The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 1996
Filed:
Aug. 19, 1993
Applicant:
Inventors:
Katsumi Nukada, Minami-ashigara, JP;
Katsumi Daimon, Minami-ashigara, JP;
Masakazu Iijima, Minami-ashigara, JP;
Yasuo Sakaguchi, Minami-ashigara, JP;
Assignee:
Fuji Xerox Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ;
U.S. Cl.
CPC ...
540142 ; 540139 ; 540140 ;
Abstract
A process for preparing hydroxygallium phthalocyanine comprising reacting a gallium trialkoxide and phthalonitrile or diiminoisoindoline in an alcohol solvent, preferably an alcohol having a boiling point of not lower than 150.degree. C., such as ethylene glycol, and hydrolyzing the resulting gallium phthalocyanine, preferably in an aqueous solution of an acid, such as sulfuric acid. The resulting hydroxygallium phthalocyanine exhibits stable electrophotographic characteristics, particularly photosensitivity, charging properties, and a dark decay rate.