Toner for electrophotography

Details Toner for electrophotography Toner for electrophotography

2008-01-18

2011-10-25

Chapman, Mark (Department: 1721)

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

C430S123500, C430S123530, C430S123540

Reexamination Certificate

active

08043782

ABSTRACT:
A toner for electrophotography is provided including a binder resin, a coloring agent, a charge controlling agent, and a releasing agent, wherein when the temperature of the toner is in the range from a temperature 40° C. lower than a fixing temperature of the toner to a temperature 10° C. lower than the fixing temperature of the toner, the D Log η*/DT absolute value is 0.02 or more, when the temperature of the toner is in the range from a temperature 10° C. lower than the fixing temperature of the toner to a temperature 10° C. higher than the fixing temperature of the toner, the D Log η*/DT absolute value is 0.005 or less, and the complex viscosity (η*) of the toner at a fixing temperature and an angular velocity of a fixing heat roller is in the range from about 5.0×101Pa·s to 1.0×102Pa·s. The toner has excellent fixing properties so that the quality of an image can be stabilized, and cause less contamination.

REFERENCES:
patent: 7927776 (2011-04-01), Jeong et al.
patent: 7935470 (2011-05-01), Jeong et al.

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