KR20120006353U - Inkjet apparatus for nano environment-friendly inkjet ink - Google Patents

Abstract

An inkjet device fixed to an inkjet printer for printing nano inkjet ink on a rigid substrate includes a kind of nano inkjet ink, an inkjet unit, a piezoelectric unit, and an ink control unit, the ink control unit having a full-push-pull inkjet action. Electrically control the piezoelectric unit, the inkjet unit having a container filled with nano inkjet ink and a nozzle driven by the piezoelectric unit; Inkjet inks containing nano-sized ink particles with higher transparency, wider color gamut, lower ink bleeding and faster drip-drying, if the ink control unit is initiated, It is ejected from the nozzle of the inkjet unit in shape and printed on a flat printable substrate.

Description

Inkjet device for nano-friendly inkjet ink {INKJET APPARATUS FOR NANO ENVIRONMENT-FRIENDLY INKJET INK}

The present invention relates to an inkjet device for nanoenvironmentally friendly inkjet inks, and more particularly, to an inkjet device capable of spraying nanoenvironmentally friendly inkjet inks printed on rigid substrates.

In the prior art, inkjet inks can be classified as liquid inks, solvent based inks and ultraviolet curable inks according to their composition. Liquid inks are characterized by their low cost, pollution-free and glossy color, but are the water whose main components slowly evaporate and are difficult to absorb into drip-dry and rigid substrates. Therefore, it is generally used on flexible substrates such as coated paper and fiber (cloth) based materials.

Moreover, liquid inks are known to lack their weathering properties and are generally used indoors; Solvent-based inks are generally used in outdoor environments. The main component of the solvent-based ink is generally an organic solvent (eg a mixed solvent of ester and ketone materials), and in the bonding process to the substrate, the ink swells to bond the pigment in the ink to the substrate and onto the substrate. It melts and therefore does not need to have a coating on the PVC base, and the ink can be firmly attached to the substrate and can allow high speed printing needs. However, solvent-based inks have the disadvantage that they are not environmentally friendly due to the high proportion of volatile organic solvents, and their applicability is limited in the long run.

In addition, the ink is discharged by the inkjet device. Traditionally, inkjet techniques of inkjet devices can be classified into thermal bubble inkjet and piezoelectric inkjet. In thermal bubble inkjet technology, ink passes through a thin nozzle and a portion of the ink is vaporized to form bubbles by thermal resistance to discharge ink in the nozzle to the surface of the object to form a pattern or texture. In piezoelectric inkjet technology, a plurality of piezoelectric ceramics are disposed around the printer nozzle of the inkjet device, and a voltage is applied to the piezoelectric ceramics so that deformation warpage occurs in the piezoelectric ceramics, thereby increasing the pattern or texture required. Ink is sprayed from the nozzle to the surface of the object to form. However, inkjet technology has several drawbacks and the ink contained is the main cause. For example, low quality ink can cause printer nozzle clogging in an inkjet process, and some ink can be consumed to flush the nozzle to prevent nozzle clogging, which contradicts the economics of using ink.

Therefore, in view of the conventional problems mentioned above, there is a need for an ink jet apparatus having a specific ink combination for solving the above mentioned problems.

It is an object of the present invention to provide an inkjet device suitable for using innovative nano-friendly inkjet inks to achieve higher transmissivity, wider color gamut (WCG) and faster drip-dry, where the inkjet ink is red And nano-sized ink particles consisting of selected from the group consisting of pigments, yellow pigments, blue pigments, black pigments and green pigments.

Another object of the present invention is to provide an inkjet device comprising an inkjet unit, a piezoelectric unit and an ink control unit to allow inkjet ink to be discharged in a high resolution shape of nano-sized ink droplets and printed on a rigid substrate.

It is yet another object of the present invention to provide an inkjet device suitable for printing nano inkjet inks directly on a rigid substrate, without having to be limited to a rigid substrate having a suitable coating material useful for good printability.

It is yet another object of the present invention to provide an inkjet device for releasing nano inkjet ink that is printed on a rigid substrate in the presence of low surface tension and in the presence of flattening.

To achieve the above objects of the present invention, the present invention provides an inkjet device for nano-friendly inkjet inks, which is secured to low viscosity inkjet printers for printing rigid substrates, which produce nano-sized ink particles. A kind of ink, an inkjet unit, a piezoelectric unit, and an ink control unit.

The nano-sized ink particles of the ink having high permeability and a wide color range consist of one selected from the group consisting of red pigments, yellow pigments, blue pigments, black pigments and green pigments. Then, the inkjet unit has a nozzle and a container, the container contains ink, and the nozzle discharges the ink to the substrate. The piezoelectric unit is connected to the inkjet unit, and one side of the piezoelectric unit corresponds to the nozzle. The ink control unit is electrically connected to the piezoelectric unit, and the ink control unit is a pull-push-pull so that the ink in the container is discharged from the inkjet unit and formed into a high resolution shape of nano-sized ink drops to be printed on a rigid substrate. The piezoelectric unit is selectively controlled for inkjet action of pull-push-pull.

Compared with the prior art, the inkjet device for the nano-friendly inkjet ink of the present invention has a wide color gamut, low ink bleeding, fast speed by ink having a combination of a plurality of nano-sized color pigments with specific color codes. Ink drops can be provided to achieve drying and high permeability. Nano-sized pigments include at least red pigments, yellow pigments, blue pigments, black pigments and green pigments. Moreover, when the ink is applied to a rigid substrate, it provides a low surface tension on the substrate so that the ink adheres flatly to the substrate. Therefore, the inkjet apparatus can generate nano-sized (smaller than 300 nm) ink droplets having high precision and high resolution (1440 dpi) by the piezoelectric unit and the ink control unit. Therefore, with the present design, it is possible to achieve high transparency, wider color gamut, faster drip-dry, lower ink bleeding, and higher resolution.

1 is a schematic diagram of an embodiment of an inkjet device for a nano environmentally friendly inkjet ink of the present invention;
2 is a schematic diagram of a color range of an embodiment of an inkjet device for a nano environmentally friendly inkjet ink of the present invention.

The techniques used by the present invention to achieve the above objects, features, and effects of the present invention are described by the following embodiments with reference to the accompanying drawings.

Referring to FIG. 1, this shows an embodiment of an inkjet device for the nano-friendly inkjet ink of the present invention. In this figure, the inkjet device 2 is fixed to a low viscosity inkjet printer 4 for printing a rigid substrate 6. The rigid substrate 6 is made of acrylic, plastic, glass, metal or ceramic tiles. In another embodiment, the substrate 6 is from the group consisting of polyvinyl butyral (PVB), polyvinyl chloride (PVC), polyethylene terephthalate (PET), acrylonitrile butadiene styrene (ABS) and polycarbonate (PC) Made of selected plastic material.

Moreover, the inkjet device 2 for the nano-friendly inkjet ink includes a kind of ink 8, an inkjet unit 10, a piezoelectric unit 12, and an ink control unit 14. Ink 8 has a higher transmittance and wider color range and is selected from the group consisting of red pigment (R), yellow pigment (Y), blue pigment (B), black pigment (K) and green pigment (G). It comprises a plurality of nano-sized ink particles 82 configured. In other embodiments, the color code of the red pigment R can be at least one of R-177, R-254 and R-242; The color code of the yellow pigment (Y) may be at least one of Y-120, Y-139 and Y-150; The color code of the blue pigment (B) may be B15: 6; The color code of the black pigment (K) may be BK-7; The color code of the green pigment (G) may be at least one of G-7, G-36 and G-58. By a combination of pigments of different color codes, the ink 8 can produce a wide range of colors as shown in FIG. 2 and produces a variety of colors. In Fig. 2, the conventional ink is shown by the CMYK (4 printing colors) color range, and the ink combination of the present invention is shown by the RYBK color range. It should be noted that each pigment has the basic physical characteristics listed in Table 1 below:

Pigment Surface tension Solidification Viscosity density CIE color tone (mN / m) (%) (cP) (g / mL) x y Y Red (R) 23.2 22.81 3.57 1.0287 0.4494 0.2654 27.913 Yellow (Y) 22.3 21.62 6.04 0.9825 0.4156 0.4905 92.12 Blue (B) 22.3 21.36 6.03 0.97 0.1723 0.2114 37.494 Black (K) 21.9 21.43 5.92 0.9794 0.3845 0.3768 7.853

The inkjet unit 10 has a nozzle 102 and a container 104. The container 104 comprises ink 8, and the nozzle 102 is preferably a kind of fine pinhole shaped nozzle for discharging ink 8 printed on the substrate 6. The piezoelectric unit 12 is connected to the inkjet unit 10, and one side of the piezoelectric unit 12 corresponds to the nozzle 102. The piezoelectric unit 12 uses a conductive quartz vibrator (not shown), which, when electricity is supplied to the quartz crystal vibrator, causes the ink 8 in the container 104 to be operated by the crystal vibrator and form ink drops. It generates a vibration of a fixed frequency corresponding to the current to cause it to be injected from the nozzle 102, which is similar to the power pressure generated by the piston in the engine of the car.

The ink control unit 14 is electrically connected to the piezoelectric unit 12, and the ink control unit 14 is an inkjet for forming ink droplets of high resolution nano sized ink droplets in the container 104. The piezoelectric unit 12 is selectively controlled to have a pull-push-pull inkjet action so as to be discharged from the inkjet unit 10 during operation. Nano sized ink drops are smaller than 300 nanometers (nm). In another embodiment, nano sized ink drops are between 50 nm and 100 nm. It should be noted that the inkjet action of the ink control unit 14 produces a certain size of ink droplets produced from the piezoelectric unit 12 and reduces the inertial effect. In other words, before the ink 8 is discharged, the ink 8 converges and discharges before being discharged by the nozzle 102, and the resulting ink drops have a better consistency (e.g., ink droplets). Their shape is round). The inkjet action also concentrates the force and increases the precision for injecting the ink 8.

Compared with the prior art, the inkjet device for the nano-friendly inkjet ink of the present invention has a wider color gamut, lower ink bleeding by ink having a combination of a plurality of nano-sized ink particles 82, Ink drops can be provided to achieve faster drying and higher permeability. Ink particles 82 include nano sized color pigments with the specific color codes mentioned above. Moreover, when the ink is applied on the rigid substrate 6, it provides a low surface tension attached on the substrate 6 such that the ink adheres flatly on the substrate 6. Therefore, the inkjet apparatus 2 emits inkjet ink formed by nano-sized (smaller than 300 nm) ink droplets having high precision and high resolution (1440 dpi) by the piezoelectric unit and the ink control unit. As a result, higher transmission, wider color gamut, faster drip-dry, lower ink bleeding, and higher resolution can be achieved. By the combination of nano-sized pigments having the physical characteristics shown in Table 1 above, the surface tension of the ink 8 with the combination of pigments can be 22-24 N / m.

Preferred embodiments of the present invention are disclosed in the examples. However, the examples should not be construed as limiting the actual applicable scope of the present invention, and as such, all changes and changes and appended claims that do not depart from the spirit of the present invention are intended to be covered by the protection scope and claims of the present invention. Will remain.

2: inkjet device 4: inkjet printer
6: solid substrate 8: inkjet ink
10: inkjet unit 12: piezoelectric unit
14: ink control unit 102: nozzle
104: Courage

Claims (10)

An inkjet device fixed to an inkjet printer to release nano-sized ink particles printed on a rigid substrate,
A kind of inkjet ink comprising nano-sized ink particles consisting of selected from the group consisting of red pigment (R), yellow pigment (Y), blue pigment (B), black pigment (K) and green pigment (G);
An inkjet unit having a container filled with the inkjet ink and a nozzle for ejecting the inkjet ink printed on the substrate;
A piezoelectric unit connected to the inkjet unit to drive the corresponding nozzle;
The piezoelectric unit is electrically controlled to perform a pull-push-pull inkjet action, and the inkjet ink is ejected from the nozzle in a high resolution shape of nano-sized ink droplets by the inkjet action and printed on the substrate. And an ink control unit for further controlling the inkjet device. The method of claim 1,
And the nozzle of the ink jet unit is a fine pinhole shaped nozzle. The method of claim 1,
And the color code of the red toner is at least one of R-177, R-254 and R-242. The method of claim 1,
And the color code of the yellow toner is at least one of Y-120, Y-139 and Y-150. The method of claim 1,
And the color code of the blue toner is B15: 6. The method of claim 1,
And the color code of the black toner is BK-7. The method of claim 1,
And the color code of the green toner is at least one of G-7, G-36, and G-58. The method of claim 1,
And the nozzle has an effective capacity for ejecting nanosized ink droplets printed on the substrate having a surface tension of 22-24 N / m. The method of claim 1,
And the nano-sized ink particles of the inkjet ink are smaller than 300 nm in size. The method of claim 1,
And the nano-sized ink particles of the inkjet ink are between 50 nm and 100 nm in size.

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