JPH032364U

JPH032364U -

Info

Publication number: JPH032364U
Application number: JP6358489U
Authority: JP
Priority date: 1989-05-30
Filing date: 1989-05-30
Publication date: 1991-01-10

Description

[Brief explanation of drawings]

第１図は本考案の第１の実施例を示す磁気ブラ
シ現像装置の断面図、第２図はその要部の拡大図
、第３図は第２の実施例を示す第１図相当図、第
４図は第３の実施例を示す要部断面図、第５図は
磁気ブラシ現像装置の概要図である。１……現像ケース、２ａ，２ｂ……側板、６…
…玉軸受、６ａ……玉軸受の外輪、６ｂ……玉軸
受の内輪、１０……マグネツトスリーブ、１１…
…回転軸、１３，１３ａ，１３ｂ，１３ｃ……加
圧手段、Ｅ……バイアス電源、Ｆ……スラスト力
。 FIG. 1 is a sectional view of a magnetic brush developing device showing a first embodiment of the present invention, FIG. 2 is an enlarged view of its main parts, and FIG. 3 is a view equivalent to FIG. 1 showing a second embodiment. FIG. 4 is a sectional view of a main part showing the third embodiment, and FIG. 5 is a schematic diagram of a magnetic brush developing device. 1...Developing case, 2a, 2b...Side plate, 6...
...ball bearing, 6a...outer ring of ball bearing, 6b...inner ring of ball bearing, 10...magnetic sleeve, 11...
... Rotating shaft, 13, 13a, 13b, 13c... Pressure means, E... Bias power supply, F... Thrust force.

Claims

[Claim for Utility Model Registration] The rotating shaft of the magnetic sleeve is supported via a ball bearing on one side plate of the developing case, a transmission wheel is fixed to the outer end of the rotating shaft, and a bias is attached to the outer ring of the ball bearing. In a magnetic brush developing device of an electrophotographic copying machine configured to connect a power source and apply a bias voltage to a magnetic sleeve via a ball bearing and a rotating shaft, an application that applies a thrust force to the rotating shaft of the magnetic sleeve is provided. 1. A magnetic brush developing device for an electrophotographic copying machine, characterized in that a pressure means is attached and the thrust force thereof is configured to press the inner ring of a ball bearing in the axial direction thereof.