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:
Jun. 05, 1990
Filed:
May. 31, 1985
Applicant:
Inventors:
Masami Tomita, Numazu, JP;
Toshiyasu Kawabata, Shizuoka, JP;
Toshiki Nanya, Numazu, JP;
Hisao Murayama, Numazu, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430106 ; 430109 ;
Abstract
A toner for developing latent electrostatic images is disclosed which comprises a binder agent and .epsilon.-type copper phthalocyanine blue pigment which serves as coloring agent and positive polarity controlling agent.