| 摘要 |
PURPOSE:To obtain the titled paper having improved preliminary color property and the final coloring density by controlling a layer thickness of a precoat layer, making the sensitized paper to a specific air resistance in the titled paper comprising the photosensitive layer and the precoat layer. CONSTITUTION:The precoat layer is formed by coating a substrate with a solution contg., for example, a pigment and a styreneacryl emulsion, etc., thereby prpeventing to permeate the photosnsitive agent into the substrate. The layer thickness is controlled to about 1-3g/cm<2> by making the solution of the precoat layer high viscosity. The air resistance of the obtd. sensitized paper is made a range of 15-25sec. And then, the photosensitive layer cong. the diazo compd. is mounted on the precoat layer to obtain the titled paper. Thus, as the air resistance of the obtd. sensitized paper is controlled to a specific range, the titled paper having improved preliminary coloring property and the final coloring density if obtd. |
