JP3127748U - Inkjet device for large inkjet printer - Google Patents

Abstract

An object of the present invention is to prevent UV light that cures printed ink from being applied to an ejection port of an inkjet head, thereby preventing the ink from being cured at the ejection port.
In an ink jet apparatus, an ink jet unit is fixed on a base, the ink jet unit is provided with a plurality of ink jet heads 32, a UV light projector 4 is provided on a side surface of the base, and a surface of an object to be printed An opening for projecting UV light is arranged.
A light reflecting component 5 having an inclined surface is installed between the ejection port of the inkjet head and the opening at the bottom of the UV light projector to shield the scattered UV light and prevent the ejection port of the inkjet head from being irradiated.
[Selection] Figure 3

Description

  The present invention relates to an ink jet device for a large ink jet printer, and is intended to respond to a demand for miniaturization, prevent UV light from being irradiated to an ejection port of an inkjet head, and smoothly eject ink from the ejection port. .

  Known printer printing methods are in the form of print heads, and are generally divided into three types: ink jet, thermal transfer, and dot. Among them, an ink jet printer has a base that is reciprocated under control on a sliding platform of a machine base, a plurality of ink bottles are installed above the base, and a plurality of ink bottles are installed below the base. An ejection head corresponding to each ink bottle is installed. The ink is printed on the object through the ejection port at the bottom of the ejection head, and further, UV light is projected downward by the UV light projection device on the side of the base. Prevents the cured ink from affecting the print quality.

  However, a known large-scale inkjet printer has a UV light projection device arranged on the side surface of the base, and the UV light emitted by the UV light projection device and the surface of the object to be printed are in a positional relationship where the scattered light directly reaches. Therefore, when UV light irradiates an object, the generation of these scattered lights cannot be prevented, and it irradiates the ejection port of the ejection head, the ink on the ejection port is cured, and the ink does not come out smoothly, and the printing effect Has a big impact on

In order to prevent the above-mentioned problem, the current method provides a certain distance between the light beam outlet of the UV light projector and the nozzle of the jet head. For this reason, the volume of an ink jet printer becomes large and it does not meet the demand for miniaturization.
JP 2004-167793 A

    The problem to be solved is that the entire size of the inkjet printer cannot be reduced because it is necessary to install the UV light device and the ejection head at a distance from each other.

  The present invention fixes an ink jet unit on a base. This inkjet unit has a plurality of inkjet heads and ejects ink onto the surface of the object to be printed. A UV light projection device is installed on the side surface of the base, UV light is projected downward through an opening at the bottom of the UV light projection device, and the ink on the surface of the object to be printed is irradiated and cured. In the present invention, a light reflecting component is installed between the above-described ejection port of the inkjet head and the opening at the bottom of the UV light projector, and the scattered UV light is applied to the ejection port of the inkjet head to cure the ink on the ejection port. The most important feature is to prevent this.

The ink jet device of the large ink jet printer of the present invention has the following advantages.
The present invention prevents the scattered UV light from irradiating the jet head of the inkjet head by the light reflecting action of the light reflecting component, and the ink on the jet head is cured and the ink is smoothly discharged from the jet head. Without extending the service life of the inkjet head.
In the present invention, the light reflecting component is installed between the ejection port of the inkjet head and the opening at the bottom of the UV light projection device, and the scattered UV light is blocked, thereby suppressing the increase in size and the size of the device. .
The present invention is convenient in use because it is not necessary to process the base or UV light projection device by installing a light reflecting component on the bottom of the partition plate added to the outside and applying it to the ink jet device. .

  The main object of the present invention is to provide an ink jet device for a large ink jet printer, in which a light reflecting component is installed between an ink jet head ejection port and an opening of a UV light projection device, and scattered UV light is ejected from the ink jet head. The ink on the ejection port is prevented from being cured by being irradiated, and the ink is smoothly ejected from the ejection port, thereby extending the service life.

  For the above purpose, an ink jet device of a large ink jet printer according to the present invention comprises a base, an ink jet unit, and at least one UV light projection device, the ink jet unit being fixed on the base, and a plurality of ink jet units. An inkjet head is provided, and jet printing is performed on the surface of the object to be printed. The UV light projection device is fixed to the side of the base, and an opening is formed in the bottom of the UV light projection device. From there, the UV light source is directed downward to irradiate the ink on the surface of the printed object and cure quickly. Let The main feature of the present invention is that a light reflecting component is installed between the ejection port of the inkjet head and the opening of the UV light projection device, and the UV light is irradiated to the ejection port of the inkjet head and the ink on the ejection port is cured. The ink is prevented from being blocked and the ink is smoothly ejected from the ejection port.

  In implementation, the above-described UV light projector includes at least one UV light source housed in a UV light source fixing base. In addition, the light reflecting component is provided with a ridge having a plurality of inclined surfaces, and the light reflecting component is installed at the bottom of the base or at the bottom of the UV light projector, and either UV light is emitted. Has a blocking effect.

Furthermore, the present invention includes a partition plate, which is placed between the side surface of the base and the UV light source fixing base, and is installed on a light reflecting component at the bottom of the partition plate to shield UV light. Then, UV light is applied to the ejection port of the inkjet head to prevent the ink on the ejection port from being cured and blocked.
〔Example〕

  1 and 2 show an embodiment of an ink jet device 1 of a large ink jet printer according to the present invention, which has a base 2, an ink jet unit 3, and two UV light projection devices 4. FIG.

  The base 2 is a housing frame composed of several flat plates and is connected to a movable platform (not shown) of a large-sized inkjet printer. The ink jet unit 3 includes a plurality of ink bottles 31 fixed above the base 2 and a plurality of ink jet heads 32 fixed below the base 2. The uppermost end of the inkjet head 32 and the ink bottle 31 communicate with each other. When ink is supplied, the ink is ejected by a controlled operation from an ejection port provided at the bottom end of the inkjet head 32. The base 2 reciprocates on the sliding platform of the large inkjet printer to print the ink on the surface of the printed object 9.

  Each of the two UV light projection devices 4 includes a UV light source fixing base 41 and a UV light source 410 accommodated in at least one UV light source fixing base 41. Each of the UV light source 410 fixing bases 41 is fixed to both sides of the base 2, and these UV light source 410 fixing bases 41 are provided with openings 411 from which UV light emitted by the UV light source 410 is directed downward. Irradiate the ink on the surface of the printed object 9 to quickly cure the ink.

  The light reflecting component 5 is installed between the ejection port of the inkjet head 32 and the opening 411 at the bottom of the UV light projector 4. The light reflecting component 5 includes a plurality of ridges 52 formed with a plurality of parallel and inclined surfaces. In the present embodiment, the light reflecting component 5 is provided to be coupled to the bottom of the base 2, but in practice, it is directly molded to the bottom of the base 2. As shown in FIG. 3, when UV light emitted from the UV light source of the UV light projection device 4 is directed downward and is irradiated onto the surface of the printed object 9, scattering is caused by the light reflecting action by the plurality of inclined surfaces 51 of the light reflecting component 5. The UV light that has become light is applied to the ejection port of the inkjet head 32 to prevent the ink on the ejection port 32 from being cured and blocked.

  FIG. 4 shows another coupling state of the light reflecting component 5, in which a partition plate 6 is installed between the side surface of the base and the UV light source fixing base 41, and the light reflecting component 5 is installed in the partition plate 6. Connect to the bottom of the. This light reflecting component 5 is also processed and molded directly on the bottom of the partition plate 6 to obtain the effect of blocking the UV light and preventing the ink from curing.

  Based on the above contents, the present invention not only fulfills the desired task and responds to the demand for miniaturization, but also prevents the UV light from being irradiated to the ejection port of the inkjet head, and smoothly from the ejection port. An ink jet apparatus for a large ink jet printer that ejects ink is provided.

It is a three-dimensional external view of an embodiment of the present invention. It is a local enlarged view of A part of FIG. It is a use state figure of an example of the present invention. It is another use condition figure of an example of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inkjet apparatus of large-sized inkjet printer 2 Base 3 Inkjet unit 31 Ink bottle 32 Inkjet head 4 UV light projection apparatus 41 UV light source fixing base 410 UV light source 411 Opening 5 Light reflection component 51 Inclined surface 52 Projection 6 Partition plate 9 Printed object

Claims (6)

An inkjet unit comprising a plurality of inkjet heads fixed on a base, and at least one UV light projection device;
UV light is applied to an inkjet device of a large inkjet printer that prints by jetting ink onto the surface of the object to be printed, and irradiates the ink on the surface of the object to be printed with UV light downwardly from the opening at the bottom of the UV light projector. The reflective surface for shielding UV light The reflective surface for shielding UV light The reflective surface for shielding UV light The reflective surface for shielding UV light reflected from the print surface is provided between the ejection port of the inkjet head and the opening at the bottom of the UV light projector. Install light reflecting parts,
An ink jet apparatus for a large ink jet printer, wherein the ink on a jet port of an ink jet head is prevented from being cured by reflected UV light.   2. An ink jet apparatus for a large ink jet printer according to claim 1, wherein the reflecting surface for shielding the UV light of the light reflecting component comprises a ridge having a plurality of inclined surfaces.   2. The ink jet apparatus of a large ink jet printer according to claim 1, wherein the light reflecting component is installed at a bottom portion of a base.   2. The ink jet apparatus of a large ink jet printer according to claim 1, wherein the light reflecting component is installed at the bottom of the UV light projection apparatus.   5. The inkjet apparatus of a large inkjet printer according to claim 1, wherein the UV light projector includes a UV light source fixing base and at least one UV light source accommodated in the UV light source fixing base.   6. The ink jet apparatus of a large ink jet printer according to claim 5, wherein the light reflecting component is installed on a partition plate, and the partition plate is installed between the side surface of the base and the UV light source fixing base.

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