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:
Mar. 25, 1986
Filed:
Dec. 21, 1984
Atsushi Narukawa, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A copying machine uses a belt-like photosensitive member installed between a pair of rollers from which the belt-like photosensitive member is freely detachable or mountable on these. The preferred embodiments are capable of controlling the copying process timing using sensor means provided in the copying machine which detects either a plurality of cutout portions or markers on the lateral sides of the photosensitive member wherein the preferred embodiments comprise; a timer starting the counting operation when the photosensitive member diagnosis mode is entered simultaneous with the start of the roller rotation after turning the power of the copy machine ON; means for identifying whether the output signal from sensor means varies or not during a period when the timer counts a specific period of time; and means for alarming the operator that the photosensitive member is improperly installed onto rollers only when the output signal from sensor means remains unchanged within a specific period of time counted by the timer.