Browse Prior Art Database

MASK STRIPPING PROCESS

IP.com Disclosure Number: IPCOM000023606D
Original Publication Date: 1978-Jun-30
Included in the Prior Art Database: 2004-Mar-31

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a process for reclaiming and salvaging masking devices and adhering selenium containing inorganic photo-conductive materials onto an aluminum base or substrate, involving precoating the mask with one or more very thin layers of polyvinyl alcohol, vacuum coating the drum with the photoconductive material, and thereafter treating the demounted masking device in a bath comprising of hot water or a corresponding low weight monohydroxy alcohol solution, which causes the insoluble photoconductive material to delaminate and fall to the bottom of the vessel and the polyvinyl alcohol to dissolve, In addition to refurbishing masking devices, this method can also be used for the reclamation of various inorganic photoconductive materials found adhering to masking devices and to other removable vacuum coater hardware items-