JPH0360353U

JPH0360353U -

Info

Publication number: JPH0360353U
Application number: JP12118689U
Authority: JP
Priority date: 1989-10-16
Filing date: 1989-10-16
Publication date: 1991-06-13

Description

[Brief explanation of drawings]

第１図ａはこの考案の多段現像装置の一実施例
を示す正面図、第１図ｂは上記実施例における要
部としてのボスの摺動部分を示す断面図、第２図
は上記実施例の内部を示す断面図、第３図は上記
実施例の多段現像装置が装填される画像形成装置
の内部構造の一例を示す概略図、第４図は感光体
ドラムと現像ローラとの位置決めにコロを用いた
従来の機構を示す概略図である。１……現像装置本体、１ｂ……側板、１３，１
３……溝、２，３……現像ローラ、７，７……ボ
ス、８，８……微調整手段、Ａ……多段現像装置
、Ｄ……感光体ドラム。 FIG. 1a is a front view showing an embodiment of the multi-stage developing device of this invention, FIG. 1b is a sectional view showing the sliding portion of the boss as the main part in the above embodiment, and FIG. 2 is a front view showing the above embodiment. 3 is a schematic diagram showing an example of the internal structure of an image forming apparatus in which the multi-stage developing device of the above embodiment is loaded, and FIG. 1 is a schematic diagram showing a conventional mechanism using 1...Developing device main body, 1b...Side plate, 13, 1
3...groove, 2,3...developing roller, 7,7...boss, 8,8...fine adjustment means, A...multistage developing device, D...photosensitive drum.

Claims

[Scope of utility model registration request]

The toner is electrostatically attracted to the electrostatic latent image, which is rotatably supported within a developing device main body that accommodates the toner and is placed adjacent to the surface of the photosensitive drum on which the electrostatic latent image is formed. In a multi-stage developing device including a plurality of developing rollers, each of the developing rollers is attached to the developing device main body so as to be movable individually toward the photosensitive drum side, and the developing device main body and each developing roller In between, each of the developing rollers is moved relative to the developing device main body,
A multi-stage developing device characterized by being provided with fine adjustment means for individually adjusting the distance to the photosensitive drum for each developing roller.