A light irradiator and a printer using the light irradiator

A technology of light irradiation and printing, applied in refractors, typewriters, printing devices, etc., can solve the problems of ink viscosity increase and hardening, and achieve the effect of preventing low utilization rate

Inactive Publication Date: 2009-02-04
USHIO DENKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] As described above, in photocurable inkjet printers, since the light emitted from the light irradiator reaches the substrate near the nozzle of the recording head, and the light is reflected by the substrate and reaches the nozzle, there is a problem that the viscosity of the ink increases or hardens.

Method used

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  • A light irradiator and a printer using the light irradiator
  • A light irradiator and a printer using the light irradiator
  • A light irradiator and a printer using the light irradiator

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Embodiment Construction

[0074] figure 1 The structure of the first embodiment of the light irradiator of the present invention is shown. This figure is an enlarged view of the head part, figure 1 (a) is a cross-sectional view in the Y direction (direction orthogonal to the head moving direction), figure 1 (b) is a cross-sectional view in the X direction (direction along the moving direction of the head).

[0075] figure 1 Among them, 10 is a short-arc discharge lamp that radiates light of a wavelength that hardens the ink (liquid material) ejected from the recording head 4 . 20 is a reflector which reflects and condenses the light from the lamp 10, and has a reflective surface in the shape of an ellipsoid of revolution.

[0076] The short-arc discharge lamp 10 is composed of an ultra-high pressure mercury lamp capable of efficiently emitting ultraviolet light with a wavelength of, for example, 300 to 450 nm, and a pair of electrodes are arranged oppositely in the discharge vessel with a dista...

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PUM

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Abstract

The invention relates to an optical irradiator and a printer using the same, to prevent clogging of a nozzle of a printing head, a light irradiator for an ink jet printer is composed of a short arc type discharge lamp (10) and optical elements used for linearly condensing light from the lamp (10), e.g., an elliptic light condensing mirror (20) and a rod lens (30) in order to linearly condense light emitted from the lamp onto a substrate (5). A slit-type light outlet (40) is provided on a bottom plate (60) of a housing (8) so that the direct light from the lamp cannot reach places on the substrate (5) in the vicinity of the nozzle (4) of a printing head (4), and antireflection material (70) is provided on the surface of the bottom plate (60) facing the substrate (5) so that the light emitted from the light irradiator and reflected by the substrate (5) can be absorbed by the antireflection material (70).

Description

field of invention [0001] The present invention relates to a light irradiator that forms a linear and elongated light irradiation area with a short arc lamp, and hardens a photocurable liquid material sprayed on a base material by irradiating light onto an object to be irradiated, and uses the light A printer that sprays light-curable liquid material onto a substrate to form a pattern with an irradiator. Background technique [0002] Since images can be produced easily and inexpensively by the gravure printing method, the inkjet recording method has been used in various printing fields such as photographs, various types of printing, marks, and special printing such as color screening in recent years. [0003] In particular, the inkjet recording method can obtain high image quality by combining an inkjet printer, ink, and special paper. The inkjet printer is a printer of the inkjet recording method that sprays and controls fine dots. The ink is an improved The special paper ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41J3/44H01J61/00F21V5/00F21V11/12
CPCB41J11/002B41J11/00214B41J11/00218
Inventor 仲田重范渡边胜也
Owner USHIO DENKI KK
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