| 摘要 |
PURPOSE:To obtain a ground stability with superior whiteness and stably developed image color by using a specific phenol compound as a developer. CONSTITUTION:A phenol compound shown by a formula is used as a developer. In the formula, R is alkylene, aralkylene, alkynelene or phenylene. Only one type or a mixture of at least two different types of leuco dye are applied. The preferable type of leuco dye is, for instance, leuco compounds of triphenyl methane dye. |
