Screen printing is a printing technique where a mesh is used to transfer ink onto a substrate, except in areas made impermeable to the ink by a blocking stencil. A blade or squeegee is moved across the screen to fill the open mesh apertures with ink, and a reverse stroke then causes the screen to touch the substrate momentarily along a line of contact. This causes the ink to be pulled out of the mesh apertures as the screen springs back after the blade has passed. One color is printed at a time, so several screens can be used to produce a multicolored image or design.
The stencil forms open areas of mesh that transfer ink or other printable materials which can be pressed through the mesh as a sharp-edged image onto a substrate. A fill blade or squeegee is moved across the screen stencil, forcing or pumping ink into the mesh openings for transfer by capillary action during the squeegee stroke. Basically, the fill blade or squeegee fills the mesh openings with ink and also wipes the excess ink from the mesh opening. The next print stroke then partially wipes the ink from the mesh openings. This leaves a very thin layer of ink on the substrate.
It is also possible to use stencils which do not completely cover the mesh, but instead use a design which leaves open areas in the stencil which allow the ink to come through in those areas.
Three Main Types of Screen Printing
There are three main types of screen printing: spot color, process color, and four-color process.
Spot color printing is the simplest form of screen printing for more info visit our popular punch site, using one color of ink. The artwork for spot color printing is created using one color, which is then printed using that color of ink.
Process color printing is a more complex form of screen printing, using multiple colors of ink to create the final image. The artwork for process color printing is created using multiple colors, which are then printed using those colors of ink.
Four-color process printing is the most complex form of screen printing, using multiple colors of ink to create the final image. The artwork for four-color process printing is created using four colors, which
The Basics of Screen Printing
Screen printing is a printing technique whereby a mesh is used to transfer ink onto a substrate, usually paper, cloth, or metal. The ink is forced into the mesh openings by the fill blade or squeegee and by wetting the substrate, the ink is drawn out of the mesh as a result of capillary action.
The earliest forms of screen printing were practiced in China during the Song Dynasty (960-1279 AD). In the 13th century, the Japanese developed a method of printing patterns on cloth using a woodblock. This technique, known as stencil duplicating, became widely used in Europe by the mid-18th century.
Screen printing emerged as a commercial printing process in England in the early 1900s and in the United States shortly thereafter. The first recorded use of the process in the U.S. was in 1907, when a patent was issued for a method of printing patterns on cloth using a stencil and a porous fabric screen.
The Printing of Decals & Labels
Screen printing is commonly used for printing designs on t-shirts, posters, and other items of clothing. It is also used in the production of some types of printed circuit boards and in the printing of decals and labels.
There are two main types of screen printing: flatbed and rotary. In flatbed screen printing, the screen is placed on a flat surface and the ink is applied to the screen by means of a squeegee. In rotary screen printing, the screen is mounted on a cylinder and the ink is applied to the screen by means of a rotating blade.
The screen printing process consists of four basic steps:
1. Preparation of the screen
2. Preparation of the ink
3. Printing
4. Cleaning of the screen
Preparation of the screen involves the use of a photosensitive emulsion to create a stencil of the desired design. Once the stencil is complete, it is placed on the screen and exposed to light. This hardens the emulsion, leaving a negative image of the design on the screen.
The screen is then placed on the printing press and the ink is applied to the screen. The ink passes through the openings in the
Printing Technique
Screen printing is a printing technique whereby a mesh is used to transfer ink onto a substrate, except in areas made impermeable to the ink by a blocking stencil. A blade or squeegee is moved across the screen to fill the open mesh apertures with ink, and a reverse stroke then causes the screen to touch the substrate momentarily along a line of contact. This causes the ink to wet the substrate and be pulled out of the mesh apertures as the screen springs back after the blade has passed. One color is printed at a time, so several screens can be used to produce a multicolored image or design.
Preparing for Screen Printing
As a printing method, screen printing has been around for centuries, but it wasn’t until the early 1900s that it became the main method for printing t-shirts. The process is simple in theory: a stencil is created, ink is pushed through the stencil onto the shirt, and the ink is cured so it doesn’t wash away. In reality, there’s a bit more to it than that. If you’re thinking about starting a t-shirt business or just want to print some shirts for your band, here’s what you need to know about screen printing.
First, you need to create a stencil, also known as a screen. You can do this yourself by creating a design on transparency film and then burning it onto a screen made of mesh stretched over a frame. Or, you can have a professional screen printer create a screen for you. Once you have your screen, it’s time to set up your printing area.
You’ll need a few supplies, including screens, inks, squeegees, and emulsion. Screens come in different mesh counts, which refer to the number of threads per inch. The higher the mesh count, the finer the detail you can print. Inks also come in different types, depending on the fabric you’re printing on. You’ll need to experiment to see what type of ink works best on your fabric.
Light-Sensitive Liquid
Squeegees are used to push the ink through the screen onto the fabric. They come in different sizes and hardness, so you’ll need to experiment to see what works best for you. Emulsion is a light-sensitive liquid that’s used to coat the screen. It helps the stencil adhere to the screen so that the ink doesn’t bleed through.
Once you have all your supplies, you’re ready to start printing. First, you’ll need to coat your screen with emulsion and let it dry. Then, you’ll place your transparency onto the screen and expose it to light. This will burn the image into the screen. Once the image is burned into the screen, you’ll need to rinse it out with water so that the stencil is clear.
Screen Printing Your Design
Assuming you have your design all set and are ready to print it onto a shirt, here are the five basic steps of the screen printing process:
Set up your screen printing frame: This involves stretching a piece of mesh over the frame and securing it tight. Your design will be printed onto this mesh.
Create a stencil of your design: This can be done by hand with a Sharpie or with a more sophisticated method like Photoshop and a film positive.
Prep your screen for printing: This involves coating the mesh with a light-sensitive emulsion and letting it dry in the dark.
Expose your screen: This is done by placing your stencil on the screen and then shining a bright light on it. The light will harden the emulsion in the areas where the stencil was blocking it, creating a negative of your design.
Wash out your screen: This is done by simply running water over the screen to remove the unhardened emulsion. Your stencil should now be transferred onto the mesh.
Now you’re ready to start printing! Just place your shirt on the printing surface, make sure it’s secured tight, and start pulling the ink-filled squeegee across the screen. The ink will only pass through the areas of the mesh that are not blocked by the stencil, creating your design on the shirt.
Curing and Finishing Your Screen Print
After your screen print is complete, it needs to be cured. Curing is the process of setting the ink so that it is permanent. Without curing, the ink will not be as durable and may even wash off. There are a few different ways to cure your screen print, and the method you use will depend on the type of ink you are using.
One common method is to expose the print to UV light. This can be done with a UV lamp or by hanging the print in direct sunlight. The UV light will cause the ink to harden and become permanent.
Another method is to heat the print. This can be done with an iron or by putting the print in a clothes dryer. The heat will cause the ink to bond to the fabric and become permanent.
Once your print is cured, you can finish it off with a few final touches. If you want, you can add a clear coat of varnish or sealer. This will help to protect the print and make it last even longer. You can also add embellishments like rhinestones or beads. These can be added before or after curing.
Finally, you can cut and sew the print into a finished garment. If you are using a screen printing service, they will usually do this for you. But if you are doing it yourself, you will need to cut and sew the print yourself.
Curing and finishing your screen print is a simple process that will help to ensure that your print lasts for a long time. Be sure to follow the instructions for your specific ink and fabric to get the best results.
Final Words:
Screen printing is a printing technique whereby a mesh is used to transfer ink onto a substrate, except in areas made impermeable to the ink by a blocking stencil. A blade or squeegee is moved across the screen to fill the open mesh apertures with ink, and a reverse stroke then causes the screen to touch the substrate momentarily along a line of contact. This causes the ink to be pulled out of the mesh apertures as the screen springs back after the blade has passed. One color is printed at a time, so several screens can be used to produce a multicoloured image or design.
The stencil blocks the areas of the screen where you don’t want the ink to appear. The stencil is attached to the screen. The screen is placed on top of the substrate. The ink is placed on top of the screen. A squeegee is used to spread the ink evenly across the screen. The ink passes through the openings in the screen and is deposited on the substrate.