Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce color reproduction
Reexamination Certificate
2006-05-23
2006-05-23
Rodee, Christopher (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
To produce color reproduction
C430S126200, C430S125320, C399S252000, C399S358000, C399S359000
Reexamination Certificate
active
07049037
ABSTRACT:
A color toner composition including at least toner particles including at least a binder resin; a colorant and a release agent dispersed in the binder resin; and a titania as an external additive, wherein the colorant has an average dispersion particle diameter not greater than 0.5 μm; the release agent and the binder resin are insoluble to each other; the toner particles satisfy the relationship: 0.05≦Dw/D4≦0.4, wherein Dw represents an average dispersion particle diameter of the release agent and D4represents a weight-average particle diameter of the toner particles; and the titania has a segregation rate of from 0.5 to 5%.
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Katoh Kohki
Kotsugai Akihiro
Sawada Toyoshi
Shiraishi Keiko
Suzuki Masanori
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