Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Reexamination Certificate
2011-04-26
2011-04-26
Le, Hoa V (Department: 1721)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
C430S137100, C430S137140
Reexamination Certificate
active
07932010
ABSTRACT:
There are provided a toner, a method of manufacturing the toner, a two-component developer, a developing device, and an image forming apparatus, which are excellent in a charge rising property, environmental stability, and life stability during printing and which cause less fogging. The toner contains a core particle containing binder resin and colorant, and a coating layer which contains resin and a charge control agent and is formed on a surface of the core particle. At least a part of the resin contained in the coating layer is melt-bonded to the core particle, and the charge control agent is dispersed and immobilized in the coating layer. The dispersed charge control agent has a dispersion diameter of less than 1 μm.
REFERENCES:
patent: 5429901 (1995-07-01), Muto et al.
patent: 2004/0110077 (2004-06-01), Yachi et al.
patent: 01-185649 (1989-07-01), None
patent: 02-001875 (1990-01-01), None
patent: 04-141665 (1992-05-01), None
patent: 04-182662 (1992-06-01), None
patent: 6-130726 (1994-05-01), None
patent: 2004-109406 (2004-04-01), None
Abstract of JP 1185649, Jan. 1984.
English langauge translation of JP 01185649, Jul. 1989.
Akazawa Yoshiaki
Kawase Yoshitaka
Yamada Saori
Le Hoa V
Nixon & Vanderhye P.C.
Sharp Kabushiki Kaisha
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