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Light irradiation device and light curing material processing device

A technology of light irradiation device and reflector, which is applied in the direction of lighting device, lighting device, fixed lighting device, etc., and can solve the problem that it is difficult to fully suppress

Inactive Publication Date: 2019-08-16
USHIO DENKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in this inkjet printer, it is necessary to separate the light irradiation device from the nozzle head very significantly
In addition, considering the reflected light on the recording medium, it is difficult to sufficiently suppress the light irradiated to the ejection part of the head by simply tilting the light irradiation device.

Method used

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  • Light irradiation device and light curing material processing device
  • Light irradiation device and light curing material processing device
  • Light irradiation device and light curing material processing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] according to figure 1 and figure 2 With the structure shown, the light irradiation apparatus 1 of the following specification was produced.

[0095] The material of the substrate 21 in the light source unit 20 is aluminum nitride, and the size (X×Y×Z) is 105 mm×20 mm×1.0 mm. The light-emitting element 25 is a light-emitting diode with a peak wavelength of 395 nm, an output of 700 mW, and a size (X×Y×Z) of 1.0 mm×1.0 mm×0.1 mm. The number of light emitting elements 25 is 25, and the arrangement pitch is 4.0 mm. The sealing lens 22 is made of silicone resin and has a radius of 1.1 mm.

[0096] The material of the window member 18 is heat-resistant glass, and the size (X×Y×Z) is 104 mm×15 mm×2.0 mm. The separation distance between the light incident surface of the window member 18 and the light emitting surface 25 a of the light emitting element 25 in the Z-axis direction was 2.9 mm.

[0097] The inclination angle α of the reflection surface 31 of the first reflectio...

Embodiment 2

[0105] In Example 1, the inclination angle α of the reflection surface 31 of the first reflection member 30 relative to the reference plane N was set to 45°, and the inclination angle β of the reflection surface 36 of the second reflection member 35 relative to the reference plane N was set to 45°. A light irradiation device having the same structure as in Example 1 except for 70° (≥α+θmax / 2) was used. The maximum emission angle θmax of the light emitting element 25 in this light irradiation device is 45°.

[0106] As a result of analyzing the incident angle γ of the light component emitted from the light source unit 20 in the Y-axis negative direction at the maximum emission angle θmax to the irradiated surface W in the light irradiation device through the window member 18, it was confirmed that γ=+5° . That is, it was confirmed that the reflected light of the second reflection member 35 does not include a light component directed in the Y-axis negative direction.

Embodiment 3

[0111] In Example 1, the inclination angle α of the reflection surface 31 of the first reflection member 30 relative to the reference plane N was set to 80°, and the inclination angle β of the reflection surface 36 of the second reflection member 35 relative to the reference plane N was set to 80°. Except for 85° (≥α+θmax / 2), a light irradiation device having the same structure as in Example 1 was used. The maximum emission angle θmax of the light emitting element 25 in this light irradiation device was 10°.

[0112] As a result of analyzing the incident angle γ of the light component emitted from the light source unit 20 in the Y-axis negative direction at the maximum emission angle θmax to the irradiated surface W in the light irradiation device through the window member 18, it was confirmed that γ=0°. That is, it was confirmed that the reflected light of the second reflection member 35 does not include a light component directed in the Y-axis negative direction.

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Abstract

A light irradiation device and a photocurable material processing device, which can prevent or suppress light from being irradiated to other adjacent parts, and can realize miniaturization of the whole device. Assuming an XYZ three-dimensional orthogonal coordinate system in which the axis extending in the vertical direction is the Z-axis, the light source unit is configured by arranging a plurality of light-emitting elements on the same plane so that the center of the light-emitting surface is located on the X-axis , the XZ plane including the center of the light-emitting surface of a plurality of light-emitting elements is set as a reference plane, and the position on the negative side of the Y-axis relative to the reference plane is extended in the X-axis direction with a light from the light source part directed to the Y axis. In the positive direction of the axis and the first reflective part with the function of blocking the light directed to the negative direction of the Y axis, and with respect to the position on the positive side of the Y axis relative to the reference plane, in the direction of the X axis, there is a And the second reflective part that reflects the light from the first reflective part to point to the positive direction of the Y-axis.

Description

technical field [0001] The present invention relates to a light irradiation device mounted on, for example, an inkjet printer or a 3D printer, and a photocurable material processing device including the light irradiation device. Background technique [0002] In the past, in the field of printing and electronics industry, etc., in order to perform curing treatment, drying treatment, melting treatment, softening treatment or For modification treatment, etc., a light irradiation device that radiates light of a specific wavelength is often used. [0003] For example, Patent Document 1 discloses an inkjet printer using ultraviolet curable ink. This inkjet printer is equipped with a head that ejects ink, and a light irradiation device that is provided adjacent to the head. In such an inkjet printer, a plurality of ejection sections are provided in the ejection section. In addition, various inks (photocurable materials) are ejected from these ejection units to the recording medi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/01B41J11/00B29C64/264B29C64/20
CPCF21S8/00F21V7/00F21V33/00B29C67/00B41J11/002B41J11/00218B41J11/00214
Inventor 井上隆博
Owner USHIO DENKI KK
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