Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2005-09-28
2009-11-03
RoDee, Christopher (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S109400, C430S110200
Reexamination Certificate
active
07611814
ABSTRACT:
An object of the present invention is to provide a polymerized toner which has low-temperature fixing ability and is not likely to leak the toner from a developing cartridge, especially, when the toner is used for a high-speed image-forming device.A polymerized toner produced by polymerizing a polymerizable monomer composition comprising a polymerizable monomer, a colorant and a release agent in an aqueous medium is used, wherein:(1) the release agent is an ester compound;(2) the release agent is in the content from 1 part by weight or more to 9 parts by weight or less per 100 parts by weight of a monovinyl monomer in the polymerizable monomer;(3) a maximum endothermic peak temperature in a DSC curve of the release agent is in the range from 55° C. or more to 90° C. or less; and(4) a melt index value of the polymerized toner at 150° C. under load of 98 N (10 kgf) is in the range from 1 g/10 min or more to 30 g/10 min or less.
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Diamond, Arthur S & David Weiss (eds.) Handbook of Imaging Materials, 2nd ed.. New York: Marcel-Dekker, Inc. (Nov. 2001) pp. 182, 183, and 187-189.
Birch & Stewart Kolasch & Birch, LLP
RoDee Christopher
Zeon Corporation
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