Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2006-03-28
2006-03-28
Chapman, Mark A. (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S108700, C430S111400
Reexamination Certificate
active
07018762
ABSTRACT:
In a toner T of the present invention, the liberated mother particle ratio is set to be 10% or less and the liberated silica particle ratio is set to be 0.2–10%, thereby reducing the possibility that the liberated mother particles18′and the mother particles18with silica particles19therein will be fused on toner-contact members such as a latent image carrier, a toner carrier, and a toner regulating member, and thus effectively preventing the filming of toner T. Therefore, according to the toner T of the present invention, the durability of the toner-contact members such as the latent image carrier, the toner carrier, and the toner regulating member can be improved. In addition, a large quantity of heat for heat fixing can be prevented from being consumed by the silica particles19because the amount of silica particles19is suitably set, and heat can be hardly transferred to mother particles18having a low melting point because the mother particles18are coated with a desired amount of silica particles19. Therefore, the low-temperature fixing property can be improved.
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