Toner for developing electrostatic latent image, charge control agent for use in the toner, and process for preparing the charge control agent
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 4, 2003
Grant Date -
Dec 6, 2001
app pub date -
Mar 26, 2001
filing date -
Mar 13, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A toner for developing an electrostatic latent image is disclosed, which contains as a charge control agent a trivalent chromium salt of salicylic acid or a derivative thereof represented by the general formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each represents a hydrogen atom, a saturated or unsaturated, straight or branched alkyl group or, when taken together. R.sup.1 and R.sup.2 or R.sup.2 and R.sup.3 form a fused ring optionally having a saturated or unsaturated, straight or branched alkyl group, and n represents 0, 1 or 2. The trivalent chromium salts are formed by adding an aqueous solution of alkali metal salt of salicylic acid or a derivative thereof having a pH of 6.5 to less than 7.0 to an aqueous solution of a chromium (III) halide having a pH of 3.0 to 5.8.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully