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. 06, 1991
Filed:
May. 18, 1990
Hiroshi Kusumoto, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A replaceable unit determination mechanism includes a detection mechanism which has a lever member which is arranged so that the lever member comes into contact with a claw-shaped member when a rotatable member is rotating. The detection mechanism generates a detection signal when the replaceable unit is placed at a predetermined position and stops generating the detection signal when the lever member comes into contact with the claw-shaped member after the replaceable unit is placed in the predetermined position. The determination mechanism also includes a determination part which determines that the replaceable unit is correctly placed in the predetermined position when the detection signal is supplied from the detection mechanism and which determines that the replaceable unit is a new replaceable unit when the detection mechanism stops generating the detection signal. The claw-shaped member is broken when the claw-shaped member comes into contact with the lever member of the detection mechanism.