JPS63105149U

JPS63105149U -

Info

Publication number: JPS63105149U
Application number: JP20377986U
Authority: JP
Priority date: 1986-12-25
Filing date: 1986-12-25
Publication date: 1988-07-07

Description

[Brief explanation of the drawing]

図面第１図は本考案よりなる現像装置構成概要
一例を示す図、第２図は第１図の現像装置の駆動
系を示したブロツク図、第３図は第１図の現像装
置の動作フローの一例を示した図である。１：感光体ドラム、２：現像装置、３：現像ベ
ルト、４，５：内接コロ、６，７，８，９：内接
コロ（汲上げコロ）、１０，１１，１２，１３：
現像剤収納容器、１４：マグネツト、１５：ドク
ターブレード、１６，１７，１８，１９：スクレ
ーパ、３０：コピー選択キー、３１：コピースタ
ートキー、３２：コントロール回路、３３：現像
バイアス制御回路、３４：ＨＶＴ、３５：現像ベ
ルト駆動回路、３６：現像ベルト駆動モータ、３
７：汲上げコロ駆動回路、３８：汲上げコロソレ
ノイド、３９：スクレーパ駆動回路、４０：スク
レーパソレノイド、４１：現像剤供給駆動回路、
４２：現像剤供給駆動部。 Figure 1 is a diagram showing an example of the general configuration of the developing device according to the present invention, Figure 2 is a block diagram showing the drive system of the developing device shown in Figure 1, and Figure 3 is an operational flow of the developing device shown in Figure 1. It is a figure showing an example. 1: Photosensitive drum, 2: Developing device, 3: Developing belt, 4, 5: Internal roller, 6, 7, 8, 9: Internal roller (pumping roller), 10, 11, 12, 13:
Developer storage container, 14: Magnet, 15: Doctor blade, 16, 17, 18, 19: Scraper, 30: Copy selection key, 31: Copy start key, 32: Control circuit, 33: Development bias control circuit, 34: HVT, 35: Developing belt drive circuit, 36: Developing belt drive motor, 3
7: pumping roller drive circuit, 38: pumping roller solenoid, 39: scraper drive circuit, 40: scraper solenoid, 41: developer supply drive circuit,
42: Developer supply drive unit.

Claims

[Claims for Utility Model Registration] (1) A developing belt consisting of an endless non-magnetic band, with a part of its rotating orbit set as a developing area facing the surface of a latent image carrier. a group of internal rollers that are installed and supported within the developing belt to set the rotational trajectory and rotate the developing belt according to the set trajectory, and a position outside the rotational trajectory of the development belt. A cleaning means is arranged so as to be able to come into contact with and be separated from the outer surface of the developing belt, and removes the used developer on the outer surface when it comes into contact with the outer surface of the developing belt; A plurality of independent developer supply devices are arranged along the outer surface of the developing belt, and each independent developer supply device is normally placed on standby at a spaced apart position, and one of the plurality of developer supply devices described above is alternatively selected. A developing device comprising a moving means for moving the development belt relatively close to a position where developer can be supplied. (2) The group of internal rollers includes internal rollers that are provided so as to be able to approach and separate from each of the plurality of developer supply devices, and the internal rollers can be moved to the approaching position. 2. The developing device according to claim 1, wherein the moving means is constituted by a driving means for selectively selectively performing the following steps.