EP 0474460 B1 19941221 - Developing process.
Title (en)
Developing process.
Title (de)
Entwicklungsverfahren.
Title (fr)
Procédé de développement.
Publication
Application
Priority
JP 23239690 A 19900904
Abstract (en)
[origin: EP0474460A2] Disclosed is a developing process, which comprises forming a magnetic brush of a two-component developer comprising a magnetic carrier and a toner on a developing sleeve and bringing the magnetic brush into sliding contact with a photosensitive material having a charged image to form a toner image on the photosensitive material, wherein in advance to the sliding contact with the photosensitive material, portions having a low pack density (27) of the developer and portions having a high pack density (25) of the developer are alternately formed on the developing sleeve in the circumferential direction. According to this developing process, a contact frequency between the developing sleeve and the photosensitive material drum can be properly adjusted without drastic lamination of the earing length of the magnetic brush or the drum-sleeve distance, and an image having a high density can be obtained. Developing sleeve with the grooves (24) extending in axial direction used. <IMAGE>
IPC 1-7
IPC 8 full level
G03G 13/09 (2006.01); G03G 15/08 (2006.01); G03G 15/09 (2006.01)
CPC (source: EP)
G03G 13/09 (2013.01); G03G 15/0928 (2013.01); G03G 2215/0607 (2013.01); G03G 2215/0636 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0474460 A2 19920311; EP 0474460 A3 19920812; EP 0474460 B1 19941221; DE 69106087 D1 19950202; DE 69106087 T2 19950504; JP H04113377 A 19920414; JP H07117791 B2 19951218
DOCDB simple family (application)
EP 91308055 A 19910903; DE 69106087 T 19910903; JP 23239690 A 19900904