Liquid developer and image forming apparatus

Details Liquid developer and image forming apparatus Liquid developer and image forming apparatus

2009-01-09

2010-12-28

Le, Hoa V (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

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

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

C430S112000, C430S115000, C399S122000, C399S233000

Reexamination Certificate

active

07858284

ABSTRACT:
A liquid developer includes an insulation liquid, toner particles dispersed in the insulation liquid, which at least a part of the surface of each of the toner particles contains a rosin resin and a dispersant improving dispersibility of the toner particles in the insulation liquid, which the dispersant is consisted of a material having a predetermined amine value. The liquid developer described above has superior positive charge property of toner particles and which has superior dispersibility of the toner particles for a long period of time. Further, an image forming apparatus that can suitably use such a liquid developer is also provided.

REFERENCES:
patent: 3669886 (1972-06-01), Kosel
patent: 4097391 (1978-06-01), Moschovis et al.
patent: 6447973 (2002-09-01), Asami et al.
patent: 2008/0118856 (2008-05-01), Ivanova
patent: 1427273 (1976-03-01), None
patent: 3332961 (2002-10-01), None

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