Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1991-11-26
1994-07-19
Rosasco, Steve
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430111, 430137, G03G 900
Patent
active
053308719
ABSTRACT:
A toner for developing an electrostatic image is constituted by a binder resin and a colorant. The binder resin is characterized by containing at least 20 wt. % of an extraction residue after 6 hours of extraction and below 20 wt. % of an extraction residue after 72 hours of extraction respectively by Soxhlet extraction with tetrahydrofuran. The toner shows a dynamic modulus and a loss modulus, respectively at 200.degree. C. and 0.1 Hz, which are substantially unchanging with time. The properties provide the toner with a harmonization of anti-offset characteristic and fixability as well as stable viscoelasticity under heating.
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World Patents Index Latest, Week 9004, Derwent Public., for JPA 01-303447 (AN 90-025891).
World Patents Index Latest, Week 9005, Derwent Public., AN 90-032529 for JPA-01-309070.
Akashi Yasutaka
Joh Yoshinobu
Tanikawa Hirohide
Taya Masaaki
Uchiyama Masaki
Canon Kabushiki Kaisha
Rosasco Steve
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