Thermal paper with preprinted indicia
AssigneeNCR Corporation
InventorsWendell B. Halbrook JR., Mary Ann Wehr
Life of this patent
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Abstract
Thermosensitive recording materials such as thermal paper have printed indicia of high quality on the back thereof printed on a backcoating. This backcoating also incorporates an optically variable compound which provides a security feature.
Claims19
A thermosensitive recording material comprising a base sheet, optionally a base coating, a thermosensitive coating on one surface of said base sheet or the surface of said base coating when present, and a backcoating on the surface of the base sheet opposite the thermosensitive coating, wherein said backcoating incorporates an optically variable compound selected from the group consisting of NIRF compounds, fluorescent compounds, thermochromic compounds and photochromic compounds said backcoating additionally having an image printed thereon.
Dependencies are inferred from the claim text.