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:
May. 29, 2018
Filed:
Aug. 04, 2016
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Makoto Arima, Abiko, JP;
Taishi Tomii, Matsudo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H 3/06 (2006.01); B65H 7/12 (2006.01); B65H 5/06 (2006.01); G01N 29/07 (2006.01); G01N 29/11 (2006.01); G01N 29/34 (2006.01); G01N 29/44 (2006.01);
U.S. Cl.
CPC ...
B65H 7/125 (2013.01); B65H 3/06 (2013.01); B65H 5/062 (2013.01); G01N 29/07 (2013.01); G01N 29/11 (2013.01); G01N 29/343 (2013.01); G01N 29/4427 (2013.01); B65H 2553/30 (2013.01); B65H 2557/61 (2013.01); B65H 2557/63 (2013.01); B65H 2801/06 (2013.01); B65H 2801/39 (2013.01); G01N 2291/011 (2013.01); G01N 2291/015 (2013.01); G01N 2291/0237 (2013.01); G01N 2291/048 (2013.01); G01N 2291/102 (2013.01);
Abstract
A transmitter transmits ultrasound to the conveyance path. A receiver receives the ultrasound. A double-feed detector detects whether or not double-feed of a plurality of sheets has occurred. A controller causes the transmitter to transmit ultrasound at a first burst interval when determining the threshold value, and causes the transmitter to transmit ultrasound at a second burst interval, which is shorter than the first burst interval, when detecting the double-feed of sheets. A double-feed detector determines a threshold value that enables distinction between double-feed and single-feed.