Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2008-07-03
2011-12-13
Huff, Mark F (Department: 1721)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S112000, C430S116000
Reexamination Certificate
active
08076049
ABSTRACT:
A liquid developer includes an insulation liquid containing a fatty acid monoester and toner particles comprised of a resin material, the resin material containing a first resin component and a second resin component of which weight-average molecular weight Mw2is larger than a weight-average molecular weight Mw1of the first resin component. The first resin component and the second resin component are characterized in that the weight-average molecular weight Mw1of the first resin component is in the range of 3,000 to 12,000, the weight-average molecular weight Mw2of the second resin component is in the range of 20,000 to 400,000, and when an amount of the first resin component contained in the resin material is defined as A (wt %) and an amount of the second resin component contained in the resin material is defined as B (wt %), A and B satisfy a relation: 1.0≦A/B≦9.0. The liquid developer described above is harmless to the environment. Further, the liquid developer also has superior preservability and storage stability and superior fixing characteristics at a low temperature. An image forming apparatus that can suitably use such a liquid developer is also provided.
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Miura Satoru
Teshima Takashi
DLA Piper (LLP) US
Fraser Stewart
Huff Mark F
Seiko Epson Corporation
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