JPH05313550A - Photosensitive belt supporting device - Google Patents
Photosensitive belt supporting deviceInfo
- Publication number
- JPH05313550A JPH05313550A JP14093392A JP14093392A JPH05313550A JP H05313550 A JPH05313550 A JP H05313550A JP 14093392 A JP14093392 A JP 14093392A JP 14093392 A JP14093392 A JP 14093392A JP H05313550 A JPH05313550 A JP H05313550A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- photosensitive
- low friction
- friction resistance
- back surface
- 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
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はファクシミリ、プリン
タ、複写機などに適用されるベルト状の感光体の支持装
置の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a belt-shaped photosensitive member supporting device applied to a facsimile, a printer, a copying machine or the like.
【０００２】[0002]
【従来の技術】複写機、プリンタ、ファクシミリ装置等
の電子写真プロセスを利用した画像形成装置にあって
は、原稿反射光等の光学的な画像情報を一様に帯電した
感光体上に照射して感光体上に形成した静電潜像を現像
することによって得た顕像を記録紙上に転写、定着する
ことにより画像形成を行っている。2. Description of the Related Art In an image forming apparatus utilizing an electrophotographic process such as a copying machine, a printer and a facsimile machine, optical image information such as reflected light of a document is irradiated onto a uniformly charged photoreceptor. An image is formed by transferring and fixing the visible image obtained by developing the electrostatic latent image formed on the photoconductor on the recording paper.
【０００３】ところで、特開平3-156483号公報には、基
板を金属としたエンドレスベルト状の感光体と、この感
光体ベルトの露光位置の裏面側に設置されて感光体裏面
と接する露光対向板とを備えた電子写真記録装置におい
て、露光対向板全体を摩擦係数の小さいナイロン又はテ
フロンで成型したり、露光対向金属板にテフロン膜又は
ポリイミドフィルムを貼着し、この貼着材をベルトの感
光面と反対側の面に摺動させるようにした感光体ベルト
の支持装置が開示されている。By the way, Japanese Patent Laid-Open No. 3-156483 discloses an endless belt-shaped photoconductor having a substrate as a metal, and an exposure counter plate placed on the back side of the exposure position of the photoconductor belt and in contact with the back surface of the photoconductor. In an electrophotographic recording apparatus equipped with, the entire exposure facing plate is molded with nylon or Teflon having a small friction coefficient, or a Teflon film or a polyimide film is attached to the exposure facing metal plate, and this adhesive material is used as a belt photosensitive material. There is disclosed a support device for a photosensitive belt that is slid to the surface opposite to the surface.
【０００４】しかしながら、全体をナイロン又はテフロ
ンで成型した露光対向板は、温度、湿度による経時変化
が大きく、変形するベルトの光書込み位置の波打ちを安
定して抑制することが困難である。また、露光対向板に
テフロン膜又はポリイミドフィルムを貼着したものは、
この貼着材が金属ベルトの感光面と摺動する際に、摩擦
によりベルト表面に周方向の筋が発生するなど感光体の
基板に凹凸が発生し、応力集中の原因となる。However, the exposure facing plate, which is wholly molded of nylon or Teflon, undergoes a large change with time due to temperature and humidity, and it is difficult to stably suppress the corrugation of the optical writing position of the deformed belt. In addition, the one with a Teflon film or polyimide film attached to the exposure counter plate is
When this adhesive material slides on the photosensitive surface of the metal belt, unevenness is generated on the substrate of the photosensitive member such as circumferential streaks on the belt surface due to friction, which causes stress concentration.
【０００５】[0005]
【発明の目的】そこで本発明は感光体ベルトの感光面と
対向する裏面と摺動する低摩擦抵抗体の摺動に伴う機械
力を吸収して波打ち（凹凸）や応力集中の原因を抑制し
た感光体ベルト支持装置を提供することを目的とする。SUMMARY OF THE INVENTION Therefore, the present invention absorbs the mechanical force associated with the sliding of a low-friction resistor that slides on the back surface facing the photosensitive surface of the photosensitive belt to suppress the causes of corrugation (unevenness) and stress concentration. An object of the present invention is to provide a photosensitive belt supporting device.
【０００６】[0006]
【発明の構成】上記目的を達成するため本発明は、金属
基板の継目無ベルトの表面に有機感光体を塗布した感光
体ベルトの感光表面における光書込み位置に対向する当
該感光体ベルトの裏面に支持体を摺接した感光体ベルト
支持装置において、前記感光体ベルトの裏面と摺接する
低摩擦抵抗体と、フレームに固設された保持体と、前記
低摩擦抵抗体と保持体との間に設けられて、前記低摩擦
抵抗体と前記裏面とが摺動する際に、前記低摩擦抵抗体
に伝達される摺動に伴う機械力を吸収する弾性体とを具
備する構成とし、また、金属基板の継目無ベルトの表面
に有機感光体を塗布した感光体ベルトの感光表面におけ
る光書込み位置に対向する当該感光体を摺接した感光体
ベルト支持装置において、前記感光体ベルト裏面と摺接
する低摩擦体と、フレームに固設されて、前記低摩擦抵
抗体と前記裏面とが摺動する際に、前記低摩擦抵抗体に
伝達される摺動に伴う機械力を吸収する弾性体と、前記
低摩擦抵抗体と前記弾性体との間に設けた保持体とを具
備する構成とし、また、金属基板の継目無しベルトの表
面に有機感光体を塗布した感光体ベルトの感光表面にお
ける光書込み位置に対向する当該感光体を摺接した感光
体ベルト支持装置において、前記感光体ベルトの裏面と
摺接する低摩擦抵抗体と、当該ベルトが回動される際の
ベルトの張り側における所定のベルトの撓みを発生させ
る当接力を前記低摩擦抵抗体に付与する当接力付与手段
とを具備する構成とし、さらに、前記弾性体を発泡ウレ
タンとして本発明の目的を達成する。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a surface of a seamless belt of a metal substrate on the back surface of the photosensitive belt facing the optical writing position on the photosensitive surface of the photosensitive belt coated with an organic photosensitive material. In a photoreceptor belt support device in which a support is slidably contacted, a low friction resistance body slidably contacting the back surface of the photoreceptor belt, a holding body fixed to a frame, and the low friction resistance body and the holding body A structure provided with an elastic body that absorbs mechanical force due to the sliding transmitted to the low friction resistance body when the low friction resistance body and the back surface slide with each other; In a photoconductor belt support device in which the photoconductor surface of a seamless belt of a substrate is coated with an organic photoconductor, the photoconductor belt is in sliding contact with the photoconductor surface facing the optical writing position. A friction body, An elastic body that is fixed to a frame and absorbs mechanical force due to sliding transmitted to the low friction resistance body when the low friction resistance body and the back surface slide; and the low friction resistance body. And a holding body provided between the elastic body and the elastic body, and the surface of the seamless belt made of a metal substrate is coated with an organic photoreceptor so as to face the optical writing position on the photosensitive surface of the photosensitive belt. In a photoconductor belt support device in which a photoconductor slides, a low-friction resistor that slides in contact with the back surface of the photoconductor belt and a predetermined belt bending on the tension side of the belt when the belt is rotated are generated. The object of the present invention is achieved by using a contact force imparting means for imparting an abutting force to the low friction resistance body, and further using the elastic body as urethane foam.
【０００７】[0007]
【作用】感光体ベルトの走行過程において、このベルト
の面と摺動している超高分子ポリエチレンテープなどの
低摩擦抵抗体が受ける機械的振動は、この抵抗体と保持
体との間に貼設されている発泡ウレタンなどの弾性体に
吸収される。また、上記の振動は、保持体に直接伝達さ
れ保持体を中吊りにしている弾性体に吸収される。この
ように機械的振動が弾性体を有する支持体に吸収される
ことによって、感光体ベルトの表面の波打ちや、応力集
中の原因を抑制する作用が働く。In the running process of the photoconductor belt, the mechanical vibration applied to the low friction resistance body such as the ultra-high molecular weight polyethylene tape sliding on the surface of the belt is applied between the resistance body and the holding body. It is absorbed by the elastic body such as urethane foam. Further, the above vibration is directly transmitted to the holding body and absorbed by the elastic body that suspends the holding body. In this way, the mechanical vibration is absorbed by the support having an elastic body, so that the action of suppressing the corrugation of the surface of the photosensitive belt and the cause of stress concentration works.
【０００８】[0008]
【実施例】以下、添付図面により本発明を詳細に説明す
る。図１は本発明を適用した電子写真記録装置の主要部
を示す構成図である。金属基板の継目無ベルト上に有機
感光体（Organic Photo-Conductor ）を塗布した感光体
ベルト10が、従動ローラ11、12と駆動ローラ13に掛け渡
されている。駆動ローラ13は図示しない駆動機構から供
給される駆動力を受けて感光体ベルト10に動力を伝動す
る。感光体ベルト10の張り側である支持ローラ11と駆動
ローラ13との間のこのベルトの感光表面における光書込
み位置Ａに対向する裏面に本発明の支持装置14を当接す
る。支持装置14は支持ローラ11とを駆動ローラ13との各
張り側外周を結ぶ二点鎖線Ｂより図示しない書込み光源
の方向に距離Ｘだけ、ベルトを撓ませる当接力をベルト
10の光書込み位置に対向する裏面からベルト10に付与し
ている。この距離Ｘはベルト10のいわゆる波打ち量に合
わせてその波打ちを抑制できる位置に設定する。The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a configuration diagram showing a main part of an electrophotographic recording apparatus to which the present invention is applied. A photosensitive belt 10 in which an organic photosensitive body (Organic Photo-Conductor) is applied on a seamless belt of a metal substrate is stretched around driven rollers 11 and 12 and a driving roller 13. The driving roller 13 receives a driving force supplied from a driving mechanism (not shown) and transmits the power to the photoconductor belt 10. The support device 14 of the present invention is brought into contact with the back surface of the photosensitive surface of the belt between the support roller 11 and the drive roller 13, which is the tension side of the photoreceptor belt 10, and which faces the optical writing position A. The support device 14 applies a contact force that causes the belt to bend by a distance X in the direction of a writing light source (not shown) from a chain double-dashed line B that connects the support roller 11 and the drive roller 13 to each other.
The belt 10 is applied from the back surface facing the optical writing position of 10. This distance X is set at a position where the waviness of the belt 10 can be suppressed in accordance with the so-called waviness of the belt 10.
【０００９】このように構成すると、ベルト10が支持装
置14の当接力によって図示しない書込み光源の方向に押
圧される状態にあるので、支持装置14のベルト裏面との
当接面が光書込み位置Ａを決定してベルト10における露
光位置の精度が向上し、ベルト10の露光位置を常に露光
の焦点深度内に保持することができる。また、ベルト10
の回動に伴う波打ちを抑制することができる。With this structure, since the belt 10 is pressed in the direction of the writing light source (not shown) by the contact force of the supporting device 14, the contact surface of the supporting device 14 with the back surface of the belt is the optical writing position A. Therefore, the accuracy of the exposure position on the belt 10 is improved, and the exposure position of the belt 10 can always be kept within the depth of focus of exposure. Also, belt 10
It is possible to suppress the waviness associated with the rotation of the.
【００１０】感光体ベルト10（図１）は従動ローラ11、
12に支持され駆動ローラ13によって矢印Ｒの方向に回動
される過程で、まず帯電器15により帯電されて、露光位
置Ａで露光光により記録情報が潜像として記録される。
感光体ベルト10に記録された潜像は、現像器16によりト
ナー現像され、転写器17により転写紙に転写されて図示
しない定着器で転写紙へ定着される。上記の転写動作
後、感光体ベルト10の感光表面は、残留トナーがクリー
ニング器18で除去されて清掃され、さらに除電ランプ19
により電荷が除去される。The photoreceptor belt 10 (FIG. 1) is a driven roller 11,
In the process of being supported by 12 and rotated by the drive roller 13 in the direction of arrow R, the recording device is first charged by the charger 15 and the recording information is recorded as a latent image by the exposure light at the exposure position A.
The latent image recorded on the photoconductor belt 10 is subjected to toner development by the developing device 16, transferred to transfer paper by the transfer device 17, and fixed on the transfer paper by a fixing device (not shown). After the above-described transfer operation, the photosensitive surface of the photoconductor belt 10 is cleaned by removing the residual toner by the cleaning device 18, and further the static elimination lamp 19 is used.
The charges are removed by.
【００１１】図２は図１に示す本発明の支持装置14の第
１の実施例の構成を示す。図示しないフレームに固設さ
れて感光体ベルト10の回動方向に曲部20Ａを有する支持
体20の曲部20の上曲面に、たとえば、発泡ウレタン等の
弾性体21を貼設し、さらにその上曲面に、たとえば、超
高分子ポリエチレンテープ等の低摩擦抵抗体22を貼設す
る。FIG. 2 shows the structure of a first embodiment of the supporting device 14 of the present invention shown in FIG. An elastic body 21 such as urethane foam is attached to the upper curved surface of the curved portion 20 of the support 20 fixed to a frame (not shown) and having a curved portion 20A in the rotation direction of the photosensitive belt 10. On the upper curved surface, for example, a low friction resistance element 22 such as an ultra high molecular weight polyethylene tape is attached.
【００１２】感光体ベルト10の回動に際し発生する低摩
擦抵抗体22の曲面22Ａとこのベルト10の裏面との摺擦に
伴う振動等の機械力を、当接弾性体21が吸収してベルト
基板に凹凸（波打ち）が発生するのを抑制する。これに
より基板への応力集中を抑制する。The contact elastic body 21 absorbs mechanical forces such as vibrations caused by sliding friction between the curved surface 22A of the low friction resistance body 22 and the back surface of the belt 10 generated when the photoreceptor belt 10 rotates, and the contact elastic body 21 absorbs the mechanical force. Suppression of unevenness (waviness) on the substrate. This suppresses stress concentration on the substrate.
【００１３】図３は図１に示す本発明の支持装置14の第
２の実施例の構成を示す。フレーム30に固設されたリン
グ状の発泡ウレタン等の弾性体（当接力付与手段）31の
内周部31Ａに溝設した貼着溝32内に、支持体33の外周に
突状に周設した鍔34を貼着又は融着する。第１の実施例
（図１）と同様に、支持体34と、例えば、超高分子ポリ
エチレンテープ等の低摩擦抵抗体35と支持体33との接合
面36は感光体ベルト10（図１）の回動方向に曲部を有す
る。この低摩擦抵抗体35は当該接合面36において支持体
33の当該曲部の曲面に貼着又は融着され当該抵抗体35の
外表面35Ａは当接曲部の曲面に沿ってわん曲している。
この構成においては、低摩擦抵抗体35が貼着又は融着さ
れている支持体33は弾性体31により中吊りにされてい
て、この支持体33を介して低摩擦抵抗体35に感光体ベル
ト10( 図１）の撓みＸを発生する当接力が付与されてい
る。FIG. 3 shows the structure of a second embodiment of the supporting device 14 of the present invention shown in FIG. A ring-shaped elastic body made of urethane foam or the like (fixing force applying means) 31 fixed to the frame 30 is provided in a sticking groove 32 formed in the inner peripheral portion 31A of the elastic body 31, and is provided around the outer periphery of the support body 33 in a protruding manner. The tsuba 34 that has been stuck is adhered or fused. Similar to the first embodiment (FIG. 1), the joint surface 36 between the support 34 and the low frictional resistance body 35 such as ultra-high molecular weight polyethylene tape or the like and the support 33 is the photosensitive belt 10 (FIG. 1). Has a curved portion in the direction of rotation. This low friction resistor 35 is a support member at the joint surface 36.
The outer surface 35A of the resistor 35, which is adhered or fused to the curved surface of the curved portion of 33, is curved along the curved surface of the contact curved portion.
In this configuration, the support body 33 to which the low friction resistance body 35 is attached or fused is suspended by the elastic body 31, and the low friction resistance body 35 is attached to the photosensitive belt via the support body 33. An abutting force that causes a deflection X of 10 (FIG. 1) is applied.
【００１４】感光体ベルト10の回動に際し発生する当該
低摩擦抵抗体35の外表面35Ａとこのベルト10の裏面との
摺擦に伴う振動等の機械力を支持体33に伝達し、これを
当該弾性体31が吸収して、ベルト基板に凹凸（波打ち）
が発生するのを抑制する。これによりベルト基板への応
力集中を抑制する。Mechanical force such as vibration caused by sliding between the outer surface 35A of the low-friction resistor 35 and the back surface of the belt 10, which is generated when the photosensitive belt 10 is rotated, is transmitted to the support 33, and this is transmitted. Absorbed by the elastic body 31, the belt substrate has irregularities (wavy)
Suppress the occurrence of. This suppresses stress concentration on the belt substrate.
【００１５】[0015]
【発明の効果】以上のように本発明によれば、弾性体を
貼設した支持装置により感光体ベルトの張設路を偏位す
ることにより、露光位置精度の確保とともに波打ちを抑
制することができる。また、弾性体はベルトの回動と摺
動する支持装置への摺動に伴う機械振動を吸収するの
で、ベルト基板の凹凸（波打ち）の発生を抑制でき、こ
の抑制と、低摩擦抵抗体とベルト面との摺擦の際の摩擦
抵抗の低減との相乗効果によりベルト基板への応力集中
を避けることができる。As described above, according to the present invention, it is possible to secure the exposure position accuracy and suppress the corrugation by displacing the stretched path of the photosensitive belt by the support device to which the elastic body is attached. it can. Further, since the elastic body absorbs mechanical vibrations caused by the rotation of the belt and the sliding movement of the supporting device, it is possible to suppress the occurrence of unevenness (waviness) on the belt substrate. It is possible to avoid stress concentration on the belt substrate due to the synergistic effect of reducing the frictional resistance when rubbing against the belt surface.
【図１】本発明を適用した電子写真記録装置の主要構成
図。FIG. 1 is a main configuration diagram of an electrophotographic recording apparatus to which the present invention is applied.
【図２】本発明の支持装置の第１の実施例を示す図。FIG. 2 is a diagram showing a first embodiment of a supporting device of the present invention.
【図３】本発明の支持装置の第２の実施例を示す図。FIG. 3 is a view showing a second embodiment of the supporting device of the invention.
10…感光体ベルト、11、12…従動ローラ、13…駆動ロー
ラ、14…支持装置、15…帯電器、16…現像器、17…転写
器、18…クリーニング器、19…除電器、20、33…支持
体、21、31…弾性体、22、35…低摩擦抵抗体、30…フレ
ーム10 ... Photosensitive belt, 11, 12 ... Followed roller, 13 ... Drive roller, 14 ... Supporting device, 15 ... Charger, 16 ... Developing device, 17 ... Transfer device, 18 ... Cleaning device, 19 ... Static eliminator, 20, 33 ... Support, 21, 31 ... Elastic body, 22, 35 ... Low friction resistance body, 30 ... Frame
Claims (4)
光体を塗布した感光体ベルトの感光表面の光書込み位置
に対向する裏面に支持体を摺接した感光体ベルト支持装
置において、 前記支持体は、前記感光体ベルトの裏面と摺接する低摩
擦抵抗体と、フレームに固設され該低摩擦抵抗体を保持
する保持体と、前記低摩擦抵抗体と保持体との間に配置
されて前記低摩擦抵抗体と前記感光体ベルト裏面とが摺
動する際に前記低摩擦抵抗体に伝達される摺動に伴う機
械力を吸収する弾性体とを具備することを特徴とする感
光体ベルト支持装置。1. A photoreceptor belt support device comprising a seamless belt of a metal substrate, the surface of which is coated with an organic photoreceptor, and a support which is in sliding contact with the back surface of the photosensitive surface of the photosensitive belt, the back surface facing the optical writing position. The body is disposed between the low friction resistance body that is in sliding contact with the back surface of the photoreceptor belt, the holding body that is fixed to the frame and holds the low friction resistance body, and the low friction resistance body and the holding body. A photoconductor belt comprising: the low friction resistance body and an elastic body that absorbs mechanical force due to sliding transmitted to the low friction resistance body when the back surface of the photoconductor belt slides. Support device.
光体を塗布した感光体ベルトの感光表面の光書込み位置
に対向する裏面に支持体を摺接した感光体ベルト支持装
置において、 前記支持体は、前記感光体ベルト裏面と摺接する低摩擦
抵抗体と、フレームに固設されて前記低摩擦抵抗体と前
記ベルト裏面とが摺動する際に前記低摩擦抵抗体に伝達
される摺動に伴う機械力を吸収する弾性体と、前記低摩
擦抵抗体と前記弾性体との間に設けた保持体とを具備す
ることを特徴とする感光体ベルト支持装置。2. A photosensitive belt supporting device in which a support is slidably contacted to a back surface of a seamless surface of a metal substrate coated with an organic photosensitive material on the back surface of the photosensitive surface of the photosensitive belt, the surface facing the optical writing position. A body is a low friction resistance body that is in sliding contact with the back surface of the photoreceptor belt, and a sliding member that is fixed to the frame and is transmitted to the low friction resistance body when the low friction resistance body and the back surface of the belt slide. A photoreceptor belt support device, comprising: an elastic body that absorbs mechanical force associated with the above; and a holding body that is provided between the low friction resistance body and the elastic body.
光体を塗布した感光体ベルトの感光表面の光書込み位置
に対向する裏面に支持体を摺接した感光体ベルト支持装
置において、 前記支持体は、前記感光体ベルトの裏面と摺接する低摩
擦抵抗体と、当該ベルトが回動される際のベルトの張り
側における所定のベルトの撓みを発生させる当接力を前
記低摩擦抵抗体に付与する当接力付与手段とを具備する
ことを特徴とする感光体ベルト支持装置。3. A photosensitive belt supporting device in which a support is slidably contacted with a back surface of a seamless surface of a metal substrate coated with an organic photosensitive material on a back surface of a photosensitive surface of the photosensitive belt, which opposes an optical writing position. The body provides a low friction resistance body that is in sliding contact with the back surface of the photosensitive belt and a contact force that causes a predetermined belt bending on the tension side of the belt when the belt is rotated, to the low friction resistance body. And a contact force imparting means for operating the photosensitive belt.
発泡ウレタンとしたことを特徴とする請求項１、２又は
３記載の感光体ベルト支持装置。4. The photosensitive belt supporting device according to claim 1, wherein the elastic body and the contact force applying means are made of urethane foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14093392A JPH05313550A (en) | 1992-05-06 | 1992-05-06 | Photosensitive belt supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14093392A JPH05313550A (en) | 1992-05-06 | 1992-05-06 | Photosensitive belt supporting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05313550A true JPH05313550A (en) | 1993-11-26 |
Family
ID=15280197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14093392A Pending JPH05313550A (en) | 1992-05-06 | 1992-05-06 | Photosensitive belt supporting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05313550A (en) |
-
1992
- 1992-05-06 JP JP14093392A patent/JPH05313550A/en active Pending
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