Title:
ELECTROPHOTOGRAPHIC TONER
Document Type and Number:
Japanese Patent JP3200459
Kind Code:
B2
Abstract:
PURPOSE: To obtain a toner having no adverse effect on human organism by using a coloring agent for food additive as a coloring agent and by using a phenol derivative having no metal as a polarity controlling agent.
CONSTITUTION: The toner contains at least a binding resin, a charge controlling agent and a coloring agent and the coloring agent is a coloring agent classified into carotene, norbixin salt, chlorophyll, chlorophylline salt, fluorescein salt, acid rhodamine, C.I. natural yellow, C.I. natural orange, C.I. natural red, C.I. natural blue, C.I. natural green, C.I. natural brown or C.I. natural black, C.I. food yellow C.I. food orange, C.I. food red, C.I. food violet, C.I. food blue, C.I. food green, C.I. food brown or C.I. food black and the charge controlling agent is composed of the phenol derivative having no metal.
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Inventors:
Tomoe Hagiwara
Shinichi Kuramoto
Kanjiro Kawasaki
Shinichi Kuramoto
Kanjiro Kawasaki
Application Number:
JP5618392A
Publication Date:
August 20, 2001
Filing Date:
February 06, 1992
Export Citation:
Assignee:
株式会社リコー
International Classes:
G03G9/097; G03G9/08; G03G9/09; (IPC1-7): G03G9/09; G03G9/097
Domestic Patent References:
| JP62125369A | ||||
| JP5254511A | ||||
| JP2201378A | ||||
| JP63266462A | ||||
| JP3237467A | ||||
| JP59168078A |
Attorney, Agent or Firm:
Hidehiko Takei