| 摘要 |
PURPOSE:To prevent a sticking from occurring to enhance an image quality and to enable the prevention of noises, by a method wherein, as inorganic pigments used for a thermal recording layer two or more inorganic pigments including a silica are combined. CONSTITUTION:As inorganic pigments used for a thermal recording layer two or more inorganic pigments including a silica are combined. On the other hand, when the silica or the other pigment is used single or when the pigments other than the silica are used in combination with each other, a sticking cannot be eliminated and in some cases the release of the thermal recording layer and irregularities in printing are generated. As the silica used as a part of the inorganic pigments, a powder or colloidal silica can be used. As the inorganic pigments other than the silica, a clay, a zinc oxide, and the like can be used. In addition, the silica is contained in the inorganic pigments 5-50wt.%, preferably the order of 5-20wt.%. If less than 5wt.%, a sufficient anti-sticking effect cannot be obtained; if more than 50wt.%, a printed image is deteriorated in sharpness.
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