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IMAGING SYSTEM DRIVE

IP.com Disclosure Number: IPCOM000023892D
Original Publication Date: 1979-Apr-30
Included in the Prior Art Database: 2004-Apr-01
Document File: 2 page(s) / 217K

Publishing Venue

Xerox Disclosure Journal

Abstract

In particular imaging systems, it is conventional to drive two thin plastic webs over an imaging roll at matching velocities during the imaging step to avoid intermittent slippage between the two webs. A conventional system employs separate drive capstans for each web which are driven at the same nominal surface speed by a common driven motor. However, manufacturing tolerances on the diameter of the capstans prevent an exact match of such speeds, Thus, during imaging the blocking web drive capstan is declutched from the drive motor and is driven by friction contact with the conductive web at the imaging roll. Normal force between the webs is increased by the use of pressure rolls near the edges of the webs at the image roll. Critical balancing of the supply and take-uptension of the blocking web is required. An alternative capstan drive system is preferred wherein the blocking web and imaging web are superimposed over a single driving capstan.

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XEROX DISCLOSURE JOURNAL

IMAGING SYSTEM DRIVE Proposed Classification

U.S. Cl. 101/131
Tnt. Cl. B41l

In particular imaging systems, it is conventional to drive two thin plastic webs over an imaging roll at matching velocities during the imaging step to avoid intermittent slippage between the two webs. A conventional system employs separate drive capstans for each web which are driven at the same nominal surface speed by a common driven motor. However, manufacturing tolerances on the diameter of the capstans prevent an exact match of such speeds, Thus, during imaging the blocking web drive capstan is declutched from the drive motor and is driven by friction contact with the conductive web at the imaging roll. Normal force between the webs is increased by the use of pressure rolls near the edges of the webs at the image roll. Critical balancing of the supply and take~uptension of the blocking web is required. An alternative capstan drive system is preferred wherein the blocking web and imaging web are superimposed over a single driving capstan.

Volume 4 Number 2 March/April 1979 159

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