JPS638157A - After-separation conveyor - Google Patents
After-separation conveyorInfo
- Publication number
- JPS638157A JPS638157A JP61147797A JP14779786A JPS638157A JP S638157 A JPS638157 A JP S638157A JP 61147797 A JP61147797 A JP 61147797A JP 14779786 A JP14779786 A JP 14779786A JP S638157 A JPS638157 A JP S638157A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- kick
- image
- roller
- sheet material
- 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.)
- Granted
Links
- 238000000926 separation method Methods 0.000 title claims description 14
- 238000010586 diagram Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 1
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
- Paper Feeding For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は複写機やプリンタ等の画像形成装置に関するも
のであり、特に像担持体から分離されたシー1〜材を搬
送する分離後搬送手段に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an image forming apparatus such as a copying machine or a printer, and particularly to a post-separation conveying means for conveying sheets 1 to 10 separated from an image carrier. It is related to.
[従来の技術と問題点]
従来の装置図を第6図に示す。分離後搬送ローラ13と
搬送ベルト15との関係は両者間に搬送ガイド21を備
えており、転写後、分離されたシート材Pが搬送されて
、先端が定着ローラ20a、20bに噛込まれるとぎに
、シート材Pが搬送ガイド21と搬送ベルト15とに沿
っているため、定着ローラ20a、20bへの突入のシ
ョックが矢印のようにシート材Pの後端へと伝わり、転
写部でシート材Pが影響を受け、転写ズレが発生すると
、いう不具合があった。[Prior Art and Problems] A diagram of a conventional device is shown in FIG. The relationship between the post-separation conveyance roller 13 and the conveyance belt 15 is such that a conveyance guide 21 is provided between them, and after the transfer, the separated sheet material P is conveyed and the leading edge is bitten by the fixing rollers 20a and 20b. Since the sheet material P is along the conveyance guide 21 and the conveyance belt 15, the shock of the plunge into the fixing rollers 20a and 20b is transmitted to the rear end of the sheet material P as shown by the arrow, and the sheet material is There was a problem that P was affected and transfer misalignment occurred.
また、従来の分動後撤送ローラ13の断面形状は円型で
あったため、シート材Pの長さが定着ローラ20a、2
0bと像11持体ドラム12間より長い時には像担持体
ド、ラム12に押し出されるように定着ローラ20a、
20bまで送られるが、転写紙の長さが短いか又は腰の
強い紙では、定着人口ガイド19や定着ローラ20a、
20bにシート材先端が突当ると、シート材Pは分離後
搬送ローラ13上で滑ってしまい、定着ローラ20a、
20bに噛込まれないという欠点があった(第7図)。Furthermore, since the conventional post-separation and withdrawal roller 13 has a circular cross-sectional shape, the length of the sheet material P is longer than that of the fixing rollers 20a and 2.
When the distance between the image bearing drum 12 and the image 11 is longer than the distance between the image bearing drum 12 and the image bearing drum 12, the fixing roller 20a is pushed out by the image bearing drum 12.
However, if the length of the transfer paper is short or the paper is stiff, the fixing density guide 19, the fixing roller 20a,
When the leading edge of the sheet material hits 20b, the sheet material P slips on the conveying roller 13 after being separated, and the fixing roller 20a,
There was a drawback that it did not get caught in 20b (Fig. 7).
さらに名刺・カード・葉書等の厚手心サイズ紙において
は、シート材Pの後端か分1lI11後ローラ13に乗
ったままの状態でシート材Pの先端が定着ローラ20a
、2Ob間に噛込まれようとするときに、定着ローラ2
0a、20bのニップ部にうまく突入しないため、紙が
停止してしまう等の欠点かあった。Furthermore, in the case of thick core size paper such as business cards, cards, postcards, etc., when the rear end of the sheet material P remains on the rear roller 13, the leading edge of the sheet material P is placed on the fixing roller 20a.
, 2Ob, when the fixing roller 2
There were drawbacks such as the paper stopping because it did not enter the nip portions 0a and 20b properly.
[問題点を解決するための構成]
本発明は前述の問題点を解決すへく成されたものであり
、以下の構成を有する。即ち、転写部において像担持体
上の画像を転写された後、この像担持体から分離される
シート材を搬送する分離後搬送手段であって、上記分離
位置のシート材搬送方向下流側近傍に設けられており、
周面に蹴り出し部を有して無端状に穆動してシート材に
蹴り出し力を与える蹴り出し手段を有することを特徴と
する分離後搬送装置である。[Configuration for Solving Problems] The present invention has been accomplished to solve the above-mentioned problems, and has the following configuration. That is, the post-separation conveying means conveys the sheet material separated from the image bearing member after the image on the image bearing member is transferred in the transfer section, and is located near the downstream side of the separation position in the sheet material conveying direction. It is provided,
This is a post-separation conveying device characterized by having a kicking means having a kicking part on the circumferential surface and moving endlessly to apply a kicking force to the sheet material.
[実施例]
第1図は木発明による分離後搬送装置の図、そして第3
図はこれを用いた複写機の断面図である。シート材Pは
、像担持体ドラム12と転写帯電器11の間でその表面
に画像形成され、除電針24で電荷を除去されて像担持
体ドラム12より分1!IIIされる。その後、シート
材Pは蹴り出しローラ30ににつて後端部を押され、搬
送ベルト15、定着入口ガイド19−にを通り、定着ロ
ーラ20a、20bで定着される。[Example] Fig. 1 is a diagram of the post-separation conveyance device according to the invention, and Fig.
The figure is a sectional view of a copying machine using this. An image is formed on the surface of the sheet material P between the image carrier drum 12 and the transfer charger 11, and the electric charge is removed by the charge eliminating needle 24, and the image is removed from the image carrier drum 12 by 1 minute! III. Thereafter, the rear end of the sheet material P is pushed by the kicking roller 30, passes through the conveyor belt 15, the fixing entrance guide 19-, and is fixed by the fixing rollers 20a and 20b.
本実施例の分離後搬送装置においては、h工り出しロー
ラ30の頂上部は、搬送ベルト15を支持するローラ2
3aの頂上より鉛直方向に6〜15mm程度高い゛こと
が望ましい。また、蹴り出しローラ30の断面形状は第
2図に示す如く、周面に蹴り出し突起31を有し、その
矢印で示す回転方向前端部にはシー斗材の後端を押す蹴
り出し部31aがある。In the post-separation conveyance device of this embodiment, the top of the h-cutting roller 30 is connected to the roller 2 that supports the conveyance belt 15.
It is desirable that the height be about 6 to 15 mm higher in the vertical direction than the top of 3a. Further, as shown in FIG. 2, the cross-sectional shape of the kicking roller 30 has a kicking protrusion 31 on the circumferential surface, and at its front end in the direction of rotation shown by the arrow, a kicking part 31a that pushes the rear end of the sheath material. There is.
第5図のように、蹴り出しローラ30の頂上部と搬送ベ
ルト15を支持するローラ23aの最上部との段差Hを
6〜15mmとすることによって、第4図に示すように
、シー]−材Pが定着ローラ20a、20b間に突入す
る際のショックは蹴り出しローラ30と搬送ベルト15
との間に形成されているシート材Pのループ部りにより
吸収され、シート材Pの定着ローラ20a、20bへの
突入ショックによる転写ズレ等を防止する効果がある。As shown in FIG. 5, by setting the level difference H between the top of the kicking roller 30 and the top of the roller 23a that supports the conveyor belt 15 to 6 to 15 mm, as shown in FIG. When the material P enters between the fixing rollers 20a and 20b, the shock is generated by the kicking roller 30 and the conveyor belt 15.
It is absorbed by the loop portion of the sheet material P formed between the sheet material P, and has the effect of preventing transfer displacement due to shock of the sheet material P entering the fixing rollers 20a and 20b.
また、蹴り出しローラ30の周面に蹴り出し部31aを
設けることにより、シート材の後端を押して厚手小サイ
ズ紙等のシート材Pが定着入口ガイド19や定着ローラ
20a、20bに突当り、止まってしまうことを防止す
ることが出来る。(第5図)
また蹴り出しローラ30と像担持体トラム12との位置
関係は、像担持体ドラム12の曲率中心+2aと、転写
帯電器11の帯電ワイヤー11aとを結ぶ線が像担持体
ドラム12の周上で交わる点Tで像担持体ドラム12に
接する接線Mから0〜3mm程像相持体ドラム12側か
ら遠ざかった位置に蹴り出しローラ30の頂上部が有る
事が望ましい。Further, by providing a kicking portion 31a on the circumferential surface of the kicking roller 30, the rear end of the sheet material is pushed and the sheet material P such as thick small size paper hits the fixing entrance guide 19 and the fixing rollers 20a and 20b and stops. It is possible to prevent this from happening. (FIG. 5) Also, regarding the positional relationship between the kicking roller 30 and the image carrier tram 12, the line connecting the center of curvature +2a of the image carrier drum 12 and the charging wire 11a of the transfer charger 11 is the image carrier drum. It is desirable that the top of the kicking roller 30 be located at a position 0 to 3 mm away from the image carrier drum 12 side from the tangent M that touches the image carrier drum 12 at a point T that intersects on the circumference of the image carrier drum 12.
[発明の効果]
以上説明したように、木発明の構成を採ることにより分
離後のシート材に確実な搬送力を与え、シート材が搬送
手段上でスリップしたり、また下流側にある定着ローラ
対に進入できなかったりといった不都合を解消すること
かできる。[Effects of the Invention] As explained above, by adopting the structure of the invention, a reliable conveying force is applied to the separated sheet material, and the sheet material does not slip on the conveying means, or the fixing roller on the downstream side It is possible to solve the inconvenience of not being able to enter a pair.
第1図は本発明を用いた分離後搬送装置を示す断面図、
第2図はめ1つ出しローラの断面図、第3図は本発明を
用いた複写機の断面図、第4図はシート材がループを形
成する状態を示す説明図、第5図は厚手のシート材を押
し出す状態を示す説明図、第6図および第7図は従来の
分離後搬送装置を示す断面図である。
11−m−転写帯電器
12〜−一一像相持体ドラム
15−m−搬送ベルト
20a、20b−−一定着ローラ
24−m−除電針
30−一一蹴り出しローラ
31−一一蹴り出し突起
31a−−一蹴り出し部FIG. 1 is a sectional view showing a post-separation conveyance device using the present invention;
Fig. 2 is a cross-sectional view of the fitted one-out roller, Fig. 3 is a cross-sectional view of a copying machine using the present invention, Fig. 4 is an explanatory diagram showing the state in which the sheet material forms a loop, and Fig. 5 is a thick An explanatory diagram showing a state in which sheet material is pushed out, and FIGS. 6 and 7 are cross-sectional views showing a conventional separation and conveyance device. 11-m-Transfer charger 12--11 Image carrier drum 15-m-Transport belt 20a, 20b--Constant fixing roller 24-m-Charge removal needle 30-11 Kick-out roller 31-11 Kick-out protrusion 31a--Kick out section
Claims (1)
の像担持体から分離されるシート材を搬送する分離後搬
送手段であって、 上記分離位置のシート材搬送方向下流側近傍に設けられ
ており、周面に蹴り出し部を有して無端状に移動してシ
ート材に蹴り出し力を与える蹴り出し手段を有すること
を特徴とする分離後搬送装置。[Scope of Claims] Post-separation conveying means for conveying a sheet material separated from the image bearing member after the image on the image bearing member is transferred in the transfer section, the sheet material conveying unit at the separation position. 1. A post-separation conveyance device characterized by having a kicking means provided near the downstream side in the direction, having a kicking part on the circumferential surface and moving endlessly to apply a kicking force to the sheet material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61147797A JPH0688715B2 (en) | 1986-06-23 | 1986-06-23 | Image forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61147797A JPH0688715B2 (en) | 1986-06-23 | 1986-06-23 | Image forming device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS638157A true JPS638157A (en) | 1988-01-13 |
JPH0688715B2 JPH0688715B2 (en) | 1994-11-09 |
Family
ID=15438425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61147797A Expired - Lifetime JPH0688715B2 (en) | 1986-06-23 | 1986-06-23 | Image forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0688715B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03180864A (en) * | 1989-12-11 | 1991-08-06 | Canon Inc | Image forming device |
US7290765B2 (en) * | 2005-09-21 | 2007-11-06 | Lexmark International, Inc. | Exit roll for an image forming device |
US7401780B2 (en) * | 2004-09-24 | 2008-07-22 | Lexmark International, Inc. | Roller with recessed kicker feature |
JP2008216738A (en) * | 2007-03-06 | 2008-09-18 | Konica Minolta Business Technologies Inc | Image forming apparatus |
US8282099B2 (en) | 2005-02-03 | 2012-10-09 | Fuji Xerox Co., Ltd. | Delivery mechanism, fixing device and image forming apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57190551U (en) * | 1981-05-27 | 1982-12-03 | ||
JPS6151454A (en) * | 1984-08-17 | 1986-03-13 | Matsushita Electric Ind Co Ltd | Paper feeder |
-
1986
- 1986-06-23 JP JP61147797A patent/JPH0688715B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57190551U (en) * | 1981-05-27 | 1982-12-03 | ||
JPS6151454A (en) * | 1984-08-17 | 1986-03-13 | Matsushita Electric Ind Co Ltd | Paper feeder |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03180864A (en) * | 1989-12-11 | 1991-08-06 | Canon Inc | Image forming device |
US7401780B2 (en) * | 2004-09-24 | 2008-07-22 | Lexmark International, Inc. | Roller with recessed kicker feature |
US8282099B2 (en) | 2005-02-03 | 2012-10-09 | Fuji Xerox Co., Ltd. | Delivery mechanism, fixing device and image forming apparatus |
US7290765B2 (en) * | 2005-09-21 | 2007-11-06 | Lexmark International, Inc. | Exit roll for an image forming device |
JP2008216738A (en) * | 2007-03-06 | 2008-09-18 | Konica Minolta Business Technologies Inc | Image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0688715B2 (en) | 1994-11-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |