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:
Oct. 05, 1999
Filed:
Feb. 23, 1998
Applicant:
Inventors:
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430108 ; 430137 ;
Abstract
A binder-type carrier which does not cause image defects or uneven density and has excellent production characteristics, and a binder-type carrier manufactured by said method. The binder-type carrier has a magnetic powder content of 75-90 wt % and is produced by pulverizing via a mechanical pulverizer a material which has been kneaded within a predetermined temperature range using an extrusion kneader provided with two or more kneading units.