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AssigneeInternational Business Machines Corporation
InventorsMitchell S. Cohen, Keith S. Pennington, Krishna G. Sachdev, William D. Weber
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For high speed electroerosion recording, this invention provides a polyorganosiloxane overlayer which includes high lubricity solid particles as a filler. The overlayer provides a combination lubricant and protective layer for the thin metal layer which is removed by electroerosion to prevent damage for the areas not removed by electroerosion. The polyorganosiloxane overlayer is preferably crosslinked, and is relatively hard, durable, and especially resistant to thermal degradation by the electroerosion arcing. This is important to avoid debris buildup at the recording electrodes resulting from the high temperature arcing for removal of the overlayer in the areas where recording takes place.
An improved electroerosion recording material comprising a non-conductive support member, a thin layer of conductive material supported upon said support member and being removable by evaporation during electroerosion recording, an overlayer of protective lubricant composition on the stylus-contacting surface of said material, said lubricant composition comprising particles of high lubricity dispersed in a solid polyorganosiloxane binder, said polyorganosiloxane binder consisting predominately of a polymerization product of at least one trialkoxysilane monomer, the thickness of the overlayer corresponding to at least an average weight of about 2 micrograms per square centimeter.
Dependencies are inferred from the claim text.