EP 0525616 A2 19930203 - Charging device.
Title (en)
Charging device.
Title (de)
Aufladevorrichtung.
Title (fr)
Dispositif de chargement.
Publication
Application
Priority
JP 18259491 A 19910723
Abstract (en)
A charging device having a counter (11) for outputting an information signal indicating the number of copies produced as a detection signal indicating a change in the thicknes (T3) of a photosensitive layer (1c), and a microcomputer (12) for correcting the voltage to be applied to a charging roller (7) by a variable DC power source (10). When a detection signal from the counter (11) is input into the microcomputer (12), it corrects the voltage so as to approximate the surface potential of a photoreceptor drum to a set value. With this arrangement, the surface potential (Vc) of the photoreceptor drum (1) is kept uniform, and therefore it is possible to produce copies of good quality constantly. <IMAGE>
IPC 1-7
IPC 8 full level
G03G 15/00 (2006.01); G03G 15/02 (2006.01); G03G 21/08 (2006.01)
CPC (source: EP)
G03G 15/0266 (2013.01); G03G 21/08 (2013.01); G03G 2215/021 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0525616 A2 19930203; EP 0525616 A3 19940427; JP H0527557 A 19930205
DOCDB simple family (application)
EP 92112537 A 19920722; JP 18259491 A 19910723