Thermal recording sheet and thermal recording sheet pack
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United States of America Patent
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Nov 17, 2009
Grant Date -
Aug 30, 2007
app pub date -
Oct 15, 2004
filing date -
Oct 15, 2003
priority date (Note) -
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Abstract
A thermal recording sheet comprising, on one surface of square, transparent film, a thermal recording layer containing leuco dye and a coloration agent and a protection layer mainly containing water-based resin, wherein corner parts (1a, 1b, 1c, 1d) including at least one marked corner part (1a) are provided at its four corners. The corner parts (1a, 1b, 1c, 1d) respectively have end edges each with radius of curvature of at least 5 mm, and the end edge of the marked corner part (1a) is provided substantially with a maximum radius of curvature or a minimum radius of curvature.
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