| 摘要 |
PURPOSE:To provide a heat sensitive recording material improved in image stability, obtained by providing a heat sensitive color forming layer containing a colorless or a light colored leuco dye and a specific developer on a support. CONSTITUTION:An aqueous solution or an aqueous dispersion containing a colorless or a light colored leuco dye [e.g., 3,3-bis(P-dimethylaminophenyl)-phthalide], an acidic substance (e.g., boric acid), an organotin compound {e.g., dibutyltin bis[3-(1-4C)alkoxybutyl mercaptopropionate]} as a developer, an water soluble binder (e.g., PVA), a filler (e.g., silica), a lubricant (e.g., linseed oil) and a heat softening conditioner (e.g., stearic amide) is applied onto a support and dried to form a heat sensitive color forming layer. |
