JPH0321076U - - Google Patents
Info
- Publication number
- JPH0321076U JPH0321076U JP8184689U JP8184689U JPH0321076U JP H0321076 U JPH0321076 U JP H0321076U JP 8184689 U JP8184689 U JP 8184689U JP 8184689 U JP8184689 U JP 8184689U JP H0321076 U JPH0321076 U JP H0321076U
- Authority
- JP
- Japan
- Prior art keywords
- transfer
- paper
- roller
- guide
- switching means
- 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
Landscapes
- Counters In Electrophotography And Two-Sided Copying (AREA)
- Paper Feeding For Electrophotography (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
- Conveyance By Endless Belt Conveyors (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Description
第１図はこの考案の実施例を示す断面図、第２
図、第３図は各々上記実施例の動作を示す説明図
である。
１……転写ベルト、５……第１の感光体ドラム
、６……第２の感光体ドラム、８……案内位置切
換手段、１０……入口ガイド、１１，１９……ソ
レノイド、１２……定着ローラ、１３，１４……
排紙ローラ、１６……転写紙案内手段、１８……
ガイド爪、２２……帯電器、２３……反転搬送ロ
ーラ、２４……転写用紙、３３，３４，３５……
検知センサ。
Figure 1 is a sectional view showing an embodiment of this invention, Figure 2 is a sectional view showing an embodiment of this invention.
3 are explanatory diagrams showing the operation of the above embodiment, respectively. DESCRIPTION OF SYMBOLS 1... Transfer belt, 5... First photosensitive drum, 6... Second photosensitive drum, 8... Guide position switching means, 10... Entrance guide, 11, 19... Solenoid, 12... Fixing roller, 13, 14...
Paper discharge roller, 16...Transfer paper guide means, 18...
Guide claw, 22... Charger, 23... Reversing conveyance roller, 24... Transfer paper, 33, 34, 35...
Detection sensor.
Claims (1)
ラ間に巻回されて転写紙を静電的に吸着して転写
部に搬送し、感光体上のトナー像を転写後転写紙
を定着ローラに送る転写ベルトと、定着ローラで
定着された転写紙を排紙トレイに送る排紙ローラ
と、定着後の転写紙を反転させる反転搬送手段と
を有する両面画像形成装置において、 排紙ローラの下流側に設けられ、先端部が排紙
トレイ側と転写ベルトの転写面と対向する面側と
に回動可能に支持された転写紙案内手段と、転写
紙案内手段により転写ベルトの転写面と対向する
面側に逆送された定着後の転写紙を転写ベルト表
面に吸着させる静電帯電手段と、転写ベルトの転
写紙入口側に設けられ先端部が上記転写紙案内手
段で転写紙を逆送したときに転写ベルトの転写面
側から対向する面側に回動される案内位置切換手
段と、案内位置切換手段の上流側に設けられ案内
切換手段の回動動作に同期して正逆転する反転搬
送ローラとからなる反転搬送手段を備えたことを
特徴とする両面画像形成装置。[Claims for Utility Model Registration] Wrapped between at least two fixed rollers and a tension roller, the transfer paper is electrostatically attracted and conveyed to the transfer unit, and the toner image on the photoreceptor is transferred after transfer. In a double-sided image forming apparatus that includes a transfer belt that transports paper to a fixing roller, a paper discharge roller that transports the transfer paper fixed by the fixing roller to a paper discharge tray, and a reversing conveyance unit that reverses the transfer paper after fixing, A transfer paper guide means is provided on the downstream side of the paper roller, and the leading end is rotatably supported on the paper ejection tray side and on the side facing the transfer surface of the transfer belt. An electrostatic charging means is provided on the transfer belt surface to attract the fixed transfer paper that has been fed backwards to the side facing the transfer surface, and the leading edge of the transfer paper is transferred by the transfer paper guide means provided on the transfer paper entrance side of the transfer belt. A guide position switching means that rotates from the transfer surface side of the transfer belt to the opposite surface when the paper is reversely fed, and a guide position switching means provided upstream of the guide position switching means and synchronized with the rotational movement of the guide switching means. A double-sided image forming apparatus characterized by comprising a reversing conveyance means consisting of a reversing conveyance roller that rotates in forward and backward directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8184689U JPH0321076U (en) | 1989-07-11 | 1989-07-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8184689U JPH0321076U (en) | 1989-07-11 | 1989-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0321076U true JPH0321076U (en) | 1991-03-01 |
Family
ID=31628142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8184689U Pending JPH0321076U (en) | 1989-07-11 | 1989-07-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0321076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012101421A (en) * | 2010-11-09 | 2012-05-31 | Ricoh Co Ltd | Image forming device |
-
1989
- 1989-07-11 JP JP8184689U patent/JPH0321076U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012101421A (en) * | 2010-11-09 | 2012-05-31 | Ricoh Co Ltd | Image forming device |
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