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  1. #11
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    TripleStampPress's Avatar


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    Are there particular gradient types that you prefer stochastic? Also, any suggestions for settings? We use Accurip, and the default for stochastic is 150 microns with gamma at 1. Is this a good starting point?

  2. #12
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    Andymac's Avatar

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    Don't understand the gradient question?

    Also, don't remember the micron size we used - if you can vary it, then just make some test shots and develop the film on to screen and print it - your first challenge is to find the minimum dot size you can hold and print.

    After that, then figure out your pixels per inch - I know we used 187, but again, you need to find what you can develop and print. What Richie was talking about happens when your PPI divides evenly into your mesh count. Say 150 ppi with a 300 mesh screen (or 305, it's virtually the same)

    The same concept as picking oddball screen angles with process halftones - things that divide evenly in screenprinting cause interference patterns.
    Andymac

    services www.squeegeeville.com
    equipment www.tmiscreenprinting.com

    Todo es empezar.

  3. #13
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    I guess by "gradient type" I meant, are there situations where you just flat out prefer the look of stochastic over traditional halftones?

    We do not have issues exposing or printing halftones, but we change dot shape depending on the image qualities. We use ellipse when trying to avoid dot gain jumps in mid-tones or to keep 90% from becoming 100%, but if those concerns are not relevant we usually go with a round dot. With ellipse it is much easier to see the individual dots, and it can be a little distracting.

    When does stochastic make the most sense?

  4. #14
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    If you don't want a mechanical/gridded look.

    I think when reproducing 'sketchy' hand drawn things that have tonal values, it would be better to use stochastic dots.

    Really, just another arrow in the quiver.
    Andymac

    services www.squeegeeville.com
    equipment www.tmiscreenprinting.com

    Todo es empezar.

  5. #15
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    That makes a lot of sense. We have a few things that were originally done in pencil, and the clients wanted to maintain that look. It has worked pretty well with traditional halftones, but the bolder lines that fall in the 85-100% range end up looking jagged - almost pixelated. I can imagine the more random pattern of stochastic would look way better in that type of art. Thanks!

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