Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2010-01-21
2010-12-28
Dote, Janis L (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S111320, C430S111350
Reexamination Certificate
active
07858283
ABSTRACT:
A magnetic carrier which has magnetic carrier particles each having at least porous magnetic core particles and a resin, in which, in a backscattered electron image of the magnetic carrier particles, photographed with a scanning electron microscope as taken at an accelerating voltage of 2.0 kV, magnetic carrier particles having area proportion S1found from a specific expression (1) of from 0.5 area % or more to 8.0 area % or less are in a proportion of 8.0% by number or more in the magnetic carrier, an average proportion Av1of the total area of portions having a high luminance which come from a metal oxide on the magnetic carrier particles to the total projected area of the magnetic carrier particles is from 0.5 area % or more to 8.0 area % or less, and an average proportion Av2found from a specific expression (2) is 10.0 area % or less.
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Baba Yoshinobu
Endo Tomoko
Fujikawa Hiroyuki
Inoue Chika
Ishigami Koh
Canon Kabushiki Kaisha
Dote Janis L
Fitzpatrick ,Cella, Harper & Scinto
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