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. 01, 2007
Filed:
Nov. 09, 2004
Norio Nagata, Matsumoto, JP;
Hideki Furihata, Okaya, JP;
Norio Nagata, Matsumoto, JP;
Hideki Furihata, Okaya, JP;
Seiko Epson Corporation, , JP;
Abstract
An image scanning apparatus for scanning a plurality of mediums of different thicknesses with each medium scanned by pressing the medium to the scanning surface of an image scanning sensor with appropriate force using a first pressure mechanism comprising first rollers for pressing the medium to the scanning surface, a coil spring for urging the first rollers toward the scanning surface when the media thickness is less than a specified thickness, and a first tension spring for urging the first rollers to the scanning surface when the media thickness exceeds the specified thickness and a second pressure mechanism comprising second rollers for pressing the medium to the scanning surface, and a second tension spring for urging the second rollers to the scanning surface wherein the force imposed upon the scanning surface by the coil spring is substantially equal to the force imposed by the second tension spring.