KR100837371B1 - Light emitting apparatus and method for curing inks, coatings and adhesives - Google Patents

Abstract

UV curing devices and methods are provided to improve the distribution and application of UV light to UV photoinitiators in UV curable inks, coatings or adhesives. The UV curing apparatus and method includes a first row of UV LED assemblies with UV LED assemblies spaced at regular intervals from adjacent UV LED assemblies. The first column is followed by at least one second column of the plurality of UV LED assemblies, the assembly of the second row being placed adjacent to the space between adjacent UV LED assemblies in the first row, thereby staggering the assembly of the second row with those of the first row. . The staggered heat of the UV LED assembly is preferably mounted on the panel. UV curable products, articles and other articles, including UV photoinitiators in or on the web, are carried or moved past the UV LED assembly for effective UV curing. This arrangement facilitates uniform curing of UV curable inks, coatings and / or adhesives on a product, article, or other article. The apparatus may include a roller for moving the web, a mechanism for moving the panel in orbit or a corresponding path, and an injection tube for injecting non-oxygen gas into the UV light curing region.

UV curing devices, UV photoinitiators, UV light emitting diodes (UV LEDs), staggered

Description

LIGHT EMITTING APPARATUS AND METHOD FOR CURING INKS, COATINGS AND ADHESIVES}

The present invention includes inks, coatings or adhesives having a UV photoinitiator for avoiding "hot spots" and for converting monomers in the ink, coating or adhesive into a bonded polymer in which the monomer material solidifies upon exposure to UV light. A method and apparatus for utilizing ultraviolet (UV) light emitting diodes in staggered arrays and mechanisms for moving an array to provide uniform application of ultraviolet light to a moving object.

Until now, ultraviolet lamps have been used to cure ultraviolet inks, coatings and adhesives.

More recently, EXFO and EFOS, Mississauga, Ontario, Canada, have developed UV light emitting diodes (LEDs) and cured ultraviolet photosensitive monomers to polymerize monomers and use them to solidify inks, coatings or adhesives. Gathered.

Although the use of multiple UV-LEDs provides a great deal of efficiency in terms of cost and energy consumption, for low intensity UV-LEDs, and in "hot spots" than elsewhere in the ink, coating or adhesive to be cured There is still a problem of efficient curing in "hot spots" which provide more curing.

In addition, in the UV-LED prior art, LEDs are arranged to ensure uniformity for the application of backlight displays and other lighting. Standards for such uniformity are primarily designed to create an appearance, so the backlight is uniform in visual appearance.

Accordingly, it is desirable to provide an improved UV method and apparatus for more uniformly applying UV light emitted from UV LEDs and avoiding hot spots to more effectively cure UV inks, coatings and adhesives.

In one embodiment of the present invention,
A UV LED assembly comprising a UV light emitting diode (LED) chip coupled to a cathode pad and an anode, the UV LED assembly comprising a first row of UV LED assemblies and a second row of UV LED assemblies, each of the UV LED chips of the UV LED assembly of the first row being the A UV light emitting device comprising a panel mounted with a staggered set of rows of UV LED assemblies staggered away from each of the UV LED chips of the two rows of UV LED assemblies, wherein the panels comprise first, second, third and third panels. A UV light emitting device which is a panel having four sides;
Conveyors for moving UV curable inks, coatings or adhesives on a product, article, or other article; And
While UV light is emitted from the staggered heat of the UV LED assembly to uniformly apply, distribute or sweep UV light onto a UV photoinitiator, and to cure the UV curable ink, coating or adhesive on the product, article, or other article, A mechanism for moving the panel that is operatively connected to the light emitting device to operate the panel in an elliptical proximity to a photoinitiator;
Mechanism for moving the panel,
A first spring mounted adjacent to the first surface of the panel;
A first shaft;
A first cam mounted eccentrically on said first shaft adjacent to said third surface of said panel;
A first driver for rotating the eccentrically mounted first cam and rotating the first shaft to move the panel in a corresponding path relative to the first spring;
A second spring mounted adjacent the second side of the panel;
A second shaft;
A second cam mounted eccentrically on the second shaft adjacent the fourth surface of the panel;
A second driver for rotating the eccentrically mounted second cam and rotating the second shaft to simultaneously move the panel in a corresponding second path relative to the second spring; And
Wherein the UV LED assembly in the mechanism for moving the panel is located between 0.001 inch and 0.3 inch from the UV photoinitiator,
Provided is a UV curing apparatus for applying ultraviolet (UV) light to a UV photoinitiator in a UV curable ink, coating or adhesive on an article, article or other article.
The apparatus includes a plurality of panels mounted with a staggered set of rows of the UV LED assembly.
The apparatus includes a gas injector for injecting gas into the oxygen free region between the UV photoinitiator and the UV LED assembly in a mechanism for moving the panel to facilitate curing of the UV curable ink, coating or adhesive on the product, article or other article. It includes.
The device includes a thin, transparent sheet or layer of plastic material over the UV LED assembly on the panel to protect the UV LED assembly from splashes of the UV curable ink, adhesive or coating.
In addition, the present invention in one embodiment the present invention,
A conveyor having a conveyor belt for carrying the UV photoinitiator in the UV curable ink, coating or adhesive on the article, article or other article and including a web roller assembly for moving the web;
UV LED assembly comprising a UV light emitting diode (LED) chip connected to the cathode pad and anode, the UV LED chip of the UV LED assembly in a separate column is staggered away from the UV LED chip of the UV LED assembly in adjacent rows. A UV light emitting device comprising a panel mounted with a staggered set of rows of UV light emitting devices, the panel being disposed adjacent to a moving conveyor belt and being a panel having first, second, third and fourth sides; And
In order to uniformly cure the UV curable ink, coating or adhesive on the product, article, or other article, while the UV LED chip evenly emits UV light to the UV curable ink, coating or adhesive on the article, article, or other article , The conveyor belt moves the UV curable ink, coating or adhesive on the product, article, or other article, including staggered heat of the UV LED assembly in a path proximate to the UV curable ink, coating or adhesive on the product, article, or other article. To move a panel to say,
An eccentrically mounted first cam operating corresponding to the first side of the panel, a first spring operating corresponding to the third side opposite the first side of the panel, corresponding to the second side of the panel A moving mechanism comprising a eccentrically mounted second cam, a second spring operative corresponding to a fourth side opposite the second side of the panel,
The eccentrically mounted first and second cams are generally orbital, annular, as the web carrying the UV curable ink, coating or adhesive on a product, article or other article is moved past the panel. And a moving mechanism, including moving the panel correspondingly to both the X-axis path and the Y-axis path to move or vibrate in a circular or elliptical path.
As described in more detail below, the methods and apparatus of the present invention provide a technique and structure for more uniform application of UV light emitted from UV-LEDs, such that the light is used to cure the ink, coatings and adhesives. It is more effective and reduces the "hot spots" or eliminates them by applying UV light more evenly.

According to the invention there is provided staggered arrays of UV LED assemblies on a panel in which the UV assemblies are arranged in rows, each row being staggered from adjacent rows.

In addition to staggering of the UV LED assembly in adjacent heat, UV curable products, articles or other articles comprising UV inks, coatings or adhesives to be cured are moved over or within the web very close to the array.

Furthermore, the panel is moved or moved in the X and Y direction, like an orbital sander, so that light from each UV LED assembly is lightly swept over the orbit area, for example in a circular or oval pattern. Minimize the occurrence of "hot spots" and apply UV light uniformly to products, articles or other articles comprising UV inks, coatings or adhesives.

In a preferred embodiment, the web comprising the UV curable product, article or other article to be cured is arranged to move vertically. As it moves past the panel of the UV LED assembly, a gas having a molecular weight heavier than air may be injected into the upper end of the path of travel of the UV curable product, article or other article comprising UV ink, coating or adhesive. Furthermore, when it moves past a panel of an array of UV LED assemblies, a gas having a lighter molecular weight than air is injected into the lower end of the path of the UV curable product, article or other article comprising UV ink, coating or adhesive. Can be.

The method and apparatus of the present invention provide uniformity of light application from a flat panel comprising an array of UV-LEDs. This result is obtained when the product and / or lighting fixture is moved throughout in response to VU light from the UV-LED assembly. This movement in itself has the ability to provide a factor of uniformity. That is, the movement of the product or the movement of the light array addresses the problem of providing uniformity in the direction of product flow or lamp movement.

"X-axis" uniformity is handled by the movement of the product or the LED array.

"Y-axis" uniformity is handled by the way the LED chips are arranged. To achieve the cure rate associated with typical UV curing applications, a very large number of UV-LED chips are arranged to deliver an amount of UV energy sufficient to cure the polymer.

The first step in creating such an array is to create a series or parallel electrical circuit, either in series or in a straight line with LED chips spaced from each other at equal intervals (interval X). The second row starts the row at intervals 1/2 X and then each LED chip falls from the adjacent LED chip at interval X to the interval X.

The third column starts at an interval 1/2 X from the start of the second column. This offset continues for each row of LED chips in the array. This leads to two points. First, the light uniformity is increased due to the cross placement of the UV-LED chips. This creates an overlap of light emission. Next, having each row start at half the interval of the next one will create a stair case effect. This will allow for uniformity on the Y axis as the array grows in size.

There is another way to place the LED chip and achieve the same uniformity. This is to use three rows to get uniformity. It arranges the LED chips at interval X, the next column (column 2) starts at interval 1/3 X from the start of the first column and the next column (column 3) is at interval 2/3 X from the start of the first column or Start at interval 1/3 X from the start of column 2.

Another way is to provide four rows to achieve uniformity, in which the LED chips are spaced X apart from each other. The second row starts its first LED chip at an interval 1/4 X from the first LED chip of the first row. The third row starts its row at interval 1/2 X from the first LED chip of the first row or at interval 1/4 X from the beginning of the preceding column.

The method and apparatus of the present invention are also mounted in long parallel rows to provide a very large number of LEDs with a uniform distribution of light.

In addition, when a UV curable ink or adhesive splashes onto an array of LEDs, a thin transparent plastic sheet or layer is placed over the array to protect the array, which is periodically cleaned or replaced.

Further details of the invention are provided in the following detailed description and claims in connection with the accompanying drawings.

1 is a top design front view of a UV LED assembly comprising a cathode and anode pad equipped with a UV LED chip in accordance with the teachings of the present invention;

2 is a top design front view of a basic block or substrate design in which anodes and cathodes may be mounted on or above or in accordance with the teachings of the present invention;

3 is a front view of one array of UV LED assemblies in which the rows of UV LED assemblies are arranged in the array such that the intersecting rows of the UV LED assemblies in one row are staggered with the UV LED assemblies of adjacent columns in accordance with the teachings of the present invention;

4 is a front view of the six arrays of panels of the UV LED assembly shown in FIG. 3 in accordance with the teachings of the present invention, abutting one side edge of the panel to move, reciprocate, or move the panel in the X direction and at the opposite edge of the panel. Causing the movement of the panel in the Y direction and the first eccentric cam moving in contact with the spring so that when the first and second cams are rotated around their axes, all the arrays move in a path of orbit, circle, or ellipse. Schematically shows a second eccentric cam which operates in contact with a spring bearing the upper edge and the lower edge of the panel;

FIG. 5 shows that each product, article or other object has a UV photoinitiator therein as it passes through an array of UV LED assemblies while an oxygen-free, heavier than air gas is injected from a gas tube located near the top of the web's travel path. Consisting of a UV cured product, article or other article that is burned on a roller to travel in a generally vertical path past the panel of the array of UV LED assemblies shown in FIG. 4 so that the article, article or other article can be cured. A block schematic diagram of a web to build or carry it;

6 shows each article, article or article having an UV photoinitiator therein as each article, article or other article moves through the array of UV LED assemblies while oxygen-free gas is injected from a gas tube located near the bottom of the web's path of travel. Consist of, or carry, a UV cured product, article, or other article that rides on a roller to travel in a generally vertical path past a panel of the array of UV LED assemblies shown in FIG. 4 so that another article can be cured. Is a block schematic diagram of a web;

FIG. 7 is another schematic design of placing the UV LED assembly in at least three rows in which the spacing between the UV LED assemblies in each row is increased to establish a three stage stagger of the UV LED assembly.

Detailed description of preferred embodiments and best practices for carrying out the invention is described herein.

Referring now to the drawings in more detail, a conventional ultraviolet light emitting diode (UV LED) assembly comprising an anode 14 mounted with a chip 16 comprising a cathode pad 12 and a UV LED chip 16 ( 10 is shown in FIG. 1. Each cathode pad 12 (FIG. 1) is connected to a wire conductor as each anode 14 is.

Referring now to FIG. 2, a basic block having a first array 21 of UV LED assembly 10, ie, pad 12 and anode 14, that provides a plurality of UV LED chips 16 ( building block 20 is shown. The basic block 20 is designed to mate with similar basic blocks to form a group 22 of arrays 21, 23 and 25 as shown in FIGS. 3 and 4. In this way, several blocks 20 may be fastened to coincide with each other and arranged in a pattern on the panel 28 (FIG. 4) (eg, as a tile on the floor).

As shown in FIG. 3, the UV LED assemblies 10 in each array 21, 23 and 25 are spaced apart from the first lower row 36 of the UV LED assembly 10. Next, in the adjacent second row 38, the UV LED assemblies 10 are arranged in a staggered manner to be positioned above the space between the UV LED assemblies of the first row. In the same way, the next upper row 40 of the UV LED assembly 10 is staggered and the UV LED array 21 has a total of twenty staggered rows as shown in FIG. 3.

Also, as shown in FIG. 3, the beginning of the first UV LED assembly of the bottom row 36 in the first array 21 is the last UV LED assembly (at the end of the bottom row 42 in the second lower left array 23). 10) to align with the end.

Then, the start of the first UV LED assembly 10 of the top row 44 in the first array 21 coincides with the end of the last UV LED assembly of the top row 46 in the second lower left array 23. To be aligned. Next, the end of the last UV LED assembly of the bottom row 36 in the first array 21 is aligned with the beginning of the first UV LED assembly of the bottom row 48 in the third lower right array 25. Finally, the end of the last UV LED assembly of the top row 44 in the first array 21 is the first UV LED assembly 10 in the top row 49 in the third lower right array 25 as shown in FIG. 3. ) Is aligned to the beginning of the.

As optimally shown in FIG. 4, the UV light from each UV LED assembly 10 can be placed and staggered at intervals corresponding to adjacent rows in the array as well as placed and staggered at intervals corresponding to the columns of other arrays. The three arrays 21, 23 and 25 can be arranged in a staggered manner over the panel 28 so that they are arranged. Also, although not shown, more than three arrays 21, 23, and 25 may be provided, such as six arrays.

In addition, the mechanism shown in FIG. 4, preferably cams 50 and 64, moves, moves or reciprocates the panel 28 in the X direction, up and down in the Y direction, as in an orbital sander. Can be provided for. The first x-axis cam 50 is mounted eccentrically to rotate about the shaft 54 and has a spring 58, such as a helical tension spring, arranged to operate in contact with the other side edge 60 of the panel 28. It operates in contact with one side edge 56 of one panel 28. The center of the cam 50 is spaced apart from the center of the shaft 54 so that the cam 50 and the shaft 54 are not coaxial or coaxial.

Next, the second y-axis cam 64 (FIG. 4) is mounted eccentrically to rotate on the shaft 52, such as a spring, such as a helical tension spring, arranged to operate in contact with the lower edge 70 of the panel 28. 68 abuts the upper edge 66 of the panel 28 in opposition to the operation. The center of the cam 64 is spaced apart from the center of the shaft 52 so that the cam 64 and the shaft 52 are not coaxial or coaxial.

Rotation of each shaft 52 and 54 (FIG. 4) by a mover, such as a variety of speed motors (not shown), may cause the panel 28 to move by generally moving in orbit, annular, circular, or elliptical paths. . This means that each row of UV LEDs in each array 21, 23 and 25 mounted on panel 28 to emit the emitted UV light and uniformly apply the UV light to the product, article or other article to be UV cured. This results in orbital movement of the assembly 10. This divergence of UV light also minimizes or eliminates the occurrence of so-called "hot spots" of UV light.

As shown in FIG. 5, a schematic block diagram of a UV curing device, assembly, mechanism or mechanism constructed in accordance with the teachings of the present invention is shown. The panels 28 of the UV LED arrays 21, 23 and 25 are generally arranged vertically and very close to the movement of the conveyor belt comprising the web 74-the web 74 is a UV LED array ( The rollers 76, 78, and 80 are to be moved so that they are generally straight and vertical in close proximity to the panels of 21, 23 and 25. For this purpose, at least one of the rollers 76, 78 and / or 80 of the conveyor may be a drive roller.

UV curable products, articles or other articles, such as labels, disposed within or on the web 74 (FIG. 5) may have one or more UV curable inks, coatings and / or adhesives between the plastic cover layer and the label. The UV curable ink, coating and / or adhesive may comprise a UV photoinitiator that will polymerize monomers in the UV curable ink, coating or adhesive when subjected to UV light within a predetermined UV wavelength range.

The UV curable inks, coatings and / or adhesives are preferably disposed on the side of the web 74 (FIG. 5) facing the panel 28 closest. Preferably, the spacing between the UV LED assembly and the ink, coating or adhesive is between 0.001 inches and 0.3 inches, which accounts for the effect of the UV emitted light exponentially disappearing as the distance to the product, article or other UV curable article being processed increases. Improve.

Preferably, the shafts 52 and 54 may cause orbital movement of the panel 28 and the UV LED assembly as the web 74 comprising the article, article or other UV curable article moves past the panel 28. 4) is rotated. Such movement also minimizes "hot spots" and provides uniform sweeping, distribution and application of UV light from the UV LED assembly 10.

A block schematic of the assembly or appliance shown in FIG. 5 is provided to minimize exposure to oxygen to inhibit UV curing of a product, article or other object during curing. Near the upper end 86 of the downward travel path, indicated by the arrow 88 of the web 74, a gas tube 84 providing a gas injection at the top for injecting gas heavier than air, for example carbon dioxide. ) Is provided on the assembly and the instrument. Thus, the gas may be applied to the panel 28 and the web 74 to provide an oxygen free region between the UV LED assembly 10 on the panel 28 and the web 74 having the UV curable product, article or other article to be cured. It can flow downward in the space between.

The wiper blades 90 (FIG. 5) providing the lower papermaking unit store and compress the gas in the space between the orbiting UV LED arrays 21, 23 and 25 (FIG. 4) and the moving web 74 (FIG. 5). And may be disposed adjacent the lower edge 70 of the panel 28 to collect and / or cover. The wiper blade 90 is preferably fixed to the lower edge 70 of the panel 28 and has an outer edge 92 disposed to be attracted to the moving web 74. In this way, the injected gas can be restrained from exiting the curing zone.

6 is a block schematic diagram of a UV curing device, assembly, mechanism or apparatus constructed in accordance with the teachings of the present invention. The moving web 74 here rides around the rollers 94, 96 and 98, at least one of which may be a drive roller and, as in the UV curing apparatus, assembly and apparatus shown in FIG. A web 74 having a UV curable product, article or other article therein is passed through a panel 28 equipped with an array of UV LED assemblies 21, 23 and 25, FIG. 4, as indicated by arrow 100. Move it upwards.

In the device, assembly or instrument shown in FIG. 6, an oxygen free gas, eg helium, which is lighter than air, inert in the space between the orbiting panel 28 (FIG. 4) and the moving web 74 (FIG. 6). A gas tube 104 is provided near the lower end 106 of the movement path 100 of the web 74 to provide a lower gas injection to inject the gas. This provides an oxygen free region that enhances and facilitates curing of the UV photoinitiator in the UV curable product, article or other article carried by the web 74.

As with the UV curing device, assembly, and instrument shown in FIG. 5, injection into the curing zone between the orbiting panel 28 (FIG. 4) and the moving web 74 (FIG. 6) minimizes the outflow of gas lighter than air. A wiper blade 108 is arranged that provides an upper papermaking portion 108 near the upper edge 68 of the panel 28 as shown in FIG. 6 to store, compress, collect and / or cover the gas. In addition, the wiper blades 108 (FIG. 6) may be arranged to be secured to the upper edge 68 and attracted to the web 74.

In order to prevent the UV LED assembly from overheating, i.e. to control the heat generated by the UV LED assembly 10, the power supplied to the UV LED assembly may be activated and deactivated at a relatively high frequency, periodically or sequentially. Can be. That can be turned on and off. In addition, the duty cycle of the on-off cycle can be changed to adjust the UV light intensity.

FIG. 7 shows another way in which a UV LED assembly, i. E. LED chip 16, can be placed to achieve the same uniformity as shown in FIGS. 2 and 3. This is to use three rows to get uniformity. That is, the LED chips 16 are arranged at intervals of X in the first row 112, and the next row 114 and row 2 start at an interval 1/3 X from the start of the first row 112 and the next row ( 116, column 3 allows to start at an interval 2/3 X from the beginning of the first column 112 or at an interval 1/3 X from the start of the second column 114.

It can be understood that the spacing X matches the width of the UV LED assembly 10, such as 1, 2, 3, 4, 5 times wide, to provide the desired stagger of light rays from the UV LED assembly 10.

In addition, when the UV curable ink or adhesive is deposited on the UV LED assembly, a clear transparent sheet or layer of plastic material may be placed over the arrays 21, 23 and 25 to protect the UV LED assembly 10. The sheet or layer is then periodically cleaned or replaced.

From the foregoing description the methods and apparatus of the present invention have a number of advantages. Some of them have been described above and others are inherent in the present invention. For example, the panel 28 of the UV LED assembly 10 may be arranged very close to the web 74 carrying the UV curable product, article or other article, which is UV from the UV LED assembly 10. The light allows for better curing of the UV curable inks, coatings and / or adhesives.

Furthermore, the web 74 carrying the UV curable product, article or other object passes through the staggered heat of the UV LED assembly in the UV LED assembly 10 of the staggered arrays 21, 23 and 25 on the panel 280. Ensures uniform application of UV light to all inks, coatings and / or adhesives to be cured in a UV curable product, article or article.

Furthermore, the reciprocating or orbital movement of the UV LED assembly adjacent to the moving web, including the UV curable product, article or other article to be cured, ensures uniform sweeping of the UV light onto or within the UV curable product, article or other article. do.

Finally, heavier or air than air in the space between the reciprocating or orbiting panel 28 of the UV LED assembly and the web 74 carrying the UV curable product, article or other article having the monomer material to be cured or polymerized. Applying a lighter, oxygen free gas improves the emission and application of more uniform UV light onto UV curable products, articles or other articles.

While embodiments of the invention have been shown and described, those skilled in the art will appreciate that various modifications and variations, as well as its components, parts, installations, devices, manufacturing (methods) steps and uses, are within the spirit of the invention. It will be appreciated that alternatives are possible. Accordingly, the scope of the invention is limited only by the accompanying claims.

Claims (8)

A UV LED assembly comprising a UV light emitting diode (LED) chip coupled to a cathode pad and an anode, the UV LED assembly comprising a first row of UV LED assemblies and a second row of UV LED assemblies, each of the UV LED chips of the UV LED assembly of the first row being the first A UV light emitting device comprising a panel mounted with a staggered set of rows of UV LED assemblies staggered away from each of the UV LED chips of the two rows of UV LED assemblies, wherein the panels comprise first, second, third and third panels. A UV light emitting device which is a panel having four sides; Conveyors for moving UV curable inks, coatings or adhesives on a product, article, or other article; And While UV light is emitted from the staggered heat of the UV LED assembly to uniformly apply, distribute or sweep UV light onto a UV photoinitiator, and to cure the UV curable ink, coating or adhesive on the product, article, or other article, A mechanism for moving the panel that is operatively connected to the light emitting device to operate the panel in an elliptical proximity to a photoinitiator; Mechanism for moving the panel, A first spring mounted adjacent to the first surface of the panel; A first shaft; A first cam mounted eccentrically on said first shaft adjacent to said third surface of said panel; A first driver for rotating the eccentrically mounted first cam and rotating the first shaft to move the panel in a corresponding path relative to the first spring; A second spring mounted adjacent the second side of the panel; A second shaft; A second cam mounted eccentrically on the second shaft adjacent the fourth surface of the panel; A second driver for rotating the eccentrically mounted second cam and rotating the second shaft to simultaneously move the panel in a corresponding second path relative to the second spring; And Wherein the UV LED assembly in the mechanism for moving the panel is located between 0.001 inch and 0.3 inch from the UV photoinitiator, A UV curing device for applying ultraviolet (UV) light to a UV photoinitiator in a UV curable ink, coating or adhesive on an article, article or other article. The device of claim 1, wherein the device is And a plurality of panels mounted with a staggered set of rows of said UV LED assemblies. The device of claim 1, wherein the device is A gas injector for injecting gas into the oxygen-free region between the UV photoinitiator and the UV LED assembly in a mechanism for moving the panel to promote curing of the UV curable ink, coating or adhesive on the article, article or other article, UV curing device. The device of claim 3 wherein the device is A UV curing device comprising a thin, transparent sheet or layer of plastic material over a UV LED assembly on a panel to protect the UV LED assembly from splashes of the UV curable ink, adhesive, or coating. A conveyor having a conveyor belt for carrying the UV photoinitiator in the UV curable ink, coating or adhesive on the article, article or other article and including a web roller assembly for moving the web; UV LED assembly comprising a UV light emitting diode (LED) chip connected to the cathode pad and anode, the UV LED chip of the UV LED assembly in a separate column is staggered away from the UV LED chip of the UV LED assembly in adjacent rows. A UV light emitting device comprising a panel mounted with a staggered set of rows of UV light emitting devices, the panel being disposed adjacent to a moving conveyor belt and being a panel having first, second, third and fourth sides; And In order to uniformly cure the UV curable ink, coating or adhesive on the product, article, or other article, while the UV LED chip evenly emits UV light to the UV curable ink, coating or adhesive on the article, article, or other article , The conveyor belt moves the UV curable ink, coating or adhesive on the product, article, or other article, including staggered heat of the UV LED assembly in a path proximate to the UV curable ink, coating or adhesive on the product, article, or other article. To move a panel to say, An eccentrically mounted first cam operating corresponding to the first side of the panel, a first spring operating corresponding to the third side opposite the first side of the panel, corresponding to the second side of the panel A moving mechanism comprising a eccentrically mounted second cam, a second spring operative corresponding to a fourth side opposite the second side of the panel, The eccentrically mounted first and second cams are generally orbital, annular, as the web carrying the UV curable ink, coating or adhesive on a product, article or other article is moved past the panel. A moving mechanism, comprising moving the panel correspondingly to both an X-axis path and a Y-axis path to move or vibrate in a circular or elliptical path; UV curing device comprising a. delete delete delete

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