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:
Mar. 31, 1981
Filed:
Mar. 06, 1979
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430 98 ; 430111 ; 430904 ; 430107 ; 430138 ; 428403 ; 252316 ; 430903 ;
Abstract
A pressure fixable capsule toner encapsulated with an insulating material is featured by a main particle size located within a range from 5 to 25.mu., by a particle size distribution that at least 70% in number of the toner particles are within a size range of .+-.3.mu. of the main particle size, and by a relationship 0.02.ltoreq.(a-b)/b.ltoreq.0.4 wherein a and b respectively stand for the main particle size of the capsule toner and core material in microns.