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:
Mar. 13, 2012
Filed:
Dec. 03, 2010
Tetsuya Ohfuchi, Kanagawa-ken, JP;
Tetsuya Ohfuchi, Kanagawa-ken, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A sheet conveying device includes a controller having a processing unit to cause a first detector to detect an uppermost sheet, an elevator to lift and stop a sheet stack at a reference position, and a second detector to detect and store the position. In a primary operation of the controller, the uppermost sheet is attracted and conveyed for a given number of times while the second detector contacting it, a variation amount of angle is calculated and converted to a thickness of M sheets. With a driven contact roller retracted in a secondary operation, the sheet stack is lifted each time the uppermost sheets by a thickness of N sheets are attracted and conveyed based on the stored thickness of M sheets under N=XM ('M' represents a positive number, 'N' represents a positive integer, and “X” represents a positive number of 1 or greater).