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Thread: ISO 12647 limits LPI and dot gain for each LPI

  1. #1
    Donor Mogly is on a distinguished road
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    ISO 12647 limits LPI and dot gain for each LPI

    in ISO are a lineature limit to 80 cm but if i want work with 100 or 120 lines per cm, who is tonal value increase for this lineatures in papers 1-1??
    Today I had a discussion with a vendor and says that the dot gain is the same for 70 lines per cm than for 100, and the iso before I know that's a lie. So I want to know what the dot gain and 100 line screens of 80 lines per centimeter with positive plates and papers of the type 1-2

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    Junior Member Heinrich is on a distinguished road
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    DotGain

    Hallo,
    u must print any of tools for DotGain Measuring on 100lpi (Like p2p25x).
    Use ISO Density for each paper type. (Matt - 1,50C, 1,45M, 1,25Y, 1,75K. Glossy - 1,55C, 1,5M, 1,45Y, 1,85K)
    After printing, measure it, calculate results with any calibration tool (like Curve 2).
    Write the results to RIP (Printing Press option).

    Greetings!

  3. #3
    Banned alengatdula is on a distinguished road
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    Just follow the same procedure. You know your target that is printing according to ISO 12647. Print to whatever LPI you wants and then satisfied, whatever method your are following, requirement of ISO 12647. If you are in with TVI target, the vendor is correct. Target TVI for paper type 1 for instance, curve A and B, positive plate. You may also consider other TVI target when you increase your LPI. Increasing LPI, increase TVI in printing.

    Hope this helps.

  4. #4
    Banned alengatdula is on a distinguished road
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    with regards with density,

    find your optimal density. do a test print and again satisfy ISO 12647 requirement.

  5. #5
    Donor Mogly is on a distinguished road
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    thankss

    We are considering the acquisition of Presssign and soon I will tell profits to 250 lpi

    Thanks to all

  6. #6
    Banned alengatdula is on a distinguished road
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    Quote Originally Posted by Mogly View Post
    We are considering the acquisition of Presssign and soon I will tell profits to 250 lpi

    Thanks to all
    Presssign is good.

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