| 摘要 |
PURPOSE:To achieve the rise of chemical resistance, by containing minute fibrous cellulose in the overcoat layer having film forming high molecular compound provided on the heat sensitive coloring layer as main component. CONSTITUTION:Minute fibrous cellulose is contained in the overcoat layer with the chemical resistant heat sensitive recording sheet for which the heat sensitive coloring layer having colorless or light colored dyestuff precursor and developer coloring the dyestuff precursor by reaction when heated as principal constitutional elements, is provided and further the overcoat layer having principally film forming high molecular compound is provided on this heat sensitive coloring layer. For this heat sensitive recording paper, the coating liquid is prepared by a method wherein phenol substance or organic acid and dyestuff precursor coloring with phenol substance or organic acid and separately, or otherwise at the same time ground to be dispersed in minute particulate, mixed with binder, pigment, etc. and added with various additives, if necessary. For the binder, starch or the like are used. For the material forming the overcoat layer, water-soluble high molecular compound is, as a rule, used. The added amount of minute fibrous cellulose into the overcoat layer shall be 0.3wt% min. |
