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. 03, 1999
Filed:
Oct. 28, 1997
Applicant:
Inventors:
Tomoyasu Umeno, Hachioji, JP;
Meizo Shirose, Hachioji, JP;
Tatsuya Nagase, Hachioji, JP;
Ryuji Kitani, Hachioji, JP;
Assignee:
Konica Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430108 ; 4301066 ;
Abstract
A carrier for a developer developing an electrostatic image is disclosed. The carrier contains magnesium from 2.0 to 25.0 by means of number of atoms by percent in surface portion. According to the invention excellent charge rising properties may be consistently exhibited for extended time periods, and neither toner scattering nor background deposits on images are caused.