at the same time, it is only necessary to remove the sheet from the conveyance section where the jam has occurred, which saves the effort of removing sheets from other conveyance sections, and reduces the jam recovery time. Further, since the sheets do not accumulate in the normal conveyance section, there is no risk of secondary jams occurring, and there is no need to provide a separate conveyance system, making it possible to reduce costs.

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

第1図は本発明の一実施例を示すシート搬送装置の搬送
路の概念図、第2図は本実施例の制御手段を表わすブロ
ック図、第3図は本実施例の作用を示す制御フローチャ
ート図である。 符号の説明 1.2.3・・・紙ケース 4.5,6.7・・・搬送部 8・・・排紙トレイ    9・・・給紙ローラlO・
・・転写ドラム   11・・・定着器12・・・両面
用トレイ 13・・・−時退避スタッカ− 14・・・中間トレイ 15〜24.30・・・センサー 25〜29・・・分岐器
FIG. 1 is a conceptual diagram of a conveying path of a sheet conveying device showing one embodiment of the present invention, FIG. 2 is a block diagram showing a control means of this embodiment, and FIG. 3 is a control flow chart showing the operation of this embodiment. It is a diagram. Explanation of symbols 1.2.3...Paper case 4.5, 6.7...Transport unit 8...Paper output tray 9...Paper feed roller lO・
...Transfer drum 11...Fixer 12...Double-sided tray 13...-Time evacuation stacker-14...Intermediate tray 15-24.30...Sensor 25-29...Branch

Claims (1)

【特許請求の範囲】[Claims] 独立駆動可能な複数の連続するシート搬送部を有すると
共に、各搬送部にはそれぞれシートの存在および滞溜を
検出するセンサを設け、該センサによってシート滞溜を
検出してジャム表示をするジャム表示部を備えたシート
搬送装置において、前記センサのいずれかがシート滞溜
を検出した際に、当該センサの属する搬送部のみの駆動
を停止して、他の搬送部に存在するシートは搬送部から
搬送経路外部に排出し、シート排出後に全ての搬送部の
駆動を停止して前記ジャム表示部を作動させる制御手段
を設けて成ることを特徴とするシート搬送装置。
The jam indicator has a plurality of continuous sheet conveyance sections that can be driven independently, and each conveyance section is provided with a sensor that detects the presence and accumulation of sheets, and the sensor detects accumulation of sheets and displays a jam indication. In a sheet conveyance device equipped with a conveyor section, when any of the sensors detects sheet accumulation, driving of only the conveyance section to which the sensor belongs is stopped, and sheets existing in other conveyance sections are removed from the conveyance section. 1. A sheet conveying apparatus, comprising a control means for discharging the sheet to the outside of a conveying path, stopping driving of all conveying sections after discharging the sheet, and activating the jam display section.
JP63049884A 1988-03-04 1988-03-04 Sheet transporting device Pending JPH01226650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63049884A JPH01226650A (en) 1988-03-04 1988-03-04 Sheet transporting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63049884A JPH01226650A (en) 1988-03-04 1988-03-04 Sheet transporting device

Publications (1)

Publication Number Publication Date
JPH01226650A true JPH01226650A (en) 1989-09-11

Family

ID=12843464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63049884A Pending JPH01226650A (en) 1988-03-04 1988-03-04 Sheet transporting device

Country Status (1)

Country Link
JP (1) JPH01226650A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02147575A (en) * 1988-11-30 1990-06-06 Mita Ind Co Ltd Image forming device
JPH02248968A (en) * 1989-03-23 1990-10-04 Ricoh Co Ltd Both surface image forming device
JPH04246046A (en) * 1991-01-29 1992-09-02 Fujitsu Ltd Printer
EP0743566A2 (en) * 1995-05-16 1996-11-20 Canon Kabushiki Kaisha Sheet conveying apparatus and image forming apparatus
JP2002019994A (en) * 2000-07-10 2002-01-23 Katsuragawa Electric Co Ltd Sheet carrying method and sheet carrier
JP2009050378A (en) * 2007-08-24 2009-03-12 Daito Seisakusho:Kk Bill conveying device
JP2009220966A (en) * 2008-03-17 2009-10-01 Ricoh Co Ltd Image forming device
US7609983B2 (en) * 2005-09-13 2009-10-27 Canon Kabushiki Kaisha Image forming apparatus and sheet heating apparatus
JP2010275082A (en) * 2009-05-29 2010-12-09 Toshiba Corp Paper sheet processor
JP2019048395A (en) * 2017-09-08 2019-03-28 セイコーエプソン株式会社 Recording device, and control method for recording device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02147575A (en) * 1988-11-30 1990-06-06 Mita Ind Co Ltd Image forming device
JPH02248968A (en) * 1989-03-23 1990-10-04 Ricoh Co Ltd Both surface image forming device
JPH04246046A (en) * 1991-01-29 1992-09-02 Fujitsu Ltd Printer
EP1607801A1 (en) * 1995-05-16 2005-12-21 Canon Kabushiki Kaisha Sheet conveying apparatus and image forming apparatus
EP0743566A2 (en) * 1995-05-16 1996-11-20 Canon Kabushiki Kaisha Sheet conveying apparatus and image forming apparatus
EP0743566A3 (en) * 1995-05-16 1999-11-24 Canon Kabushiki Kaisha Sheet conveying apparatus and image forming apparatus
US6011936A (en) * 1995-05-16 2000-01-04 Canon Kabushiki Kaisha Image forming apparatus having recovery process for jammed sheets
JP2002019994A (en) * 2000-07-10 2002-01-23 Katsuragawa Electric Co Ltd Sheet carrying method and sheet carrier
US7609983B2 (en) * 2005-09-13 2009-10-27 Canon Kabushiki Kaisha Image forming apparatus and sheet heating apparatus
JP2009050378A (en) * 2007-08-24 2009-03-12 Daito Seisakusho:Kk Bill conveying device
JP2009220966A (en) * 2008-03-17 2009-10-01 Ricoh Co Ltd Image forming device
JP2010275082A (en) * 2009-05-29 2010-12-09 Toshiba Corp Paper sheet processor
JP2019048395A (en) * 2017-09-08 2019-03-28 セイコーエプソン株式会社 Recording device, and control method for recording device

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