| 摘要 |
PROCESS FOR THE PREPARATION OF PLANOGRAPHIC PRINTING FORMS BY MEANS OF LASER BEAMS This invention relates to an improvement in the process for the preparation of a planographic printing form wherein a recording material comprising a support of anodically oxidized aluminum with an oxide layer weighing at least 3 grams per square meter and a light-sensitive recording layer on the oxide layer is imagewise irradiated with a laser beam, thus rendering the irradiated portions of the recording layer oleophilic and/or insoluble, and the non-irradiated areas of the recording layer are then removed with a developer liquid, the improvement comprising employing a recording layer which comprises a negative-working, light-hardenable, water-soluble diazo compound. |
