EP 0087074 B1 19860528 - METHOD AND DEVICE FOR THE DEVELOPMENT OF A LATENT ELECTROSTATIC IMAGE INDUCED ON A RECORDING MEDIUM
Title (en)
METHOD AND DEVICE FOR THE DEVELOPMENT OF A LATENT ELECTROSTATIC IMAGE INDUCED ON A RECORDING MEDIUM
Publication
Application
Priority
DE 3205989 A 19820219
Abstract (en)
[origin: US4481903A] The invention relates to a developing apparatus which, in a preferred embodiment, includes a first charging device comprising a rotating device, preferably designed as a brush having a core which is connected to a first voltage source. A single component developer is fed, from a developer feed unit, to the first charging device, by means of a metering roller. The charging device is enclosed by a trough, which is connected to a voltage source. A scraper in glancing contact with the bristles of the first charging device imparts an additional charge to the developer by tribo-electricity and sprays particles of developer on the bristles onto a developing roller. A second charging device, in the form of a second brush having a core connected to said voltage source may also be used. The grid is then positioned between the charging devices. A second scraper functions, in a similar manner, in conjunction with the second charging device. The developing roller is connected to a second voltage source and particles of developer, which form a uniform layer on the peripheral surface of the developing roller, are attracted by a latent charge image on a recording medium, to thereby obtain a developed charge image.
IPC 1-7
IPC 8 full level
G03G 15/08 (2006.01)
CPC (source: EP US)
G03G 15/0805 (2013.01 - EP US); G03G 15/0822 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0087074 A2 19830831; EP 0087074 A3 19840321; EP 0087074 B1 19860528; AU 1138083 A 19830825; AU 560674 B2 19870416; CA 1194733 A 19851008; DE 3205989 A1 19830901; DE 3363644 D1 19860703; JP S58152260 A 19830909; US 4481903 A 19841113
DOCDB simple family (application)
EP 83101272 A 19830210; AU 1138083 A 19830214; CA 421169 A 19830209; DE 3205989 A 19820219; DE 3363644 T 19830210; JP 2387383 A 19830217; US 46238483 A 19830131