JPH01294131A - Paper feeding device - Google Patents
Paper feeding deviceInfo
- Publication number
- JPH01294131A JPH01294131A JP12180288A JP12180288A JPH01294131A JP H01294131 A JPH01294131 A JP H01294131A JP 12180288 A JP12180288 A JP 12180288A JP 12180288 A JP12180288 A JP 12180288A JP H01294131 A JPH01294131 A JP H01294131A
- Authority
- JP
- Japan
- Prior art keywords
- paper feed
- paper
- separation member
- feed roller
- friction body
- 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
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、複写機等に対するカット用紙の給紙装置に係
り、特にカット用紙の給紙ローラ及び分離部材の保守作
業に好適な給紙装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feed device for cut paper for copying machines, etc., and is particularly suitable for maintenance work of paper feed rollers and separation members for cut paper. Regarding.
従来の給紙装置は、給紙ローラ及び分離部材の長期使用
時の保守性については考慮されておらず、実公昭６２−
４７５４５号公報に開示されているものは、給紙ローラ
に対する分離部材の加圧を解除する構成に関するもので
ある。Conventional paper feeding devices do not consider the maintainability of paper feeding rollers and separation members during long-term use, and
What is disclosed in Japanese Patent No. 47545 is related to a structure for releasing the pressure of the separation member against the paper feed roller.
給紙装置の従来技術は、カット用紙の給紙能力の低下、
多重送り等の給紙不良が直接原因となって複写機本体の
寿命低下をもたらすという問題点があった。本発明は、
給紙ローラ及び分離部材の保守点検性の向上のための課
題を解決するもので、給紙ローラ及び分離部材の複写機
への取り付け、取り外しを容易にすることにより、定期
点検時等における保守性の優れた給紙装置を提供するこ
とを目的としている。Conventional paper feeding device technology has problems such as reduced paper feeding capacity for cut paper,
There has been a problem in that paper feeding failures such as multiple feeding are directly responsible for shortening the lifespan of the copying machine itself. The present invention
This solves the problem of improving the ease of maintenance and inspection of the paper feed roller and separation member.By making it easier to attach and remove the paper feed roller and separation member from the copying machine, it improves maintainability during periodic inspections, etc. The purpose is to provide an excellent paper feeding device.
上記の目的は、片持支持され固定端側に止めピンと自由
端側に環状溝を備えるローラ軸と、止めピンが当接する
段付穴と環状溝に嵌合してスラスト方向の移動を拘束す
る爪片とを備える給紙ローラと、前記給紙ローラの面と
接面する摩擦体を備える分離部材とを設け、付勢された
圧縮バネと前記ローラ面の法線方向に摩擦体を誘導して
加圧するように構成することによって達成される。The purpose of the above is to use a roller shaft that is cantilever supported and has a stop pin on the fixed end side and an annular groove on the free end side, and the stop pin fits into the stepped hole and annular groove that come into contact with it to restrain movement in the thrust direction. A paper feed roller including a claw piece and a separation member including a friction body in contact with a surface of the paper feed roller are provided, and the friction body is guided in the normal direction of the biased compression spring and the roller surface. This is achieved by configuring the device to apply pressure.
上記の構成により、給紙ローラはローラ軸のスラスト方
向へ力を加え°ることによって着脱可能であり、給紙ロ
ーラを取り外せば分離部材は容易に取り出すことが可能
である。With the above configuration, the paper feed roller can be attached and removed by applying force in the thrust direction of the roller shaft, and the separation member can be easily taken out by removing the paper feed roller.
本発明の一実施例を図面と共に説明する。第３図は本発
明の適用可能なレーザビームプリンタであって、矢印り
方向に回転する感光ドラム６の表面を帯電器７により一
様に帯電させ、レーザビーム発生器８から発生するレー
ザビーム９で露光した電荷潜像を現像器１０で現像と、
トナー像すなわち可視像とする。給紙カセット１１に収
容されたカット用紙１２は高摩擦性ゴムを使用した給紙
ローラ１と摩擦体２ａとの間を通過させた後、レジスト
ローラ１３に誘導され、前記可視像と転写のタイミング
を調整され、紙搬送器１４を経て感光ドラム６と接合し
、転写器１５により転写バイアスを与えて感光ドラム６
上に形成された可視像をカット用紙１２に転写する。転
写されたカット用紙１２は、定着ローラ１６を通過する
間に熱定着され排紙トレイ１７に移送される。An embodiment of the present invention will be described with reference to the drawings. FIG. 3 shows a laser beam printer to which the present invention can be applied, in which the surface of a photosensitive drum 6 rotating in the direction of the arrow is uniformly charged by a charger 7, and a laser beam 9 is generated from a laser beam generator 8. Developing the charged latent image exposed with the developing device 10;
A toner image, that is, a visible image. The cut paper 12 stored in the paper feed cassette 11 is passed between the paper feed roller 1 made of high friction rubber and the friction body 2a, and then guided to the registration rollers 13, where the visible image and the transferred image are separated. The timing is adjusted, the paper is bonded to the photosensitive drum 6 via the paper conveyor 14, and a transfer bias is applied by the transfer device 15 to transfer the paper to the photosensitive drum 6.
The visible image formed thereon is transferred to cut paper 12. The transferred cut paper 12 is thermally fixed while passing through a fixing roller 16 and is transferred to a paper discharge tray 17.
上記構成のレーザプリンタに装着する本発明の要部を第
１．２図に示す。レーザプリンタ本体に片持支持された
ローラ軸３に嵌合する給紙ローラ１と、給紙ローラ１の
円筒面と接触する摩擦体２ａを備える分離部材２は、レ
ーザプリンタ本体に固定された給紙ベース４の面に沿っ
て摺動する。The main parts of the present invention installed in the laser printer having the above configuration are shown in FIG. 1.2. A paper feed roller 1 that fits into a roller shaft 3 that is cantilever-supported on the laser printer main body, and a separation member 2 that includes a friction body 2a that contacts the cylindrical surface of the paper feed roller 1 are connected to a paper feed roller that is fixed to the laser printer main body. It slides along the surface of the paper base 4.
１８は摺動ピン、５は給紙ベース４の突起４ａと分離部
材２の突起２ｂとの間に装着された圧縮バネであって、
給紙ローラ１と摩擦体２ａとの間に適正な加圧力を付加
するように構成されている。18 is a sliding pin, 5 is a compression spring installed between the protrusion 4a of the paper feed base 4 and the protrusion 2b of the separation member 2,
It is configured to apply an appropriate pressing force between the paper feed roller 1 and the friction body 2a.
給紙ローラ１及び分離部材２はレーザプリンタ本体から
給紙カセット１１を引き出した際、外部から目視可能な
位置に配設されている。The paper feed roller 1 and the separation member 2 are arranged at a position where they can be visually seen from the outside when the paper feed cassette 11 is pulled out from the laser printer main body.
第２図に示すように、ローラ軸３は固定端寄りに固定し
た止めピン１９と自由端近傍に環状溝３ａを備え、また
給紙ローラ１は止めピン１９が当接する段付穴１ａと前
記環状溝３ａに係合する弾性爪片１ｂとを備えており、
ローラ軸３の自由端側から矢印Ａ方向に、止めピン１９
が段付穴１ａと当接する位置まで挿入すると、付勢され
た弾性爪片１ｂが環状溝３ａに係合する。これにより給
紙ローラ１はスラスト方向への移動を拘束される。逆に
第１図に示すように、給紙ローラ１を弾性爪片１ｂに付
勢力に抗して矢印Ｂ方向に引けば、ローラ軸３から取り
外すことができ、続いて分離部材２は摺動案内２ｃは沿
って矢印Ｃ方向に容易に引き出すことが可能である。上
記構成により給紙ローラ１及び分離部材２の部品交換は
、レーザプリンタ本体から給紙カセットを取り外した状
態からは極めて容易である。As shown in FIG. 2, the roller shaft 3 has a stop pin 19 fixed near the fixed end and an annular groove 3a near the free end, and the paper feed roller 1 has a stepped hole 1a on which the stop pin 19 comes into contact, and a groove 3a near the free end. It is equipped with an elastic claw piece 1b that engages with the annular groove 3a,
From the free end side of the roller shaft 3 in the direction of arrow A, the stop pin 19
When it is inserted to the position where it contacts the stepped hole 1a, the biased elastic claw piece 1b engages with the annular groove 3a. As a result, the paper feed roller 1 is restricted from moving in the thrust direction. Conversely, as shown in FIG. 1, by pulling the paper feed roller 1 in the direction of arrow B against the biasing force of the elastic claw piece 1b, it can be removed from the roller shaft 3, and then the separating member 2 is slid. The guide 2c can be easily pulled out in the direction of arrow C along the guide 2c. With the above configuration, parts replacement of the paper feed roller 1 and separation member 2 is extremely easy after the paper feed cassette is removed from the laser printer main body.
本発明の実施により、給紙ローラおよび分離部材の着脱
操作が容易になるので、部品の交換および点検等装置の
保守作業の能率と信頼性の向上に著しい効果が見られた
。By implementing the present invention, the paper feed roller and the separating member can be easily attached and detached, and a remarkable effect has been seen in improving the efficiency and reliability of maintenance work for the apparatus, such as parts replacement and inspection.
【図面の簡単な説明】
第１図は本発明に係る給紙装置の一実施例の要部斜視図
、第２図は第１図絵紙ローラの縦断面図、第３図は本発
明の適用可能なレーザビームプリンタの構成を示す説明
図である。
１・・・給紙ローラ、１ａ・・・段付穴、１ｂ・・・弾
性爪片、２・・・分離部材、２ａ・・・摩擦体、２ｂ・
・・案内突起、２ｃ・・・摺動案内、３・・・ローラ軸
、３ａ・・・環状溝。
４・・・給紙ベース、４ａ・・・案内突起、５・・・圧
縮バネ、第１図[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a perspective view of essential parts of an embodiment of the paper feeding device according to the present invention, Fig. 2 is a vertical sectional view of the picture paper roller shown in Fig. 1, and Fig. 3 is an application of the present invention. FIG. 2 is an explanatory diagram showing the configuration of a possible laser beam printer. DESCRIPTION OF SYMBOLS 1... Paper feed roller, 1a... Stepped hole, 1b... Elastic claw piece, 2... Separation member, 2a... Friction body, 2b...
...Guide protrusion, 2c...Sliding guide, 3...Roller shaft, 3a...Annular groove. 4... Paper feed base, 4a... Guide protrusion, 5... Compression spring, Fig. 1
Claims (1)
ット用紙を給紙ローラと接面する摩擦体の間から１枚ず
つ送出する給紙装置において、片持支持の固定端側に止
めピンと自由端側に環状溝を備えるローラ軸と、前記止
めピンが当接する段付穴と前記環状溝に嵌合してスラス
ト方向の移動を拘束する爪片とを備える給紙ローラと、
カット用紙の送出方向と概ね直交する面を有するように
配設した給紙ベースと、前記給紙ローラ面と接面する摩
擦体を固定し前記給紙ベース面を摺動する分離部材と、
前記摩擦体を給紙ローラ面の下面から法線方向に押圧す
る手段とを具有することを特徴とする給紙装置。 ２、前記摩擦体を前記給紙ローラ面に押圧する手段は、
前記給紙ベースと前記分離部材の間に介在して前記分離
部材を前記給紙ローラの方向に付勢する圧縮バネと、給
紙ベースと前記分離部材にそれぞれ設けた前記圧縮バネ
用の案内突起から成ることを特徴とする特許請求の範囲
第１項記載の給紙装置。[Claims] 1. In a paper feed device that feeds a large number of cut sheets stored in a paper feed cassette one by one from between a friction body in contact with a paper feed roller in response to a paper feed command, a cantilever supported A paper feeder comprising: a roller shaft having a stop pin on the fixed end side and an annular groove on the free end side; a stepped hole in which the stop pin abuts; and a claw piece that fits in the annular groove to restrict movement in the thrust direction. Laura and
a paper feed base arranged to have a surface substantially perpendicular to the feeding direction of the cut paper; a separation member that fixes a friction body in contact with the paper feed roller surface and slides on the paper feed base surface;
A paper feeding device comprising: means for pressing the friction body in the normal direction from the lower surface of the paper feeding roller surface. 2. The means for pressing the friction body against the paper feed roller surface,
a compression spring interposed between the paper feed base and the separation member to bias the separation member in the direction of the paper feed roller; and a guide protrusion for the compression spring provided on the paper feed base and the separation member, respectively. A paper feeding device according to claim 1, characterized in that the paper feeding device comprises:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12180288A JPH01294131A (en) | 1988-05-20 | 1988-05-20 | Paper feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12180288A JPH01294131A (en) | 1988-05-20 | 1988-05-20 | Paper feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01294131A true JPH01294131A (en) | 1989-11-28 |
Family
ID=14820287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12180288A Pending JPH01294131A (en) | 1988-05-20 | 1988-05-20 | Paper feeding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01294131A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265859A (en) * | 1991-09-11 | 1993-11-30 | Xerox Corporation | Sheet feed apparatus |
| EP0707242A3 (en) * | 1994-10-12 | 1999-05-26 | Xerox Corporation | Sheet feeding assembly |
| JP2015075497A (en) * | 2013-10-04 | 2015-04-20 | キヤノン株式会社 | Connecting device, sheet transport device and drive transmission device |
-
1988
- 1988-05-20 JP JP12180288A patent/JPH01294131A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265859A (en) * | 1991-09-11 | 1993-11-30 | Xerox Corporation | Sheet feed apparatus |
| EP0707242A3 (en) * | 1994-10-12 | 1999-05-26 | Xerox Corporation | Sheet feeding assembly |
| JP2015075497A (en) * | 2013-10-04 | 2015-04-20 | キヤノン株式会社 | Connecting device, sheet transport device and drive transmission device |
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