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:
Apr. 18, 1989
Filed:
Jul. 02, 1987
Keiji Nagira, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A cut sheet feeder feeds out a cut sheet from a first paper cassette when a bidirectional pulse motor for driving paper feed rollers rotates forward and from a second paper cassette when the bidirectional pulse motor rotates reversely, and can suppress feed-out of the cut sheet from the wrong paper cassette when the pulse motor starts to rotate. The feeding of the cut sheet from the wrong paper cassette is suppressed by stopping the motor at a predetermined phase. A first memory stores the predetermined phase and a second memory stores the current phase. A controller compares the contents of the first and second memories and applies a drive pulse to the motor until the contents of the memories coincide. A loop is formed in the cut sheet prior to the comparison of the contents of the memories to permit the motor to be rotated in the proper direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile