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:
Aug. 02, 1994
Filed:
Apr. 14, 1992
Applicant:
Inventors:
Assignee:
Tomoegawa Paper Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430109 ; 430110 ;
Abstract
Present invention provides a toner for developing static charge images to the surface of which is adhered powder of aluminum oxide in the amount of 0.01% to 5% by weight. This aluminum oxide has a specific surface area of not less than 80 m.sup.2 /g as measured by BET method, and absorptional CO.sub.2 gas pieces of not more than 4.0 pieces/nm.sup.2.