| 摘要 |
PURPOSE:To improve color-forming speed, formed color density, sun-resistance stability of color-formed image, sun-resistance stability of color-developing surface, plasticizer-resistance stability of color-formed image, etc. by using baked clay calcium carbonate-blended inorg. pigment, and phenol-polymerized coloring agent. CONSTITUTION:A high oil-absorption phenyl copolymer color-developing layer having chemical stability to sun and plasticizer is considered to be formed by an inorganic pigment formulated with baked clay calcium carbonate. That is, it is considered that the formation of such a developing layer is due to the improvement effect of a color-forming physical constitution and the involved development effect of a chemical stability of the phenol copolymer developer layer by a formulated inorganic pigment of baked clay calcium carbonate. |
