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:
Jun. 14, 1988
Filed:
Mar. 03, 1987
Applicant:
Inventors:
Hideki Matsumoto, Matsubara, JP;
Shigeo Koyama, Ibaraki, JP;
Hiroshi Kusumoto, Wakayama, JP;
Yoshizo Kawamori, Fujiidera, JP;
Satoshi Uemori, Nara, JP;
Assignee:
Mita Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ; 355 / ; 355 / ;
Abstract
A drum unit exchange time indicating device for image forming apparatus comprises, an integrated signal output means to give output of integrated signal added up according to the time of use of the drum unit, a life signal output means to give output of drum unit life signal when said integrated signal exceeds predetermined value and a paper-feed mode changing means to change the mode of paper-feeding into an extraordinary mode when said drum unit life signal is detected.