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:
Nov. 20, 2001
Filed:
Sep. 21, 1999
Norihiro Ohno, Yamanashi-ken, JP;
Nisca Corporation, Yamanashi-ken, JP;
Abstract
A document feeder is formed of a transfer path for allowing a document to pass therethrough, a transferring device situated along the transfer path for transferring the document along the transfer path, a stamping device situated near the transfer path for impressing a mark on a surface of the document transferred by the transferring device, and a setting device connected to the stamping device for setting a density of the mark on the document impressed by the stamping device so that the mark impressed on the document becomes substantially constant in the density when it is used. A driving device is connected to the transfer device for controlling a transferring speed of the document by the transferring device in accordance with density information set by the setting device. Therefore, even if ink itself in the stamping device is consumed, impressed mark can be identified by a user by controlling the density of the impressed mark.