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. 13, 1990
Filed:
Mar. 29, 1988
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430137 ; 430138 ; 264 15 ;
Abstract
A toner for producing electrostatic latent images is produced by smoothing classified resinous particles so that the ratio of the smallest diameter to the largest diameter thereof is 0.70-0.90, mixing the smoothed base particles (A) with modifier particles (B) to attach the modifier particles (B) to the surfaces of the base particles (A), and fixing the modifier particles (B) to the base particles (A) under the action of a mechanical impact force.