cmyk screen printing in photoshop

If you want to silkscreen a full color accurate representation of a photo image it will require four separate colour separations (four different screens) in halftone patterns to get a great looking screen print. This guide will help you produce a four colour CMYK halftone separation of your image. It’s not that difficult once you know what to do and the results are outstanding!
Step 1: Open your image in photoshop and make certain the color mode is set to CMYK and the image size matches the output of your printer. Generally that is 300 DPI.
Step 2: Go to filters<pixelate<halftone pattern and chose the max pixel radius you need. I often choose 12 but 8 gives a finer detail (you’ll need a higher mesh count than 110 to reproduce this well).


Step 3: Open the Channels window and switch off all but one channel. You’ll notice that when you do this your image appears black and white. This is good. This is the page you’ll want to print onto your acetate or paper for your film positive. If you zoom into your image and you notice there are still some grey areas then you will have to adjust the levels a bit to get rid of that. You only want to print an image that is black and white. When you print make sure you print with crop marks so you can use those to register the layers on your screens.
  

Step 4: Repeat step 3 by turning on each subsequent layer and turning off the others, fixing the levels and priting that page. You’ll do this for each of the four channels.
Step 5: Once you’re finished you will have the four film positives that you will print one on top of the other to create your photorealistic screen print.
When it comes time to print you will want to print the page that was the ‘magenta’ channel in magenta, the ‘cyan’ page in cyan etc. That will give you the right colour combinations to make your photo print. I encourage you to experiment though, you can get amazing and inspiring results by changing the hues, saturation or flipping the colour values of the four screens. Once you know how to do it right you can do it wrong and make it your own.
Happy Printing!



wasnt here when it was explained