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AUTOMATICALLY SET SIDE GUIDES FOR DOCUMENT FEEDER

IP.com Disclosure Number: IPCOM000025573D
Original Publication Date: 1986-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 83K

Publishing Venue

Xerox Disclosure Journal

Abstract

In present document feeders, one of the side guides and the end guide for the document stack in the document feeding tray in the document feeder are manually reset for the particular site of the document sheet being stacked therein.

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XEROX DISCLOSURE JOURNAL

AUTOMATICALLY SET SIDE GUIDES FOR DOCUMENT FEEDER
William A. Henry I1

Proposed Classification
U.S. CI. 355/14SH

Int. CI. G03g 15/00

In present document feeders, one of the side guides and the end guide for the document stack in the document feeding tray in the document feeder are manually reset for the particular site of the document sheet being stacked therein.

This can be automated by providing both a drive system and a control system for one or both of these stack defining members. The side guides may be driven by simple conventional mechanisms such as rotary lead screws, slides pulled by cables wound up on motor driven pulleys with spring returns or bi-directional motors, or the like. The motor drive for the movable drive will be controlled so as to normally maintain or set the guides in their outermost (largest document) positions. When a document or documents are sensed in the tray the drives will begin to drive in to move the documents into the appropriate (center or edge registered) positions and into stack alignment. The inward movement of the guides can be arrested in response to feedback resistance on switchpads and on the guide surfaces, and/or in response to detection of the maximum size of the actual size of the document by a number and position of actuated tray bottom sensors. Optional such sensors may be provided. The sensors would preferably be angled LED detector pairs of a conventional type placed in several different positions of the bottom of the document tray such that any conventional size document may be d...