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:
Jul. 21, 2015
Filed:
Nov. 07, 2013
Yuji Ikeda, Kanagawa, JP;
Yuji Ikeda, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A multi-feed judging device includes a transporting unit that holds a recording medium between a driving roller and a driven roller, which is driven by the driving roller, and transports the recording medium by rotating the driving roller; a detecting unit that detects a position of the driven roller; a calculating unit that calculates a thickness of the recording medium based on positions of the driven roller when the recording medium is transported and when the recording medium is not transported; a reference value updating unit that updates a reference value of the thickness by using the calculated thickness; a judging unit that judges, using the reference value, whether recording media, which are transported after the reference value was updated, are transported while overlapping each other or not. The calculating unit calculates the thickness when the position is within a predetermined range.