Toner for electrophotography

Details Toner for electrophotography Toner for electrophotography

2011-04-19

2011-04-19

Dote, Janis L (Department: 1721)

Radiation imagery chemistry: process, composition, or product th

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

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

Reexamination Certificate

active

07927776

ABSTRACT:
A toner for electrophotography is provided that includes a binder resin, a colorant, a charge control agent, and a releasing agent, wherein the toner has a complex viscosity (η) of about 4.0×101Pa·s to about 1.6×103Pa·s at a temperature ranging from about 40° C. lower than a toner fixing temperature to about 10° C. higher than the toner fixing temperature and has a specified activation energy of 15 to 85 KJ/mol. By defining viscosity dependency in a linear modulus region of a toner and comprehensively defining thermal and rheological properties with respect to fixing conditions, a fixing phenomenon can be generalized and the quality of a toner can be evaluated.

REFERENCES:
patent: 5968701 (1999-10-01), Onuma et al.
patent: 7638251 (2009-12-01), Yamazaki et al.

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