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ADJUSTABLE DRIVE ROLL

IP.com Disclosure Number: IPCOM000027045D
Original Publication Date: 1995-Feb-28
Included in the Prior Art Database: 2004-Apr-07
Document File: 4 page(s) / 152K

Publishing Venue

Xerox Disclosure Journal

Abstract

A device is used for adjusting the skew on one side of a drive roll for advancing a sheet in a copier or printer. The periphery of one of a pair of drive rolls is made to be larger than the other. The different sizes of the two drive rolls can be accomplished by at least three methods. In the first method, one of the two rolls includes a first wedge shaped collar fixed to the shaft and a second wedge shaped collar that is adjustable axially along the shaft. The wedges of the first and second collar form a groove therebetween. A collet is located over grooves of the collars. As the second collar is moved toward the first collar the collet expands. An elastomer roll is fitted over the collet and likewise expands the periphery of the elastomer roll. The elastomer roll thereby has a periphery that may be adjusted to obtain the proper skew. In the second method, an o-

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

ADJUSTABLE DRIVE ROLL

C1.279l002.02 U.S. Proposed Daniel L. Carter Classification

Int. C1. B25g 3/22

[Reprinted because of a typographical
error. This Disclosure originally printed
in the NovemberlDecember
1994
Xerox Disclosure Journal]

30

,7/32

28

FIG. I

XEROX DISCLOSURE JOURNAL - Vol. 20, No. 1 January/February 1995 13

[This page contains 1 picture or other non-text object]

Page 2 of 4

ADJUSTABLE DRIVE ROLL (Cont'd)

28 \

FIG. 2

230

\ 210 240

220

FIG. 4

14 XEROX DISCLOSURE JOURNAL - Vol. 20, No. 1 January/February 1995

[This page contains 1 picture or other non-text object]

Page 3 of 4

ADJUSTABLE DRIVE ROLL (Cont'd)

132

FIG. 3

XEROX DISCLOSURE JOURNAL - Vol. 20, No. 1 January/February 1995 15

[This page contains 1 picture or other non-text object]

Page 4 of 4

ADJUSTABLE DRIVE ROLL (Cont'd)

A device is used for adjusting the skew on one side of a drive roll for advancing a sheet in a copier or printer. The periphery of one of a pair of drive rolls is made to be larger than the other. The different sizes of the two drive rolls can be accomplished by at least three methods. In the first method, one of the two rolls includes a first wedge shaped collar fixed to the shaft and a second wedge shaped collar that is adjustable axially along the shaft. The wedges of the first and second collar form a groove therebetween. A collet is located over grooves of the collars. As the second collar is moved toward the first collar the collet expands. An elastomer roll is fitted over the collet and likewise expands the periphery of the elastomer roll. The elastomer roll thereby has a periphery that may be adjusted to obtain the proper skew. In the second method, an o-

ring is substituted for the collet and the elastomer roll. As the second collar is moved toward the first collar the O-ring and its periphery ex and. In the third

drive two the method, diameters to obtain the proper skew. rolls are purposely made with di R ering peripheral

It is occasionally desired to feed a sheet in a copier or printer through drive rolls and obtain a certain skew rather than have the sheet feed perfectly forward. This device performs this function effi...