Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2011-01-04
2011-01-04
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...
C430S111310
Reexamination Certificate
active
07862975
ABSTRACT:
A carrier core material for an electrophotographic developer containing Li ferrite, maghemite, and Fe3O4, wherein a part thereof is substituted with Mn, a Li content is 1 to 2.5% by weight, a Mn content is 2 to 7.5% by weight, and a silicon content is 25 to 10,000 ppm, a compression breaking strength is 130 MPa or more, an SF-1 is 125 to 145, respective cumulative strengths of respective spinel crystal structure faces in X-ray diffraction satisfy a certain equation, a vacuum resistivity R500across a 2 mm gap when a measurement voltage of 500 V is applied is 1×106to 5×109Ω, and a vacuum resistivity R1000across a 6.5 mm gap when a measurement voltage of 1,000 V is applied is 5×107to 1×1010Ω.
REFERENCES:
patent: 5466552 (1995-11-01), Sato et al.
patent: 5693444 (1997-12-01), Takagi et al.
patent: 5876893 (1999-03-01), Ochiai et al.
patent: 7183033 (2007-02-01), Shinmura et al.
patent: 7553597 (2009-06-01), Kobayashi et al.
patent: 2007/0231731 (2007-10-01), Suwa et al.
patent: 2009/0246676 (2009-10-01), Tabira et al.
patent: 7-333910 (1995-12-01), None
patent: 9-6052 (1997-01-01), None
patent: 9-236945 (1997-09-01), None
patent: 2007-333886 (1997-12-01), None
patent: 2007-271663 (2007-10-01), None
U.S. Appl. No. 12/399,164, filed Mar. 6, 2009, and entitled “Carrier Core Material For Electrophotographic Developer, Carrier, And Electrophotographic Developer Using The Carrier”.
U.S. Appl. No. 12/399,129 to Tabira, et al., filed Mar. 6, 2009.
Aga Koji
Suwa Tomoyuki
Tabira Yasunori
Greenblum & Bernstein P.L.C.
Le Hoa V
Mitsui Mining & Smelting Co. Ltd.
Powdertech Co., Ltd.
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