JPH0235153U

JPH0235153U -

Info

Publication number: JPH0235153U
Application number: JP11276688U
Authority: JP
Priority date: 1988-08-30
Filing date: 1988-08-30
Publication date: 1990-03-07

Description

[Brief explanation of drawings]

第１図は本案一実施例の現像装置の構成図、第
２図は上記現像装置に具備される現像剤担持部材
の斜視図、第３図及び第４図は従来例の構成図、
第５図は上記現像剤担持部材の別の例の斜視図、
第６図は従来例におけるキヤリアチエーンの穂立
ち状態を示す図、第７図は本案例におけるキヤリ
アチエーンの端部規制状態を示す図、第８図及び
第９図は現像剤担持部材の現像ニツプ幅を大きく
設定した例を示す図、第１０図は現像剤担持部材
にスクレーパ部を一体形成した例を示す図、第１
１図は現像剤の現像剤担持部材への供給を選択的
に断つことができるようにした現像装置例を示す
図、第１２図はその供給遮断状態を示す図である
。４……現像剤担持部材、４Ａ……ドクタ部、４
Ａ_１……開口部、４Ｂ……スクレーパ部、５……
磁石ローラ、８……現像剤受け取り部。 FIG. 1 is a block diagram of a developing device according to an embodiment of the present invention, FIG. 2 is a perspective view of a developer carrying member provided in the developing device, and FIGS. 3 and 4 are block diagrams of a conventional example.
FIG. 5 is a perspective view of another example of the developer carrying member;
FIG. 6 is a diagram showing a state in which the carrier chain stands up in the conventional example, FIG. 7 is a diagram showing the end regulation state of the carrier chain in the present example, and FIGS. 8 and 9 are diagrams showing the developing nip of the developer carrying member. FIG. 10 is a diagram showing an example in which the width is set large; FIG. 10 is a diagram showing an example in which the scraper portion is integrally formed with the developer carrying member;
FIG. 1 is a diagram showing an example of a developing device in which the supply of developer to a developer carrying member can be selectively cut off, and FIG. 12 is a diagram showing the state in which the supply is cut off. 4...Developer carrying member, 4A...Doctor part, 4
A ₁ ...Opening part, 4B...Scraper part, 5...
Magnetic roller, 8...Developer receiving section.

Claims

[Claims for Utility Model Registration] (1) A magnetic roller is provided inside the developer carrying member held in a non-rotating state, and by rotating the magnetic roller, the circumference of the developer carrying member received from the developer receiving portion is The developing device is configured to move the developer on the surface while magnetically supporting it, and develop an electrostatic latent image formed on the latent image carrier with the moving developer. An opening for regulating the amount of developer is formed between the openings, and a doctor section is provided to make the developer on the peripheral surface toward the developing section to a thickness suitable for development by passing the developer through the opening. . A developing device, characterized in that it is provided integrally with the developer carrying member. (2) The developing device according to claim 1, further comprising: a scraper portion for removing the developer on the developer carrying member after development, which is integrally provided with the developer carrying member. (3) During development, a magnetic roller is provided inside the developer carrying member held in a non-rotating state, and by rotating the magnetic roller, the developer on the circumferential surface of the developer carrying member received from the developer receiving portion is removed. The developing device is configured to develop an electrostatic latent image formed on the latent image carrier with a moving carried developer by moving the latent image carrier while magnetically carrying the developer. A plurality of developer carrying members are arranged around the circumference, and each of the developer carrying members is integrally provided with a scraper portion for removing the developer on the developer carrying member after development. A developer that is rotationally displaced so that when one of the developing devices is used for development, the scraper portion of the developer carrying member of the other developing device is placed in a position that blocks the developer receiving portion. A developing device characterized by having a supporting member.