JPH0261658A - Both-surface recorder - Google Patents
Both-surface recorderInfo
- Publication number
- JPH0261658A JPH0261658A JP21223788A JP21223788A JPH0261658A JP H0261658 A JPH0261658 A JP H0261658A JP 21223788 A JP21223788 A JP 21223788A JP 21223788 A JP21223788 A JP 21223788A JP H0261658 A JPH0261658 A JP H0261658A
- Authority
- JP
- Japan
- Prior art keywords
- recording paper
- paper
- conveyance
- conveyance path
- copy
- 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
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000003854 Surface Print Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Counters In Electrophotography And Two-Sided Copying (AREA)
- Conveyance By Endless Belt Conveyors (AREA)
- Registering Or Overturning Sheets (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野〕
本発明は１枚の記録紙の両面に印刷を行う両面記録装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a double-sided recording device that prints on both sides of a sheet of recording paper.
［従来の技術］
従来技術において１枚のコピー紙の両面に画像を形成さ
せる、いわゆる両面複写を行うものがある。この場合コ
ピー紙は複写処理部へ送られ、その一方の面に複写した
のち、表裏反転されてもう一度複写処理部へ送られる。[Prior Art] Some conventional technologies perform so-called double-sided copying, in which images are formed on both sides of a sheet of copy paper. In this case, the copy paper is sent to the copy processing section, and after copying on one side, the paper is turned over and sent to the copy processing section again.
そのためのコピー紙の給送装置の一つとして、まだ複写
が行われていない新しいコピー紙を積層貯容するコピー
紙貯容部と、前記コピー紙貯容部のコピー紙を一枚づつ
複写処理部へ給送する第１の給送装置と、前記複写処理
部へ給送されてそれの一方の面に複写像を形成されたコ
ピー紙を一方の側から表裏反転状態にて取り入れこれを
貯容する中間トレイと、前記中間トレイの前記一方の側
からこれに貯容されている前記コピー紙を前記複写処理
部へ一枚づつ給送する第２の給送装置とを備えたものが
ある。この装置において中間トレイに入ったコピー紙が
再び複写処理部へ送られる際、中間トレイに入った方向
とは逆の方向に引き出されるため、すなわちここでスイ
ッチバックされるため、コピー紙貯容部から複写処理部
へ送られるときとは紙面の上下、即ち天地が逆になり、
表裏の天地が揃った両面複写物を得ることができない。One of the copy paper feeding devices for this purpose includes a copy paper storage section that stacks and stores new copy paper that has not yet been copied, and a copy paper storage section that feeds the copy paper from the copy paper storage section one sheet at a time to a copy processing section. a first feeding device that feeds the paper, and an intermediate tray that takes in the copy paper fed to the copy processing section and has a copy image formed on one side of the copy paper from one side with the front and back reversed, and stores it. and a second feeding device that feeds the copy sheets stored in the intermediate tray one by one from the one side of the intermediate tray to the copy processing section. In this device, when the copy paper that has entered the intermediate tray is sent to the copy processing section again, it is pulled out in the opposite direction from the direction in which it entered the intermediate tray, that is, it is switched back, so it is removed from the copy paper storage section. When the paper is sent to the copy processing section, the top and bottom of the page, that is, the top and bottom, are reversed.
It is not possible to obtain a double-sided copy with the front and back sides aligned.
この不具合を改良するものとして、例えば特公昭６０−
４４６５６号公報には、上記コピー紙の給送装置におけ
る中間トレイを、このトレイに貯容されているコピー紙
の面を回動面として、実質的に１８０度づつ分割回転す
るように構成されたものが示されている。To improve this problem, for example,
Japanese Patent No. 44656 discloses a device in which the intermediate tray in the above-mentioned copy paper feeding device is configured to rotate substantially in 180-degree increments with the surface of the copy paper stored in the tray as the rotation surface. It is shown.
［解決しようとする課題］
上記の前者の従来技術では、反転装置にて表裏反転され
た記録紙を一旦中間トレイに取込んでから再び給送する
ので、記録紙の搬送に時間がかかる。また中間トレイを
分割回転させる後者の従来技術では、コピー紙の給送経
路が複雑となり、紙づまりなどの原因となりやすい。ま
た中間トレイを分割回転させる装置を収納するスペース
が必要となるため小型化に支障をきたし、部品点数が多
く構成も複雑なためコスト高となる。いずれのものも両
面印字速度が低下する問題がある。[Problem to be Solved] In the former prior art described above, since the recording paper that has been reversed by the reversing device is once taken into the intermediate tray and then fed again, it takes time to convey the recording paper. Furthermore, in the latter conventional technique in which the intermediate tray is divided and rotated, the copy paper feeding path becomes complicated, which is likely to cause paper jams and the like. In addition, a space is required to accommodate a device that divides and rotates the intermediate tray, which hinders miniaturization, and increases costs because the number of parts is large and the configuration is complex. Both methods have a problem in that the double-sided printing speed decreases.
そこで本発明の第１の目的は、表裏反転の間も記録紙の
搬送を停止せず、両面印字速度を向上することにある。Therefore, a first object of the present invention is to improve the double-sided printing speed without stopping the conveyance of the recording paper even during the reversal of the front and back sides.
さらに第２の目的は、表裏において天地が揃い、しかも
部品点数を削減して製造コストを低減するとともに薄型
化、小型化を達成することにある。A second objective is to make the front and back sides aligned, reduce the number of parts, reduce manufacturing costs, and achieve thinner and smaller sizes.
［課題を解決するための手段］
上記目的を達成するために、本発明の両面記録装置にお
いては、印字形成位置において一方の面に印字された記
録紙を再び印字形成位置に搬送するループ状の搬送路と
、この搬送路の途中に設けてある記録紙反転装置とを具
備している。そしてこの記録紙反転装置は、搬送路から
送り込まれた記録紙をその搬送方向に対して斜め前方に
送り出す搬送ローラと、搬送ローラによって送り出され
る記録紙をねじり状態で反転ガイドする湾曲ガイドと、
湾曲ガイドを経た記録紙を再び搬送路の搬送方向に修正
して搬送路に送り出す搬送ローラとを有しているもので
ある。[Means for Solving the Problems] In order to achieve the above object, the double-sided recording device of the present invention uses a loop-shaped recording paper that has been printed on one side at the print formation position and conveys it again to the print formation position. It includes a conveyance path and a recording paper reversing device provided in the middle of this conveyance path. The recording paper reversing device includes a transport roller that sends out the recording paper fed from the transport path diagonally forward with respect to the transport direction, and a curved guide that twists and guides the recording paper sent out by the transport roller in a reverse direction.
It has a conveyance roller that corrects the recording paper that has passed through the curved guide again in the conveyance direction of the conveyance path and sends it out to the conveyance path.
［作用コ
このような構成における記録紙反転装置では、記録紙の
搬送が停止されることなくねじり状態で反転され、この
ため印字速度が低下することなく、また天地が逆になる
こともなく円滑に反転して搬送される。[Function] In the recording paper reversing device with such a configuration, the recording paper is twisted and reversed without stopping the conveyance of the recording paper, so that the printing speed is not decreased and the printing paper is not turned upside down, so the recording paper can be smoothly reversed. It is then transported upside down.
［実施例］
以下、図面に基いて本発明の一実施例について説明する
。[Example] Hereinafter, an example of the present invention will be described based on the drawings.
第１図は本発明の両面記録装置の概略構成図である。印
字形成位置１には感光体ドラム１１と転写手段口とが設
けてある。感光体ドラム１１および転写手段口はデータ
バッファ（図示せず）に記憶されたデータを中央処理装
置（図示せず）から送られてくるアドレス信号にしたが
って記録紙に記録するもので、感光体ドラム１１と転写
手段１２との間を通過する記録紙２に感光体ドラム１１
上のトナー像が転写される。FIG. 1 is a schematic diagram of a double-sided recording apparatus according to the present invention. The print forming position 1 is provided with a photosensitive drum 11 and a transfer means opening. The photosensitive drum 11 and the transfer means record data stored in a data buffer (not shown) onto recording paper according to an address signal sent from a central processing unit (not shown). 11 and the transfer means 12.
The upper toner image is transferred.
未印字の記録紙２は記録紙トレイ３内に積層状態でスト
ックされており、最上位の記録紙は給紙ローラ４によっ
て１枚づつ送り出される。送り出された記録紙２は、搬
送ローラ５１・・・を含むループ状の搬送路５の一部を
通過して印字形成位置１まで搬送される。印字形成位置
１へ至る手前には図示しないシャッタが配設してあり、
記録紙２の先端を検知し、この検知信号に従って感光体
ドラム１１が回転し、記録紙２は印字形成位置１に送り
込まれ、転写手段１２により感光体ドラム１１上の現像
が記録紙２上に転写される。印字形成位置１を出た位置
に定着装置６が設けてある。定着装置６では熱定着また
は圧力定着等によって記録紙２に転写されたトナー像が
定着される。Unprinted recording papers 2 are stocked in a stacked state in a recording paper tray 3, and the uppermost recording paper is sent out one by one by a paper feed roller 4. The fed recording paper 2 passes through a portion of a loop-shaped conveyance path 5 including conveyance rollers 51 . . . and is conveyed to the print forming position 1 . A shutter (not shown) is provided in front of the print forming position 1.
The leading edge of the recording paper 2 is detected, the photoconductor drum 11 rotates according to this detection signal, the recording paper 2 is sent to the print forming position 1, and the developing image on the photoconductor drum 11 is transferred onto the recording paper 2 by the transfer means 12. transcribed. A fixing device 6 is provided at a position outside the print forming position 1. The fixing device 6 fixes the toner image transferred to the recording paper 2 by heat fixing, pressure fixing, or the like.
定着装置６を出てその一方の面Ａに印字が形成された記
録紙は、送行切換レバー７の姿勢に従って搬送される。After leaving the fixing device 6, the recording paper with prints formed on one side A is conveyed according to the attitude of the feed switching lever 7.
すなわち一方の面Ａに印字が為され、引続いて他方の面
Ｂに印字が為される場合には、信号により第１図実線図
示の位置にレバー７が位置しているので、記録紙２はル
ープ状の搬送路５に送り込まれ、ついで記録紙反転装置
８に送り込まれる。That is, when printing is performed on one side A and subsequently on the other side B, the lever 7 is positioned at the position shown by the solid line in FIG. is sent into a loop-shaped conveyance path 5, and then into a recording paper reversing device 8.
記録紙反転装置８は、第２図に示されるように、記録紙
２をねじり状態で反転せしめて搬送するもので、搬送路
５の一方の壁に連続する下板８１ａと、この下板と所定
の間隔で平行をなしている上板８１ｂと、下板と上板と
を連続する湾曲ガイド８１ｃとによって、断面がほぼＵ
字状をなしている。下板８１ａには、記録紙２が搬送路
５から送り込まれる入口８ａの近傍に、搬送路５の搬送
方向に対して斜め前方に記録紙２を送り出し可能に、傾
斜状態に搬送ローラ８２が配設しである。湾曲ガイド８
１ｃは、この斜め前方に前進する記録紙２をねじり状態
で表裏反転せしめてガイドするようにその形状が設定さ
れている。上板８１ｂには、記録紙２を再び搬送路５へ
送り出す出口８ｂの近傍に、上記の斜め前方に前進する
記録紙２を再び搬送路５の搬送方向に修正して送り出し
可能に、傾斜状態に搬送ローラ８３が配設しである。８
４は搬送ローラ８２，８３を支持するアームであり、８
５は記録紙２の側辺をガイドするガイド板である。As shown in FIG. 2, the recording paper reversing device 8 is for conveying the recording paper 2 by inverting it in a twisted state. The cross section is approximately U due to the upper plate 81b that is parallel to each other at a predetermined interval and the curved guide 81c that connects the lower plate and the upper plate.
It is shaped like a letter. On the lower plate 81a, near the entrance 8a through which the recording paper 2 is fed from the conveyance path 5, a conveyance roller 82 is arranged in an inclined state so as to be able to feed out the recording paper 2 diagonally forward with respect to the conveyance direction of the conveyance path 5. It is set up. Curved guide 8
The shape of the recording paper 1c is set so as to guide the recording paper 2, which advances diagonally forward, by turning it upside down in a twisted state. The upper plate 81b has an inclined state near the outlet 8b from which the recording paper 2 is sent out again to the transport path 5, so that the recording paper 2, which is advancing diagonally forward, can be corrected and sent out again in the transport direction of the transport path 5. A conveyance roller 83 is disposed at the. 8
4 is an arm that supports the conveyance rollers 82 and 83;
Reference numeral 5 denotes a guide plate that guides the sides of the recording paper 2.
次に記録紙の反転動作について説明する。Next, the reversing operation of the recording paper will be explained.
記録紙トレイ３から送り出された記録紙２は、印字形成
位置１においてその一方の面Ａに印字が形成され、この
印字が定着装置６で定着されると、走行切換えレバー７
の姿勢に従って搬送される。The recording paper 2 sent out from the recording paper tray 3 has a print formed on one side A at the print formation position 1, and when this print is fixed by the fixing device 6, the travel switching lever 7
The object is transported according to its orientation.
すなわち一方の面Ａに印字がなされ、引き続いて他方の
面Ｂに印字が為される場合には、信号により第１図実線
図示の位置に走行切換えレバー７が位置しているので、
記録紙２はループ状の搬送路５に送り込まれ、ついで記
録紙反転装置８に送り込まれる。That is, when printing is performed on one side A and subsequently on the other side B, the travel switching lever 7 is positioned at the position shown by the solid line in FIG.
The recording paper 2 is fed into a loop-shaped conveyance path 5, and then fed into a recording paper reversing device 8.
第２図示のように記録紙反転装置８の入口８ａに面Ａに
印字された記録紙２ａが到着したときには、面Ａが下面
に位置し、これから印字される面Ｂが上面になっている
。記録紙２ａが記録紙反転装置８内に入ると、入口近傍
の下板８１ａに斜めに配設されている搬送ローラ８２，
８２の間を通過することにより、記録紙２ａは搬送路５
の搬送方向に対して右斜め前方に送り出される。ついで
半円弧状の湾曲ガイド８１ｃに沿って案内されることに
より、ねじり状態で表裏反転して記録紙２ｂとなる。こ
の記録紙２ｂは上板８１ｂに面Ａが対接して上面となっ
ており、面Ｂは下面となっている。ここで出口８ｂ側の
近傍の上板８１ｂに斜めに配設されている搬送ローラ８
３，８３の間を通過することにより、斜め前方に送られ
ている記録紙２ｂは再び搬送路５における搬送方向に修
正されて前方へ送られ、記録紙の自重によって面Ｂが下
板８１ａに対接する状態の記録紙２ｃとなって出口８ｂ
から送り出される。入口８ａから出口８ｂへ至る間、記
録紙は搬送が停止されることなく、連続的にねじり状態
で反転して送り出される。As shown in the second figure, when the recording paper 2a with printing on side A arrives at the entrance 8a of the recording paper reversing device 8, side A is located on the bottom surface, and side B on which printing will be performed is on the top surface. When the recording paper 2a enters the recording paper reversing device 8, a conveyance roller 82, which is disposed diagonally on the lower plate 81a near the entrance,
By passing between 82, the recording paper 2a is transferred to the conveyance path 5.
It is sent diagonally forward to the right with respect to the conveyance direction. Then, by being guided along the semicircular arc-shaped curved guide 81c, the recording paper 2b is turned over in a twisted state to become the recording paper 2b. The surface A of this recording paper 2b is in contact with the upper plate 81b, forming the upper surface, and the surface B is the lower surface. Here, the conveyance roller 8 is disposed diagonally on the upper plate 81b near the exit 8b side.
By passing between 3 and 83, the recording paper 2b that has been sent diagonally forward is again corrected in the transport direction in the transport path 5 and sent forward, and due to the weight of the recording paper, the surface B is brought into contact with the lower plate 81a. The recording paper 2c is in contact with the exit 8b.
sent from. From the inlet 8a to the outlet 8b, the recording paper is continuously twisted and sent out without being stopped.
出口８ｂから送り出された記録紙は、第１図示の搬送ロ
ーラ５１・・・によって搬送路５中を再び印字形成位置
１へ搬送され、今度は面Ｂに印字が為される。そこで定
着装置６で定着されたＡ、Ｂ両面に印字済みの記録紙は
、鎖線位置に切換えられている走行切換えレバー７およ
び実線位置に切換えられている走行切換えレバー９に従
って排紙トレイ１０ａまたは１０ｂに排出される。なお
排出トレイ１０ａに排出されたときは面Ａを下にして排
出され、排紙トレイ１０ｂに排出卒れたときは面Ｂを下
にして排出される。The recording paper sent out from the outlet 8b is conveyed again through the conveyance path 5 to the print forming position 1 by the conveyance rollers 51 shown in the first diagram, and this time, printing is performed on the surface B. Then, the recording paper with prints on both sides of A and B fixed by the fixing device 6 is transferred to the paper output tray 10a or 10b according to the travel switching lever 7, which is switched to the chain line position, and the travel switching lever 9, which is switched to the solid line position. is discharged. Note that when the paper is ejected to the ejection tray 10a, it is ejected with the surface A facing down, and when it is ejected to the ejection tray 10b, it is ejected with the surface B facing down.
なお片方の面（面Ａ）にのみ印字される場合には、定着
装置６で定着された面Ａのみに印字済みの記録紙は、鎖
線位置にそれぞれ切換えられている走行切換えレバー７
を通過し、レバー９に従って、排紙トレイ１０ａまたは
１０ｂに排出される。If printing is to be performed on only one side (side A), the recording paper that has been fixed on only side A by the fixing device 6 should be moved to the position shown by the chain line with the travel switching lever 7.
and is discharged to the paper discharge tray 10a or 10b according to the lever 9.
そして排紙トレイ１０ａに排出されるときは面Ａを上に
して排出され、排紙トレイ１０ｂに排出されるときは面
Ａを下にして排出される。When the paper is ejected to the paper ejection tray 10a, the paper is ejected with the side A facing upward, and when it is ejected to the paper ejection tray 10b, the paper is ejected with the surface A facing down.
［効果］
以上に述べたように本発明によれば、記録紙反転装置に
よって記録紙が斜め前方へ送られながらねじり状態で表
裏反転し、その間に停止することがないので、両面印字
速度が格段に向上する。さらに表面の天の位置がそのま
まの状態て前進しながら反転して裏面に印字されること
になるので、表裏において天地が揃った印字ができる。[Effects] As described above, according to the present invention, the recording paper is fed diagonally forward by the recording paper reversing device and is turned upside down in a twisted state without stopping during that time, so the double-sided printing speed is significantly increased. improve. Furthermore, since the top position of the front side is kept as it is and the paper moves forward, it is reversed and printed on the back side, so that the top and bottom of the front and back sides can be printed evenly.
また構成が簡単であり、部品点数が少なくてすむので、
製造コストを低減できるとともに薄型化、小型化を達成
できる。In addition, the configuration is simple and the number of parts is small, so
It is possible to reduce manufacturing costs and achieve thinner and smaller size.
図面は本発明の一実施例を示すもので、第１図は概略構
成図、第２図は要部の拡大斜視図であって記録紙の反転
動作を共に説明する図面である。
１・ ・印字形成位置、
２．２ａ、２ｂ、２ｃ ・・・記録紙、５・ ・搬送路
、
８・ ・記録紙反転装置、
８１Ｃ・ ・湾曲ガイド、
８２．８３・ ・搬送ローラ、
Ａ、Ｂ・・・記録紙の面。
以 上The drawings show one embodiment of the present invention, and FIG. 1 is a schematic configuration diagram, and FIG. 2 is an enlarged perspective view of the main parts, both of which explain the reversing operation of the recording paper. 1. Print formation position, 2.2a, 2b, 2c... Recording paper, 5. - Conveyance path, 8. - Recording paper reversing device, 81C... Curved guide, 82.83... Conveyance roller, A. B: Side of recording paper. that's all
Claims (1)
び上記印字形成位置に搬送するループ状の搬送路と、上
記搬送路の途中に設けてある記録紙反転装置とを具備し
、 上記記録紙反転装置は、上記搬送路から送り込まれた記
録紙をその搬送方向に対して斜め前方に送り出す搬送ロ
ーラと、上記搬送ローラによって送り出される上記記録
紙をねじり状態で反転ガイドする湾曲ガイドと、上記湾
曲ガイドを経た上記記録紙を再び上記搬送路の搬送方向
に修正して上記搬送路に送り出す搬送ローラとを有して
いることを特徴とする両面記録装置。[Scope of Claims] A loop-shaped conveyance path for conveying the recording paper printed on one side at the print formation position again to the print formation position, and a recording paper reversing device provided in the middle of the conveyance path. The recording paper reversing device includes a transport roller that sends out the recording paper sent from the transport path diagonally forward with respect to the transport direction, and a reversal guide of the recording paper sent out by the transport roller in a twisted state. A double-sided recording apparatus comprising: a curved guide; and a conveyance roller that corrects the recording paper that has passed through the curved guide again in the conveyance direction of the conveyance path and sends it out to the conveyance path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21223788A JPH0261658A (en) | 1988-08-26 | 1988-08-26 | Both-surface recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21223788A JPH0261658A (en) | 1988-08-26 | 1988-08-26 | Both-surface recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0261658A true JPH0261658A (en) | 1990-03-01 |
Family
ID=16619237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21223788A Pending JPH0261658A (en) | 1988-08-26 | 1988-08-26 | Both-surface recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0261658A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007238308A (en) * | 2006-03-10 | 2007-09-20 | Duplo Seiko Corp | Paper reversing and carrying mechanism and paper reversing and carrying device |
| WO2008035479A1 (en) * | 2006-09-20 | 2008-03-27 | Duplo Seiko Corporation | Double-side image forming device |
| JP2012154958A (en) * | 2011-01-21 | 2012-08-16 | Konica Minolta Business Technologies Inc | Image forming device |
| JP2012246081A (en) * | 2011-05-25 | 2012-12-13 | Fuji Xerox Co Ltd | Image forming system and program |
| CN116252516A (en) * | 2023-05-16 | 2023-06-13 | 常州市旭日包装有限公司 | Double-sided transmission printing production line for carton production |
-
1988
- 1988-08-26 JP JP21223788A patent/JPH0261658A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007238308A (en) * | 2006-03-10 | 2007-09-20 | Duplo Seiko Corp | Paper reversing and carrying mechanism and paper reversing and carrying device |
| JP4644149B2 (en) * | 2006-03-10 | 2011-03-02 | デュプロ精工株式会社 | Paper reversing and conveying mechanism and paper reversing and conveying apparatus |
| US8109510B2 (en) | 2006-03-10 | 2012-02-07 | Duplo Seiko Corporation | Sheet inverting and conveying mechanism and sheet inverting and conveying apparatus |
| WO2008035479A1 (en) * | 2006-09-20 | 2008-03-27 | Duplo Seiko Corporation | Double-side image forming device |
| JP2008074532A (en) * | 2006-09-20 | 2008-04-03 | Duplo Seiko Corp | Double-sided image forming apparatus |
| GB2455923A (en) * | 2006-09-20 | 2009-07-01 | Duplo Seiko Corp | Double-side image forming device |
| GB2455923B (en) * | 2006-09-20 | 2011-03-16 | Duplo Seiko Corp | Double-side image forming device |
| US7918449B2 (en) | 2006-09-20 | 2011-04-05 | Duplo Seiko Corporation | Double-sided image forming device |
| JP2012154958A (en) * | 2011-01-21 | 2012-08-16 | Konica Minolta Business Technologies Inc | Image forming device |
| JP2012246081A (en) * | 2011-05-25 | 2012-12-13 | Fuji Xerox Co Ltd | Image forming system and program |
| CN116252516A (en) * | 2023-05-16 | 2023-06-13 | 常州市旭日包装有限公司 | Double-sided transmission printing production line for carton production |
| CN116252516B (en) * | 2023-05-16 | 2023-08-08 | 常州市旭日包装有限公司 | Double-sided transmission printing production line for carton production |
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