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. 21, 1984
Filed:
Dec. 28, 1981
Applicant:
Inventors:
Isao Niimura, Tokyo, JP;
Hiroshi Imagome, Tokyo, JP;
Hiroyoshi Yamaga, Tokyo, JP;
Noboru Akuzawa, Tokyo, JP;
Kenji Yuta, Koriyama, JP;
Takeo Kurahashi, Tokyo, JP;
Assignee:
Hodogaya Chemical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430109 ; 430110 ;
Abstract
An electrophotographic toner effective for producing clear visible images, comprises a binder resin, and a charge-controlling and coloring agent comprising at least one 2:1 type metal complex of the formula (I): ##STR1## wherein M is Cr or Co, n is 1 or 2, Y is H or a radical of the formula (II): ##STR2## wherein X is H, a halogen, a lower alkyl, a lower alkoxy or a nitro and m is 1, 2 or 3.