| 摘要 |
PURPOSE:To improve thermal response by adding a sensitizer and chemical compounds shown by a prearranged chemical formula. CONSTITUTION:A prearranged chemical formula (1) (X, Y represent hydrogen or halogen. R<1>, R<2> the alkylene group- expressed chemical compounds such as shown by, e.g. the formulae (2)-(5) as typical examples. The normal addition of a sensitizer to the developer is 5 or more weight %. The preferable content is 10-400wt%, specially the optimum quantity being 20-300wt%. If the addition is not more than 5wt%, an adequate sensitivity improvement can not be expected. In the meantime, the addition of more than 400wt% sometimes proves uneconomical. |
