LIGHT IRRADIATION APPARATUS AND PRINTING APPARATUS

• US 20150276196A1
• Filed: 08/29/2013
• Published: 10/01/2015
• Est. Priority Date: 08/31/2012
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Uchida, Shinya
• Granted Patent: US 9,371,984 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B41J 11/0015 for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing selective coating B41J2/2114
• CPC Class Codes: B41J 11/00216 using infrared [IR] radiation or microwaves
• CPC Class Codes: B41M 7/0072 using mechanical wave energy, e.g. ultrasonics; using magnetic or electric fields, e.g. electric discharge, plasma
• CPC Class Codes: B41M 7/0081 using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
• CPC Class Codes: B41M 7/009 using thermal means, e.g. infrared radiation, heat
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 29/51 using condensation or evaporation of a fluid, e.g. heat pipes
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21W 2131/403 for machines
• CPC Class Codes: H01L 2224/45144 Gold (Au) as principal constituent
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/73265 Layer and wire connectors
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details

Abstract

A light irradiation apparatus includes a housing configured to house a light irradiation device including a plurality of light-emitting elements arranged, a drive substrate having a circuit to which a constant current generation device is electrically connected, a heat dissipation member having a plate-shape, and a cooling pipe. The light irradiation device is disposed on one main surface of the heat dissipation member, and the constant current generation device is disposed on the other main surface of the heat dissipation member or on the drive substrate, the drive substrate being disposed on the other main surface of the heat dissipation member.

Claims

1. A light irradiation apparatus, comprising:

a housing configured to house

a light irradiation device comprising a plurality of light-emitting elements arranged;

a drive substrate which is configured to drive the plurality of light-emitting elements, and comprises a circuit to which a constant current generation device is electrically connected;

a heat dissipation member having a plate-shape; and

a cooling pipe configured for allowing a refrigerant to flow into the heat dissipation member,

wherein

the light irradiation device is disposed on one main surface of the heat dissipation member, and

the constant current generation device is disposed on the other main surface of the heat dissipation member or on the drive substrate, the drive substrate being disposed on the other main surface of the heat dissipation member.

2. The light irradiation apparatus according to claim 1,

wherein the housing has

a first space that houses the light irradiation device, the constant current generation device, the heat dissipation member and the cooling pipe, and

a second space that houses the drive substrate.

3. The light irradiation apparatus according to claim 2,

wherein the first space has a through-hole that passes through the second space, and the cooling pipe is disposed within the through-hole.

4. The light irradiation apparatus according to claim 1,

wherein the constant current generation device is disposed on the other main surface of the heat dissipation member by an intermediary of an insulating material.

5. The light irradiation apparatus according to claim 2,

wherein the first space and the second space are partitioned with a partition wall including a heat insulating material with a thermal conductivity equal to or lower than 0.1 W/(m·

K).

6. A printing apparatus, comprising:

conveying means that conveys a recording medium having light permeability;

printing means that carries out printing on a recording medium with an ultraviolet curable ink or an ultraviolet curable resin; and

the light irradiation apparatus according to claim 1 that irradiates the recording medium printed with light.