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I've found that a set angle of 22.5 for all screens works great. Correct me if I'm wrong, but I was always under the impression that different angles for CMYK was an outdated concept?
I've found that a set angle of 22.5 for all screens works great. Correct me if I'm wrong, but I was always under the impression that different angles for CMYK was an outdated concept?
I was always under the guise of the same angles being for simulated process. I've seen better results with CMYK at different angles.
If you are getting good results with all the same angles, then I wouldn't mess with anything. Typically the reason for different angles is to get rid of moire.
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Different angles allow you to achieve a wider variation of colors and subtleties in your image. The same angle dulls colors because they stack up. There is a reason for the rosette pattern, it allows the colors to work in a pattern which layers the edges of dots in a way to mix secondary and tertiary colors.
Conventional offset angles are adjusted in screen printing to help with the reduction of moire patterns.
Hello, my name is Ash, new to photoshop CS4, agree with you on screen angles, wandering if you can assist me with talk through on changing my angles in photoshop for 4 col work, I am at present using 77T Mesh and have been using default angles and are having trouble with Moire. Can the 77T Mesh be used or is it better to go to 100T Mesh or higher for the halftonees?
Any help in this matter will be greatly appreciated.
Different angles allow you to achieve a wider variation of colors and subtleties in your image. The same angle dulls colors because they stack up. There is a reason for the rosette pattern, it allows the colors to work in a pattern which layers the edges of dots in a way to mix secondary and tertiary colors.
Conventional offset angles are adjusted in screen printing to help with the reduction of moire patterns.
Interesting. I have always used the same angles 27.5
and I have noticed that when I do full color on dark garments with an underbase the prints always come out looking duller. On my next cmyk job I will do the different angles to see if that fixes the problem.
I agree with above poster. Different angles gives you a wider range of color. Most Applications like Photoshop have preset angles and frequency by Adobe or someone else. Huge difference with offset they use the traditional 15,75,0,45 to avoid. In screen printing the idea is to make sure you miss as many of the knuckle's or cross over threads as possible. So elliptical dots and varying angles. Not traditional ones that would potentially hit every knuckle. We print with food color inks and use 255 mesh for 4cp. and they print beautifully. All my Photoshop and Illustrator files are set up then placed into InDesign templates for output and I set my angels/frequencies there then rip.
Angles for 4 color process 
