| 摘要 |
PURPOSE: To provide a developer capable of processing negative and positive photosensitive planographic printing plates in common, enhancing the gradient and developing capacity of the printing plate and further capable of being concentrated. CONSTITUTION: Negative and positive photosensitive planographic printing plates are processed in common with this aq. alkaline photosensitive planographic printing plate developer contg. a compd. shown by the formula (n is 9 or 10). |
