| 摘要 |
PURPOSE:To obtain a developing sheet having the excellent characteristics of an org. developer and reduced in the transfer staining due to desensitizing ink by providing an intermediate layer based on pigment whose weighted average value of oil absorbancy is 30ml/100g or more and an adhesive between a developer layer and a support. CONSTITUTION:A coating solution for an intermediate layer based on pigment and an adhesive is applied to a support such as paper, synthetic paper or a film and a coating layer for a developer layer based on an org. developer, an adhesive and pigment is further applied thereon to obtain a developing sheet. The pref. range of the weighted average value of oil absorbancy of the pigment is 30-60ml/100g. As the most pref. pigment, light calcium carbonate is designated. As the electron acceptive org. developer, a salicylic acid derivative and a polyvalent metal salt thereof, a salicylic acid resin and a polyvalent metal salt thereof, salicylic acids, rosins and a polyvalent salt compound composed of a polyvalent metal compound are pref. |
