Method of forming printed image
AssigneeKansai Paint Co., Ltd.
InventorsKoshio Kondo, Koji Takezoe
Life of this patent
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Abstract
Disclosed is a method of forming a printed image, which method comprises coating an electrodeposition coating composition on a plate with a conductive film and for use in a printed circuit to form a photo-sensitive resist film, and exposing the photo-sensitive resist film to light through a pattern mask, followed by development, the surface of said photo-sensitive resist film being colored with a dye.
Claims20
An improved method of forming a printed image in the preparation of a printed-circuit board by a process which comprises applying a photocurable electrodeposition coating composition onto a plate having a conductive film to form a photo-sensitive resist film thereon, and exposing the photo-sensitive resist film to light through a pattern mask to polymerize the coating where exposed to light, followed by development to remove the unexposed coating composition therefrom, the improvement comprising applying a dye to the surface of the photo-sensitive resist film after the application of the photo-curable electrodeposition coating to color the surface of said film.
Dependencies are inferred from the claim text.