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INTELLIGENT ACTIVE FRICTION RETARD PAPER FEEDER WITH WIDE LATITUDE CRITICAL PARAMETER CONTROL

IP.com Disclosure Number: IPCOM000026899D
Original Publication Date: 1994-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 108K

Publishing Venue

Xerox Disclosure Journal

Abstract

Proposed is an active retard paper feeder with an intelligent retard roll control as well as an intelligent stack normal force control. This feed head design will provide extremely high reliability with minimum sheet abrasioddamage otential, outstandin sheet separating and feeding abilities, programmability

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XEROX DISCLOSURE JOURNAL

INTELLIGENT ACTIVE FRICTION RETARD PAPER FEEDER WITH WIDE LATITUDE CRITICAL PARAMETER CONTROL
Robert P. Rebres

Proposed Classification
U.S. C1.355/308 Int. C1. G03g 21/00

26

20 44 38

XEROX DISCLOSURE JOURNAL - Vol. 19, No. 2 MarcldApril 1994 151

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INTELLIGENT ACTIVE FRICTION RETARD PAPER FEEDER WITH WIDE LATITUDE CRITICAL PARAMETER CONTROL (Cont'd)

Proposed is an active retard paper feeder with an intelligent retard roll control as well as an intelligent stack normal force control. This feed head design will provide extremely high reliability with minimum sheet abrasioddamage otential, outstandin sheet separating and feeding abilities, programmability

roll control is implemented through the use of a torque motor, and the stack normal force control through use of a solenoid and spring system both of which are sensor controlled, based on sheet position within the feed head. A key feature of this feed device also is the use of maximum friction components in both the feed and retard elements, whereas many prior devices relied on a critical and difficult friction balance of these elements.

For application to di i# icult versus ordinary or document feeding. The retard

Shown in the Figure is an active retard paper feeder system 10 that embodies the best features of all existing active retard feeders. Accordingly, an intelligent retard rolllreverse roll 20 is provided and is controlled by a torque motor (not shown) that rotates bidirectionally as indicat...