Screen printing is based on a screen with some holes blocked and other left open to allow ink to pass through at chosen locations to create a desired pattern. The screen is placed over a textile to be decorated with a small gap, called “off-contact,” usually 1/16 to ¼ inch. Ink is then pushed through the screen at the desired locations with pressure applied by a squeegee pulled or pushed over the screen with a downward force, resulting in the screen contacting the textile and depositing ink. Additional colors may be applied using a separate screen for each color. The result is a printed image on the textile. Digital, or direct-to-garment printing, utilizes a computer, software, and an ink-jet printer to print the image directly onto the textile. Both of these techniques enable printing on a smooth surface, such as a shirt.
When a squeegee or flood bar presses on a screen and moves over the edge of a platen, the screen can wear or become damaged at that transition, or cause issues with print quality near that transition.
Manufacturers and/or printers often want (or are required by law) to include a label with their printed product. In the past, these labels were printed separately and attached to the textile (e.g., by sewing below the inner collar of a shirt). More recently, these labels have been printed (e.g., screen printed) directly on the textile to reduce costs associated with applying a separate label and increase comfort for the wearer. A textile printing apparatus and method is disclosed which enables printing labels directly on the textile, in co-owned U.S. Pat. No. 9,302,462 for “Textile Printing Apparatus and Method” issued Apr. 5, 2016, hereby incorporated by reference for all that is disclosed.
An example of the textile printing apparatus disclosed in U.S. Pat. No. 9,302,462 includes a first printing surface configured to support a first portion of a textile to be printed on. The example textile printing apparatus also includes a second printing surface configured to support a second portion of the textile in substantially a same printing plane as the first portion of the textile. The example textile printing apparatus also includes a slot formed adjacent the second printing surface. For a printing operation, a body of the textile is mounted over the first printing surface, and an inner portion of the textile is pulled through the slot and mounted over the second printing surface. The printing operation proceeds in substantially the same printing plane onto both the outer printing surface and the inner printing surface without removing the textile during the printing operation.
A screen printing adapter device is disclosed herein that supports the flood bar and/or squeegee on the mesh screen where there is no platen beneath the screen, or where there are gaps in the platen, such as the platen disclosed in U.S. Pat. No. 9,302,462. In an example, the screen printing adapter device disclosed herein may be rigid (e.g., made of aluminum or other solid surface) and placed beneath the screen and/or may be attached to the screen of the screen printing device.
In an example, the screen printing adapter device disclosed herein may move with the screen (e.g., not with the platen) to raise and lower during a screen printing operation. The screen printing adapter device may also be spaced away from the screen to match the off-contact between the screen and platen. The example screen printing device disclosed herein supports areas of the screen that are unsupported by the platen holding the garment or other article. As such, the example screen printing adapter device disclosed herein may increase the longevity of the screen and quality of the print.
It is noted that as used herein, the terms “includes” and “including” mean, but is not limited to, “includes” or “including” and “includes at least” or “including at least.” The term “based on” means “based on” and “based at least in part on.” Although the term “shirt” and “shirtboard” or “shirt board” are used herein, the platen is not limited to use with shirts and may be implemented with other articles to be printed on. In addition, the platen is not limited to use with heat pressing, and may also be implemented for other applications.
The example screen printing adapter device 10 and 10′ may be implemented as an accessory for a screen printing device 1 (see, e.g.,
An example screen printing adapter device 10 may include a body 12 configured as an accessory to a printing board 2 having a tag printing surface 3. A shoulder edge 14 of the body 12 is shaped to fit adjacent and conform to a shoulder edge 4 of the printing board or platen 2. The body 12 may also have a collar edge 16. The collar edge 16 of the body 12 is shaped to fit adjacent the tag printing surface 3 of the printing board 2, e.g., as shown in
Another example screen printing adapter device 10′ may include a body 12′ configured as an accessory to a printing board 2 having a tag printing surface 3. A shoulder edge 14′ of the body 12′ is shaped to fit adjacent and conform to a shoulder edge 4 of the printing board or platen 2. The body 12′ may also have a collar edge 16′. The collar edge 16′ of the body 12′ is shaped to fit fully around a perimeter of the tag printing surface 3 of the printing board 2, e.g., as shown in
It is noted that the screen printing adapter device is referred to herein primarily with reference to the example 10 shown in
In an example, the body 12 is non-porous so that ink does not penetrate the body 12. The body 12 may be any suitable dimension. In an example, the body 12 may also have a thickness that is less than a thickness of the shirt board 2. In another example, the body 12 has a thickness that is about the same as a thickness of the shirt board 2.
In an example, the screen printing adapter device 10 is attached to a screen 5 (see, e.g.,
In an example, the body 12 of the example screen printing adapter device 10 is attached to a screen 5. As such, the example screen printing adapter device 10 moves on and off (e.g., can be raised and/or lowered) the printing board 2 by moving or raising and lowering the screen 5 of the screen printing device 1, e.g., during a screen printing operation. For example, the screen printing adapter device 10 is raised with the screen 5 so that a shirt can be threaded onto the platen 2. Then the example screen printing adapter device 10 is lowered with the screen 5 so that the shirt can be screen printed on the platen 2. The example screen printing adapter device 10 is then raised with the screen following the screen printing operation, to permit the shirt to be removed from the platen 2.
In an example, the body 12 of the example screen printing adapter device 10 is configured to support areas of the screen for a squeegee that are otherwise unsupported by the printing board 2. For example, those areas may include the area adjacent the shoulder of the printing board 2. By providing support, the body 12 is configured to increase longevity of the screen 5 through multiple screen printing operations. By providing support, the body 12 is also configured to increase quality of a print on a shirt on the shirt board 2 during a screen printing operation.
Before continuing, it should be noted that the examples described above are provided for purposes of illustration, and are not intended to be limiting. Other devices and/or device configurations may be utilized to carry out the operations described herein.
In an example, the example screen printing adapter device 10′ (or device 10) supports areas of the screen that are otherwise unsupported by the printing board 2. As such, the example screen printing adapter device 10′ (or device 10) may increase longevity of the screen 5, relative to a screen printing device without the adapter. The example screen printing adapter device 10′ (or device 10) may also increase quality of the print, relative to a screen printing device without the adapter.
The operations shown and described herein are provided to illustrate example implementations. It is noted that the operations are not limited to the ordering shown. Still other operations may also be implemented.
It is noted that the examples shown and described are provided for purposes of illustration and are not intended to be limiting. Still other examples are also contemplated.
This application claims the priority benefit of U.S. Provisional Patent Application No. 62/394,425 filed Sep. 14, 2016 titled “Screen Printing Device” of Darren Livingston, hereby incorporated by reference for all that it discloses as though fully set forth herein.
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Number | Date | Country | |
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20180072042 A1 | Mar 2018 | US |
Number | Date | Country | |
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62394425 | Sep 2016 | US |