| 摘要 |
PURPOSE:To provide a heat sensitive recording material capable of being preserved for clear recording for long time with excellent decoloring resistance and waterproofness by sequentially forming a heat sensitive coloring layer containing a colorless leuco body and acidic substance, a coating layer containing water soluble high molecular compound, hydrophobic high molecular compound and the like, on a supporting body. CONSTITUTION:A heat sensitive coloring layer containing as coloring ingredients colorless or pale leuco body (such as, for example, triphenylmethane series, fluorane series or the like) and acidic substance coloring upon thermal reaction with the leuco body (such as, for example, bis-phenol A or the like), and a coating layer containing water soluble high molecular compound (for example, PVA or the like), preferably 10-50wt% of hydrophobic high molecular compound (for example, styrene-acrylic acid ester or the like) and/or 5-50wt% of waterproof agent (for example, glyoxal or the like) are sequentially formed on a support, thereby obtaining the material for the purpose. USE:Sheet for automatic ticket issuing machine for a commutation ticket or the like, and a bar code sheet or the like for a POS system. |
