Patent ID: 7794075
Filing Date: 2010-09-14
Classification: B41J

Abstract:
1. An ultraviolet ray irradiation device comprising an ultraviolet light source that irradiates ultraviolet rays onto ultraviolet curable ink ejected on a recording medium by a record head and a dividing mechanism including two filters, a first filter that passes the ultraviolet light rays of a first group of ultraviolet rays of shorter wavelengths, and a second filter that passes a second group of ultraviolet rays of longer wavelengths, wherein the dividing mechanism directs the shorter and longer wavelengths toward the recording medium so as to irradiate the recording medium, wherein the ultraviolet ray irradiation device comprises a plurality of ultraviolet light sources, wherein an ultraviolet ray of the ultraviolet light source that irradiates the recording medium in the vicinity of the record head is an ultraviolet light ray of the second group with a wavelength longer than an ultraviolet ray of the first group from the ultraviolet light source that irradiates onto the recording medium apart from the vicinity of the record head.