| 摘要 |
PURPOSE:To obtain the thermo-sensitive recording material, thermal response property thereof is excellent, the fog of foundation thereof is little and color formation property thereof is superior, by making the grain size of leuco dyestuffs as the color-forming component of a thermo-sensitive color-forming layer and an acidic substance as a developing component uniform within the range of 1-2mu. CONSTITUTION:The aimed thermo-sensitive recording material is acquired by forming the thermo-sensitive color-forming layer while using materials of which the grain size of the leuco dyestuffs and the acidic substance color-forming the leuco dyestuffs when heating is within the range of 1-2mu as principal ingredients. The grain size of the leuco dyestuffs and the acidic substance is adjusted as follows; that is, these components are each mixed with a proper disperser such as water together with a dispersion assistant agent as necessary, and pulverized up to 0.3-40mu or smaller by means of a pulverizing and dispersing machine, such as a ball mill, an attriter, etc., each disperser obtained is filtered by means of a proper filter medium such as a membrane filter, and the materials, grain size thereof is within the range of 1-2mu, are recovered. The dispersers are adjusted, applied onto a substrate and dried, and the aimed recording material is acquired. |
