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. 28, 1993
Filed:
Sep. 04, 1992
Michael B Thomson, Ware, GB;
Paul Theobald, Leighton Buzzard, GB;
Xerox Corporation, Rochester, NY (US);
Abstract
A sheet feeding and lateral registration system, including feed rollers (41, 42) for feeding sheets (50) in a process direction and registration apparatus (52, 53) for registering each sheet in a direction laterally of the process direction. The registration apparatus includes a shifting system (53) for laterally shifting a carriage (52) on which the feed rollers are mounted. A single edge sensor (57) is arranged to provide a signal on detecting the presence of a sheet, and a control controls the lateral shifting system in response to that signal. The control is operated such that if the sheet (50) is not detected by the sensor (57) on initial entry of the sheet into the feed rollers, then the shifting system (53) is activated to move the feed rollers laterally towards the sensor until the sheet is detected by the sensor, whereupon the lateral movement is stopped. However, if the sheet is detected by that sensor on initial entry of the sheet into the system, then the shifting system is first activated to move the feed rollers laterally away from the sensor until the sensor no longer detects the sheet, and then the shifting system is reverse activated to laterally move the feed rollers back towards the sensor until the sheet is again detected by the sensor.