Browse Prior Art Database

CHUCK DESIGN FOR COATING AND TRANSFER OF ADHESIVE FILMS

IP.com Disclosure Number: IPCOM000026472D
Original Publication Date: 1992-Apr-30
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 69K

Publishing Venue

Xerox Disclosure Journal

Abstract

A chuck design for coating and transfer of highly uniform adhesive films used in fabricating thermal ink jet devices is disclosed. The chuck 1 is a hollow metal plate comprised of a circumferential groove 2, an evacuatable cavity 3 and vacuum take off port 4 as shown in Figures 1A (side view) and 1B (top view). The chuck may be made by casting or machining a metal disk of appropriate size. The chuck is further machined to achieve highly flat and smooth top and bottom surfaces (Fig. 1A) of less than 1 mil roughness and then spin balanced.

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XEROX DISCLOSURE JOURNAL

CHUCK DESIGN FOR COATING AND TRANSFER OF ADHESIVE FILMS Int. C1. Gold 15/18

Ram S. Narang

Proposed Classification
U.S. C1.346/140R

1

4

FIG. IA

FIG. IB

XEROX DISCLOSURE JOURNAL - VoI. 17, No. 2 MarchlAprill992 83

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CHUCK DESIGN FOR COATING AND TRANSFER OF ADHESIVE FILMS( Cont'd)

A chuck design for coating and transfer of highly uniform adhesive films used in fabricating thermal ink jet devices is disclosed. The chuck 1 is a hollow metal plate comprised of a circumferential groove 2, an evacuatable cavity 3 and vacuum take off port 4 as shown in Figures 1A (side view) and 1B (top view). The chuck may be made by casting or machining a metal disk of appropriate size. The chuck is further machined to achieve highly flat and smooth top and bottom surfaces (Fig. 1A) of less than 1 mil roughness and then spin balanced.

A commercial adhesive, for example, EPON@ available from Shell Corporation, is spin coated onto a 2 mil thick mylar disk held in place by vacuum suction on the chuck. The mylar disk coated with adhesive is transferred to an ink jet channel plate by rolling. Adhesive films of thicknesses of about 1 micron and of high uniformity (kO.05 micron) are achievable. The chuck design and fabrication techniques may be useful in other coating and transfer applications beyond thermal ink devices.

84 XEROX DISCLOSURE JOURNAL - Vol. 17, No. 2 MarcidApril 1992

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