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. 30, 1993
Filed:
Mar. 08, 1991
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A sheet scanner scans a predetermined image on each feedable paper. The sheet scanner scans every line of the predetermined image in order to generate image data corresponding to the predetermined image. The predetermined image consists of a plurality of lines. The sheet scanner has only two rollers, which are first and second rollers. Each paper is fed from the first roller to the second roller. A first tangential speed of the first roller is lower than a second tangential speed of the second roller so that each paper is spaced at a regular interval from the next paper. The sheet scanner can make a line density for every line of the image data constant. The line density is defined as being scanned lines in a predetermined period divided by a tangential speed of feeding the paper at that time. Therefore, blurred scanning never occur in the sheet scanner according to the present invention.