Heat transfer sheet
AssigneeDai Nippon Insatsu Kabushiki Kaisha
InventorsMasaki Kutsukake, Mineo Yamauchi, Masanori Akada
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Abstract
This invention relates to a novel heat transfer sheet. By providing a heat-resistant protective layer comprising specific ingredients on a first surface of a base sheet having a heat transfer layer on a second surface thereof, there is obtained a heat transfer sheet wherein the running of a thermal head is smooth during recording; wherein an image having a high density and exhibiting no surface roughness at printing areas can be provided; wherein when the heat transfer sheet is wound up and stored, a dye does not migrate to the heat-resistant protective layer; and wherein the adhesion between the heat transfer sheet and a roll or the like does not occur within travelling apparatus.
Claims10
A heat transfer sheet comprising a heat transfer layer provided on one surface of a base sheet, and a heat-resistant protective layer provided on the other surface of said base sheet, said heat-resistant protective layer containing (a) polyvinyl butyral, (b) an isocyanate, and (c) a compound selected from the group consisting of phosphoric esters, its alkali metal and alkalie earth metal salts, and mixtures thereof.
Dependencies are inferred from the claim text.