Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2007-01-30
2007-01-30
Chapman, Mark A. (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S108400, C430S108210
Reexamination Certificate
active
10511097
ABSTRACT:
The present invention provides a safe charge control agent which exhibits an excellent negative chargeability and excellent dispersibility in and compatibility with binder resins, and is even applicable for col or toners. Specifically, the charge control agent consists of a naphthol derivative of formula [I]:and a salt thereof, and an electrophotographic toner comprising the agent are provided.
REFERENCES:
patent: 5786523 (1998-07-01), Ueno et al.
patent: 6409812 (2002-06-01), Ueno et al.
patent: 10-333361 (1998-12-01), None
patent: WO 96/32366 (1996-10-01), None
patent: WO 00/23526 (2000-04-01), None
Kitayama Masaya
Minami Kenji
Ueno Ryuzo
Wakamori Hiroyuki
Yonetani Nobuhiro
Chapman Mark A.
Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
Sughrue & Mion, PLLC
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