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:
Sep. 08, 1998
Filed:
Nov. 07, 1996
Applicant:
Inventors:
Toru Kikuchi, Hitachinaka, JP;
Shuho Yokokawa, Mito, JP;
Satoshi Aita, Hitachinaka, JP;
Isao Watanabe, Hitachinaka, JP;
Hidenori Takayasu, Hitachinaka, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
399 43 ; 399 27 ; 399 35 ;
Abstract
In order to provide an indication when it is necessary to exchange toner recovery container, an electrophotographic apparatus monitors the accumulated driving time of a toner supply drive unit, and a massage indicating 'exchange the toner recovery container' is displayed at the time when a toner supply switch is operated under state in which the accumulated driving time exceeds a preset value.