JPS58100366U

JPS58100366U - developing device

Info

Publication number: JPS58100366U
Application number: JP19725281U
Authority: JP
Inventors: 克己鈴木; 毅上野
Original assignee: 株式会社東芝
Priority date: 1981-12-26
Filing date: 1981-12-26
Publication date: 1983-07-08

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来例を示す電子複写機の内部構成図、第２図
は従来の現像装置を示す側断面図、第３図は第２図中Ａ
を拡大して示す断面図、第４図は本考案の一実施例であ
る現像装置を示す断面図、第５図は本考案の第１の他の
実施例を示す側断面図、第６図は本考案の第２の他の実
施例を示す側断面図である。３７・・・外筒（回転スリーブ）、３Ｂ、５１゜６１・
・・磁極、４５・・・被現像面、３９・・・非吸引部、
３３・・・磁性現像剤、３６・・・供給体（第１のマグ
ネットロール）、４３・・・吸引部、４８・・・回収体
（第２のマグネットロール）、４２・・・磁極。Fig. 1 is an internal configuration diagram of a conventional electronic copying machine, Fig. 2 is a side sectional view showing a conventional developing device, and Fig. 3 is A in Fig. 2.
FIG. 4 is a sectional view showing a developing device according to an embodiment of the present invention, FIG. 5 is a side sectional view showing the first other embodiment of the present invention, and FIG. FIG. 2 is a side sectional view showing a second alternative embodiment of the present invention. 37...Outer cylinder (rotating sleeve), 3B, 51°61.
...Magnetic pole, 45...Development surface, 39...Non-attracting part,
33... Magnetic developer, 36... Supply body (first magnet roll), 43... Attraction section, 48... Collection body (second magnet roll), 42... Magnetic pole.

Claims

[Scope of utility model registration request]

(1) A magnetic pole for attracting the magnetic developer is disposed inside the outer cylinder, and the part facing the surface to be developed is set as a non-attracting part, and the rotation of the outer cylinder transports the magnetic developer and draws it into the non-magnetic developer. A supply body that supplies the surface to be developed with a suction section, and a suction section consisting of a magnetic pole at a portion facing the surface to be developed, and the magnetic developer supplied by the supply body is directed toward a surface other than the surface to be developed. A developing device comprising: a collecting body for collecting magnetic developer by suction using the suction section.

(2) Utility model registration claim 1, characterized in that the magnetic pole of the collecting body is provided only in the portion facing the surface to be developed.
Developing device as described in section.

(3) The developing device according to claim 1 or 2, wherein the magnetic developer is a one-component magnetic toner.

(4) The developing device according to claim 1 or 2, characterized in that the outer cylinder is coated with a resin whose triboelectric charging property is opposite in polarity to that of the magnetic developer.