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:
Jan. 16, 1979
Filed:
May. 27, 1977
Applicant:
Inventors:
Shin-ichi Oda, Hyogo, JP;
Tosaku Okamoto, Osaka, JP;
Akira Nakanishi, Osaka, JP;
Takio Kuroda, Hyogo, JP;
Assignees:
Kanzaki Paper Manufacturing Co., Ltd., Tokyo, JP;
Sanko Kagaku Co., Ltd., Fukuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
252 / ; 252 / ; 260 4255 ; 427150 ; 428307 ;
Abstract
A color developer is obtained by the process which comprises heating a mixture of at least one aromatic carboxylic acid, at least one water-insoluble organic polymer and at least one oxide or carbonate of polyvalent metal to melt at least one of aromatic carboxylic acid and said polymer to form a homogeneous mass. The color developer may be pulverized to form finely divided particles.