JPS58100365U

JPS58100365U - developing device

Info

Publication number: JPS58100365U
Application number: JP19725181U
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) [Abstract] 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
は本考案の一実施例である現像装置を示す一側断面図、
第３図は第２図中Ａ部を拡大して示す断面図、第４図は
本考案の第１の他の実施例を示す側断面図、第５図は本
考案の第２の他の実施例を示す側断面図である。２７・・・外筒（回転スリーブ）、２９．３３゜３４・
・・非吸引部、２８．３２・・・磁極。第４図３３、　　　第５図　゛　−FIG. 1 is an internal configuration diagram of a conventional electronic copying machine, and FIG. 2 is a side sectional view showing a developing device as an embodiment of the present invention.
FIG. 3 is an enlarged sectional view of part A in FIG. 2, FIG. 4 is a side sectional view showing the first other embodiment of the present invention, and FIG. It is a side sectional view showing an example. 27...Outer cylinder (rotating sleeve), 29.33°34.
...Non-attraction part, 28.32...Magnetic pole. Figure 4 33, Figure 5 -

Claims

[Scope of utility model registration request]

(1) An outer cylinder provided to face the surface to be developed, and a magnetic pole disposed within the outer cylinder to form a non-attracting portion in a portion facing the surface to be developed, and the magnetic force of the magnetic pole A developing device characterized in that a one-component magnetic developer is attracted, conveyed by rotation of the outer cylinder, charged by friction, and supplied to the surface to be developed at a non-attraction portion.

(2) The developing device according to claim 1, wherein the non-suction portion is a non-polar portion.

(3) The non-attracting part is characterized by being composed of a plurality of consecutively arranged magnetic poles of the same polarity.Claim No. 1 for patent registration for ★
Developing device as described in section.

(4) The developing device according to claim 1, wherein the non-attracting portion is comprised of a magnetic pole with a large pole surface.

(5) The developing device according to claim 1, wherein the upper surface of the outer cylinder is coated with a resin whose triboelectric charging property is opposite in polarity to that of the magnetic developer.