| 摘要 |
PURPOSE:To obtain a multicolor pressure sensitive copying sheet of three or more colors which is excellent in coloring property, by a method wherein a capsule coating layer is preliminarily formed on a base material with a coater, and capsule ink by which an image of a different hue is obtained by coloration is printed thereon. CONSTITUTION:A pressure sensitive copying sheet is constructed by assembling, on a sheet layer formed by establishing wholly a microcapsule layer containing color original substance by using a coater, a transfer sheet obtained by locally printing microcapsule ink containing other color original substance which forms an image of a different due from the color original substance when colored, and an acceptor sheet on which a layer containing another color original substance coloring by reacting on the color original substance is set. As a combination of color original substances to be used, for instance, the combination of an electron donative color coupler and an electron acceptive developer is mentioned. Generally, color original substance contained in a capsule coating an upper sheet and a middle sheet is an electron donative color coupler or a ligand compound, and the other color original substance to be used for a lower sheet is the electron acceptive developer or a metal salt. |
