| 摘要 |
<p>The photosensitive plate is obtained by introducing the resinous photosensitive composition into a bag made from transparent film and by placing thereafter the thus obtained bag between two parallel pressure plates to achieve the planarity of the two surfaces of the bag, and then subjecting the resulting plane envelope to the action of light with the interposition of a suitable negative. The use of the bag according to the invention allows to avoid all the conventional operations of preparation of the printing plates. <IMAGE></p> |
