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ADJUSTABLE DRIVE ROLL

IP.com Disclosure Number: IPCOM000027006D
Original Publication Date: 1994-Dec-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 4 page(s) / 143K

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-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 expand. In the third method, the two drive rolls are purposely made with differing peripheral diameters to obtain the proper skew.

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

ADJUSTABLE DRIVE ROLL

C1.279/002.02 U.S. Proposed Daniel L. Carter Classification

Int. C1. B25g 3/22

3Q

,7/32

28

FIG. I

XEROX DISCLOSURE JOURNAL - Vol. 19, No. 6 NovembedDecember 1994 445

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

Page 2 of 4

ADJUSTABLE DRIVE ROLL(Cont'd)

1

I

FlG. 2

230 \ 210 240

220

F/G. 4

446 XEROX DISCLOSURE JOURNAL - Vol. 19, No. 6 NovembedDecember 1994

[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. 19, No. 6 NovernbedDecember 1994 447

[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 expand. In the third method, the two drive rolls are purposely made with differing peripheral diameters to obtain the proper skew.

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 d...