Curing of photosensitive resin layer

Abstract

Abstract PURPOSE: To produce cured layer of thickness more than 100μ having good quality in excellent workability and providing power efficiency by a method wherein liquid photosensitive resin curable by irradiation of 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 mateial, etc. utilizing uncured liquid photosensitive resin having main photosensitive characteristic in the range of wavelength less than 4,500Å is cured by the use of ultraviolet ray irradiation. At this time, instead of the conventional mercury discharge lamp, a flash discharge lamp comsisting of glass tube containing sealed rate gas such as Xe gas and that provides momentarily total design light quantity is applied as ultraviolet ray irradiation source. Emitted light energy J (Joule) is controlled so that 0.002≤J/Sd≤2 holds, where S(cm 2 ) is the area to be irradiated and d(μ) is the thickness after cured. Liquid photosensitive resin exceeding 100μ thickness can be instantaneously formed into good cured layer without needing long operation time. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Tatsumi Hiramoto

Bibliographic Details