Browse Prior Art Database

Mask Printer Technique

IP.com Disclosure Number: IPCOM000093203D
Original Publication Date: 1967-Jul-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

McPherson, AJ: AUTHOR [+4]

Abstract

A mask-printer technique is used to print a bodied molten wax image onto a conductor surface. The molten wax image, when cooled, serves as an excellent plating and etch resist. The wax image is removed by heating and solvent cleaning. Bodying agents such as ethyl cellulose, chlorinated hydrocarbons, and chlorinated rubber are used to give no-bleed characteristics to the resist while being mask printed. Other materials, e.g., liquid epoxy resins which harden on standing, can be used in place of wax. Printed circuit chips using an integrated circuit interconnected pattern are prepared by this technique. Printed resist dots of .001 inches on .003 inch centers are attained.

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Mask Printer Technique

A mask-printer technique is used to print a bodied molten wax image onto a conductor surface. The molten wax image, when cooled, serves as an excellent plating and etch resist. The wax image is removed by heating and solvent cleaning. Bodying agents such as ethyl cellulose, chlorinated hydrocarbons, and chlorinated rubber are used to give no-bleed characteristics to the resist while being mask printed. Other materials, e.g., liquid epoxy resins which harden on standing, can be used in place of wax. Printed circuit chips using an integrated circuit interconnected pattern are prepared by this technique. Printed resist dots of .001 inches on .003 inch centers are attained.

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