JPS58174965A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPS58174965A JPS58174965A JP5938082A JP5938082A JPS58174965A JP S58174965 A JPS58174965 A JP S58174965A JP 5938082 A JP5938082 A JP 5938082A JP 5938082 A JP5938082 A JP 5938082A JP S58174965 A JPS58174965 A JP S58174965A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- sheet
- conveyance unit
- roll
- conveyance
- 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
- G03G15/65—Apparatus which relate to the handling of copy material
- G03G15/6555—Handling of sheet copy material taking place in a specific part of the copy material feeding path
- G03G15/6558—Feeding path after the copy sheet preparation and up to the transfer point, e.g. registering; Deskewing; Correct timing of sheet feeding to the transfer point
- G03G15/6561—Feeding path after the copy sheet preparation and up to the transfer point, e.g. registering; Deskewing; Correct timing of sheet feeding to the transfer point for sheet registration
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
- G03G2215/00405—Registration device
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00535—Stable handling of copy medium
- G03G2215/0054—Detachable element of feed path
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00535—Stable handling of copy medium
- G03G2215/00548—Jam, error detection, e.g. double feeding
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sorting Of Articles (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は画像形成装置に係り１％にはシート状部材がそ
の搬送通路内につ壕ったときの処理。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image forming apparatus, and particularly relates to processing when a sheet-like member becomes entangled in its conveyance path.
即ち、ジャム処理を筒単に効率よく行うことができる画
像形成装置に＠する。In other words, the present invention provides an image forming apparatus that can easily and efficiently handle jams.
近年複写装置等の画像形成装置はコンパクト化、高速化
が要求されている。コンパクト化に伴いシート状の複写
材（以下複写紙と称す）の通路長は短くなシ、また、高
速化に伴い連続して送られる複写紙と複写紙の搬送間隔
は短くなっているのでジャムし易い欠点がある。したが
って、迅速なジャム処理祉ロスタイムを嫂くするのに役
立ち、その丸めに複写紙載置部、搬送路を複写装置本体
と分割しおのおのを可動にし操作者側に引き出せるよう
にして迅速な処理を可能にした装置も多い。In recent years, image forming apparatuses such as copying machines have been required to be more compact and faster. Due to compactness, the path length of sheet-like copying material (hereinafter referred to as copying paper) has become shorter, and as speeds have increased, the conveyance interval between successive copies of copying paper has become shorter, leading to jams. There are easy drawbacks. Therefore, it is useful for quick jam handling and reduces loss time.In addition, the copy paper loading section and conveyance path can be separated from the main body of the copying machine, and each can be made movable and pulled out toward the operator, allowing for quick processing. There are many devices that make this possible.
しかるにこの様に装置を引き出し自在の可動ユニットに
構成することによって傷害も発生する。ジャム時複写紙
が分割された可動ユニット間をまたいで停止した場合、
そのままでユニットを引き出すと複写紙がユニット間に
圧縮されテユニットが動か危くなったり複写紙が切れて
弱片がユニットや機内に残り、完全なジャム処理の障害
になる欠点があった。However, by configuring the device as a movable unit that can be freely pulled out, injuries may occur. If the copy paper stops across the divided movable units during a jam,
If the unit is pulled out in that state, the copy paper will be compressed between the units, making the unit unstable, or the copy paper may break, leaving weak pieces in the unit or inside the machine, which can hinder complete jam clearance.
本発明の目的は、上記従来技術の欠点を解消し、画像形
成装置内でジャムラたシート状部材を、すばやく簡単に
、そして完全に除去することができる画像形成装置を提
供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming apparatus that eliminates the drawbacks of the above-mentioned prior art and allows for quick, easy, and complete removal of jammed sheet-like members within the image forming apparatus.
本発明はシート状部材の搬送を案内する搬送路を備え、
画像形成装置本体に対して引き出し可能な、シート状部
材を搬送する搬送ユニットを備えた１Ｉｌｉ儂形成装置
にお込て、該搬送路を２以上備え九搬送ユニットと。The present invention includes a conveyance path for guiding conveyance of a sheet-like member,
A 9-conveying unit is included in a self-forming apparatus that is equipped with a conveyance unit that conveys a sheet-like member that can be pulled out from the main body of the image forming apparatus, and that includes two or more such conveyance paths.
該搬送ユニットに設けられ、２以上の搬送路のシート状
部材を骸ユニットに対して不動に拘束可能な拘束手段
とを有し、シート状部材を諌搬送ユニットに対して不動
に拘束して諌シート状部材を搬送ユニットと共に引き出
すことを特徴とするものである。A restraining means is provided on the conveyance unit and is capable of immovably restraining the sheet-like members of two or more conveyance paths with respect to the skeleton unit, and the sheet-like member is immovably restrained with respect to the rod conveyance unit. The feature is that the sheet-like member is pulled out together with the conveyance unit.
以下本発明の一実施例を図面によゆ説明する。An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の実施例を示す電子写真複写機の側断面
図である。感光ドラム上にれ周知の電子写真法により、
潜１ｍ形成部とで形成された潜儂が現侭部見て現会され
る。その後感光ドラム５け現像を担持した状態で回転し
転写部工へ至り、転写部二に搬送された複写紙上に現像
が１２ｂで送り出されるとレジスタロー２２によってド
ラム５の転写部工に同期して送夛込まれ、転写帯電器４
でドラム３上の現像を転写された後、分離部Σてドラム
３から分離され、定着前搬送部μ、定着部ム、定着後搬
送部見を経て排紙トレイ９に排出されて複写を完了する
。FIG. 1 is a side sectional view of an electrophotographic copying machine showing an embodiment of the present invention. By the well-known electrophotographic method,
The sub-1m formation section and the sub-container formed in the sub-1m formation section are then reconvened. Thereafter, the five photosensitive drums rotate while carrying the developer and reach the transfer section, and when the developer is sent out at 12b onto the copy paper conveyed to transfer section 2, it is synchronized with the transfer section of drum 5 by the register row 22. Incorporated transfer charger 4
After the developed image on the drum 3 is transferred, it is separated from the drum 3 by the separating section Σ, passes through the pre-fixing transport section μ, the fixing section M, and the post-fixing transport section, and is then discharged to the paper output tray 9 to complete copying. do.
第１図中、例えば、１点鎖線で囲った分離搬送ユニット
Ｃけ独立して搬送ユニット化されており、複写機本体に
対して引き出し可能に構成されている。第２図は下給紙
台部人と分離搬送部旦の斜視図である。昇降機１０によ
って上昇させられた複写紙Ｐは給紙Ｖ−ラ１２ａが矢印
方向に回転するので最上紙から１枚ずつ願次給送ｒれる
。給紙ローラ１２ａで給紙された複写紙は複写紙の連さ
Ｖより大きな周速で回転する下駆動ローラ１１ａＫｍＤ
斜め上方に方向転換して搬送され急勾配のガイド板１３
を滑らかＫすべり停止しているレジストローラ２の圧接
部に先端を突込み小さいループを作つ良状態で給紙ロー
ラ１２＆も停止し、レジストローラ２の回転開始によっ
てガイド板１４ａ、１４ｂ間を通って転写部工に入る。In FIG. 1, for example, the separation and conveyance unit C surrounded by the dashed line is an independent conveyance unit, and is configured to be able to be pulled out from the main body of the copying machine. FIG. 2 is a perspective view of the lower sheet feeding tray and the separation conveyance section. The copy sheets P raised by the elevator 10 are fed one by one starting from the topmost sheet as the paper feed roller 12a rotates in the direction of the arrow. The copy paper fed by the paper feed roller 12a is transferred to the lower drive roller 11aKmD, which rotates at a peripheral speed greater than the length V of the copy paper.
A steeply sloped guide plate 13 that is conveyed by changing direction diagonally upward
The paper feed roller 12& will also stop when it is in good condition, and when the registration roller 2 starts rotating, it will pass through between the guide plates 14a and 14b. Joined the transcription department.
給紙ローラと下駆動ローラ１１ａの間に紙検知用センサ
１５ａ、１６ａ、１７ａがローラ１１ａの軸１８方向に
沿って並んでいる。同セ／す１５ａ、１６ａ、１７ａは
受光側でｉｂり、ガイド板１５の裏面＠に発光側センナ
を有している。この５組のセンサのうち１５！Ｌ、１６
ａは給紙された複写紙Ｐの遅延および斜行を検知するた
めセンサ１５＆とセンサ１６ａの間隔は通紙可能な最小
複写紙の幅よシも短く配置されている。また、レジスト
ローラ２の紙の進行方向下流に前述と同様に紙検知セン
サ−１９ａ。Paper detection sensors 15a, 16a, and 17a are arranged between the paper feed roller and the lower drive roller 11a along the axis 18 direction of the roller 11a. The cells 15a, 16a, and 17a are arranged on the light receiving side and have a light emitting side sensor on the back surface of the guide plate 15. 15 out of these 5 sets of sensors! L, 16
In order to detect the delay and skew of fed copy paper P, the distance between sensor 15& and sensor 16a is set to be shorter than the width of the smallest copy paper that can be passed. Further, a paper detection sensor 19a is provided downstream of the registration roller 2 in the paper traveling direction as described above.
２１１の２組が配置されておシ、レジストローラ２の回
転開始からの複写紙の遅ｇＫよるつまシや斜行を検知し
ている。センサーｉ９ａとセンサー２０ａの間隔はセン
サー１５＆とセンサー１６ａの間隔と同じである。Two sets of rollers 211 are arranged to detect jamming or skewing of the copy paper due to a delay in the rotation of the registration roller 2 from the start of rotation. The distance between sensor i9a and sensor 20a is the same as the distance between sensor 15& and sensor 16a.
ト
斜行の検知へ駆動ローラー１ｍと平行に設けたセンサー
１５１Ｌと１６ａへの紙先端の到達時間の差で計欄する
が、センサー１９１およびセンサー２０ａの計測量は、
前者の計測量よりも小さくしである。それは、レジスト
ローラ２で斜行が少し修整されるのでセンサーｊ５ａ、
１６ａの方がゆるく設定できるためである。具体的には
本装置は１パルスが１■長に決められてお夛、センサー
１５ａとセンサー１６ｍは複写紙の検知差が８パルス以
−Ｆ生ずると斜行とし給紙ローラー２ａの回転を停止さ
せる。またセンサー１９ａとセンサー２０ａの複写紙の
検知差が４パルス以上生ずると斜行と判断する。To detect the skew, the difference in the arrival time of the leading edge of the paper to the sensors 151L and 16a, which are installed parallel to the drive roller 1m, is calculated.
This is smaller than the former measurement quantity. This is because the skew is slightly corrected by the registration roller 2, so the sensor j5a,
This is because 16a can be set more loosely. Specifically, in this device, one pulse is determined to have a length of 1 inch, and the sensor 15a and the sensor 16m operate skewly when the difference in detection of the copy paper is 8 pulses or more, and stop the rotation of the paper feed roller 2a. let Further, if the difference in detection of the copy paper between the sensor 19a and the sensor 20a is 4 pulses or more, it is determined that skew feeding is occurring.
このようにして、斜行やつ−Ｂによるジャム状態が検知
されると次のようにジャム処理機構が働く。第３図１は
、上下の給紙台部Ａｌからレジストローラ２へ向って紙
が送られる際の側断面図である、ガイド板２１の上流端
の上駆動ローラー１ｂは腕２７で支持される。この腕は
ガイド板２１０両端に一対設けられておシ、複写機本体
に対して不動の軸２２に軸支されている。In this manner, when a jam condition due to skew or -B is detected, the jam removal mechanism operates as follows. FIG. 3 1 is a side sectional view when paper is fed from the upper and lower paper feed tables Al toward the registration rollers 2. The upper drive roller 1b at the upstream end of the guide plate 21 is supported by an arm 27. . A pair of arms are provided at both ends of the guide plate 210, and are pivotally supported by a shaft 22 that is immovable relative to the main body of the copying machine.
一方、中間のガイド＠２５の上流端には、上記不動輪２
２で軸支され回動可＃！表囲動腕２４の端に支持された
従動コロ２５が設けられている。On the other hand, at the upstream end of the intermediate guide @25, the stationary wheel 2
Pivotally supported with 2 and can be rotated #! A driven roller 25 supported at the end of the surface moving arm 24 is provided.
下側のガイド板１５０上流端には下駆動ローラ１１ａが
設けられ、下絵紙台１１Ａから送り出された複写紙の先
端を受けてレジストローラ２伺え方向転換させることが
できる。駆動ローラ１１ａ。A lower drive roller 11a is provided at the upstream end of the lower guide plate 150, and can change the direction of the registration roller 2 in response to the leading edge of the copy paper sent out from the sketch paper table 11A. Drive roller 11a.
１１ｔ）及び従動コロ２５はいづれもレジストローラ２
と略平行の各軸に設けられているか、各軸に沿って全域
に設けてもよく、また複数のコロを設けてもよい。11t) and driven roller 25 are both registration rollers 2.
The rollers may be provided on each axis substantially parallel to the rollers, or may be provided over the entire area along each axis, or a plurality of rollers may be provided.
第５図（ａ）は通常の状態であシ、上絵紙台使用の場合
は給紙ローラ１２ｍ）の回転で複写紙Ｐ′が送られ、下
絵紙台使用の場合は給紙ローラ１２ａの回転で複写紙Ｐ
が送られる。紙検知センサー１６＆、１６１）で紙の遅
嬌および斜行が検知された場合、即ち、給紙装置は停止
される。ジャム紙の下流にある正常紙はそのｆｆ送られ
排紙トレイ９ｆで達する。紙検知センサー１９ｍ、１９
６と２０ａ。Fig. 5(a) shows the normal state, in which the copy paper P' is fed by the rotation of the paper feed roller 12m) when the overprint paper holder is used, and when the copy paper P' is rotated by the rotation of the paper feed roller 12a when the underprint paper holder is used. Copy paper P by rotation
will be sent. When the paper detection sensor 16&, 161) detects paper slowness and skew, that is, the paper feeding device is stopped. The normal paper located downstream of the jammed paper is fed by its ff and reaches the paper discharge tray 9f. Paper detection sensor 19m, 19
6 and 20a.
２０１）で複写紙の早遅、斜行が検知され九場合。201), when the copy paper is detected to be early or slow or skewed.
レジストローラ２および給紙ローラ１２＆と駆動ローラ
１１１Ｌは停止しジャム表示（不図示）をするが、セン
ｆ−１４ｍ、１６ｂ Ｋよって紙布が検知されるとロー
タリソレノイド中ソレノイド°とプランジャー等の手段
によ）回動腕２４を下は回転を絖ける駆動ローラ１１と
従動コロ２５で複写紙をガイド板１５．２５閾に送シ込
みセンサー１６ａ。Registration roller 2, paper feed roller 12&, and drive roller 111L stop and a jam display (not shown) is displayed, but when paper cloth is detected by sensors f-14m and 16bK, the rotary solenoid solenoid ° and plunger etc. Under the rotating arm 24, the driving roller 11 and the driven roller 25 feed the copy paper to the guide plate 15, 25 and the sensor 16a.
１６１）で緻無しを検知して駆動ローラ１１１Ｌの回転
の後分離搬送声旦を引き出し１回動腕２４の駆動をとけ
ば従動コロ２５は上昇するのでジャム紙線簡単に除去で
きる。161) detects the lack of density, and after the rotation of the drive roller 111L, the separating and conveying roller is pulled out and the drive of the rotating arm 24 is released, the driven roller 25 rises, so that the jammed paper line can be easily removed.
上給紙台見からの給送によるジャムの場合、ｂ−ラ１２
ｂの回転を停止させジャム表示をする。In the case of a jam caused by feeding from the upper paper tray, press b-ra12.
The rotation of b is stopped and a jam display is displayed.
一方、センサー２Ｑａ、２０ｂで複写紙の早遅、斜行が
検知され、かつセンサー１６１．１６ｔｌによる紙布が
検知された時、レジストローラ２と給紙ローラ１２ｂを
停止させ、駆動手段により回動腕２４を上方に回転させ
、回転中の駆動ローラＩｌｂと従動コロ２５によって複
写紙をはさみガイド板２１．２５関に複写紙を送シ込ん
でセンサー１６ａ。On the other hand, when the sensors 2Qa and 20b detect whether the copy paper is early, slow or skewed, and when the sensor 161.16tl detects paper cloth, the registration roller 2 and paper feed roller 12b are stopped and rotated by the drive means. The arm 24 is rotated upward, and the copy paper is sandwiched between the rotating drive roller Ilb and the driven roller 25, and the copy paper is fed to the guide plate 21.25 to the sensor 16a.
ば分離搬送部を３１４１ｉ手前に抜き出すと上記駆動手
段の駆動力を解除し１回動腕をもとの位置に復帰させる
構成にすればジャム処理は簡単である。これは分離搬送
部が全部引き出されてからでは指をはさむ等の危険があ
り、３Ａ根で戻せばジャム紙がたとえそＯとしによって
図の右側の方に出てもジャム紙０＠ｍｌＫ＃′ｉ特に問
題ないからである。For example, if the structure is such that when the separating and conveying section is pulled out in front of 3141i, the driving force of the driving means is released and the one-turn arm returns to its original position, the jam can be easily cleared. This is because there is a risk of getting your fingers caught after the separation conveyance unit is completely pulled out, so if you return it with the 3A root, even if the jammed paper comes out to the right side of the figure, the jammed paper 0@mlK#' This is because there is no particular problem.
本実施例によれば、上下の搬送路間で斜行したりつまっ
たジャム紙に対して、共通の拘束手段によって搬送路に
挾持することができ、搬送ユニット内にジャム紙を送り
込んで搬送ユニットを引きだすことができるので、簡単
な機構で迅速かつ完全にジャム紙の処理ができる。According to this embodiment, jammed paper that is skewed or jammed between the upper and lower conveyance paths can be held in the conveyance path by a common restraining means, and the jammed paper is fed into the conveyance unit and the jammed paper is fed into the conveyance unit. Since the paper can be pulled out, jammed paper can be disposed of quickly and completely with a simple mechanism.
本発明によれば、複数の搬送路をもつ搬送ユニットにお
いても各搬送路にジャム紙を拘束して送り込む手段を備
える必要がなく、簡単な構成でジャム紙の処理が、容具
にかつ迅速に、そして完全に行うことができる。According to the present invention, even in a conveyance unit having a plurality of conveyance paths, there is no need to provide means for restraining and feeding jammed paper to each conveyance path, and jammed paper can be disposed of quickly and easily in containers with a simple configuration. , and can be done perfectly.
第１図は本発明の一実施例を示す複写機の側明の実施例
を示し、上下給紙台部人、四からレジストローラへ向っ
て複写紙が送られる際の側断面図。
Ｈａ、１１ｂ・・・・、配置ローラ（拘束手段）１５．
２１．２３ ・・・・ガイド板（搬送路）２４・・・・
回動腕（拘束手段）
２５・・・従動コロ（拘束手段）FIG. 1 is a side cross-sectional view showing an embodiment of a copying machine according to an embodiment of the present invention, when copying paper is fed from upper and lower paper feed trays toward registration rollers. Ha, 11b..., arrangement roller (restraint means) 15.
21.23...Guide plate (conveyance path) 24...
Rotating arm (restraint means) 25... Driven roller (restraint means)
Claims (1)
装置本体に対して引き出し可能な、シート状部材を搬送
する搬送ユニットを備えた画像形成装置において、 該搬送路を２以上備えた搬送ユニットと。 該搬送ユニットに設けられ、２以上の搬送路のシート状
部材を骸ユニツ）Ｋ対して不動に拘束可能な拘束手段 とを有し、シート状部材を蚊搬送ユニットに対して不動
に拘束して該シート状部材を搬送ユニットと共に引き出
すことを特徴とする画像形成装置。[Scope of Claims] An image forming apparatus comprising: a conveyance path for guiding the conveyance of a sheet-like member; A transport unit equipped with two or more. A restraining means provided on the transport unit and capable of immovably restraining the sheet-like members of two or more transport paths with respect to the mosquito transport unit, and restraining the sheet-like members immovably with respect to the mosquito transport unit. An image forming apparatus characterized in that the sheet-like member is pulled out together with a conveyance unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5938082A JPS58174965A (en) | 1982-04-08 | 1982-04-08 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5938082A JPS58174965A (en) | 1982-04-08 | 1982-04-08 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58174965A true JPS58174965A (en) | 1983-10-14 |
Family
ID=13111612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5938082A Pending JPS58174965A (en) | 1982-04-08 | 1982-04-08 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58174965A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1331522A2 (en) * | 2002-01-24 | 2003-07-30 | Ricoh Company, Ltd. | Recording medium conveying device and image forming apparatus including the same |
| EP1386870A1 (en) * | 2002-07-31 | 2004-02-04 | Canon Kabushiki Kaisha | Sheet conveying apparatus, sheet post-processing apparatus, and image forming apparatus provided with sheet conveying apparatus and post-processing apparatus |
-
1982
- 1982-04-08 JP JP5938082A patent/JPS58174965A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1331522A2 (en) * | 2002-01-24 | 2003-07-30 | Ricoh Company, Ltd. | Recording medium conveying device and image forming apparatus including the same |
| EP1331522A3 (en) * | 2002-01-24 | 2003-10-15 | Ricoh Company, Ltd. | Recording medium conveying device and image forming apparatus including the same |
| US6955349B2 (en) | 2002-01-24 | 2005-10-18 | Ricoh Company, Ltd. | Recording medium conveying device and image forming apparatus including the same |
| EP1386870A1 (en) * | 2002-07-31 | 2004-02-04 | Canon Kabushiki Kaisha | Sheet conveying apparatus, sheet post-processing apparatus, and image forming apparatus provided with sheet conveying apparatus and post-processing apparatus |
| US6988730B2 (en) | 2002-07-31 | 2006-01-24 | Canon Kabushiki Kaisha | Sheet conveying apparatus, sheet post-processing apparatus, and image forming apparatus provided with sheet conveying apparatus and image forming apparatus |
| US7192029B2 (en) | 2002-07-31 | 2007-03-20 | Canon Kabushiki Kaisha | Sheet conveying apparatus, sheet post-processing apparatus, and image forming apparatus provided with sheet conveying apparatus and image forming apparatus |
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