Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Reexamination Certificate
2007-09-10
2010-02-16
Le, Hoa V (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
C430S104000, C430S105000, C430S110100, C430S137190, C425S066000
Reexamination Certificate
active
07662534
ABSTRACT:
To provide a method including processing electrophotographic toner constituent material to a fibrous fine precursor and pulverizing and cutting it to obtain a uniform fibrous toner with energy efficiency in an apparatus for producing electrophotographic toner including a nozzle unit containing a nozzle having a flow path tapering toward the nozzle hole at 2° to 20° and a gas nozzle unit containing a gas nozzle and gas flow path tapering toward the nozzle hole at 15° to 33° relative to a direction of a nozzle axis, wherein the toner constituent material containing a raw material A containing a resin and pigment, and a raw material B containing one of a low melting point resin, wax and organic solvent, is extruded from the nozzle at 150° C. to 320° C., and drawn by gas flow from the gas nozzles so as to be a fibrous fluid while controlling the flow rate.
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Kawamoto Masahiro
Kinoshita Naotoshi
Tanaka Tetsuya
Le Hoa V
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
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