| 摘要 |
PURPOSE: To provide a heat-developable type copying material less probable to cause background stains and background fog less than that in the conventional ones and capable of obtaining a high image density. CONSTITUTION: The heat-developable type copying material has a recording layer formed on a support and the recording layer contains at least a photosensitive diazo compound enclosed in microcapsules made at least from isocyanate represented by the formula and a coupling component to be allowed to develop color by reaction with the diazo compound. |
