Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2005-04-12
2005-04-12
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...
C430S137180, C430S137140, C399S252000
Reexamination Certificate
active
06878498
ABSTRACT:
An electrostatic latent image developing dry toner and the like are provided, in which toner remaining after transfer can be recovered during developing with or without having a blade cleaning stage for promoting friction of an electrostatic latent image holding member. The electrostatic latent image developing toner contains toner particles containing a binder resin and a colorant and monodisperse resin particles having a volume mean diameter of 80 to 300 nm, a gel ratio of 60% or more by weight, and a standard deviation of D50×0.20 or less. A method of producing the above toner first mixes monodisperse resin particles, which have a volume mean diameter of 80 to 300 nm, a gel ratio of 60% or more by weight, and a standard deviation of D50×0.20 or less, with toner particles containing a binder resin and a colorant, and adds an inorganic compound having a diameter smaller than that of the resin particles with a shear lower than the first mixing.
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Ninomiya Masanobu
Yoshihara Koutarou
Yoshino Susumu
Chapman Mark A.
Oliff & Berridg,e PLC
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