Thermal recording sheet and thermal recording sheet pack

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.

Description

technical field [0001] The present invention relates to a thermosensitive recording sheet using a color reaction of a leuco dye and a developer, and a pack (packaging body of a thermosensitive recording sheet bundle) containing the thermosensitive recording sheet bundle. Background technique [0002] Thermosensitive recording sheets that use the color reaction of a leuco dye and a color developer are relatively cheap, and the recording equipment corresponding to this thermal recording sheet is compact and easy to maintain, so it has been used as a fax recording medium or a word processor and a printing recording medium for computers. has been widely applied. [0003] Furthermore, recently, as an alternative recording medium for medical image recording typified by medical X-ray radiography, the silver salt film has been used as a heat-sensitive recording sheet excellent in transparency and recording quality. [0004] As a conventional silver salt film for medical image recor...

AI Technical Summary

Problems solved by technology

However, when the thermal recording pack is used in a vertical position, it is necessary to vertically install the thermal recording pack at the recording sheet collection part of the image recording device, and there is a problem that it is difficult to reliably install the existing thermal recording pack.

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