Title:
COLORED TONER FOR DEVELOPING ELECTROSTATIC IMAGE
Document Type and Number:
WIPO Patent Application WO/1993/008510
Kind Code:
A1
Abstract:
A colored toner for developing electrostatic images which has a degree of gelation of 2.0 % or less and comprises an association of secondary particles containing polymer particles having acidic or basic polar groups and an organic pigment and/or an organic dye treated with a treatment containing a surface treatment which has the same ionic character as that of the polymer particles in such a manner that the absolute value of $g(z)-potential will be 10 to 100 mV at a pH value of 5; and a developer for electrostatic images which comprises said toner and a carrier.
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Inventors:
KAMADA HIROSHI (JP)
MASUDA HITOSHI (JP)
HASEGAWA YUKINOBU (JP)
SHIMOMURA HIROYOSHI (JP)
SERIZAWA HIROSHI (JP)
OKUDA KENSUKE (JP)
MARUYAMA MASATOSHI (JP)
MASUDA HITOSHI (JP)
HASEGAWA YUKINOBU (JP)
SHIMOMURA HIROYOSHI (JP)
SERIZAWA HIROSHI (JP)
OKUDA KENSUKE (JP)
MARUYAMA MASATOSHI (JP)
Application Number:
PCT/JP1992/001371
Publication Date:
April 29, 1993
Filing Date:
October 21, 1992
Export Citation:
Assignee:
NIPPON CARBIDE KOGYO KK (JP)
International Classes:
G03G9/08; G03G9/087; G03G9/09; (IPC1-7): G03G9/08
Foreign References:
| JPS63282749A | 1988-11-18 | |||
| JPS63121060A | 1988-05-25 | |||
| JPS63186253A | 1988-08-01 |
Other References:
See also references of EP 0609443A4
Attorney, Agent or Firm:
Odajima, Heikichi (Nippon Jitensha Bldg. 9-15, Akasaka 1-chom, Minato-ku Tokyo 107, JP)
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