JPS58163971U

JPS58163971U - charging device

Info

Publication number: JPS58163971U
Application number: JP6048882U
Authority: JP
Inventors: 隆島崎; 向井　秀雄; 高野　敏正; 武史野崎
Original assignee: 株式会社東芝
Priority date: 1982-04-27
Filing date: 1982-04-27
Publication date: 1983-11-01

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図は本考案の一実施例を示す電子複写機の断面図、
第２図は同例の要部を示す構成図、第３図は同例の他の
要部を示す構成図である。１１．１９・・・コロナ電極、１２・・・金属シールド
、１３．２１・・・直流電源、１４・・・感光体、１５
・・・１次帯電・転写兼用ユニット、１６・・・２次帯
電ユニット、１７・・・交流電源、１８・・・コンデン
サー、２０・・・対電極。FIG. 1 is a sectional view of an electronic copying machine showing an embodiment of the present invention;
FIG. 2 is a block diagram showing a main part of the same example, and FIG. 3 is a block diagram showing another main part of the same example. 11.19... Corona electrode, 12... Metal shield, 13.21... DC power supply, 14... Photoreceptor, 15
... Primary charging/transfer unit, 16... Secondary charging unit, 17... AC power supply, 18... Capacitor, 20... Counter electrode.

Claims

[Scope of utility model registration request]

(1) In a charging device of a copying machine in which a photoreceptor moves relative to a copying process including charging, exposure, development, and transfer, a primary charging/transfer unit disposed opposite the photoreceptor; A charging device comprising a secondary charging unit located downstream of the primary charging/transfer unit in a direction of relative movement of the photoreceptor and facing the photoreceptor. (2+ The secondary charging unit includes a corona electrode that generates an alternating corona discharge, an alternating power supply that applies an alternating voltage to the corona electrode via a capacitor, a counter electrode that is disposed close to the corona electrode, and 2. The charging device according to claim 1, which comprises a DC power supply for applying a DC voltage to a counter electrode.