Resinous microparticles useful in powdery toner for electrophoto

Details Resinous microparticles useful in powdery toner for electrophoto Resinous microparticles useful in powdery toner for electrophoto

1989-01-17

1990-11-06

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

526217, 5262191, 526909, 430111, G03G 908, C08F 404

Patent

active

049685767

ABSTRACT:
Resinous microparticles useful in toner for electrophotography which are made of vinyl resin obtained by emulsion polymerization of at least one .alpha.,.beta.-ethylenically unsaturated monomers in the presence of cationic surfactant having an onium salt structure and a polymerization initiator having an amidine or amidine salt structure and whose average particle diameter is in a range of from 0.01 to 1.mu., and toner composition comprising toner particles and resinous microparticles as abovementioned are provided.

REFERENCES:
patent: 2478006 (1949-08-01), van Peski
patent: 2599300 (1952-06-01), Upson
patent: 3080351 (1963-03-01), Querfurth
patent: 3857824 (1974-12-01), Atkins
patent: 3914340 (1975-10-01), Dekking
patent: 4125700 (1978-11-01), Graham
patent: 4205152 (1980-05-01), Mizuguchi et al.
patent: 4260713 (1981-08-01), Tanaka et al.
patent: 4845007 (1989-07-01), Hyosu et al.
patent: 4868086 (1989-09-01), Ohtani et al.

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