Manufacture of gravure cylinder made of synthetic resin

Abstract

Abstract PURPOSE:To obtain an accurate cylinder in a short time by exposing a cylinder with a photosetting resin and an an image forming layer formed in order on the surface to laser beams to form an image and removing the unset resin by development. CONSTITUTION:The surface of metallic cylinder 1 is coated with photosetting resin 2, and on resin 2 thin metallic layer 3 for forming an image is formed. Cylinder 1 is exposed by a scanning system using laser to form image 3a, and it is uniformly exposed to a mercury lamp having 2kW high voltage for about 2min. As a result, resin 2a of a part irradiated with light through the image is set. Light shielding film 3 is then peeled off with a peeling liq. such as hydrochloric acid in case where layer 3 is made of nickel. By carrying out development with a developer, unset resin part 2b is removed to form a cell, and finally the cell is post-exposed and baked.

Inventors

• 👤 Akihiko Tanaka

Bibliographic Details