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Thread: Best angle in Ctp plates

  1. #1
    Member alliswell is on a distinguished road
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    Best angle in Ctp plates

    Hai freinds,

    I am using c-15,M-75,y-0,k- 45 angle for my ctp plate?Results are good to my knowledge?Is there any other better screen angle for ctp plate?

    alliswell

  2. #2
    Donor zuz43 is on a distinguished road
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    Quote Originally Posted by alliswell View Post
    Hai freinds,

    I am using c-15,M-75,y-0,k- 45 angle for my ctp plate?Results are good to my knowledge?Is there any other better screen angle for ctp plate?

    alliswell
    Yes. 210lpi 2540dpi - FujiCoRes screen - super effect with CelebraNT rip

  3. #3
    shampa
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    For general use with a non-directional dot those screen angles are optimal. For directional dots (e.g. eliptical or line) use 15, 75, 0, 135. If you are seeing single channel moire then shift the angles by +7.5 or switch screening algorithms.

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  5. #4
    Junior Member rooftop is on a distinguished road
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    You can swap Black angle with Magenta angle, so you have a bit more details.

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  7. #5
    Banned prepmaster is on a distinguished road
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    What do you mean when you say you can have better detail? How is this detail achieved?

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  9. #6
    Banned dtp4u is on a distinguished road
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    This is good question. I thought angles are to prevent moire and moire depend on which combination of color you have. Like green can have patterning and lavenders can have patterning, but to fix them both require different set of angles

  10. #7
    Junior Member china_czg is on a distinguished road
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    I use C15 M75 Y90 K45.is good.

  11. #8
    Junior Member DPCKA is on a distinguished road
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    angle

    C-20 m-85 y-5 k-50

  12. #9
    Junior Member rooftop is on a distinguished road
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    From my point of view, the common and most moire come from Cyan and Magenta, if those angle miss then the moire come out. While Yellow we use 0 or 90, which is a neutral angle, while mostly black use 45, this angle can be not so dominant angle compare to angle of Cyan and Magenta.

    If black angle and magenta swapped then the black color will have more dominant and there for you got "a bit more detail", and the magenta become less dominant.

    This is what my perception and what I have been experiencing so far.

    rgds

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  14. #10
    Donor zuz43 is on a distinguished road
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    C=15
    m=45
    y=0
    k=75

  15. Your ad here

  16. #11
    Junior Member preimpressao is on a distinguished road
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    Angles

    C15 M75 Y0 K45. This is best angle.

  17. #12
    Moderator super silja will become famous soon enough super silja's Avatar
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    Red face there is no simple answer

    periodic screening discovered almost 200 years ago is still used i GA industries. with small modification vendors try to impress potential customers with new invention.
    in the beginning of digital screening there is a problem but everything is solved as much as possible long time ago.
    carefully read following article
    http://www.heidelberg.com/corp/www/binaries/bin/files/dotcom/en/prinect/expert_guide_screening_tech.pdf
    this article is written by professionals.
    Also you have survey by GATF on http://www.luescher.com/CMS/cms/upload/downloads/fr/CTP/CtPNews/The_Myth_of_Square_Laser_Spots.pdf
    (made by professionals)
    you will find valuable information and you will find solution which best fit your needs.
    you doing fine with your choice c-15,M-75,y-0,k- 45

    personally i like non periodic screening. Adobe=Spekta or Harlequin=Staccato
    +-+-+-+-+-+ +-+-+ +-+-+ +-+-+-+-+ +-+-+-+-+
    |p|o|w|e|r| |t|o| |b|e| |y|o|u|r| |b|e|s|t|
    +-+-+-+-+-+ +-+-+ +-+-+ +-+-+-+-+ +-+-+-+-+

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  19. #13
    Junior Member china_czg is on a distinguished road
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    Sometimes I would swap ï¼£ and ï¼

  20. #14
    PRC Member congproprint will become famous soon enough congproprint's Avatar
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    personally i like non periodic screening.-> ok

    but Adobe=Spekta or Harlequin=Staccato -> i remember that Staccato from kodak scitex and Spekta from Screen.

  21. #15
    Moderator super silja will become famous soon enough super silja's Avatar
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    Lightbulb

    Quote Originally Posted by congproprint View Post
    personally i like non periodic screening.-> ok

    but Adobe=Spekta or Harlequin=Staccato -> i remember that Staccato from kodak scitex and Spekta from Screen.
    there is nothing wrong with my post.
    if you compare adobe non periodic screening technology and spekta you will find that it look same.
    also if you compare harlequin fm screening with staccato you will find that looks same.
    the thing speaks for itself
    maybe i am wrong but i am think that staccato is licensed from Scriptworks in Allegro/HQ days
    after that with fanfare they introduced/invent "New Staccato technology"
    Kodak sell licensed Harlequin FM screening as something super/mega/giga/ultra.
    +-+-+-+-+-+ +-+-+ +-+-+ +-+-+-+-+ +-+-+-+-+
    |p|o|w|e|r| |t|o| |b|e| |y|o|u|r| |b|e|s|t|
    +-+-+-+-+-+ +-+-+ +-+-+ +-+-+-+-+ +-+-+-+-+

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