Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2006-08-29
2006-08-29
RoDee, Christopher (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S108600, C430S109400, C430S111400, C430S108800, C430S108700
Reexamination Certificate
active
07097951
ABSTRACT:
A toner of the present invention comprises at least a binder resin comprising as a main component a polyester resin, a wax, and a colorant, in which in case of measuring a wettability of the toner with respect to a mixed solvent of methanol and water in terms of an optical transimittance at an optical wavelength of 780 nm, a methanol concentration of the mixed solvent is in a range of 45 to 65% by volume when an optical transmittance is 80% and 10%, respectively; a melt index (MI) is of 0.1 to 10 g/10 min at a temperature of 125° C. and a load of 5 kg; the toner comparises a resin component insoluble to tetrahydrofuran (THF insoluble component) in an amount of 5 to 40% by mass based on a mass of the binder resin; and the toner comprises a THF soluble component having a main peak in a molecular weight region of 3,000 to 20,000, and has a proportion of a component having a molecular weight of 10,000 or less in the THF soluble component is 50% by mass or more, according to a chromatogram of the THF soluble component measured by gel permeation chromatography. According to the toner of the present invention, it is possible to control lowering of an image density after leaving under a high temperature and high humidity environment, and a decline in the image density due to a charge-rise phenomenon upon low rate printing. Further, the toner has excellent fixing property and high temperature offset characteristic, and occurring of the end-offset is controlled.
REFERENCES:
patent: 5135833 (1992-08-01), Matsunaga et al.
patent: 5294682 (1994-03-01), Fukuda et al.
patent: 5338638 (1994-08-01), Tsuchiya et al.
patent: 5747210 (1998-05-01), Emoto et al.
patent: 5830979 (1998-11-01), Nakayama et al.
patent: 5902709 (1999-05-01), Nakayama et al.
patent: 5972553 (1999-10-01), Katada et al.
patent: 5976752 (1999-11-01), Matsunaga et al.
patent: 6002895 (1999-12-01), Kasuya et al.
patent: 6238834 (2001-05-01), Tamura et al.
patent: 6300024 (2001-10-01), Yusa et al.
patent: 6485875 (2002-11-01), Karaki et al.
patent: 1241530 (2002-09-01), None
patent: 5-27478 (1993-02-01), None
patent: 9-251216 (1997-09-01), None
patent: 9-251217 (1997-09-01), None
patent: 10-60104 (1998-03-01), None
patent: 10-69126 (1998-03-01), None
patent: 11-24312 (1999-01-01), None
patent: 11-194533 (1999-07-01), None
patent: 00-241030 (2000-09-01), None
patent: 00-242027 (2000-09-01), None
Diamond, Arthur S. (ed.) Handbook of Imaging Materials. New York: Marcel-Dekker, Inc. (1991) pp. 163-170, 176-181.
Kasuya Takashige
Moribe Syuhei
Ogawa Yoshihiro
Yusa Hiroshi
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
RoDee Christopher
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