Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Reexamination Certificate
2008-06-19
2009-08-04
RoDee, Christopher (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
C430S137140
Reexamination Certificate
active
07569322
ABSTRACT:
Toner of the present invention includes aggregated particles formed by aggregating at least resin particles, pigment particles, and wax particles in an aqueous medium in the presence of a water-soluble inorganic salt. The wax includes at least one selected from the following: ester wax that has an iodine value of not more than 25, a saponification value of 30 to 300, and an endothermic peak temperature (melting point) of 50° C. to 100° C. based on a DSC method; and wax that is obtained by a reaction of alkyl alcohol having a carbon number of 4 to 30, unsaturated polycarboxylic acid or its anhydride, and synthetic hydrocarbon wax, and has an acid value of 1 to 80 mgKOH/g and an endothermic peak temperature (melted point) of 50° C. to 120° C. based on the DSC method. The toner and a two-component developer can achieve oilless fixing that prevents offset without using oil while maintaining high OHP transmittance, can eliminate spent of the toner components on a carrier to make the life longer, and can ensure high transfer efficiency by suppressing transfer voids or scattering during transfer.
REFERENCES:
patent: 5567561 (1996-10-01), Yoshikawa et al.
patent: 5998078 (1999-12-01), Suwabe et al.
patent: 7169526 (2007-01-01), Ishikawa et al.
patent: 2001/0033982 (2001-10-01), Ishikawa et al.
patent: 2002/0012864 (2002-01-01), Takezawa et al.
patent: 2002/0064724 (2002-05-01), Nakamura et al.
patent: 2002/0086229 (2002-07-01), Yuasa et al.
patent: 2003/0091923 (2003-05-01), Kobayashi et al.
patent: 2003/0113650 (2003-06-01), Suwabe et al.
patent: 2005/0064314 (2005-03-01), Fujino et al.
patent: 2005/0100809 (2005-05-01), Fujino et al.
patent: 10-198070 (1998-07-01), None
patent: 2801057 (1998-07-01), None
patent: 10-301332 (1998-11-01), None
patent: 2000-298373 (2000-10-01), None
patent: 2001-134017 (2001-05-01), None
patent: 2001-142252 (2001-05-01), None
patent: 2001-209208 (2001-08-01), None
patent: 2001-235894 (2001-08-01), None
patent: 2002-23429 (2002-01-01), None
patent: 2002-196525 (2002-07-01), None
patent: 2003-084481 (2003-03-01), None
patent: 2003-131421 (2003-05-01), None
patent: 2003-149861 (2003-05-01), None
patent: 2003-156870 (2003-05-01), None
patent: 2005250154 (2005-09-01), None
English language translation of JP-2005250154 (Sep. 2005).
Diamond, Arthur S & David Weiss (eds.) Handbook of Imaging Materials, 2nded. New York: Marcel-Dekker, Inc. (Nov. 2001) pp. 182, 183, 187-189.
“Chemical Toner Technology and The Future” to Aoki, IS&T's NIP19, pp. 2-4 (2003).
Arase Hidekazu
Soga Mamoru
Yuasa Yasuhito
Hamre Schumann Mueller & Larson P.C.
Panasonic Corporation
RoDee Christopher
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