Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2007-02-27
2007-02-27
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...
C430S125320, C430S126200, C430S110300, C430S111400, C430S137140, C430S045320, C399S258000, C399S259000
Reexamination Certificate
active
10659312
ABSTRACT:
The present invention provides a tandem-type image forming method using a trickle developing system, wherein the average circularity of a toner contained in at least a supplementary developer used for appropriately supplying a developer to a developing device is in the range of 0.940 to 0.980. In the toner, the ratio of the number of particles having an average circularity of 0.970 or greater, in a particle diameter range of a toner circle-equivalent diameter×3/5 or less, is 5% or less, and the ratio of the number of particles having an average circularity of 0.950 or less, in a particle diameter range of a toner circle-equivalent diameter×7/5 or greater, is 10% or less.
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Ishiyama Takao
Kadokura Yasuo
Kamada Hiroshi
Suwabe Masaaki
Take Michio
Chapman Mark A.
Fuji 'Xerox Co., Ltd.
Oliff & Berridg,e PLC
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