JPH0981001A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH0981001A JPH0981001A JP25675595A JP25675595A JPH0981001A JP H0981001 A JPH0981001 A JP H0981001A JP 25675595 A JP25675595 A JP 25675595A JP 25675595 A JP25675595 A JP 25675595A JP H0981001 A JPH0981001 A JP H0981001A
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- forming apparatus
- imparting agent
- photoconductor
- coating
- 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
- Cleaning In Electrography (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複写機、プリン
タ、ファクシミリ等の電子写真方式を用いた画像形成装
置に関し、特に感光体表面のクリーニング技術に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic image forming apparatus such as a copying machine, a printer, and a facsimile, and more particularly to a technique for cleaning the surface of a photoconductor.
【０００２】[0002]
【従来の技術】感光体周囲に、その電子写真プロセス順
に、帯電器、露光器、現像器、転写・分離器、クリーニ
ング器、除電器などを配置した画像形成装置において、
クリーニング器としては、ウレタンゴムのエッジを圧接
してトナーをかき落とすブレードクリーニング方式や、
毛ブラシを用いたファーブラシクリーニング方式などが
ある。特にブレードクリーニング方式は、機械的に簡単
であり安価であるため、広く利用されている。2. Description of the Related Art In an image forming apparatus in which a charging device, an exposing device, a developing device, a transferring / separating device, a cleaning device, a static eliminator and the like are arranged around a photoconductor in the order of the electrophotographic process,
As a cleaning device, a blade cleaning method that presses the edge of urethane rubber to scrape off the toner,
There is a fur brush cleaning method using a bristle brush. In particular, the blade cleaning method is widely used because it is mechanically simple and inexpensive.
【０００３】ところが、微小トナーや熱・圧力等で溶融
したトナーが、感光体や中間転写体に付着した場合、ブ
レードだけでは除去し切れず、徐々にフィルミング層を
形成するため、転写性能が低下し、画像品質が悪くなっ
たり、ブレードと感光体の摩擦係数が増加するため、カ
ウンターブレード方式（ブレード面と、ブレード先端の
感光体当接点と、感光体の回転方向下流側面とのなす角
度が鋭角）を用いる場合に、ブレードの巻き込みが発生
しやすくなるなどの欠点があった。However, when the fine toner or the toner melted by heat or pressure adheres to the photosensitive member or the intermediate transfer member, it cannot be completely removed by the blade alone, and the filming layer is gradually formed. Counter blade method (the angle between the blade surface, the contact point of the blade at the end of the photosensitive member, and the downstream side surface in the rotating direction of the photosensitive member) because the image quality deteriorates and the friction coefficient between the blade and the photosensitive member increases. However, there is a defect that the blade is apt to be caught when using a sharp angle.
【０００４】これらの欠点に対して、特開昭５７−１７
９７３号公報では、潤滑性付与剤を感光体表面上に塗布
している。即ち、上記公報には、固形化した潤滑性付与
剤をファーブラシ等により削り取り、感光体表面上に塗
布する方式が示されている。With respect to these drawbacks, JP-A-57-17
In 973, a lubricity-imparting agent is applied on the surface of the photoconductor. That is, the above publication discloses a method in which a solidified lubricity-imparting agent is scraped off with a fur brush or the like and applied onto the surface of the photoconductor.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記従
来技術においては、潤滑性付与剤は本来粉体であるにも
係わらず、それを固形化して使用しているため、粉体の
ものに対して大幅なコストアップとなってしまう欠点が
あった。また、固形化した潤滑性付与剤は脆いため、輸
送途中に、欠け、割れが発生してしまうなどの問題もあ
った。However, in the above-mentioned prior art, since the lubricity-imparting agent is powdered originally, it is solidified and used. There was a drawback that it resulted in a significant cost increase. Further, since the solidified lubricity-imparting agent is brittle, there is a problem that chips and cracks are generated during transportation.
【０００６】本発明は、このような背景に基づいてなさ
れたものであり、その目的は、粉体状の潤滑性付与剤を
使用することにより、コストダウンを図り、輸送途中の
欠け、割れを無くすことができる画像形成装置を提供す
ることにある。The present invention has been made on the basis of such a background, and an object thereof is to use a powdery lubricity-imparting agent to reduce costs and to prevent chips and cracks during transportation. An object is to provide an image forming apparatus that can be eliminated.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに、請求項１記載の発明は、電子写真プロセスを有
し、転写・分離後の残留トナーを感光体より除去するク
リーニング器の、感光体回転方向下流側に、感光体上に
潤滑性付与剤を塗布するための塗布装置を配置した画像
形成装置において、前記塗布装置は、粉体状の潤滑性付
与剤を内蔵し、この潤滑性付与剤を外表面に移動させ得
る塗布ローラを備えたことを特徴とする。In order to achieve the above object, the invention according to claim 1 has a cleaning device which has an electrophotographic process and removes residual toner after transfer / separation from a photoreceptor. In an image forming apparatus in which a coating device for coating a lubricity imparting agent on the photoconductor is arranged on the downstream side in the rotation direction of the photoconductor, the coating device incorporates a powdery lubricity imparting agent. It is characterized in that it is provided with a coating roller capable of moving the property imparting agent to the outer surface.
【０００８】また請求項２記載の発明は、上記におい
て、前記塗布ローラを、表面に多数の微小開口を設け、
内部に潤滑性付与剤を収納した芯金と、この芯金の外周
面に所定の厚みを以て設けられた発泡部材とから構成し
たことを特徴とする。According to a second aspect of the present invention, in the above, the coating roller is provided with a large number of minute openings on its surface.
It is characterized by comprising a cored bar containing a lubricity imparting agent inside, and a foamed member provided on the outer peripheral surface of the cored bar with a predetermined thickness.
【０００９】また請求項３記載の発明は、上記におい
て、前記発泡部材は、内側の高発泡部材と、外側の低発
泡部材の２層構造としたことを特徴とする。Further, the invention according to claim 3 is characterized in that, in the above, the foaming member has a two-layer structure of an inside high foaming member and an outside low foaming member.
【００１０】また請求項４記載の発明は、請求項１記載
の発明において、前記塗布ローラの軸方向外周面に接触
するように、可撓性の弾性部材を設けたことを特徴とす
る。The invention according to claim 4 is characterized in that, in the invention according to claim 1, a flexible elastic member is provided so as to come into contact with the outer peripheral surface in the axial direction of the coating roller.
【００１１】また請求項５記載の発明は、請求項１記載
の発明において、前記塗布ローラの表面材質を、感光体
の材質より潤滑性付与剤に対して離型性の良いものに設
定したことを特徴とする。According to a fifth aspect of the present invention, in the first aspect of the invention, the surface material of the coating roller is set to have better releasability from the lubricity imparting agent than the material of the photoconductor. Is characterized by.
【００１２】感光体上に潤滑性付与剤を塗布するための
塗布ローラは、表面に多数の微小開口を設け、内部に潤
滑性付与剤を収納した芯金と、この芯金の外周面に所定
の厚みを以て設けられた発泡部材とから構成されてお
り、芯金中の粉体状の潤滑性付与剤は、塗布ローラが回
転すると、その微小開口から外部に流出し、発泡部材内
に浸透していき、やがてその表面に到達する。The coating roller for coating the lubricity imparting agent on the photosensitive member is provided with a large number of fine openings on the surface thereof, and a core metal containing the lubricity imparting agent inside and a predetermined outer peripheral surface of the core metal. When the coating roller rotates, the powdery lubricity-imparting agent in the core metal flows out from the minute opening and penetrates into the foaming member. It eventually reaches its surface.
【００１３】ここで、発泡部材の外表面に到達した潤滑
性付与剤は、マイラなどで構成される弾性部材で均一に
され、感光体に塗布される。Here, the lubricity imparting agent that has reached the outer surface of the foamed member is made uniform by an elastic member composed of Mylar or the like, and is applied to the photoreceptor.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照しながら説明する。図１は本発明に係る画像形成
装置の感光体周りの一実施の形態を示す構成図である。
感光体１の周囲には、作像プロセス順に、帯電器２、非
画像領域をイレースするイレーサ３、露光系Ｌ、現像器
４、転写・分離器５、クリーニング器６、感光体１上に
潤滑性付与剤を塗布するための塗布装置７、除電器８が
配置されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment around a photoconductor of an image forming apparatus according to the present invention.
Around the photoconductor 1, a charger 2, an eraser 3 for erasing the non-image area, an exposure system L, a developing device 4, a transfer / separator 5, a cleaning device 6, and a photoconductor 1 are lubricated in the order of the image forming process. A coating device 7 and a static eliminator 8 for coating the property imparting agent are arranged.
【００１５】このような構成において、周知のごとく、
帯電、露光、現像の各プロセスを経て、トナー画像が感
光体１上に形成され、この画像が転写・分離部で図示し
ない給紙部から送られた用紙に転写される。画像が転写
された感光体１の表面は、クリーニングされ、さらに塗
布装置７により潤滑性付与剤が塗布され、最後に除電さ
れる。In such a configuration, as is well known,
Through each process of charging, exposure, and development, a toner image is formed on the photoconductor 1, and this image is transferred to the paper sent from a paper feeding unit (not shown) at the transfer / separation unit. The surface of the photoconductor 1 on which the image has been transferred is cleaned, a lubricity imparting agent is applied by the application device 7, and finally the charge is removed.
【００１６】図２は塗布装置７が潤滑性付与剤を感光体
１の表面に塗布する様子を示す構成図、図３は塗布装置
７が有する塗布ローラの構成図である。FIG. 2 is a block diagram showing how the coating device 7 coats the lubricity imparting agent on the surface of the photoreceptor 1, and FIG. 3 is a block diagram of the coating roller of the coating device 7.
【００１７】図２に示すように、塗布装置７は、潤滑性
付与剤としてのステアリン酸亜鉛１２を内蔵する塗布ロ
ーラ１１と、この塗布ローラ１１の外周面の軸方向（図
の鉛直方向）全域に亘って塗布ローラ１１と接触する厚
さ１００μｍ程度のマイラ１３とを備えている。As shown in FIG. 2, the coating device 7 includes a coating roller 11 containing zinc stearate 12 as a lubricity imparting agent, and the entire outer peripheral surface of the coating roller 11 in the axial direction (vertical direction in the figure). And a mylar 13 having a thickness of about 100 μm that is in contact with the coating roller 11.
【００１８】また、塗布ローラ１１は、図３にも明確に
示すように、ステアリン酸亜鉛１２を内蔵する中空で直
径２〜３ｍｍの穴（微小開口）を多数設けた芯金１１ａ
と、この芯金１１ａの外周面に設けた、圧力損失１ｎｍ
Ｈ2 Ｏ程度の第１の発泡部材１１ｂと、この第１の発泡
部材１１ｂの外周面にさらに設けた、圧力損失１０ｎｍ
Ｈ2 Ｏ程度の第２の発泡部材１１ｃとで構成されてお
り、第２の発泡部材１１ｃの表面をテフロン等でコーテ
ィングして感光体１の表面よりもステアリン酸亜鉛１２
の離型性を良くしている。Further, as clearly shown in FIG. 3, the coating roller 11 has a cored bar 11a in which a large number of hollow holes (fine openings) having a diameter of 2 to 3 mm, which contain zinc stearate 12, are provided.
And a pressure loss of 1 nm provided on the outer peripheral surface of the core metal 11a.
A first foamed member 11b of about H 2 O and a pressure loss of 10 nm further provided on the outer peripheral surface of the first foamed member 11b.
The second foaming member 11c is made of H 2 O, and the surface of the second foaming member 11c is coated with Teflon or the like to form zinc stearate 12 more than the surface of the photoreceptor 1.
The mold releasability of is improved.
【００１９】本実施の形態では、ステアリン酸亜鉛１２
を円滑に発泡体に浸透させることと、感光体１上にむら
なく塗布するために、内側の第１の発泡部材１１ｂを高
発泡部材とし、外側の第２の発泡部材１１ｃを低発泡部
材としたが、外側の第２の発泡部材１１ｃの代わりに布
地などを用いてもよい。さらに芯金１１ａを発泡部材に
してもよい。In the present embodiment, zinc stearate 12
In order to smoothly permeate into the foam and to apply it evenly on the photoreceptor 1, the inner first foam member 11b is a high foam member and the outer second foam member 11c is a low foam member. However, cloth or the like may be used instead of the outer second foam member 11c. Further, the core metal 11a may be a foam member.
【００２０】なお、本実施の形態では、感光体１に塗布
ローラ１１を常に当接させているが、接離動作を行わせ
てもよい。In this embodiment, the coating roller 11 is always in contact with the photoconductor 1, but the contacting / separating operation may be performed.
【００２１】次に、塗布装置７によるステアリン酸亜鉛
１２の塗布動作について説明する。塗布ローラ１１は、
図示しないモータにより図２において矢印方向（反時計
回り方向）に回転するようになっている。ステアリン酸
亜鉛１２は、塗布ローラ１１が回転することにより、芯
金１１ａに設けた直径２〜３ｍｍの穴を通じて第１の発
泡部材１１ｂ内に浸透していく。さらに浸透したステア
リン酸亜鉛１２は、第２の発泡部材１１ｃに浸透して、
塗布ローラ１１の表面に到達する。塗布ローラ１１表面
に到達したステアリン酸亜鉛１２は、マイラ１３により
均一にされ、塗布ローラ１１と感光体１との接触位置で
感光体１に塗布される（図２参照）。Next, the coating operation of the zinc stearate 12 by the coating device 7 will be described. The coating roller 11 is
A motor (not shown) rotates in the arrow direction (counterclockwise direction) in FIG. The zinc stearate 12 permeates into the first foaming member 11b through a hole having a diameter of 2 to 3 mm provided in the cored bar 11a as the applying roller 11 rotates. The further penetrated zinc stearate 12 penetrates into the second foam member 11c,
The surface of the coating roller 11 is reached. The zinc stearate 12 that has reached the surface of the application roller 11 is made uniform by the mylar 13 and applied to the photoconductor 1 at the contact position between the application roller 11 and the photoconductor 1 (see FIG. 2).
【００２２】[0022]
【発明の効果】請求項１記載の発明によれば、粉体状の
潤滑性付与剤を使用するので、コストダウンを図り、欠
け、割れの発生を未然に防止することができる。According to the first aspect of the present invention, since the powdery lubricity-imparting agent is used, it is possible to reduce the cost and prevent the occurrence of chips and cracks.
【００２３】請求項２記載の発明によれば、塗布ローラ
の外周部は、発泡部材で構成されており、弾力性を有す
るので、感光体表面に均一に効率よく潤滑性付与剤を塗
布することができる。According to the second aspect of the present invention, since the outer peripheral portion of the coating roller is made of a foaming member and has elasticity, it is possible to coat the surface of the photoconductor with the lubricity imparting agent uniformly and efficiently. You can
【００２４】請求項３及び４記載の発明によれば、潤滑
性付与剤を発泡部材内で円滑に浸透させ、かつその外表
面において均一にすることで、潤滑性付与剤の供給量が
コントロールされ、上記と同様に、均一にかつ効率よく
感光体上に塗布することができる。According to the third and fourth aspects of the present invention, the lubricity-imparting agent is smoothly permeated into the foamed member and the outer surface thereof is made uniform to control the supply amount of the lubricity-imparting agent. In the same manner as described above, it is possible to coat the photosensitive member uniformly and efficiently.
【００２５】請求項５記載の発明によれば、少なくとも
塗布ローラ表面の材質を感光体の表面よりも潤滑性付与
剤の離型性の良いものとしているので、塗布ローラ表面
に付着した潤滑性付与剤をむらなく感光体表面に付着さ
せることができる。According to the fifth aspect of the present invention, at least the surface of the coating roller is made of a material having a better releasing property of the lubricity imparting agent than the surface of the photoconductor, so that the lubricity imparted to the surface of the coating roller is imparted. The agent can be evenly attached to the surface of the photoreceptor.
【図１】本発明に係る画像形成装置の感光体周りの一実
施の形態を示す構成図である。FIG. 1 is a configuration diagram showing an embodiment around a photoconductor of an image forming apparatus according to the present invention.
【図２】塗布装置が潤滑性付与剤を感光体の表面に塗布
する様子を示す構成図である。FIG. 2 is a configuration diagram showing how a coating device coats a lubricity imparting agent on the surface of a photoconductor.
【図３】塗布装置が有する塗布ローラの構成図である。FIG. 3 is a configuration diagram of an application roller included in the application device.
１ 感光体 ７ 塗布装置 １１ 塗布ローラ １１ａ 芯金 １１ｂ 第１の発泡部材 １１ｃ 第２の発泡部材 １２ ステアリン酸亜鉛（潤滑性付与剤） １３ マイラ（弾性部材） DESCRIPTION OF SYMBOLS 1 Photoconductor 7 Coating device 11 Coating roller 11a Core metal 11b 1st foaming member 11c 2nd foaming member 12 Zinc stearate (lubricity imparting agent) 13 Myra (elastic member)
Claims (5)
の残留トナーを感光体より除去するクリーニング器の、
感光体回転方向下流側に、感光体上に潤滑性付与剤を塗
布するための塗布装置を配置した画像形成装置におい
て、 前記塗布装置は、粉体状の潤滑性付与剤を内蔵し、この
潤滑性付与剤を外表面に移動させ得る塗布ローラを備え
たことを特徴とする画像形成装置。1. A cleaning device having an electrophotographic process for removing residual toner from a photoconductor after transfer and separation,
In an image forming apparatus in which a coating device for coating a lubricity imparting agent on the photoconductor is arranged on the downstream side in the rotation direction of the photoconductor, the coating device incorporates a powdery lubricity imparting agent. An image forming apparatus comprising an application roller capable of moving a property imparting agent to an outer surface.
前記塗布ローラを、表面に多数の微小開口を設け、内部
に潤滑性付与剤を収納した芯金と、この芯金の外周面に
所定の厚みを以て設けられた発泡部材とから構成したこ
とを特徴とする画像形成装置。2. The image forming apparatus according to claim 1, wherein
The coating roller is composed of a cored bar having a large number of fine openings on the surface thereof and containing a lubricity imparting agent therein, and a foaming member provided on the outer peripheral surface of the cored bar with a predetermined thickness. Image forming apparatus.
前記発泡部材は、内側の高発泡部材と、外側の低発泡部
材の２層構造としたことを特徴とする画像形成装置。3. The image forming apparatus according to claim 2,
The image forming apparatus is characterized in that the foam member has a two-layer structure of an inside high foam member and an outside low foam member.
前記塗布ローラの軸方向外周面に接触するように、可撓
性の弾性部材を設けたことを特徴とする画像形成装置。4. The image forming apparatus according to claim 1, wherein
An image forming apparatus, wherein a flexible elastic member is provided so as to come into contact with an outer peripheral surface of the coating roller in the axial direction.
前記塗布ローラの表面材質を、感光体の材質より潤滑性
付与剤に対して離型性の良いものに設定したことを特徴
とする画像形成装置。5. The image forming apparatus according to claim 1,
An image forming apparatus characterized in that the surface material of the coating roller is set to have a better releasability for the lubricity imparting agent than the material of the photoconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25675595A JPH0981001A (en) | 1995-09-09 | 1995-09-09 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25675595A JPH0981001A (en) | 1995-09-09 | 1995-09-09 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0981001A true JPH0981001A (en) | 1997-03-28 |
Family
ID=17297000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25675595A Pending JPH0981001A (en) | 1995-09-09 | 1995-09-09 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0981001A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6118964A (en) * | 1997-12-10 | 2000-09-12 | Ricoh Company, Ltd. | Multi-functional contact-type charging unit and image transfer unit |
| US6661985B2 (en) | 2001-03-05 | 2003-12-09 | Ricoh Company, Limited | Electrophotographic image bearer, process cartridge and image forming apparatus using the image bearer |
| JP2012032720A (en) * | 2010-08-02 | 2012-02-16 | Ricoh Co Ltd | Developing device and image forming apparatus |
-
1995
- 1995-09-09 JP JP25675595A patent/JPH0981001A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6118964A (en) * | 1997-12-10 | 2000-09-12 | Ricoh Company, Ltd. | Multi-functional contact-type charging unit and image transfer unit |
| US6661985B2 (en) | 2001-03-05 | 2003-12-09 | Ricoh Company, Limited | Electrophotographic image bearer, process cartridge and image forming apparatus using the image bearer |
| JP2012032720A (en) * | 2010-08-02 | 2012-02-16 | Ricoh Co Ltd | Developing device and image forming apparatus |
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