A process for the preparation of a printing form for the gravure printing, screen printing, flexographic printing or offset printing

摘要

A process for the preparation of a printing form for the gravure printing, screen printing, flexographic printing or offset printing, with the following process steps:a) the surface (10) of the layer support (1), with a photopolymerizable layer (2) covered,b) on the photopolymerizable layer is a first transparent thermosensitive mask layer (3) is applied, in which by means of a according to electronically stored data controlled thermally effective laser beam (33), of the mask layer in the irradiated regions opaque to light, a photomask having a positive - or negative - image of the desired printed image of the printing form is produced,c) by means of the photoresist mask which is passed through the photopolymerizable layer (2) under the polymerization in the exposed areas exposed,d) the imagewise exposed layer (2) is developed or a detachment process in the exposed or subjected to the unexposed areas,characterized by the,that the mask layer (3) directly on the photopolymerizable layer (2) is applied and that the material of the mask layer (3) a as a coating on papers..