Patent ID: 6300277
Filing Date: 2001-10-09
Classification: B41M

Abstract:
A thermosensitive recording material comprising a coloring layer which is formed overlying a substrate and which comprises a leuco dye and a color developer which can make the leuco dye color upon application of heat, wherein the thermosensitive recording material has a thermal property such that the coloring layer achieves a colored state having an image density (1) not lower than about 1.20 when the coloring layer is heated with a thermal printhead upon application of a recording energy of 0.45 mJ/dot, and the coloring layer achieves a colored state having an image density (2) which is not less than about 0.1 lower than the image density (1) when the coloring layer is heated by being brought into contact with a heated block at a temperature of 150.degree. C. for 1 second upon application of a pressure of 2 kg/cm.sup.2, the coloring layer further comprising a pigment having an oil absorption of from about 130 ml/100 g to about 200 ml/100 g, and at least one of the leuco dye and the color developer having a melting point not less than about 180.degree. C.