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BRUSH PINCH ROLLER

IP.com Disclosure Number: IPCOM000025288D
Original Publication Date: 1984-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 60K

Publishing Venue

Xerox Disclosure Journal

Abstract

In magnetographic copier/printers, hard pinch rollers paired with magnetic tape drive rollers cause the tapes to skew and tend to travel or walk off of the drive rollers. This makes tape steering by belt tracking rollers difficult. Also, the hard pinch rollers will mash unremoved developer material and other debris into the recording surface of the tape, making it difficult to keep the tape surface clean and free of filming by the developer material.

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XEROX DISCLOSURE JOURNAL

BRUSH PINCH ROLLER

Proposed Classification Almon P. Fisher U.S. C1. 355/15

Int. C1. G03g 21/00

      I 12 22 7- 20

In magnetographic copier/printers, hard pinch rollers paired with magnetic tape drive rollers cause the tapes to skew and tend to travel or walk off of the drive rollers. This makes tape steering by belt tracking rollers difficult. Also, the hard pinch rollers will mash unremoved developer material and other debris into the recording surface of the tape, making it difficult to keep the tape surface clean and free of filming by the developer material.

As shown in the accompanying figure, a brush pinch roller 12 has replaced the solid or hard pinch roller normally paired with the drive roller 14. Magnetic tape 16 is driven through the nip 18 and around the drive roller in the direction of arrow 20.

For this application, the brush pinch roller 12 was found to work well. It did not interfere with tape tracking and yet provided adequate force against the tape 16 to keep it in frictional engagement with the drive rollers 14. The tape recording surface 22 does not experience scratching by the bristles of the brush pinch roller and the bristles greatly aid in reducing filming or scumming caused by the developer material.

209 Volume 9 Number 3 May/June 1984

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210 XEROX DISCLOSURE JOURNAL

Volume 9 Number 3 May/June 1984

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