EP 0967528 A2 19991229 - Developing device
Title (en)
Developing device
Title (de)
Entwicklungsvorrichtung
Title (fr)
Dispositif de développement
Publication
Application
Priority
JP 17426098 A 19980622
Abstract (en)
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)
Designated contracting state (EPC)
DE FR GB
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