EP 0415727 B1 19941228 - Toner for developing statically charged images and process for preparation thereof.
Title (en)
Toner for developing statically charged images and process for preparation thereof.
Title (de)
Toner zur Entwicklung statischer Ladungsbilder und Verfahren zu dessen Herstellung.
Title (fr)
Toner pour le développement d'images de charge statique et son procédé de préparation.
Publication
Application
Priority
JP 22207189 A 19890829
Abstract (en)
[origin: EP0415727A2] A toner for developing statically charged images, comprising a binder resin, a colorant and a charge-controlling dye and a process for the preparation of this toner are disclosed. This toner consisting of particles composed of these components have a circularity of from 0.95 to 1.0, and the concentration of the dye on the surfaces of the toner particles is from 1.0 x 10<-><3> to 4 x 10<-><3> g/g. By dint of these characteristic features, the stability of the frictional chargeability characteristics of the toner is increased, and the contamination of a carrier, a developing device or the like with the dye can be prevented.
IPC 1-7
IPC 8 full level
G03G 9/09 (2006.01); G03G 9/08 (2006.01); G03G 9/087 (2006.01); G03G 9/097 (2006.01)
CPC (source: EP)
G03G 9/0806 (2013.01); G03G 9/0815 (2013.01); G03G 9/0825 (2013.01); G03G 9/0827 (2013.01)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0415727 A2 19910306; EP 0415727 A3 19910424; EP 0415727 B1 19941228; CA 2024161 A1 19910301; DE 69015515 D1 19950209; DE 69015515 T2 19950511; JP 2658006 B2 19970930; JP H0384558 A 19910410
DOCDB simple family (application)
EP 90309421 A 19900829; CA 2024161 A 19900828; DE 69015515 T 19900829; JP 22207189 A 19890829