| 摘要 |
PURPOSE:To make copying high-speed and to improve image quality, by applying a specific developing accelerator to dry type diazo photosensitive paper of two-component type which is applied in an ammonia developing system. CONSTITUTION:An ethylene oxide adduct of polyglycerol (about 600- 6,000mol.wt.) or monoalkyl ether of ethylene oxide-propylene oxide copolymer (1-4C alkyl group) is used as a developing accelerator. Namely, a photosensitive layer consisting of a diazo compound (e.g. 4-diazo-2,5-dimethoxyphenyl morpholine), a coupling component (e.g. 2,3-dihydroxy naphthalene) and the above mentioned developing accelerator (the usage is about 0.1-1g/m<2> as a deposited amount), is provided on a supporting base and the paper is obtained. |
