Browse Prior Art Database

STATIC REDUCTION IN PLATEN BELTS

IP.com Disclosure Number: IPCOM000026545D
Original Publication Date: 1992-Aug-31
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 71K

Publishing Venue

Xerox Disclosure Journal

Abstract

A composition for reducing static charge build up on wide platen belts in recirculating document handlers is disclosed. Paper jams due to misregistration are commonly caused by static charge build up on wide platen belts or platen glass. Typically, hardware such as conductive brushes, support rollers and wires, are used to drain static charge build up in the document handler to ground.

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XEROX DISCLOSURE JOURNAL

STATIC REDUCTION IN PLATEN BELTS U.S. C1.5251331.8 Veni ta A. Jordan
Henry L. Manuel

Proposed Classification

Int. C1. C08F 08/34

A composition for reducing static charge build up on wide platen belts in recirculating document handlers is disclosed. Paper jams due to misregistration are commonly caused by static charge build up on wide platen belts or platen glass. Typically, hardware such as conductive brushes, support rollers and wires, are used to drain static charge build up in the document handler to ground.

Dissipation of static charge in recirculating document handler belts can also be achieved by incorporating commercially available antistatic agents and polar elastomers into an EPDM (ethylene propylene diene class M rubber) terpolymer belt formulation. Current wide friction platen belt resistivity is about 1015 ohm-cm. Resistivity values between 109 and 1011 ohm-cm provide useful (desired) levels of static charge dissipation. Antistatic agents such as Gafac RS-710 from GAF Chemicals and Ken-Stat KS 260s from Kenrich Petrochemicals, Inc. have shown to be effective in reducing resistivity in the EPDM terpolymer formulation to a useful level (109 to 1011 ohm-cm). Further reductions in resistivity are achieved by blending EPDM with polar elastomers such as chloroprene and nitrile rubber. Since EPDM is not a polar elastomer and antistatic agents are known to dissociate more readily when dispersed in a polar medium, EPDM is co-cured wit...