Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2006-02-28
2009-10-06
Le, Hoa V (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S106200, C430S108600, C430S111300, C430S111310, C430S111320, C430S111330
Reexamination Certificate
active
07598011
ABSTRACT:
It is contemplated to provide irregular shaped ferrite carrier which has a lower resistance, a high specific surface area, a low specific gravity and a longer operational life, and an electrophotographic developer comprising the ferrite carrier which prevents the toner scattering, has a high image density, and is responsive to high-speed and color imaging. The irregular shaped ferrite carrier is characterized in that the carrier particles are irregular shaped, and 40 percent by number or more of the particles have a rock candy sugar shape and/or an oyster shell shape, and that the shape factor (SF-1=R2/S×π/4×100, wherein R is a maximum length and S is a projected area.) is 140 to 250, and the distribution width (δ) is 60 or less.
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patent: 2006/0099528 (2006-05-01), Budny et al.
patent: 2007/0087282 (2007-04-01), Iinuma et al.
Ferrite Beats (F-300), Material Safety Data Sheet is submitted by applicant on Nov. 18, 2008 being considered and made record.
Ferrite Beats (EFY-50BW), Material Safety Data Sheet is submitted by applicant on Nov. 18, 2008 being considered and made record.
Honjo Toshio
Iwata Toru
Kobayashi Hiromichi
Le Hoa V
Powdertech Co., Ltd.
Rothwell Figg Ernst & Manbeck P.C.
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