Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce color reproduction
Reexamination Certificate
2005-02-15
2005-02-15
Rodee, Christopher (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
To produce color reproduction
C430S047300
Reexamination Certificate
active
06855468
ABSTRACT:
In a method for forming a multicolored toner image in accordance with an electrophotographic process, the addition amount of external additives to a non-added toner is 1.5 to 10.0 parts by weight per 100 parts by weight of the non-added toner in each developing step, the aggregation degree of the toner is within the range of 30 to 80%, and the change ratio of the aggregation degree satisfies the relation:in-line-formulae description="In-line Formulae" end="lead"?0.8≦(initial aggregation degree/aggregation degree after no-load revolution of developing portion for 20 hours)≦1.2.in-line-formulae description="In-line Formulae" end="tail"?According to this method, it becomes possible to form a high-quality color image while a toner always keeps a stable degree of aggregation and a charge amount.
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Technical Information TI 1222. Special Hydrophobic AEROSIL (SHA) for Toners. Degussa (8/01).
Katagiri Yoshimichi
Kinoshita Masakazu
Kuramoto Shin-ichi
Nakamura Masae
Tosaka Hachiro
Armstrong Kratz Quintos Hanson & Brooks, LLP
Fujitsu Limited
Ricoh & Company, Ltd.
Rodee Christopher
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