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. 17, 1993
Filed:
Nov. 25, 1992
Applicant:
Inventor:
Shougo Iwai, Yamatokoriyama, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
364561 ; 355309 ; 377-8 ;
Abstract
To indicate a remaining portion of a photosensitive sheet roll of material a method and apparatus are provided. A rotation detector is secured to a rotation system rotatively supporting a photosensitive sheet roll. A measuring device measures the amount of rotation of the photosensitive sheet roll, detected by the rotation detector, within a predetermined time or during a period of one cycle of an image forming process. An indicating device indicates the remaining amount of the photosensitive sheet roll according to the rotation amount measured by the measuring device.