METHOD OF AND APPARATUS FOR COATING A THINWALLED PERFORATED CYLINDER WITH A PHOTOSENSITIVE LIQUID LAYER

摘要

A thinwalled perforated cylinder is coated with a layer of a photo-sensitive substance and subsequently dried by a heating treatment, comprising the steps of securing the cylinder between two mounting heads by means of a detachable accessory part at each of its extreme ends, whereupon an annular receptacle containing a coating fluid is axially moved along the outer periphery of the cylinder and the applied layer is dried by a heated accessory part which, after release of the treated cylinder is conveyed to the other mounting head before a fresh cylinder is mounted.