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:
Apr. 13, 1999
Filed:
Mar. 19, 1996
Sunichirou Kawada, Ibaraki, JP;
Yoshihiro Noguchi, Ibaraki, JP;
Riso Kagaku Corporation, Tokyo, JP;
Abstract
A sheet feeding apparatus includes: a sheet feeding table on which sheets are stacked, the sheet feeding table being vertically movable; a sheet feeding roller mechanism provided in a vertical movement path of the sheet feeding table, the sheet feeding roller mechanism having a roller for feeding the sheets from the sheet feeding table one at a time, the roller being vertically displaceable; a spring for urging the sheet feeding roller mechanism in a direction of downward movement of the sheet feeding table; a detector for detecting when, during the upward movement of the sheet feeding table, the sheet feeding roller mechanism is lifted to a predetermined position against the spring, to stop the upward movement of the sheet feeding table; and a movable member movable and lockable for operating a change-over mechanism for changing the raised position of the sheet feeding roller mechanism which is obtained when the sheet feeding roller mechanism is detected by the detector.