| 摘要 |
A process in which a photosensitive material containing an ester or an amide of a 1,2-quinonediazidesulphonic or -carboxylic acid and a quaternary phosphonium compound as photosensitive compound is exposed through an image, then heated, exposed again over its entire surface after cooling and then developed with an aqueous alkaline developer. The process makes it possible to produce negative copies with a material which yields positive copies when processed normally. |
