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. 28, 1984
Filed:
Sep. 27, 1982
Applicant:
Inventor:
Shinichi Nakata, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ;
U.S. Cl.
CPC ...
226 45 ; 400611 ; 242 57 ; 250571 ;
Abstract
A paper feed device for the printer of an electronic calculator or the like, has a paper detector which comprises a light-emitting diode and a phototransistor having registered optical axes. If a paper sheet is not detected when a paper feed key or the like is depressed, the paper sheet feed operation continues, even after the paper feed key is released, until the paper detector detects the paper sheet. Operability of paper feed is improved. The rest position in the printer of the leading edge of the paper sheet is determined by the position of the paper detector to thereby determine a constant printing position for the paper.