| 摘要 |
PURPOSE:To attain to enhance the color fading property of an image, by containing a hydrazone coupler in a coupler layer along with a divalent metal compound capable of chelating a coupling product. CONSTITUTION:A thermal color forming layer contains a diazo layer and a coupler layer separately and a water-insoluble binder is contained in a layer (the diazo layer or the coupler layer) for forming a lower layer among both layers. In addition, a divalent metal compound capable of chelating a coupling product is further contained in the coupler layer along with a hydrazone coupler. By this method, the color fading property of an image is enhanced. |
