JP2779826B2 - Double-sided image forming device - Google Patents
Double-sided image forming deviceInfo
- Publication number
- JP2779826B2 JP2779826B2 JP1076754A JP7675489A JP2779826B2 JP 2779826 B2 JP2779826 B2 JP 2779826B2 JP 1076754 A JP1076754 A JP 1076754A JP 7675489 A JP7675489 A JP 7675489A JP 2779826 B2 JP2779826 B2 JP 2779826B2
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- forming apparatus
- paper
- recording paper
- double
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は両面画像形成装置において、両面プリント装
置内でジャム発生時、画像形成装置（本体）内の残留記
録紙の排紙等の処理に関するものである。Description: BACKGROUND OF THE INVENTION (Field of Industrial Application) The present invention relates to a process for discharging a residual recording sheet in an image forming apparatus (main body) when a jam occurs in a double-sided printing apparatus in a double-sided image forming apparatus. Things.
（従来の技術） レーザープリンタ，複写機等の画像形成装置は、大量
給紙装置，ソータ，両面プリント装置などの周辺装置を
付加し、高機能化がはかられている。(Prior Art) Image forming apparatuses such as laser printers and copiers are equipped with peripheral devices such as a large-volume paper feeder, a sorter, and a double-sided printing apparatus, and are being enhanced in function.
このような画像形成装置においては、動作時、多数の
記録紙が同時搬送されているので、一度、何れかの装置
でジャムが発生すると、多数のジャムを誘発し、復旧す
るためには大きな手間と時間を必要とする。In such an image forming apparatus, since a large number of recording papers are simultaneously conveyed during operation, once a jam occurs in any one of the apparatuses, a large number of jams are induced and a great deal of trouble is required to recover. And need time.
これを第４図に示すレーザープリンタの例についての
べる。図は画像形成装置（Ｉ）と両面プリント装置（I
I）とで両面画像形成装置を構成した場合を示す。This will be described with respect to the example of the laser printer shown in FIG. The figure shows the image forming apparatus (I) and the duplex printing apparatus (I
I) shows a case where a double-sided image forming apparatus is configured.
このプリンタの動作概要を説明すると、画像形成装置
（Ｉ）の給紙トレイ1A,1Bまたは大量給紙トレイ1Cの何
れからか給紙ローラ3A,3Bまたは3Cにより給送された記
録紙２は、レジストローラ対４によってタイミングをと
られて感光体の一例であるドラム状の感光体５（OPC）
へ搬送される。An outline of the operation of the printer will be described. The recording paper 2 fed by the paper feed rollers 3A, 3B or 3C from one of the paper feed trays 1A and 1B or the large-volume paper feed tray 1C of the image forming apparatus (I) A drum-shaped photoconductor 5 (OPC), which is an example of a photoconductor that is timed by the registration roller pair 4
Transported to
感光体５は時計方向に回転駆動され、その際、感光体
５上に電荷を帯電させる帯電チャージャー６によって表
面を帯電され、画像信号を光ビームに変調する光書き込
み装置である光学ユニット７からの光ビームを照射され
て感光体５上に静電潜像が形成される。The photoconductor 5 is driven to rotate clockwise. At this time, the surface of the photoconductor 5 is charged by a charging charger 6 for charging the photoconductor 5, and an optical unit 7 as an optical writing device that modulates an image signal into a light beam. An electrostatic latent image is formed on the photoreceptor 5 by being irradiated with the light beam.
この潜像は、トナー層を形成する現像ユニット８を通
る時トナーによって可視像化され、この可視像は感光体
５へ搬送された記録紙２に転写チャージャー９により転
写され、転写された記録紙上の可視像は定着装置10によ
って定着される。This latent image is visualized by toner when passing through a developing unit 8 for forming a toner layer, and the visible image is transferred to the recording paper 2 conveyed to the photoreceptor 5 by a transfer charger 9 and transferred. The visible image on the recording paper is fixed by the fixing device 10.
そして定着装置10を出た記録紙２は、排紙ローラ11及
び切換爪12により画像形成装置（Ｉ）側の排紙トレイ1
3,14,15の何れかへ排出されるか、または両面プリント
装置（II）側へ入口24を通して排出される。The recording paper 2 that has exited the fixing device 10 is discharged by a discharge roller 11 and a switching claw 12 to a discharge tray 1 on the image forming apparatus (I) side.
It is discharged to any one of 3, 14, and 15 or discharged through the inlet 24 to the double-sided printing apparatus (II) side.
即ち、片面プリントの場合は、電装部16（プリントシ
ーケンス制御を行うエンジンボード17,画像処理部を有
するコントローラボード18を有する）による制御で、上
記排紙トレイ13〜15に片面プリントされた記録紙が排出
される。That is, in the case of single-sided printing, under the control of the electrical unit 16 (having an engine board 17 for performing a print sequence control and a controller board 18 having an image processing unit), the recording paper printed on one side on the discharge trays 13 to 15 is controlled. Is discharged.
また両面プリントの場合は、電装部16の制御で切換爪
12が切り換わり、入口24を通して反転ローラ19の搬送経
路ａ側へ記録紙２が搬送される。そして、反転ローラ19
で搬送経路ａへ送られた記録紙２は、反転爪21の動作に
より搬送ローラ22A,22Bで形成される搬送経路ｂ側へ記
録紙２が、１枚ずつ搬送経路ａからスイッチバックして
搬送される。つまり、記録紙２の片面にプリントされた
側が反転され、プリントすべき他の片面が給紙ローラ23
によりレジストローラ対４へ給送される。In the case of double-sided printing, the switching claw is controlled by the control of the electrical unit 16.
12 is switched, and the recording paper 2 is conveyed to the conveying path a side of the reversing roller 19 through the entrance 24. And the reversing roller 19
The recording paper 2 sent to the conveyance path a by the operation of the reversing claw 21 switches the recording paper 2 one by one from the conveyance path a to the conveyance path b side formed by the conveyance rollers 22A and 22B and conveys the recording paper 2 one by one. Is done. That is, the side printed on one side of the recording paper 2 is reversed, and the other side to be printed is
To the registration roller pair 4.
上記において両面プリントを行なう時間変化状態を第
５図に示し、これは大量給紙トレイ1Cから給紙ローラ3C
で給紙された場合である。図から分るように各搬送経路
には複数枚の記録紙（３〜４枚）が同時搬送される。こ
の時のプリントページ順は、１（#1表）→３（（#2表）
→５（#3表）→２（#1裏）→７（#4表）→４（#2裏）→
…と続く。ここで、第５図（Ｇ）に示すように両面プリ
ント装置（II）の搬送経路ｂにある#3記録紙２がジャム
になると両面モータ20を停止してジャム状態となる。こ
のため本体（Ｉ）の搬送経路ｄにある#4記録紙を両面プ
リント装置（II）の入口24を通じて搬送経路ａへ給紙す
ることができない。したがって本体（Ｉ）側も直ちにメ
インモータ25を止め#4記録紙の搬送を停止せざるを得
ず、#4記録紙と搬送経路ｃの#2記録紙も#3記録紙のジャ
ムによる残留記録紙となる。FIG. 5 shows a time-varying state of performing the double-sided printing in the above description.
This is the case when paper is fed. As can be seen from the figure, a plurality of recording sheets (three to four) are simultaneously conveyed to each conveyance path. The print page order at this time is 1 (# 1 table) → 3 ((# 2 table)
→ 5 (# 3 front) → 2 (# 1 back) → 7 (# 4 front) → 4 (# 2 back) →
... and so on. Here, as shown in FIG. 5 (G), when the # 3 recording paper 2 in the conveyance path b of the duplex printing apparatus (II) is jammed, the duplex motor 20 is stopped and the jam occurs. For this reason, the # 4 recording paper in the transport path d of the main body (I) cannot be fed to the transport path a through the entrance 24 of the duplex printing apparatus (II). Therefore body (I) side forced to not give not immediately stop the conveyance of the set # 4 paper main motor 25, the residual recording with # 2 paper also # 3 paper jam # 4 paper and the conveyance path c It becomes paper.
また、#2記録紙は既に表面のプリントを完了している
が、残留記録紙としなければならないという不具合が生
じる。In addition, although printing on the front side of the # 2 recording paper has already been completed, there is a problem that the remaining recording paper must be used.
（発明が解決しようとする課題） 上述したように両面プリント装置（II）内の搬送経路
ｂにある#3記録紙がジャムとなった場合、画像形成装置
（本体）（Ｉ）内にある複数の#2,#4記録紙が残留記録
紙として取扱われ、既に表面がプリントされた#2記録紙
については無駄となり、またこれから裏面プリントする
#4記録紙についてはそのまま残り、これを排紙しない限
り前記#2記録紙の裏面についてプリントできないという
問題点があった。(Problems to be Solved by the Invention) As described above, when the # 3 recording paper in the conveyance path b in the double-sided printing apparatus (II) is jammed, a plurality of sheets in the image forming apparatus (main body) (I) The # 2 and # 4 recording papers are treated as residual recording papers, and the # 2 recording paper with the front side already printed will be wasted and will be printed on the back side.
There is a problem that the # 4 recording paper remains as it is and printing cannot be performed on the back surface of the # 2 recording paper unless the # 4 recording paper is discharged.
本発明は上述したジャム発生状態において、#4記録紙
を排紙し、#2記録紙の裏面へプリントを可能とすること
を目的とする。また、無駄となる記録紙を極力抑え、か
つジャム回復処理を早くすることを目的とする。It is an object of the present invention to discharge # 4 recording paper and enable printing on the back surface of # 2 recording paper in the above-described jam occurrence state. It is another object of the present invention to minimize wasteful recording paper and to speed up the jam recovery process.
（構成および作用） 本発明は上記目的を達成するため、請求項（１）記載
の発明は、画像形成装置により片面プリントされた記録
紙を反転し、反転した後に前記画像形成装置に再給紙す
る両面プリント装置を備えた両面画像形成装置におい
て、両面プリント装置の記録紙入口近傍に設けられて前
記画像形成装置の搬送経路に在る残留記録紙を排紙する
ことが可能な排紙手段と、前記記録紙入口直上に配設さ
れて、前記排紙手段方向と両面プリント装置への搬送経
路方向とのいずれかへ記録紙の搬送先を切り換える搬送
方向切換手段と、両面プリント装置内でジャムが発生し
たときに、前記画像形成装置の搬送経路の下流側に在る
記録紙を前記搬送方向切換手段を動作させることによっ
て前記排紙手段へ排紙し、しかも前記画像形成装置の搬
送経路の上流側に在る記録紙の未プリント面に対して画
像形成装置によりプリントして外部へ排紙させるように
制御する制御部とを備えたことを特徴とする。(Structure and operation) In order to achieve the above object, according to the present invention, a recording sheet printed on one side by an image forming apparatus is reversed, and after reversing, the sheet is re-fed to the image forming apparatus. A double-sided image forming apparatus provided with a double-sided printing apparatus, which is provided near a recording paper inlet of the double-sided printing apparatus and is capable of discharging remaining recording paper on a conveyance path of the image forming apparatus. Transport direction switching means disposed directly above the recording paper inlet for switching the destination of the recording paper to one of the direction of the paper discharge means and the direction of the transport path to the duplex printing apparatus; When recording paper is generated, the recording sheet located downstream of the conveying path of the image forming apparatus is discharged to the sheet discharging means by operating the conveying direction switching means, and the recording sheet is conveyed by the image forming apparatus. A control unit for controlling the image forming apparatus to print on the unprinted surface of the recording paper located upstream of the path and discharge the recording paper to the outside.
また、請求項（２）記載の発明は、画像形成装置によ
り片面プリントされた記録紙を反転し、反転した後に前
記画像形成装置に再給紙する両面プリント装置を備えた
両面画像形成装置において、両面プリント装置の記録紙
入口近傍に設けられて前記画像形成装置の搬送経路に在
る残留記録紙を排紙することが可能な排紙手段と、前記
記録紙入口に配設されて、両面プリント装置における反
転搬送経路の切り換えを行うと共に前記排紙手段方向へ
の記録紙の搬送先切り換えを行う反転切換手段と、両面
プリント装置内でジャムが発生したときに、前記画像形
成装置の搬送経路の下流側に在る記録紙を前記反転切換
手段を動作させることによって前記排紙手段へ排紙し、
しかも前記画像形成装置の搬送経路の上流側に在る記録
紙の未プリント面に対して画像形成装置によりプリント
して外部へ排紙させるように制御する制御部とを備えた
ことを特徴とする。According to a second aspect of the present invention, there is provided a double-sided image forming apparatus including a double-sided printing apparatus for reversing a recording sheet printed on one side by an image forming apparatus and re-feeding the recording sheet after reversing the recording sheet. Paper discharge means provided near the recording paper entrance of the two-sided printing apparatus and capable of discharging residual recording paper present on the conveyance path of the image forming apparatus; Reversing switching means for switching the reversing conveyance path in the apparatus and for switching the conveyance destination of the recording paper in the direction of the paper discharging means; and for reversing the conveyance path of the image forming apparatus when a jam occurs in the duplex printing apparatus. The recording paper located downstream is discharged to the paper discharging means by operating the reversing switching means,
And a control unit for controlling the image forming apparatus to print on the unprinted surface of the recording paper located upstream of the conveyance path of the image forming apparatus and discharge the paper to the outside. .
本発明は両面プリント装置（II）内の搬送経路ｂ、即
ち画像形成装置（本体）（Ｉ）への再給紙経路でジャム
が発生した場合、前記本体（Ｉ）内の#4記録紙を両面プ
リント装置の入口部分に設けた排紙口に排紙し、表面プ
リントされた#2記録紙の裏面プリントが可能となるよう
に本体（Ｉ）内の搬送経路を空けるようにしたものであ
る。According to the present invention, when a paper jam occurs in the conveyance path b in the duplex printing apparatus (II), that is, in the re-feeding path to the image forming apparatus (main body) (I), the # 4 recording paper in the main body (I) is removed. The paper is discharged to a paper discharge port provided at the entrance of the double-sided printing apparatus, and the transport path in the main body (I) is opened so that the back side of the # 2 recording paper having the front side printed can be printed. .
（実施例） 第１図は本発明の請求項（１）記載発明の一実施例を
示し、画像形成装置（本体）（Ｉ）と両面プリント装置
（II）の関係部分（第４図の左側部分）のみを示す。こ
れは、本体（Ｉ）内にある残留記録紙の排出モード状態
のときの、本体内に設けた切換爪27の位置を示す。(Embodiment) FIG. 1 shows an embodiment of the invention described in claim (1) of the present invention, and relates to an image forming apparatus (main body) (I) and a double-sided printing apparatus (II) (left side in FIG. 4). Part) is shown. This indicates the position of the switching claw 27 provided in the main body in the discharge mode of the residual recording paper in the main body (I).
即ち、図において、26は本体内の残留記録紙（第５図
（Ｇ）の例では#4記録紙）を排紙収納する収納カゴで、
両面プリント装置（II）の側面に配設され、収納カゴの
開口部26Aを切換爪27に近接させのぞませてある。ま
た、切換爪27は両面プリント装置（II）の入口24の直上
位置に配設され、収納カゴ26と搬送経路ａとへの通紙制
御が行なわれる。即ち、切換爪27が図示の位置にあると
きは、本体（Ｉ）内の残留記録紙は収納カゴ26に開口部
26Aを経て排出され、両面プリント装置（II）への入口
は塞がれている。そして、第５図（Ｇ）の例で#4記録紙
が排出された後、本体（Ｉ）のメインモータ25が起動さ
れて搬送経路ｃにある#2記録紙の裏面プリントが行なわ
れる。That is, in the figure, 26 is a storage basket for discharging and storing the residual recording paper (# 4 recording paper in the example of FIG. 5 (G)) in the main body.
It is arranged on the side of the double-sided printing apparatus (II), and the opening 26A of the storage basket is brought close to the switching claw 27 and viewed. The switching claw 27 is disposed immediately above the entrance 24 of the double-sided printing apparatus (II), and controls paper passing to the storage basket 26 and the transport path a. That is, when the switching claw 27 is at the position shown in the drawing, the remaining recording paper in the main body (I) has an opening in the storage basket 26.
It is discharged through 26A, and the entrance to the duplex printer (II) is blocked. Then, after the # 4 recording paper is discharged in the example of FIG. 5 (G), the main motor 25 of the main body (I) is started, and the back side printing of the # 2 recording paper in the transport path c is performed.
第２図は本発明の請求項（２）記載発明の一実施例を
示し、両面プリント装置（II）の搬送経路ａの側面に本
体内の残留記録紙を排紙する排出口28を設け、両面プリ
ント装置（II）の反転爪21を残留記録紙の排出と、反転
搬送路ｂへの記録紙の搬送制御を兼用せしめたものであ
る。29は矢印方向へ開閉可能な開閉扉で、排出口28から
排出された記録紙を容易に取出すことができる。FIG. 2 shows an embodiment of the invention according to claim 2 of the present invention, wherein a discharge port 28 for discharging the residual recording paper in the main body is provided on a side surface of the conveyance path a of the duplex printing apparatus (II). The reversing claw 21 of the double-sided printing apparatus (II) is used to control the discharge of the residual recording paper and the conveyance control of the recording paper to the reversing conveyance path b. Reference numeral 29 denotes an opening / closing door which can be opened and closed in the direction of the arrow, and the recording paper discharged from the discharge port 28 can be easily taken out.
第２図（１）は本体（Ｉ）から残留記録紙を排出口28
へ排出するため、反転爪21が図示の位置にあり、排出口
28側を開放し、搬送経路ａ側は閉成される。FIG. 2 (1) shows a discharge port 28 for the residual recording paper from the main body (I).
The claw 21 is located at the position shown in
28 side is opened, and the transport path a side is closed.
また第２図（２）は本体（Ｉ）から記録紙を、搬送経
路ａ側へ案内するため、反転爪21は図示の位置にある。In FIG. 2 (2), the reversing claw 21 is located as shown in FIG.
第３図は上記第１図，第２図の各実施例により本体
（Ｉ）内の残留記録紙を排出する説明図である。即ち両
面プリント装置（II）の搬送経路ｂにある#3記録紙がジ
ャム発生した状態（Ｇ）では、両面モータ20は停止し、
表面プリントされた#2記録紙は本体（Ｉ）の搬送経路ｃ
にあり、#4記録紙は本体（Ｉ）の搬送経路ｄにある。状
態（Ｈ）では、本体（Ｉ）のメインモータ25を起動し上
記搬送経路ｃにある#2記録紙を裏面プリントするため感
光体５に搬送する。また、#4記録紙は第１図の切換爪27
または第２図の反転爪21の通紙制御の動作位置により、
夫々収納カゴ26または排出口28へ排出される。状態
（Ｉ）では、本体（Ｉ）のメインモータ25を停止し、前
記#4記録紙が排出されている。この後、両面プリント装
置（II）の搬送経路ｂの#3記録紙のジャム除去がなされ
る。FIG. 3 is an explanatory view of discharging the residual recording paper in the main body (I) according to each embodiment of FIGS. 1 and 2. That is, in a state (G) in which the # 3 recording paper in the conveyance path b of the duplex printing apparatus (II) has a jam (G), the duplex motor 20 stops, and
The # 2 recording paper with the front side printed is the transport path c of the main unit (I).
And # 4 recording paper is on the transport path d of the main body (I). In the state (H), the main motor 25 of the main body (I) is started, and the # 2 recording paper in the transport path c is transported to the photoreceptor 5 for backside printing. The # 4 recording paper is the switching claw 27 in FIG.
Alternatively, depending on the operation position of the paper passing control of the reversing claw 21 in FIG.
It is discharged to the storage basket 26 or the discharge port 28, respectively. In the state (I), the main motor 25 of the main body (I) is stopped, and the # 4 recording paper is discharged. Thereafter, the jam of the # 3 recording paper in the transport path b of the double-sided printing apparatus (II) is removed.
（発明の効果） 以上説明したように本発明は、両面プリント装置内の
搬送経路において記録紙のジャムが発生した場合、本体
内にある記録紙は適宜排紙され、あるいはプリントする
ことができる位置まで搬送される。したがって従来のよ
うにジャムが発生したとき、同時搬送中の全ての記録紙
を残留紙とせず、一部の記録紙は両面プリントされ、未
プリントの記録紙は再利用可能なように排出され、経済
的である。(Effects of the Invention) As described above, according to the present invention, when a recording paper jam occurs in a conveyance path in a two-sided printing apparatus, the recording paper in the main body is appropriately discharged or printed at a position where printing can be performed. Transported to Therefore, when a jam occurs as in the prior art, all recording papers being simultaneously conveyed are not left as residual papers, some recording papers are printed on both sides, and unprinted recording papers are discharged so that they can be reused, It is economical.
しかも、両面プリント装置内のジャム紙を取除けば良
いので、回復処理が早くなるという利点がある。また、
第２図の実施例では、両面プリント装置の一部を記録排
出出口とし、反転爪を利用しているので、経済的であ
る。In addition, since it is only necessary to remove the jammed paper in the double-sided printing apparatus, there is an advantage that the recovery process is quickened. Also,
In the embodiment shown in FIG. 2, since a part of the double-sided printing apparatus is used as a recording discharge outlet and a reversing claw is used, it is economical.
第１図および第２図は本発明の請求項（１）および
（２）記載の各実施例図、第３図は前記各実施例の動作
を説明する状態図、第４図は本発明が実施されるレーザ
ープリンタの縦断面図、第５図は第４図の搬送経路を搬
送される複数枚の記録紙の時間変化を示す状態図であ
る。 （Ｉ）……画像形成装置（本体）、（II）……両面プリ
ント装置、1C……大量給紙トレイ、２……記録紙、3C…
…給紙ローラ、４……レジストローラ対、５……感光
体、12,27……切換爪、19……反転ローラ、20……両面
モータ、21……反転爪、23……給紙ローラ、24……入
口、25……メインモータ、26……収納カゴ、26A……開
口部、28……排出口、29……開閉扉。1 and 2 are diagrams of each embodiment according to claims (1) and (2) of the present invention, FIG. 3 is a state diagram for explaining the operation of each embodiment, and FIG. FIG. 5 is a longitudinal sectional view of a laser printer to be implemented, and FIG. 5 is a state diagram showing a time change of a plurality of recording sheets conveyed along the conveying path of FIG. (I): image forming apparatus (main body), (II): double-sided printing apparatus, 1C: large-volume paper feed tray, 2: recording paper, 3C:
… Paper feed roller, 4… registration roller pair, 5… photoconductor, 12, 27… switching claw, 19… reversing roller, 20… double-sided motor, 21… reversing claw, 23… paper feed roller , 24 ... inlet, 25 ... main motor, 26 ... storage basket, 26A ... opening, 28 ... outlet, 29 ... door.
Claims (2)
録紙を反転し、反転した後に前記画像形成装置に再給紙
する両面プリント装置を備えた両面画像形成装置におい
て、両面プリント装置の記録紙入口近傍に設けられて前
記画像形成装置の搬送経路に在る残留記録紙を排紙する
ことが可能な排紙手段と、前記記録紙入口直上に配設さ
れて、前記排紙手段方向と両面プリント装置への搬送経
路方向とのいずれかへ記録紙の搬送先を切り換える搬送
方向切換手段と、両面プリント装置内でジャムが発生し
たときに、前記画像形成装置の搬送経路の下流側に在る
記録紙を前記搬送方向切換手段を動作させることによっ
て前記排紙手段へ排紙し、しかも前記画像形成装置の搬
送経路の上流側に在る記録紙の未プリント面に対して画
像形成装置によりプリントして外部へ排紙させるように
制御する制御部とを備えたことを特徴とする両面画像形
成装置。1. A double-sided image forming apparatus provided with a double-sided printing apparatus for reversing a recording sheet printed on one side by an image forming apparatus and re-feeding the recording sheet after reversing the recording sheet. A paper discharging means provided in the vicinity of the image forming apparatus and capable of discharging the residual recording paper present on the conveyance path of the image forming apparatus; Transport direction switching means for switching the transport destination of the recording paper to one of the transport path directions to the apparatus, and a recording device located downstream of the transport path of the image forming apparatus when a jam occurs in the duplex printing apparatus. The paper is discharged to the paper discharging means by operating the transport direction switching means, and further, the paper is discharged by the image forming apparatus to the unprinted surface of the recording paper located on the upstream side of the transport path of the image forming apparatus. Lint and double-sided image forming apparatus characterized by comprising a control unit for controlling so as to discharge the paper to the outside.
録紙を反転し、反転した後に前記画像形成装置に再給紙
する両面プリント装置を備えた両面画像形成装置におい
て、両面プリント装置の記録紙入口近傍に設けられて前
記画像形成装置の搬送経路に在る残留記録紙を排紙する
ことが可能な排紙手段と、前記記録紙入口に配設され
て、両面プリント装置における反転搬送経路の切り換え
を行うと共に前記排紙手段方向への記録紙の搬送先切り
換えを行う反転切換手段と、両面プリント装置内でジャ
ムが発生したときに、前記画像形成装置の搬送経路の下
流側に在る記録紙を前記反転切換手段を動作させること
によって前記排紙手段へ排紙し、しかも前記画像形成装
置の搬送経路の上流側に在る記録紙の未プリント面に対
して画像形成装置によりプリントして外部へ排紙させる
ように制御する制御部とを備えたことを特徴とする両面
画像形成装置。2. A double-sided image forming apparatus provided with a double-sided printing apparatus for reversing a recording sheet printed on one side by an image forming apparatus and re-feeding the recording sheet after reversing the recording sheet. Paper discharge means provided in the vicinity and capable of discharging residual recording paper present on the conveyance path of the image forming apparatus; and switching of a reverse conveyance path in the double-sided printing apparatus provided at the recording paper entrance. Reversing switching means for switching the conveyance destination of the recording paper in the direction of the paper discharging means, and the recording paper located downstream of the conveyance path of the image forming apparatus when a jam occurs in the duplex printing apparatus. Is discharged to the paper discharging means by operating the reversing switching means, and the unprinted surface of the recording paper upstream of the conveyance path of the image forming apparatus is discharged to the image forming apparatus. Ri printed double-sided image forming apparatus characterized by comprising a control unit for controlling so as to discharge the paper to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1076754A JP2779826B2 (en) | 1989-03-30 | 1989-03-30 | Double-sided image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1076754A JP2779826B2 (en) | 1989-03-30 | 1989-03-30 | Double-sided image forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02257158A JPH02257158A (en) | 1990-10-17 |
| JP2779826B2 true JP2779826B2 (en) | 1998-07-23 |
Family
ID=13614378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1076754A Expired - Lifetime JP2779826B2 (en) | 1989-03-30 | 1989-03-30 | Double-sided image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2779826B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8355642B2 (en) | 2008-06-16 | 2013-01-15 | Ricoh Company, Ltd. | Image forming apparatus which continues to convey a sheet if the sheet is only slightly delayed |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07120984A (en) * | 1993-10-21 | 1995-05-12 | Fuji Xerox Co Ltd | Paper carrying device for image forming device |
| JP3282373B2 (en) * | 1994-05-16 | 2002-05-13 | 富士ゼロックス株式会社 | Jam processing equipment for image forming equipment |
| JP4946540B2 (en) * | 2007-03-14 | 2012-06-06 | コニカミノルタビジネステクノロジーズ株式会社 | Image forming apparatus |
| US8160462B2 (en) | 2007-08-07 | 2012-04-17 | Ricoh Company, Ltd. | Image forming apparatus having a transport status detection unit |
| JP5181657B2 (en) * | 2007-08-23 | 2013-04-10 | 株式会社リコー | Image forming apparatus |
| EP2229283B1 (en) * | 2007-12-27 | 2011-09-07 | Eastman Kodak Company | A printing apparatus and a method for controlling the transport of sheets through a printing apparatus |
| JP5186326B2 (en) * | 2008-09-30 | 2013-04-17 | 理想科学工業株式会社 | Printing device recovery mechanism and paper transport device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61155132A (en) * | 1984-12-27 | 1986-07-14 | Sharp Corp | Copying machine with auxiliary feed passage |
| JPH01172150A (en) * | 1987-12-25 | 1989-07-07 | Canon Inc | Image forming device |
-
1989
- 1989-03-30 JP JP1076754A patent/JP2779826B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8355642B2 (en) | 2008-06-16 | 2013-01-15 | Ricoh Company, Ltd. | Image forming apparatus which continues to convey a sheet if the sheet is only slightly delayed |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02257158A (en) | 1990-10-17 |
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