Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2006-11-24
2010-12-14
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, C430S114000, C430S118600, C430S137220
Reexamination Certificate
active
07851117
ABSTRACT:
It is an object of the present invention to provide a liquid developer in which in liquid developers for electrophotography or electrostatic recording obtained using the coacervation method, electric resistance of the liquid developer and the electrophoretic property or the charging characteristic of the toner particles are adequately maintained, and the dispersibility of a pigment and the dispersion stability of the toner particles are good.A liquid developer formed by dispersing colored resin particles comprising at least a pigment, a dispersant and a resin in a hydrocarbon insulating medium using a coacervation method,wherein said dispersant is a carbodiimide compound having at least one basic nitrogen-containing group and at least one polyester side chain introduced through a reaction with a carbodiimide group in its molecule, andsaid resin is an acid group-containing resin and the acid value of the resin is 1 to 100.
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Iwase Koji
Okamoto Katsutoshi
Shibata Hideo
Yodo Takaaki
Le Hoa V
Sakata Inx Corp.
Westerman Hattori Daniels & Adrian LLP
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