WO2015151852A1 - Unité de source de lumière et procédé de fixation d'encre - Google Patents

Unité de source de lumière et procédé de fixation d'encre Download PDF

Info

Publication number
WO2015151852A1
WO2015151852A1 PCT/JP2015/058438 JP2015058438W WO2015151852A1 WO 2015151852 A1 WO2015151852 A1 WO 2015151852A1 JP 2015058438 W JP2015058438 W JP 2015058438W WO 2015151852 A1 WO2015151852 A1 WO 2015151852A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink
light emitting
emitting module
gloss
led elements
Prior art date
Application number
PCT/JP2015/058438
Other languages
English (en)
Japanese (ja)
Inventor
祥寛 金端
佳久 横川
Original Assignee
ウシオ電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ウシオ電機株式会社 filed Critical ウシオ電機株式会社
Publication of WO2015151852A1 publication Critical patent/WO2015151852A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation

Definitions

  • the present invention relates to a light source unit for an ink jet printer and an ink fixing method, and more particularly to a light source unit for an ink jet printer and an ink fixing method each including a plurality of ultraviolet light emitting modules each having a plurality of LED elements arranged therein.
  • FIG. 8 shows the configuration.
  • the ink jet printer 50 includes an ink jet head 51 that ejects ink onto a print medium M such as paper, and an ultraviolet light source device 52 provided on one side or both sides thereof.
  • the inkjet head 51 and the light source device 52 are arranged above the print medium M by a predetermined distance, suspended on the guide rail 53 and scanned in the transverse direction Y with respect to the print medium M.
  • the UV ink droplets ejected from the inkjet head 51 and attached to the surface of the print medium M are cured by the ultraviolet rays irradiated from the light source device 52. Thereby, the UV ink is colored on the surface of the print medium M in the scanning direction Y of the inkjet head 51. After the UV ink droplets are cured, the print medium M moves in the length direction X by a predetermined distance, and the printing operation is repeated. Thereby, a picture or a character can be formed on the surface of the print medium.
  • the ultraviolet curable ink used in such an ink jet printer includes not only a plurality of color inks for displaying colors but also a gloss ink (clear ink) laminated as an overprint layer on the surface thereof.
  • WO2010 / 098041 Patent Document 2 discloses the following technique for laminating gloss ink on color ink.
  • Step 1 when clear ink is overprinted on color ink, Step 1 for forming a color ink layer, Step 2 for irradiating the color ink layer with weak ultraviolet light (UV light), and the color Step 3 for forming an overprint layer on the ink layer, Step 4 for flattening the surface of the overprint layer, Step 5 for irradiating the overprint layer with weak UV light, the color ink layer and the overprint
  • step 6 when clear ink is overprinted on color ink, Step 1 for forming a color ink layer, Step 2 for irradiating the color ink layer with weak ultraviolet light (UV light), and the color Step 3 for forming an overprint layer on the ink layer, Step 4 for flattening the surface of the overprint layer, Step 5 for irradiating the overprint layer with weak UV light, the color ink layer and the overprint
  • step 6 when clear ink is overprinted on color ink, Step 1 for forming a color ink layer, Step 2 for irradiating the color ink layer with
  • the illuminance of the UV ink irradiating means is one kind of strong (high illuminance) UV irradiation light, as shown in FIG. 9B, this time, strong UV is irradiated to the gloss ink layer. As a result, there is a problem in that unevenness remains on the surface, resulting in generation of cured fringes.
  • the present invention provides a light source unit for an ink jet printer in which a plurality of ultraviolet light emitting modules in which a plurality of LED elements are arranged are arranged in one direction each time ink is dropped.
  • a light source unit for inkjet printers that can cure ink efficiently in a short time without UV radiation and without causing color mixing between multiple types of color inks and without generating streaks on the surface of the gloss ink.
  • the structure and the ink fixing method are provided.
  • the light source unit for an ink jet printer is such that the ultraviolet light emitting module comprises a light emitting module for color ink and a light emitting module for gloss ink, and the ultraviolet illuminance of the light emitting module for gloss ink. Is lower than the ultraviolet illuminance of the light emitting module for color ink.
  • the number of LED elements arranged in each of the light emitting modules is constant, and the current value supplied to the gloss ink light emitting module is made smaller than the current value supplied to the color ink light emitting module.
  • the current value supplied to each of the light emitting modules is constant, and the number of lighting of the LED elements arranged in the light emitting module for gloss ink is set to be larger than the number of lighting of the LED elements arranged in the light emitting module for color ink. It is characterized by less. Further, the number of LED elements arranged in the light emitting module for gloss ink is made smaller than the number of LED elements arranged in the light emitting module for color ink, and all the LED elements of both light emitting modules are turned on.
  • the number of LED elements arranged in each of the light emitting modules is constant, and a part of the LED elements arranged in the light emitting module for gloss ink is lit.
  • the color ink was cured by irradiating with ultraviolet rays from the light emitting module for color ink, and then cured.
  • the gloss ink is dropped onto the color ink from the inkjet head and laminated, the gloss ink is irradiated with UV light having an illuminance lower than that from the color ink light-emitting module. It is characterized by being cured.
  • the color ink light emitting module is scanned and ultraviolet rays having high illuminance are applied to each color ink. Irradiate and cure quickly without causing color mixing, and after the gloss ink is ejected onto the cured color ink, scan the light emitting module for gloss ink and irradiate UV light with lower illuminance. By doing so, the surface of the gloss ink layer can be cured without causing irregularities (cured stripes).
  • FIG. 1 is a circuit configuration diagram of the first embodiment.
  • Bottom view of other embodiment 2 Bottom view of other embodiment 3
  • Layout of light source unit in inkjet printer Operation illustration Explanatory drawing of the effect of the present invention
  • Schematic diagram of inkjet printer Explanatory diagram of defects in conventional technology
  • the light source unit 1 for an inkjet printer of the present invention includes a plurality of ultraviolet light emitting modules 3 a, 3 b, 3 c, and 3 d that are arranged in one direction in a housing 2.
  • the light emitting modules 3a, 3b, 3c, and 3d are arranged side by side in the same direction as the scanning direction (sub-scanning direction) X of the medium M in FIG.
  • three constitute the color ink light emitting modules 3a, 3b, and 3c, and one constitutes the gloss ink light emitting module 3d.
  • the light emitting modules 3a, 3b, and 3c for color ink are examples corresponding to cyan, magenta, and yellow, respectively, but the number of color inks is not limited to these three types, and the light emitting module 3 Are provided in a number corresponding to the type of color ink. Further, the light emitting module for gloss ink 3d is disposed at the end of the array of the light emitting modules 10 (the front side in the sub-scanning direction X) in order to finally dry the gloss ink.
  • Each light emitting module 3 has an LED element substrate 5 on which a plurality of LED elements 4 and 4 are mounted on the surface.
  • the substrate 5 is mounted on a heat sink 6 and is provided above the inside of the housing 2. Cooled by the fan 7.
  • each light emitting module 3 has the same shape, and the number of LED elements 4 arranged therein is also constant.
  • the light emitting modules 3 are arranged in close contact with each other. For example, a method of passing through the heat sink 6 of each light emitting module 3 with a rod and fixing both ends with screws is adopted. At this time, the mounting surfaces of the LED element substrates 5 of the respective heat sinks 6 are aligned so that they are on the same plane, and therefore the LED elements 4 mounted thereon are also located on the same plane. Thereby, the illumination illuminance on the irradiated surface can be made uniform.
  • a connector 10 is disposed on the substrate 5 and supplies power to the LED element 4 via a pattern wiring (not shown).
  • a lead wire connected to the connector 10 is connected to the power supply unit 11, and power is supplied to the LED element 4 in accordance with a lighting command or the like.
  • the electric power feeding part 11 may be arrange
  • FIG. 2 is a diagram showing a circuit configuration of a light emitting module lighting circuit according to the present invention.
  • the lighting circuit includes drive circuits CC1, CC2, CC3, and GC1, respectively, for lighting the light emitting modules 3a, 3b, 3c, and 3d independently.
  • the drive circuits CC and GC are specifically provided with a converter, a switching element, etc., but the details are omitted here.
  • Each drive circuit CC, GC receives lighting signals (target power signals) Sa to Sd from the control circuit S, supplies power to the LED element groups of the light emitting modules 3a to 3d under predetermined conditions, and lights them. To do. Different power (current) can be supplied for each light emitting module 3 depending on the signal to be transmitted.
  • the color ink light emitting modules 3a, 3b, and 3c are lit at the rated current, and the gloss ink light emitting module 3d. Can be turned on at 70% of the current.
  • ultraviolet rays with different illuminances can be emitted from the respective light emitting modules 3, so that the color ink light emitting modules 3a, 3b and 3c emit high illuminance ultraviolet rays, while the gloss ink light emitting module 3d has a lower intensity. It can irradiate ultraviolet rays with illuminance.
  • the number of lighting of the LED elements of the light emitting module 3d for gloss ink is changed to color ink other than changing (lowering) the above-described supply current.
  • This can also be achieved by reducing the number of the LED elements of the light emitting modules 3a to 3c for lighting.
  • the supply current to both the light emitting modules 3 may be constant.
  • FIG. 3 shows a second embodiment for realizing this, and the number of LED elements 4 arranged in the light emitting module 3d for gloss ink is the number of LED elements arranged in the light emitting modules 3a, 3c, 3d for color ink. Less than 4 numbers.
  • FIG. 4 shows still another embodiment 3.
  • the light emission number of the LED element 4 of the gloss ink light emitting module 3d is reduced, and the supplied current value is assumed to be the same as that of the color ink light emitting modules 3a to 3c.
  • the illumination intensity may be lowered by making both the supply current value to the color ink light emitting module 3d and the light emission number of the LED elements smaller than those of the color ink light emitting modules 3a to 3d.
  • FIG. 5 shows an arrangement relationship between the ink jet head in the ink jet printer and the light source unit of the present invention.
  • the light source unit 1 is disposed on both sides of the inkjet head 12.
  • color inkjet nozzles Ic, Im, and Iy that eject a plurality of kinds of primary color inks (cyan, magenta, yellow, etc.) as color inks are arranged along the sub-scanning direction X, which is the medium conveyance direction.
  • the glow inkjet nozzle Ig is arranged on the front side in the sub-transport direction X.
  • the color ink light emitting modules 3 a, 3 b, and 3 c are arranged along the sub-scanning direction X, and the gloss ink light emitting module 3 d is arranged on the front side in the transport direction X.
  • the print head including the light source unit 1 and the inkjet head 12 is scanned in the main scanning direction Y that is the left-right direction on the paper surface. Then, for example, the print medium M, which is paper, is sent out in the sub-scanning direction X that is the vertical direction on the paper surface.
  • the print head With the print medium M being conveyed in the sub-scanning direction X and temporarily stopped at the predetermined position P1, the print head is scanned in the main scanning direction Y. In the region R1, ink of cyan C is discharged from the inkjet nozzles Ic of the inkjet head 12. Is ejected.
  • each color ink is irradiated with rated high-intensity ultraviolet rays each time it is ejected onto the medium, and the colors of each other are mixed.
  • the gloss ink on the cured color ink is irradiated with ultraviolet rays having an illuminance lower than that applied to the color ink and cured slowly, so that no cured stripes are generated. It is cured beautifully.
  • such work can be quickly achieved by an operation with few work steps without using a complicated and large-sized apparatus.

Abstract

[Problème] La présente invention concerne une structure et un procédé de fixation d'encre pour une unité de source de lumière d'une imprimante à jet d'encre que l'on obtient en disposant de multiples modules émetteurs de rayons ultraviolets, dans lequel de multiples éléments à DEL sont disposés en réseau, en une rangée dans une direction, la structure et le procédé de fixation d'encre étant configurés de telle sorte que l'encre peut être durcie de manière efficace en une courte période en procédant à une irradiation de rayons ultraviolets à chaque jet d'encre colorée de telle sorte que de multiples types d'encres colorées ne se mélangent pas les unes avec les autres et que des bandes de durcissement ne se produisent pas sur la surface de l'encre brillante. [Solution] L'unité de source de lumière est caractérisée en ce que les modules émetteurs de rayons ultraviolets sont obtenus par des modules émetteurs de lumière pour encres colorées et un module émetteur de lumière pour encre brillante et l'éclairement à rayons ultraviolets du module émetteur de lumière pour encre brillante est inférieur à l'éclairement à rayons ultraviolets des modules émetteurs de lumière pour encre colorée.
PCT/JP2015/058438 2014-03-31 2015-03-20 Unité de source de lumière et procédé de fixation d'encre WO2015151852A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014071126A JP2015193089A (ja) 2014-03-31 2014-03-31 光源ユニット
JP2014-071126 2014-03-31

Publications (1)

Publication Number Publication Date
WO2015151852A1 true WO2015151852A1 (fr) 2015-10-08

Family

ID=54240182

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/058438 WO2015151852A1 (fr) 2014-03-31 2015-03-20 Unité de source de lumière et procédé de fixation d'encre

Country Status (2)

Country Link
JP (1) JP2015193089A (fr)
WO (1) WO2015151852A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6674863B2 (ja) * 2016-08-10 2020-04-01 株式会社ミマキエンジニアリング 印刷装置及び印刷方法
JP2023043379A (ja) 2021-09-16 2023-03-29 ブラザー工業株式会社 印刷装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009056695A (ja) * 2007-08-31 2009-03-19 Konica Minolta Medical & Graphic Inc インクジェット記録装置
JP2011212917A (ja) * 2010-03-31 2011-10-27 Brother Industries Ltd 報知処理装置、報知処理プログラム
JP2012096377A (ja) * 2010-10-29 2012-05-24 Mimaki Engineering Co Ltd 印刷装置
JP2012106473A (ja) * 2010-10-22 2012-06-07 Mimaki Engineering Co Ltd インクジェット記録装置
JP2013188962A (ja) * 2012-03-14 2013-09-26 Brother Industries Ltd 印刷装置および印刷方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009056695A (ja) * 2007-08-31 2009-03-19 Konica Minolta Medical & Graphic Inc インクジェット記録装置
JP2011212917A (ja) * 2010-03-31 2011-10-27 Brother Industries Ltd 報知処理装置、報知処理プログラム
JP2012106473A (ja) * 2010-10-22 2012-06-07 Mimaki Engineering Co Ltd インクジェット記録装置
JP2012096377A (ja) * 2010-10-29 2012-05-24 Mimaki Engineering Co Ltd 印刷装置
JP2013188962A (ja) * 2012-03-14 2013-09-26 Brother Industries Ltd 印刷装置および印刷方法

Also Published As

Publication number Publication date
JP2015193089A (ja) 2015-11-05

Similar Documents

Publication Publication Date Title
US7758179B2 (en) Inkjet recording apparatus for efficiently lighting semiconductor light emitting elements
US8888270B2 (en) Inkjet recording apparatus and image forming method
JP5041611B2 (ja) インクジェット式記録装置
JP4605770B2 (ja) Ｕｖ硬化型インク使用のプリント方法とそれに用いるインクジェットプリンタ
US8662655B2 (en) Inkjet printer and method for printing
EP2808171B1 (fr) Appareil d'enregistrement à jet d'encre
WO2011099559A1 (fr) Dispositif de formation d'image et procédé de formation d'image
JP2004358769A (ja) Ｕｖインク使用のインクジェットプリンタ
JP2010005934A (ja) 印刷装置及び印刷方法
JP2007125886A (ja) インクジェット印刷の方法およびプリンタ
JP5665481B2 (ja) 画像形成装置及び仮硬化用の活性光線照射装置並びに照度分布の変更方法
JP5378194B2 (ja) インクジェット式画像形成装置
JP2019209494A (ja) 液体吐出装置及び液体吐出方法
WO2015151852A1 (fr) Unité de source de lumière et procédé de fixation d'encre
EP2955028B1 (fr) Appareil d'impression et procede d'impression
JP5848683B2 (ja) 画像形成装置及び画像形成方法
EP3115208A1 (fr) Appareil d'impression à jet d'encre
JP2012025116A (ja) 画像形成装置及び方法
JP2019177551A (ja) 紫外線照射装置
JP2011161824A (ja) インクジェットプリンタ及び印刷方法
JP2011062905A (ja) 印刷装置
KR100470929B1 (ko) 디지털 프린팅머신의 헤드구조
WO2021141076A1 (fr) Appareil d'éjection de liquide et procédé d'éjection de liquide
US20240092095A1 (en) Method for enhancing adhesion of a uv curable ink
JP2012166454A (ja) インクジェット記録装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15773652

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase
122 Ep: pct application non-entry in european phase

Ref document number: 15773652

Country of ref document: EP

Kind code of ref document: A1