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:
Oct. 21, 1997
Filed:
Mar. 22, 1996
Applicant:
Inventors:
Osamu Mukudai, Ibaraki, JP;
Yuuji Matsuura, Ibaraki, JP;
Isao Niimura, Ibaraki, JP;
Kayoko Watanabe, Ibaraki, JP;
Keiko Iwasa, Ibaraki, JP;
Assignee:
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430110 ; 430904 ;
Abstract
The present invention provides an electrophotographic toner free of metal such as chromium. A novel electrostatic image developing toner is provided, comprising as a charge-controlling agent one or more selected from the group consisting of compounds represented by formulae (I) and (II): ##STR1## wherein A, B and R are as defined in the specification.