Thermographic overcoat layer and thermographic image recording members
AssigneePolaroid Corporation
InventorsJohn M. Hardin, Fariza B. Hasan, Alma J. Padilla, Michael A. Young
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Abstract
There is described a protective overcoat material comprising from about 40 weight percent to about 85 weight percent of poly(methyl methacrylate) having a Tg above about 100° C., from about 10 weight percent to about 50 weight percent of poly(ethyl methacrylate) having a Tg of from about 52° C. to about 65° C. and about 1 weight percent of a melt flow modifier. Also described are thermal image recording members which include a protective overcoat layer.
Claims13
A thermal image recording member comprising a substrate carrying a layer bearing an image and a protective overcoat layer overlying said image, said protective overcoat layer comprising from about 40% to about 85% by weight of poly(methyl methacrylate having a Tg above about 100° C., from about 10% to about 50% by weight of poly(ethyl methacrylate) having a Tg of from about 52° C. to about 65° C. and about 1% by weight of a melt flow modifier.
A protective overcoat material for an image formed by a thermal imaging method comprising a substrate carrying an overcoat layer comprising from about 40 weight percent to about 85 weight percent of poly(methyl methacrylate) having a Tg above about 100° C., from about 10 weight percent to about 50 weight percent of poly(ethyl methacrylate) having a Tg of from about 52° C. to about 65° C. and about 1 weight percent of a melt flow modifier.
Dependencies are inferred from the claim text.