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:
Dec. 21, 1999
Filed:
Mar. 26, 1997
Applicant:
Inventors:
Assignee:
Canon Aptex Kabushiki Kaisha, Ibaraki-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ;
U.S. Cl.
CPC ...
271215 ; 271217 ;
Abstract
A sheet loading apparatus includes an ejecting unit for ejecting sheets from an image forming apparatus onto a tray, a non-contact distance measuring unit disposed on the tray to measure the distance between the upper surface of the sheet bundle on the tray and a predetermined position, a lifting unit for vertically shifting the tray, and a unit for performing sheet loading abnormality detection on the tray, vertical shift control for the tray, sheet presence/absence detection on the tray, and sheet loading amount detection on the tray in accordance with the distance measuring result of the distance measuring unit.