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. 20, 1996
Filed:
Jun. 20, 1995
Applicant:
Inventors:
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430108 ; 430111 ;
Abstract
A magnetic carrier for a developer for use in electrophotographic recording, comprising a ferromagnetic particle of an average particle size of 100 .mu.m or less, a ratio (T/a) of the minimum outer size (T) and the maximum outer size (a) of the magnetic carrier being 0.02-0.5. Since the magnetic carrier has a large specific surface area, a toner can be sufficiently charged by the magnetic toner. Therefore, a high quality printed image free from defect such as fogging, spreadness, carrier adhesion, streak, etc. can be obtained even in continuous printing of a long period of time.