JPS6249385A - Aligning mechanism for magnet roller in developing device - Google Patents
Aligning mechanism for magnet roller in developing deviceInfo
- Publication number
- JPS6249385A JPS6249385A JP18839085A JP18839085A JPS6249385A JP S6249385 A JPS6249385 A JP S6249385A JP 18839085 A JP18839085 A JP 18839085A JP 18839085 A JP18839085 A JP 18839085A JP S6249385 A JPS6249385 A JP S6249385A
- Authority
- JP
- Japan
- Prior art keywords
- bush
- magnet roller
- gap
- developing device
- flange
- 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
- Magnetic Brush Developing In Electrophotography (AREA)
- Developing For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術的分野〕
本発明は、電子複写機等に用いられる現像器におけるマ
グネットローラの調心機構に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an alignment mechanism for a magnet roller in a developing device used in an electronic copying machine or the like.
電子複写別等に用いられる現像器は、感光体ドラムに回
転可能に摺接するマグネットローラを備え、マグネット
ローラを介して感光体ドラムにトナーを供給し、感光体
ドラム表面に形成された静電潜像に応じた像を転写する
ようにしている。A developing device used for electronic copying, etc. is equipped with a magnetic roller that rotatably slides into contact with a photoreceptor drum, and supplies toner to the photoreceptor drum via the magnet roller, dissolving the electrostatic latent formed on the surface of the photoreceptor drum. The image is transferred according to the image.
このため、感光体ドラムとマグネットローラ間のギャッ
プおよび平行度はｌｉ度よく設定しなりればならない。Therefore, the gap and parallelism between the photosensitive drum and the magnet roller must be set to a good degree.
これら精度は従来では個々の部品の加工精度および組立
精度に頼っており、後の調整は出来なかった。Conventionally, these precisions depended on the processing precision and assembly precision of individual parts, and subsequent adjustments were not possible.
したがって、個々の部品精度のバラツキにより製品不良
が出来る恐れがあり、その分寸法管理を厳密に要求され
、効果となっていた。Therefore, there is a risk that product defects may occur due to variations in the accuracy of individual parts, which requires strict dimensional control, which is ineffective.
本考案は、以上の問題点に鑑みなされたものであって、
個々の部品の加工公差１組立公差を大きく取ってもギャ
ップおよび平行度を精度よく設定して、部品の安定化と
、価格の低減を同時に達成することを目的とする。This invention was created in view of the above problems,
The purpose of this invention is to simultaneously achieve stabilization of parts and cost reduction by accurately setting gaps and parallelism even if the assembly tolerances of individual parts are large.
前記目的を達成すみるため、本発明では、感光体ドラム
に回転可能に摺接するマグネットローラと、マグネット
ローラの回転中心軸を軸受Ｉプづるブツシュと、ブツシ
ュを支持するブラケットからなっていて、ブラケットに
ブツシュを偏心回転可能に固定したことを特徴とする。In order to achieve the above object, the present invention includes a magnet roller that rotatably slides on the photosensitive drum, a bushing that supports the rotation center shaft of the magnet roller, and a bracket that supports the bushing. It is characterized in that the bushing is fixed so as to be eccentrically rotatable.
（発明の実施例〕
以下、本発明の一実施例を図面を用いて詳細に説明する
。(Embodiment of the Invention) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
第１図は本発明を適用した現像器の側断面図、第２図は
マグネットローラと感光体ドラムとの関係を示Ｊ斜祝図
、第３図伝）、■は調整状態の説明図である。Figure 1 is a side sectional view of a developing device to which the present invention is applied, Figure 2 is a diagram showing the relationship between the magnet roller and the photoreceptor drum (see Figure 3), and ■ is an explanatory diagram of the adjusted state. be.
図において、１は感光体ドラム、２．３は感光体ドラム
１の周囲に配置された２成分現像器を構成する第１．第
２の現像器である。In the figure, 1 is a photoreceptor drum, and 2.3 is a first . This is the second developing device.
各現像器は２，３はケーシング４，５と、ケーシング４
．５の開口部に配とされたマグネットローラ６．７を備
え、各マグネットローラ６．７の周面を感光体ドラム１
の周面に対向配置している。Each developing device has casings 4, 5 and casing 4.
．． The peripheral surface of each magnet roller 6.7 is connected to the photoreceptor drum 1.
are arranged opposite to the circumferential surface of the
各マグネットローラ６．７の中心軸６ａ、７ａはケーシ
ング４，５の両側部に配置された共通のブラケット８に
回転可能に支持されている。The central shafts 6a, 7a of each magnet roller 6.7 are rotatably supported by a common bracket 8 disposed on both sides of the casings 4, 5.
そして、マグネットロ−ラ６の中心軸６ａは各ブラケッ
ト８の上部に固定された固定式ブツシュ９に軸受けされ
、またマグネットロー５７の中心軸７ａは各ブラケット
８の下部に固崇された可動式ブツシュ１０に軸受されて
いる。The center shaft 6a of the magnet roller 6 is supported by a fixed bush 9 fixed to the top of each bracket 8, and the center shaft 7a of the magnet roller 57 is a movable bush 9 fixed to the bottom of each bracket 8. It is supported by a bushing 10.
可動式ブツシュ１０は、扇形のフランジ１１と、フラン
ジ１１に突設された軸受スリーブ１２と、７ランジ１１
に開口形成された一対の偏心ガイド溝１３とからまって
いて、各ガイド溝１３に固定用ネジ１４を挿通し、ブラ
ケット８にネジ込むことでブツシュ１０をブラケット８
に固定している。The movable bushing 10 includes a fan-shaped flange 11, a bearing sleeve 12 protruding from the flange 11, and seven flange 11.
By inserting fixing screws 14 into each guide groove 13 and screwing them into the bracket 8, the bush 10 is attached to the bracket 8.
It is fixed at
各ガイド溝１３は軸受スリーブ１２の中心から反時計方
向に広がる渦状の軌跡に沿って形成されている。Each guide groove 13 is formed along a spiral trajectory that spreads counterclockwise from the center of the bearing sleeve 12.
したがって、ネジ１４を緩め、ガイド溝１３に沿ってブ
ツシュ１０を反時計方向に廻すと第３図０）に示す如く
感光体ドラム１とマグネットローラ７間のギャップｄは
広がり、また時計方向に廻すと第３図（ｂ）に示１如く
ギャップｄは狭くなる。Therefore, when the screw 14 is loosened and the bushing 10 is turned counterclockwise along the guide groove 13, the gap d between the photosensitive drum 1 and the magnet roller 7 widens as shown in FIG. As shown in FIG. 3(b), the gap d becomes narrower.
そして、ブツシュ１０は回転中心軸７ａの両側にあるの
で両者の調整により最も適したギャップおよび平行度に
調定できるのである。Since the bushings 10 are located on both sides of the rotation center axis 7a, the most suitable gap and parallelism can be achieved by adjusting both.
なお、実施例では上部側ローラ６の回転中心軸６ａを固
定式ブツシュ９に軸受しており、ここで、は前述の如き
調整作業を不用としているが、前述の゛可動式ブツシュ
１０を用いて調整可能としてもにい。In the embodiment, the rotation center shaft 6a of the upper roller 6 is supported by a fixed bushing 9, which eliminates the need for the above-mentioned adjustment work. Even if it's adjustable it's ugly.
以上実施例にＪ：り詳細に説明したように、本発明にあ
っては、感光体ドラムとマグネットローラ間のギャップ
および平行度を部品Ｖｉ度のみでなく後の調整により設
定できるため、品質が安定する。As described above in detail in the embodiments, in the present invention, the gap and parallelism between the photoreceptor drum and the magnet roller can be set not only by the component Vi degree but also by later adjustment, so that the quality can be improved. Stabilize.
また、個々の部品の寸法公差および組立時の、公差を広
く取ることができるため、安価に提供できる。In addition, since the dimensional tolerances of individual parts and the tolerances during assembly can be widened, it can be provided at low cost.
第１図は本発明を適用した現像器の側断面図、第２図は
マグネットローラと感光体ドラムとの関係を示す斜視図
、第３図（ａ）、（ｂ）は調整状態の説明図である。
１・・・感光体ドラム
３・・・第２の現像器
７・・・マグネットローラ、７ａ・・・回転中心軸８・
・・ブラケット
１０・・・可動式ブツシュ
１３・・・偏心ガイド溝Fig. 1 is a side sectional view of a developing device to which the present invention is applied, Fig. 2 is a perspective view showing the relationship between the magnet roller and the photosensitive drum, and Figs. 3 (a) and (b) are explanatory diagrams of the adjusted state. It is. DESCRIPTION OF SYMBOLS 1... Photosensitive drum 3... Second developing device 7... Magnet roller, 7a... Rotation center shaft 8...
... Bracket 10 ... Movable bush 13 ... Eccentric guide groove
Claims (1)
、マグネットローラの回転中心軸を軸受するブッシュと
、ブッシュを支持するブラケットとからなっていて、ブ
ラケットにブッシュを偏心回転可能に固定したことを特
徴とする現像器におけるマグネットローラの調心機構。It consists of a magnet roller that rotatably slides on the photosensitive drum, a bush that bears the rotational center axis of the magnet roller, and a bracket that supports the bush, and is characterized in that the bush is fixed to the bracket so that it can rotate eccentrically. The alignment mechanism of the magnetic roller in the developing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18839085A JPS6249385A (en) | 1985-08-29 | 1985-08-29 | Aligning mechanism for magnet roller in developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18839085A JPS6249385A (en) | 1985-08-29 | 1985-08-29 | Aligning mechanism for magnet roller in developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6249385A true JPS6249385A (en) | 1987-03-04 |
Family
ID=16222791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18839085A Pending JPS6249385A (en) | 1985-08-29 | 1985-08-29 | Aligning mechanism for magnet roller in developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6249385A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7570901B2 (en) | 2005-09-06 | 2009-08-04 | Samsung Electronics Co., Ltd | Roller spacing apparatus and image forming device having the same |
-
1985
- 1985-08-29 JP JP18839085A patent/JPS6249385A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7570901B2 (en) | 2005-09-06 | 2009-08-04 | Samsung Electronics Co., Ltd | Roller spacing apparatus and image forming device having the same |
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