| 摘要 |
PURPOSE:To eliminate irregular coloring and to prevent the pulp color of yellow or grey from coming to the surface of a non-coloring part by laying a white coating layer between a base and a developer layer. CONSTITUTION:In the developer medium 1, the white coating layer 4 is laid between the base 2 and the developer layer 3. Since the developer layer 3 has the white coating layer 4 on the base 2, the calendered base 2 has the white non-coloring part. To calendar the base, uniform pressure is applied thereto at this time to prevent coloring irregularity. In addition, yellow or grey of pulse itself being material of paper never comes to the surface of the coloring part of a picture. Even if the uncalendered base 2 is employed, its coloring irregularity is less than in conventional ones, because the white coating layer 4 smooths the surface. |
