Title:
TONER FOR ELECTROSTATIC-IMAGE DEVELOPMENT
Document Type and Number:
WIPO Patent Application WO/2000/058790
Kind Code:
A1
Abstract:
A toner for electrostatic-image development comprising a binder resin, a colorant, and a charge control agent, wherein the charge control agent comprises (A) a positive-charge control resin comprising a polymer having a weight-average molecular weight of 1,000 to 100,000 and having functional groups causing positive electrification and (B) a negative-charge control resin comprising a polymer having a weight-average molecular weight of 1,000 to 100,000 and having functional groups causing negative electrification. The toner is excellent in flowability, storage stability, static properties, and image quality.
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Inventors:
MASUO KOJIRO (JP)
YOKOYAMA SHUICHI (JP)
KISHIMOTO TAKUJI (JP)
NIWA KAZU (JP)
YOKOYAMA SHUICHI (JP)
KISHIMOTO TAKUJI (JP)
NIWA KAZU (JP)
Application Number:
PCT/JP2000/001848
Publication Date:
October 05, 2000
Filing Date:
March 27, 2000
Export Citation:
Assignee:
NIPPON ZEON CO (JP)
MASUO KOJIRO (JP)
YOKOYAMA SHUICHI (JP)
KISHIMOTO TAKUJI (JP)
NIWA KAZU (JP)
MASUO KOJIRO (JP)
YOKOYAMA SHUICHI (JP)
KISHIMOTO TAKUJI (JP)
NIWA KAZU (JP)
International Classes:
G03G9/087; G03G9/08; G03G9/097; (IPC1-7): G03G9/097
Foreign References:
| JPH11282212A | 1999-10-15 | |||
| JPH11174738A | 1999-07-02 | |||
| JPH11258848A | 1999-09-24 | |||
| JPH11242352A | 1999-09-07 | |||
| JPH01204060A | 1989-08-16 | |||
| JPH05249745A | 1993-09-28 | |||
| JPH09292739A | 1997-11-11 | |||
| JPH06161156A | 1994-06-07 | |||
| US5294490A | 1994-03-15 | |||
| EP0836122A1 | 1998-04-15 |
Attorney, Agent or Firm:
Nishikawa, Shigeaki (Higashi-Nippori 3-chome Arakawa-ku Tokyo, JP)
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