Toner for development of electrostatic image
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United States of America Patent
Stats
-
May 13, 2003
Grant Date -
N/A
app pub date -
Sep 25, 2001
filing date -
Mar 26, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A toner for development of electrostatic images, comprising at least a binder resin, a colorant and a charge control agent, wherein the charge control agent contains a positive charge control resin (A) composed of a polymer having a weight average molecular weight of 1,000 to 100,000 and a functional group which brings positively charging ability, and a negative charge control resin (B) composed of a polymer having a weight average molecular weight of 1,000 to 100,000 and a functional group which brings negatively charging ability. The toner is excellent in flowability, shelf stability and charge properties, and provides images excellent in image quality.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 9 Citation Count
- G03G Class
- 2.97 % this patent is cited more than
- 22 Age