JPH0371366U

JPH0371366U -

Info

Publication number: JPH0371366U
Application number: JP13202589U
Authority: JP
Priority date: 1989-11-15
Filing date: 1989-11-15
Publication date: 1991-07-18

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の現像装置を感光体
に対して対向配置させた状態を示す図、第２図は
磁石の磁力波形やセパレータ、パドルホイールな
どの構成形状などを示す図、第３図は同上実施例
の現像装置に具備される現像スリーブの断面図、
第４図は当該現像装置内の現像剤の流れを示す図
、第５図は同上現像装置に具備されるセパレータ
の平面図、第６図は従来の現像装置に備えられて
いた現像スリーブの断面図である。１……潜像担持体としてのドラム状感光体、８
，９……現像スリーブ、Ｐ１〜Ｐ５……磁石、Ｐ
１′〜Ｐ４′……磁石、１１……現像剤規制部材
。 FIG. 1 is a diagram showing a developing device according to an embodiment of the present invention arranged opposite to a photoconductor, and FIG. 2 is a diagram showing the magnetic waveform of the magnet and the configuration shapes of separators, paddle wheels, etc. FIG. 3 is a sectional view of a developing sleeve included in the developing device of the same embodiment as above;
Fig. 4 is a diagram showing the flow of developer in the developing device, Fig. 5 is a plan view of a separator provided in the developing device, and Fig. 6 is a cross section of a developing sleeve provided in the conventional developing device. It is a diagram. 1...Drum-shaped photoreceptor as a latent image carrier, 8
,9...Developing sleeve, P1-P5...Magnet, P
1' to P4'...Magnet, 11...Developer regulating member.

Claims

[Scope of utility model registration request]

A plurality of developing sleeves are placed opposite to each other on a latent image carrier, and the developer is transported while being carried around each developing sleeve by the magnetic force of a plurality of magnets fixedly arranged in the circumferential direction inside the developing sleeve. A developing device that visualizes an electrostatic latent image on a latent image carrier with a developer, wherein the amount of developer on the developing sleeve on the most upstream side with respect to the moving direction of the latent image carrier is A developer regulating member for regulating before imaging is provided, and the length of the magnet in the axial direction of the developing sleeve is shorter than the width of the developer regulating member, and the width of the maximum image is set. In a developing device that is larger than the above, among the magnets inside the developing sleeve on the most upstream side,
The length of the magnet for pumping up the developer supplied to the developing sleeve toward the developer regulating member is set so that both ends of the magnet are inside of both ends of the other magnets. A shorter developing device.