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US 4,308,318 AGranted
Rub resistant ribbon for non-impact printing
AssigneeInternational Business Machines Corporation
InventorWilliam J. Weiche
Life of this patent
Estimating the term…
Abstract
A ribbon for non-impact printing comprising an electrically conductive substrate and a transfer layer which comprises a polymerized fatty acid polyamide.
Claims3
A ribbon for non-impact printing comprising an electrically conductive substrate and a transfer layer which comprises coloring material and a polymerized fatty acid polyamide.
Dependencies are inferred from the claim text.