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AssigneeSeiko Epson Corporation
InventorsKeitaro NAKANO, Takashi OYANAGI, Kazushige INOUE
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The ultraviolet ray irradiation devices are attached to a carriage having a print head that ejects the ultraviolet curable ink, and include a plurality of ultraviolet light sources that irradiate ultraviolet rays onto ink coating ejected on a print sheet by the print head. An ultraviolet ray of the ultraviolet light source that irradiates the ultraviolet ray onto the print sheet in the vicinity of the print head has a wavelength shorter than an ultraviolet ray of the ultraviolet light source that irradiates the ultraviolet ray onto the print sheet apart from the vicinity of the print head along the moving direction of the carriage. The ultraviolet ray irradiation device is capable of sufficiently curing a plurality of ultraviolet curable ink adhered on a recording medium without incurring a problem of blurring or color mixing for a multiple-color printing process such as a full-color printing process. The ultraviolet ray irradiation devices are attached to a carriage having a print head that ejects the ultraviolet curable ink, and include a plurality of ultraviolet light sources that irradiate ultraviolet rays onto ink coating ejected on a print sheet by the print head. An ultraviolet ray of the ultraviolet light source that irradiates the ultraviolet ray onto the print sheet in the vicinity of the print head has a wavelength shorter than an ultraviolet ray of the ultraviolet light source that irradiates the ultraviolet ray onto the print sheet apart from the vicinity of the print head along the moving direction of the carriage. The ultraviolet ray irradiation device is capable of sufficiently curing a plurality of ultraviolet curable ink adhered on a recording medium without incurring a problem of blurring or color mixing for a multiple-color printing process such as a full-color printing process.
An ultraviolet ray irradiation device comprising an ultraviolet light source that irradiates ultraviolet rays onto a plurality of ultraviolet curable ink ejected on a recording medium by a record head,
A method of recoding on a recording medium in multiple colors by using a plurality of ultraviolet curable ink, wherein, when the plurality of ultraviolet curable ink ejected on the recording medium from a record head is to be cured, the ultraviolet ray curable ink is cured by irradiating an ultraviolet ray of the ultraviolet light source that irradiates the ultraviolet ray on the recording medium in the vicinity of the record head which has a wavelength shorter than an ultraviolet ray of the ultraviolet light source that irradiates the ultraviolet ray onto the recording medium apart from the vicinity of the record head.
Dependencies are inferred from the claim text.