EP 0967528 A3 20010131 - Developing device
Title (en)
Developing device
Title (de)
Entwicklungsvorrichtung
Title (fr)
Dispositif de développement
Publication
Application
Priority
JP 17426098 A 19980622
Abstract (en)
[origin: EP0967528A2] A developing device for developing an electrostatic latent image on a photoconductive member has a developing roller that bears a one-component developer on its surface and develops the electrostatic latent image by contacting the photoconductive member; a supply roller for supplying developer to the developing roller; and a blade that contacts the developing roller so as to regulate a layer thickness of the developer supplied by the supply roller, wherein supposing that the developer has a volume-average particle size represented by Dbk, the developer at this time being maintained on the developing roller as a layer that has been supplied by the supply roller and again formed so as to have a predetermined thickness by the blade after the developing roller, on which the developer was formed as a layer having a predetermined thickness, carried out a black-image developing process, and supposing that the volume-average particle size of the developer is Dwt, the developer at this time being maintained on the developing roller as a layer that has been supplied by the supply roller and again formed so as to have a predetermined thickness by the blade after the developing roller, on which the developer was formed as a layer having a predetermined thickness, carried out a white-image developing process, an inequality, Dwt/Dbk > 0.8, is satisfied. <IMAGE>
IPC 1-7
IPC 8 full level
G03G 9/08 (2006.01); G03G 13/08 (2006.01); G03G 15/08 (2006.01)
CPC (source: EP)
G03G 13/08 (2013.01)
Citation (search report)
- [E] EP 0939349 A2 19990901 - SHARP KK [JP]
- [XY] US 5477006 A 19951219 - IMAMIYA KOJI [JP], et al
- [X] US 5387967 A 19950207 - BREWINGTON GRACE T [US], et al
- [X] US 4987454 A 19910122 - NATSUHARA TOSHIYA [JP], et al
- [Y] PATENT ABSTRACTS OF JAPAN vol. 017, no. 611 (P - 1641) 10 November 1993 (1993-11-10)
- [Y] PATENT ABSTRACTS OF JAPAN vol. 1998, no. 04 31 March 1998 (1998-03-31)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0967528 A2 19991229; EP 0967528 A3 20010131; EP 0967528 B1 20030903; CN 1120388 C 20030903; CN 1246663 A 20000308; DE 69910907 D1 20031009; DE 69910907 T2 20040722; JP 2000010404 A 20000114
DOCDB simple family (application)
EP 99111926 A 19990622; CN 99110943 A 19990622; DE 69910907 T 19990622; JP 17426098 A 19980622