| 摘要 |
PURPOSE:To prevent the falsifying of a no-carbon required paper by combining a sheet provided with a microcapsule layer containing developer and another sheet provided with a colorant layer containing dye to face each other and coloring the coating layers of both supports. CONSTITUTION:A sheet provided on a support with a microcapsule layer containing developer dissolved with novalak phenol resin in metallic salt denatured phenol resin oil and another sheet provided on a support with approximately colorless dye in a colorant reactive with the developer, e.g., 3,3-bis(p-dimethylamonophenyl)-6-dimethylamonophthalide are polymerized, and are written under pressure. The oil containing the developer flowed out from the microcapsule is not transferred nor absorbed instantaneously to the colorant layer due to its viscosity, but the developer oil is intimately contacted with the colorant to be dissolved and to be distributed on the respective sheets. |
