JPS6067979A - Form peeling device of copying machine - Google Patents
Form peeling device of copying machineInfo
- Publication number
- JPS6067979A JPS6067979A JP17566883A JP17566883A JPS6067979A JP S6067979 A JPS6067979 A JP S6067979A JP 17566883 A JP17566883 A JP 17566883A JP 17566883 A JP17566883 A JP 17566883A JP S6067979 A JPS6067979 A JP S6067979A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- claw
- sliding contact
- paper
- copying machine
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/65—Apparatus which relate to the handling of copy material
- G03G15/6532—Removing a copy sheet form a xerographic drum, band or plate
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
゛ この発明は、複写機の用紙剥離装置に関し、詳しく
は、転写特番ζ付着した用紙を感光体表面から分離する
分離爪の設置構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper separation device for a copying machine, and more particularly to a structure for installing a separation claw that separates paper to which a transfer special number ζ is attached from the surface of a photoreceptor.
従来から複写機の中には、光半導体を利用して書画情報
を普通紙に複写するものがある。2. Description of the Related Art Conventionally, some copying machines use optical semiconductors to copy graphic information onto plain paper.
これを第１図に概念的に示すと、光半導体を円周表面上
に蒸着した感光体ドラム１が回転するに従い、まず帯電
コロトロン誠によって感光体ドラム１０面上に均一に電
荷を付写し、続いて、プラテン３に載置された原稿４の
書画情報を光源５からの光照射で光走査し、このときの
反射光６を反射鏡７ａ、７１よびレンズ８により構成さ
れる光学系を介して感光体ドラム１に入射させて、感光
体ドラム１０表面に原稿４の書画像に対応した静電潜像
を形成する。次いで、この複写機では、この静電潜像を
現像装置９によりて可視像化し、それによって得られた
トナー像を転写コロトロン１０で電荷を与えた用紙１１
に転写する。、さらに、この複写機では、こ６転写後の
感光体ドラム１（！−該感光体ドラム１面上の残留トナ
ーとを除電コロトロン１２によりて電気的に中和させ、
しかる後、感光体ドラム１周面上の残留トナーをクリー
ニング装置１３によって除去し、さらに除電ランプ１４
によりて感光体ドラム［面上を照光して完全に除電して
、感光体ドラム１の繰返し使用を可能にし、しかる後、
帯電コロトロン２により再度感光体ドラム１面上を帯電
させる。以下、上記動作を繰り返す。なお、１５は記録
用紙が幌型されたペーパートレイであり、１６は記録用
紙をペーパートレイ１５上から送り出すフィードローラ
、１７はトナー像を記録用紙に定着させるためのフユー
ザ−である。This is conceptually shown in FIG. 1. As the photoreceptor drum 1, on which the optical semiconductor is deposited on its circumferential surface, rotates, first, a charging corotron is used to uniformly apply charges to the surface of the photoreceptor drum 10. Subsequently, the calligraphic information on the document 4 placed on the platen 3 is scanned by light irradiation from the light source 5, and the reflected light 6 at this time is transmitted through an optical system composed of reflecting mirrors 7a and 71 and a lens 8. is incident on the photoreceptor drum 1 to form an electrostatic latent image corresponding to the written image of the original document 4 on the surface of the photoreceptor drum 10. Next, in this copying machine, this electrostatic latent image is visualized by a developing device 9, and the resulting toner image is transferred to a charged paper 11 by a transfer corotron 10.
Transfer to. Furthermore, in this copying machine, the residual toner on the surface of the photoreceptor drum 1 after the transfer is electrically neutralized by the static eliminating corotron 12,
Thereafter, the residual toner on the circumferential surface of the photosensitive drum 1 is removed by the cleaning device 13, and then the static elimination lamp 14 is removed.
The surface of the photoreceptor drum 1 is illuminated with light to completely eliminate static electricity, allowing the photoreceptor drum 1 to be used repeatedly.
The charging corotron 2 charges the surface of the photosensitive drum 1 again. Thereafter, the above operation is repeated. Note that 15 is a paper tray in which the recording paper is covered, 16 is a feed roller for feeding the recording paper from above the paper tray 15, and 17 is a fuser for fixing the toner image on the recording paper.
ところで、このような複写機には、第２図に示すように
、転写トロコロン１０の後ろにあって、転写時に感光体
ドラム１の表面に静電力により強固に付着した用紙１１
を分離するための分離爪２０を備えているものがある。By the way, as shown in FIG. 2, in such a copying machine, a paper 11 is placed behind the transfer trolley 10 and is firmly attached to the surface of the photoreceptor drum 1 by electrostatic force during transfer.
Some devices are equipped with separation claws 20 for separating the .
この分離爪２０は、その先端が感光体ドラムｌの表面ｉ
ｃｍｐし、転写済みの用紙１１が、矢印ムの方向に回転
する感光体ドラム１に付着して移行してくると、用紙１
１の先端が分離爪２０に当接し、さらに用紙１１が移行
する番と従って感光体ドラム１と用紙１１との間に分離
爪２０が介入してゆき、用紙１１をドラム１から分離す
る。This separating claw 20 has its tip end on the surface i of the photoreceptor drum l.
cmp, and the transferred paper 11 adheres to the photosensitive drum 1 rotating in the direction of the arrow M and moves.
1 comes into contact with the separating claw 20, and then the separating claw 20 intervenes between the photosensitive drum 1 and the paper 11 according to the number of sheets 11 to be transferred, and separates the paper 11 from the drum 1.
この時、分離爪２０は、感光体ドラムｌに付着した用紙
１．Ｈこ常に尚接し、分離作業を先行するために、感光
体ドラム１の摺接点２５に引いた接線３０の外側に設け
た軸ａを中心に回転自在に装着され、重心Ｘ＃こかかる
自重Ｗが生じる回転モーメントで常にドラム１に摺接し
ている。At this time, the separation claw 20 separates the paper 1. attached to the photoreceptor drum l. In order to remain in contact with the photoreceptor drum 1 and precede the separation operation, it is mounted rotatably around an axis a provided outside the tangent 30 drawn to the sliding contact point 25 of the photoreceptor drum 1, and the self-weight W applied to the center of gravity X# It is always in sliding contact with the drum 1 due to the rotational moment generated.
ところが、このような取付構造であると、軸ａが接［３
０の外側に設けられているので、摺接時のドラム１との
間に生じる摩擦力や、用紙との当接時の衝撃、あるいは
用紙を分離するときに生じる圧力等を軸ａが受けて、分
離爪２ｏに与えられる回転モーメントは、ドラム１を押
圧するように（矢印Ｂ方向に１）発生し、感光体ドラム
１の摩耗を促進する。However, with such a mounting structure, the axis a is in contact [3
Since it is provided on the outside of the drum 1, the shaft a receives the frictional force generated between it and the drum 1 during sliding contact, the impact when it comes into contact with the paper, the pressure generated when separating the paper, etc. The rotation moment applied to the separation claw 2o is generated so as to press the drum 1 (1 in the direction of arrow B), and accelerates the wear of the photosensitive drum 1.
〈のため、不良な画像が生じたり、感光体ドラム１の寿
命を短縮する等、問題を生じていた。This has caused problems such as producing defective images and shortening the life of the photosensitive drum 1.
この発明は、このような問題に着目し、用紙の分離爪に
よるドラムの摩耗速度を減少し、長期に渡って良画質の
複写ができるよう１こ感光体ドラムの寿命を延ばす分離
爪を提供することを目的とする。The present invention focuses on such a problem, and provides a separating claw that reduces the rate of wear of the drum due to the paper separating claw and extends the life of the photoreceptor drum so that high-quality copies can be made over a long period of time. The purpose is to
そのために、本発明に＃いては、分離爪を支える支点を
ドラムの摺接点に引いた接線の内側に設け、分離爪の自
重のみがドラム摺接点に与えられるようにして上記目的
を達成している。To this end, the present invention achieves the above object by providing a fulcrum that supports the separating claw inside the tangent line drawn to the sliding contact point of the drum, so that only the weight of the separating claw is applied to the drum sliding contact point. There is.
以下、図面に基づいて本発明の実施例について説明する
。Embodiments of the present invention will be described below based on the drawings.
第２図において、分離爪２０ａは１く」の字型に形成さ
れ、その一方の辺の先端が感光体ドラム１に摺接し、用
紙１１と当接して、これ１１をドラム１から分離する。In FIG. 2, the separating claw 20a is formed in a dogleg shape, and the tip of one side thereof slides on the photosensitive drum 1, comes into contact with the paper 11, and separates the paper 11 from the drum 1.
他方の辺の先端は、摺接点２５ａに引いたドラム１の接
線３０の内側に突出して、その一部に軸すが設けられる
。この時、軸すは分離爪２０ａの重心Ｘよりも、ドラム
側に設けられ、分離爪２０ａを回転自在に支持している
。The tip of the other side projects inside the tangent line 30 of the drum 1 drawn to the sliding contact point 25a, and a shaft is provided in a part thereof. At this time, the shaft is provided closer to the drum than the center of gravity X of the separating claw 20a, and rotatably supports the separating claw 20a.
このように構成すると、分離爪２０ａは自重のみで生ず
る回転モーメントに支えられ、常にドラムエに摺接して
用紙の分離を先行するが、分離時に発生する力、例えば
付着した用紙１１が分離爪２０ａに当接する衝撃力、摺
接によって生ずる摩擦力、あるいは分離時の用紙１１の
圧力等の力は接線３０上に生ずるため、これらの力が接
線の内側にある軸すによりて支えられて、分離爪２０ａ
に与えられる回転モーメントはドラム１０半径方向の外
側に（矢印Ｃ方向に）向かい、ドラムｌに無用な押圧力
をかけることはない。With this configuration, the separation claw 20a is supported by the rotational moment generated only by its own weight, and always slides into contact with the drum and precedes the paper separation. Forces such as the impact force of contact, the frictional force caused by sliding contact, or the pressure of the paper 11 during separation occur on the tangent line 30, so these forces are supported by the shaft located inside the tangent line, and the separation claw 20a
The rotational moment applied to the drum 10 is directed outward in the radial direction (in the direction of arrow C), and no unnecessary pressing force is applied to the drum 1.
分離爪２０暑は、例えばプラスチックで形成することが
でき、この場合、はぼ重心Ｘ部にステンレス鋼で形成し
た円柱状のおもりを埋め込み、これを調節することによ
って最適な摺接圧力を保つことができる。The separation claw 20 can be made of plastic, for example, and in this case, a cylindrical weight made of stainless steel is embedded in the center of gravity X, and by adjusting this, the optimum sliding contact pressure can be maintained. I can do it.
また、感光体ドラム１の周速度が２００ｗ／ｓｅｃの場
合、軸すと接線の路離ｙを７Ｂとおけば、摺接点２５ａ
の沿直方向に対するドラムｌ上の角度θを３０’と設定
することができる。Further, when the circumferential speed of the photosensitive drum 1 is 200 W/sec, if the path distance y of the tangent to the axis is set to 7B, the sliding contact 25a
The angle θ on the drum l with respect to the vertical direction can be set to 30'.
以上説明したように、本発明においては、感光体ドラム
に摺接して用紙を分離する分離爪の支持軸をドラムの摺
接点に引いた接線の内側に設けることにより、ドラムに
無用な押圧力をかけることを防止し、ドラムの摩耗を防
ぎ、その寿命を延ばして、長期ｌこ渡りて良質の画像を
提供することができる。As explained above, in the present invention, by providing the support shaft of the separation claw that separates the paper by slidingly contacting the photoreceptor drum inside the tangent line drawn to the sliding contact point of the drum, unnecessary pressing force is applied to the drum. It is possible to prevent damage to the drum, prevent abrasion of the drum, extend its life, and provide high-quality images for a long time.
第１図は従来の複写機の概略説明図、第２図はその分離
爪の概略図、第３図は本発明に係る分離爪の実施例を示
す概略図である。
１・・・感光体ドラム、１１・・・用紙、２０．２０ａ
・−分離爪、２５．２５ａ・・・摺接点、３０・・・接
線、ａ、ｂ・・・取付軸。FIG. 1 is a schematic illustration of a conventional copying machine, FIG. 2 is a schematic diagram of its separation claw, and FIG. 3 is a schematic diagram showing an embodiment of the separation claw according to the present invention. 1... Photosensitive drum, 11... Paper, 20.20a
- Separation claw, 25.25a...Sliding contact, 30...Tangent line, a, b...Mounting shaft.
Claims (1)
させ、該爪の先端を感光体ドラムζこ摺接させて、ドラ
ム上に付着した普通紙を該ドラムから分離するようにし
た複写機の用紙剥離装置において、上記軸を上記ドラム
上の爪の摺接点に引いた接線の内側に位置させたことを
特徴とする複写機の用紙剥離装置。A copying machine in which a separating claw is rotatably supported on the copying machine frame side by a shaft, and the tip of the claw is brought into sliding contact with a photosensitive drum to separate plain paper stuck on the drum from the drum. 1. A paper peeling device for a copying machine, wherein the shaft is located inside a tangent line drawn to a sliding contact point of a pawl on the drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17566883A JPS6067979A (en) | 1983-09-22 | 1983-09-22 | Form peeling device of copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17566883A JPS6067979A (en) | 1983-09-22 | 1983-09-22 | Form peeling device of copying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6067979A true JPS6067979A (en) | 1985-04-18 |
| JPH0331265B2 JPH0331265B2 (en) | 1991-05-02 |
Family
ID=16000135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17566883A Granted JPS6067979A (en) | 1983-09-22 | 1983-09-22 | Form peeling device of copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6067979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02103044A (en) * | 1988-10-12 | 1990-04-16 | Fuji Photo Film Co Ltd | Sheet separating device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4100540A1 (en) | 2020-02-07 | 2022-12-14 | Metabolic Explorer | Modified microorganism and method for the improved production of ectoine |
-
1983
- 1983-09-22 JP JP17566883A patent/JPS6067979A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02103044A (en) * | 1988-10-12 | 1990-04-16 | Fuji Photo Film Co Ltd | Sheet separating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0331265B2 (en) | 1991-05-02 |
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