JPS63261286A - Electrophotographic developing device - Google Patents
Electrophotographic developing deviceInfo
- Publication number
- JPS63261286A JPS63261286A JP62095756A JP9575687A JPS63261286A JP S63261286 A JPS63261286 A JP S63261286A JP 62095756 A JP62095756 A JP 62095756A JP 9575687 A JP9575687 A JP 9575687A JP S63261286 A JPS63261286 A JP S63261286A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- developing roller
- gap
- roller
- toner
- 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
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 description 9
- 108091008695 photoreceptors Proteins 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- -1 Kev-6-Ilar Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、像担持体とトナー担持体とを所定間隔離隔し
て配置し、トナー担持体によりその対峙位置まで導かれ
たトナーを、像担持体上に形成された露光画像に転移さ
せ、該露光画像を可視像化させる電子写真現像装置に関
する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides an image carrier and a toner carrier that are disposed at a predetermined distance from each other, and that the toner that has been guided by the toner carrier to a position where they face each other is transferred to the image carrier. The present invention relates to an electrophotographic developing device that transfers an exposed image formed on a carrier and visualizes the exposed image.
従来から複写機、プリンタ、ファクシミリ等に使用され
る電子写真現像装置にあっては、磁気刷子法や飛翔現像
法等いずれの方式においてもトナー担持体と像担持体間
を所定間隔精度よく離隔して配置することが良好な画像
形式を行うための条件として知られている。Conventionally, in electrophotographic developing devices used in copying machines, printers, facsimile machines, etc., whether using a magnetic brush method or a flying developing method, the toner carrier and the image carrier are separated by a predetermined distance with high accuracy. It is known that a good image format is achieved by arranging the image.
かかる目的のために本出願人は所定方向に周回可能な無
端状周回体を像担持体とトナー担持体の対峙位置におい
てトナー担持体と像担持体とに当接させ、両担持体間の
間隔規制を行うように構成した電子写真現像装置を提供
している。For this purpose, the present applicant brings an endless rotating body that can rotate in a predetermined direction into contact with the toner carrier and the image carrier at a position where the image carrier and the toner carrier face each other, and reduces the distance between the two carriers. The present invention provides an electrophotographic developing device configured to perform regulation.
（特願昭６ｌ−３０５３０１） かかる装置を第３図に従って説明する。(Patent application Sho 6l-305301) Such a device will be explained with reference to FIG.
感光体ドラム２１と所定間隔離間して設けられた現像ロ
ーラ２２間には無端状ベルト２３が現像ローラ２２及び
支持部材２４を周回してあり、該無端状ベルト２３によ
って感光体ドラム２１と現像ローラ２２の間隔規制が行
われる。該無端状ベルト２３は画像形成に影響のない現
像ローラ２２の両端において周設されている。Between the photoreceptor drum 21 and the developing roller 22 provided at a predetermined distance, an endless belt 23 is arranged around the developing roller 22 and a support member 24. 22 interval regulations are implemented. The endless belt 23 is provided around both ends of the developing roller 22, which does not affect image formation.
しかしながら、感光体ドラム２１と現像ローラ２２の間
隔は微小であるために、該間隔に設けられる無端状ベル
ト２３の厚みも同様に微小なものを用いることになり、
そのための強度を維持するだけの材質のものを選択しな
ければならず取付のための精度が要求される。However, since the distance between the photoreceptor drum 21 and the developing roller 22 is minute, the thickness of the endless belt 23 provided in the distance must be similarly minute.
The material must be selected to maintain its strength, and precision is required for installation.
本発明の目的はかかる課題に対し、無端状ベルトを用い
て像担持体とトナー担持体間の間隔を規制する装置にお
いて、精度よく間隔規制するとともに耐久性のある装置
を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve this problem by providing a device that uses an endless belt to regulate the distance between an image carrier and a toner carrier, and that is capable of accurately regulating the distance and is durable.
上記問題点を解決するために、本発明は、像担持体とト
ナー担持体とを所定間隔離隔して配置し、その対峙位置
において像担持体上に形成された露光画像にトナーを転
移させ、該露光画像の現像を ゛行う電子写真現像装置
において、所定方向に周回可能な無端状周回体を前記対
峙位置においてトナー担持体と像担持体とに当接させる
とともに、該無端状周回体に対し内側から張力を付与す
る部材を設けて電子写真現像装置を構成した。In order to solve the above-mentioned problems, the present invention arranges an image carrier and a toner carrier at a predetermined distance from each other, and transfers toner to an exposed image formed on the image carrier at opposing positions. In the electrophotographic developing device that develops the exposed image, an endless rotating body capable of rotating in a predetermined direction is brought into contact with the toner carrier and the image carrier at the facing position, and a An electrophotographic developing device was constructed by providing a member that applies tension from the inside.
本発明は上記の如く構成したので、間隔規制部材である
無端状ベルトに張力が付与されるので現像ローラに無端
状ベルトが張力をもって周回される。したがって、感光
体ドラムと現像ローラ間に無端状ベルトが精度よく位置
決めされることになる。Since the present invention is constructed as described above, tension is applied to the endless belt serving as the interval regulating member, so that the endless belt is rotated around the developing roller with tension. Therefore, the endless belt is accurately positioned between the photosensitive drum and the developing roller.
以下、図面を参照して本発明の詳細な説明する。 Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図は、本発明の実施例を示す電子写真現像装置の要
部概略断面図であり、第２図は現像装置軸端側の構成を
示す要部概略断面図である。FIG. 1 is a schematic cross-sectional view of the main parts of an electrophotographic developing device showing an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the main parts showing the configuration of the shaft end side of the developing device.
１は、感光体ドラム２周面上に、該ドラム２に対峙させ
て配置した電子写真現像装置で、感光体ドラム２と対峙
する側に容器開口部を設けたトナー容器３と、該容器開
口部３ａに回転可能に軸支された現像ローラ４と、前記
容器開口部３ａ上端位置に固定されその自由端側を現像
ローラ４周面＝３−
に接触させて配置したトナ一層厚規制ブレード５とから
構成される。1 is an electrophotographic developing device disposed on the circumferential surface of a photoreceptor drum 2 so as to face the drum 2, and includes a toner container 3 having a container opening on the side facing the photoreceptor drum 2; A developing roller 4 rotatably supported by the container opening 3a, and a toner thickness regulating blade 5 fixed at the upper end position of the container opening 3a with its free end in contact with the circumferential surface of the developing roller 4=3-. It consists of
現像ローラ４は、内部に固定磁石集成体６を内包する非
磁性スリーブ７とフランジ１２とから構成されており、
固定磁石集成体６の磁気力によりスリーブ７周面上に担
持させたトナーを該スリーブ７の回転により規制ブレー
ド５により穂切りしトナ一層厚を規制した後感光体ドラ
ム２表面に形成された露光画像にトナーを転移させ、所
定の現像が行われるよう構成している。The developing roller 4 is composed of a non-magnetic sleeve 7 containing a fixed magnet assembly 6 therein and a flange 12.
The toner carried on the circumferential surface of the sleeve 7 by the magnetic force of the fixed magnet assembly 6 is cut into ears by the regulation blade 5 as the sleeve 7 rotates to regulate the thickness of the toner, and then the exposure formed on the surface of the photoreceptor drum 2 is performed. The toner is transferred to the image and a predetermined development is performed.
トナー容器両側壁面□には突起８．９が形成されており
、該突起８、９に自由端側に湾曲部を有する板バネ部材
１０が矢印方向に張力を付与するように取り付けられて
いる。Protrusions 8.9 are formed on both side wall surfaces of the toner container, and a plate spring member 10 having a curved portion on the free end side is attached to the protrusions 8, 9 so as to apply tension in the direction of the arrow.
無端状ベルト１１は、仮バネ部材１０と現像ローラ４周
面間に感光体ドラム２との間隔規制を行うために掛は渡
されている。無端状ベルト１１の断面形状は第２図に示
すようにＬ字形となっており、現像ローラ４を構成する
スリーブ７の周面端部に形成した溝７ａに前記ベルト１
１の突起部１−５＝
１ａが係合することによりベルト１１と現像ローラ４と
の位置決めを行う。ベルト１１の形状はＬ字状となって
おり、ローラ４軸方向スリーブ７表面に周設される間隔
規制部１１ｂとローラ４への位置決めを行う突起部１１
ａとから構成されている。このときスリーブ７の溝７ａ
の深さを０．５ｍｍとし、該溝７ａに係合する突起部１
１ａの厚みを０．４ｍｍ 、間隔規制部１１ｂの厚みを
０．２ｍｍとすれば突起部１１ａと溝７ａとの係合にお
いて０．１ｍｍの逃げができるので突起部１１ａの端部
が溝７ａによって規制されることなくローラ４軸方向の
ズレのみが規制され、感光体ドラム２との間隔は間隔規
制部１１ｂの肉厚のみによって決定される。The endless belt 11 has a hook extending between the temporary spring member 10 and the circumferential surface of the developing roller 4 in order to regulate the distance from the photosensitive drum 2. The cross-sectional shape of the endless belt 11 is L-shaped as shown in FIG.
The belt 11 and the developing roller 4 are positioned by engagement of the projections 1-5=1a. The belt 11 has an L-shape, and includes an interval regulating part 11b provided around the surface of the sleeve 7 in the axial direction of the roller 4 and a protrusion 11 for positioning the belt 11 to the roller 4.
It is composed of a. At this time, the groove 7a of the sleeve 7
The depth of the groove 7a is 0.5 mm, and the protrusion 1 engages with the groove 7a.
If the thickness of the projection 11a is 0.4 mm and the thickness of the spacing regulating portion 11b is 0.2 mm, a clearance of 0.1 mm can be obtained when the projection 11a and the groove 7a are engaged. Only the deviation in the 4-axis direction of the roller is regulated without being restricted, and the distance from the photosensitive drum 2 is determined only by the thickness of the distance regulating portion 11b.
ベルト１１の保合を行う突起部１１ａを図のように内側
に形成してスリーブ７に係合させることにより、スリー
ブ７の駆動ギア１３等のかみ合いによりベルト１１に対
する力が加わってもベルト１１が変形することはない。By forming the protrusion 11a that holds the belt 11 on the inside as shown in the figure and engaging it with the sleeve 7, the belt 11 can be prevented even if force is applied to the belt 11 due to engagement of the drive gear 13, etc. of the sleeve 7. It will not be deformed.
無端状ベルト１１の材質は例えばポリアセクール、ナイ
ロン、ポリカーボ、ウレタンゴム、ケブ６一
ラー、ポリエステル、カプトン等を用いる。The endless belt 11 may be made of, for example, polyacecool, nylon, polycarbonate, urethane rubber, Kev-6-Ilar, polyester, Kapton, or the like.
かかる実施例によれば、現像ローラ４周面に無端状ベル
）１１が精度よく位置決めされるとともに、ベルト１１
の内側に設けられ、ベルト１１外側方向へ張力を付与す
る板バネ部材１０によりベルト１１に対するバックテン
ションが与えられるので装置使用時におけるベルト１１
の位置ずれや緩みが生じることなく安定した間隔規制が
可能となる。According to this embodiment, the endless belt 11 is positioned on the circumferential surface of the developing roller 4 with high precision, and the belt 11 is
Back tension is applied to the belt 11 by a leaf spring member 10 provided inside the belt 11 and applying tension to the outside of the belt 11.
Stable spacing regulation is possible without positional deviation or loosening.
また、ベルト１１の形状が周薄の間隔規制部１１ｂと肉
厚の位置決め用突起部１１ａとから成り、該突起部１１
ａによってローラ４への取り付け、位置決めが行われる
ので、ベルト１１全体としての強度が向上し、耐久性も
向上する。また突起１１ａの形成によってパリ処理がし
易くなり加工も容易になる。Further, the shape of the belt 11 is composed of a spacing regulating portion 11b with a thin circumference and a thick positioning protrusion 11a, and the protrusion 11
Since attachment and positioning to the roller 4 are performed by a, the strength of the belt 11 as a whole is improved and its durability is also improved. Further, the formation of the protrusions 11a facilitates the paring process and facilitates processing.
以上記載した如く本発明によれば、像担持体との間隔規
制を行う無端状ベルトを現像ローラに周回させるととも
に、内側から該ベルトに張力を付与する部材を設けたの
で、常に安定したベルトの周設が可能となる。As described above, according to the present invention, the endless belt that regulates the distance between the image carrier and the developing roller is wound around the developing roller, and a member that applies tension to the belt from the inside is provided, so that the belt is always stable. Peripheral installation is possible.
またベルトの形状をＬ字形とし、現像ローラ周面に係合
する構造としたので、ベルトのずれも防止されるととも
に、間隔規制部の厚みもベルトの強度からさほど影響を
受けることなく設定することが可能となるので、ベルト
使用による間隔規制方法がより精度よく安定して行うこ
とができる。Furthermore, since the belt is L-shaped and has a structure that engages with the peripheral surface of the developing roller, it is possible to prevent the belt from slipping, and the thickness of the interval regulating portion can be set without being significantly influenced by the strength of the belt. Therefore, the interval regulation method using a belt can be performed more accurately and stably.
第１図は本発明の実施例を示す電子写真現像装置の要部
概略断面図であり、第２図は現像装置軸端側の構成を示
す要部概略断面図である。
第３図は先願に係る電子写真現像装置を示す要部概略断
面図である。
４・・・現像ローラ １０・・・板バネ部材１１・・
・無端状ベルトFIG. 1 is a schematic cross-sectional view of the main parts of an electrophotographic developing device showing an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the main parts showing the configuration of the shaft end side of the developing device. FIG. 3 is a schematic sectional view of the main parts of the electrophotographic developing device according to the prior application. 4... Developing roller 10... Leaf spring member 11...
・Endless belt
Claims (1)
その対峙位置において像担持体上に形成された露光画像
にトナーを転移させ、該露光画像の現像を行う電子写真
現像装置において、所定方向に周回可能な無端状周回体
を前記対峙位置においてトナー担持体と像担持体とに当
接させるとともに、該無端状周回体に対し内側から張力
を付与する部材を設けたことを特徴とする電子写真現像
装置。The image carrier and the toner carrier are arranged at a predetermined distance apart,
In an electrophotographic developing device that transfers toner to an exposed image formed on an image carrier at the facing position and develops the exposed image, an endless rotating body capable of rotating in a predetermined direction carries toner at the facing position. 1. An electrophotographic developing device, comprising: a member that is brought into contact with the body and the image carrier, and that applies tension to the endless rotating body from the inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62095756A JPS63261286A (en) | 1987-04-17 | 1987-04-17 | Electrophotographic developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62095756A JPS63261286A (en) | 1987-04-17 | 1987-04-17 | Electrophotographic developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63261286A true JPS63261286A (en) | 1988-10-27 |
Family
ID=14146339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62095756A Pending JPS63261286A (en) | 1987-04-17 | 1987-04-17 | Electrophotographic developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63261286A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116078810A (en) * | 2023-02-17 | 2023-05-09 | 科城精铜(广州)有限公司 | Rolling device and method for improving tensile strength of copper rod |
-
1987
- 1987-04-17 JP JP62095756A patent/JPS63261286A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116078810A (en) * | 2023-02-17 | 2023-05-09 | 科城精铜(广州)有限公司 | Rolling device and method for improving tensile strength of copper rod |
| CN116078810B (en) * | 2023-02-17 | 2023-11-07 | 科城精铜(广州)有限公司 | Rolling device and method for improving tensile strength of copper rod |
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