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EP 0119713 B1 19871007 - LIQUID ELECTROGRAPHIC DEVELOPERS

Title (en)

LIQUID ELECTROGRAPHIC DEVELOPERS

Publication

EP 0119713 B1 19871007 (EN)

Application

EP 84300812 A 19840209

Priority

US 46574783 A 19830211

Abstract (en)

[origin: EP0119713A1] Liquid electrographic developers are disclosed comprising an electrically insulating liquid carrier, dispersed toner particles, and dissolved in the carrier a polymeric charge-control agent and a polymeric charging agent. The charge-control agent is an addition copolymer of a quaternary ammonium salt monomer, a monomer having -COOH, -SO3H or -PO3HR acidic function wherein R is hydrogen or alkyl, and a solubilizing monomer. The charging agent is an addition copolymer of a polar monomer and a solubilizing monomer.

IPC 1-7

G03G 9/12; C08L 57/06; C08L 33/00

IPC 8 full level

G03G 9/12 (2006.01); G03G 9/13 (2006.01)

CPC (source: EP)

G03G 9/131 (2013.01)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0119713 A1 19840926; EP 0119713 B1 19871007; CA 1212854 A 19861021; DE 3466743 D1 19871112; JP S59157658 A 19840907

DOCDB simple family (application)

EP 84300812 A 19840209; CA 445451 A 19840117; DE 3466743 T 19840209; JP 2304384 A 19840213