Curing of photosensitive resin layer

Abstract

Abstract PURPOSE: To produce cured layer having thickness of 100μ or less of good quality in excellent workability and obtain power efficiency by a method wherein liquid photosensitive resin curable by irradiation or ultraviolet ray in the range of wavelength less than 4,500Å is irradiated with specific light energy using flash discharge lamp. CONSTITUTION: Printing ink, coating material, etc. using uncured liquid photosensitive resin having main photosensitive characteristic in the range of wavelength less than 4,500Å is cured by use of ultraviolet ray irradiation. At this time, instead of conventional mercury discharge lamp as ultraviolet ray irradiation source, cold light source of flash discharge lamp consisting of glass tube containing sealed rare gas such as Xe gas and that provides monentarily total design light quantity is applied. Light energy J (Joule) emitted by the discharge lamp is controlled so that 0.02≤J/S≤8 holds where S(cm 2 ) is the area to be irradiated. In this method, no uncured part remains in photosensitized resin, no deterioration occurs to the cured layer surface, and cured layer less than 100μ in thickness is instantaneously formed, thereby providing excellent workability and power efficiency. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Tatsumi Hiramoto

Bibliographic Details