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Thread: What screen you use? AM, FM, mixed, concentric...

  1. #91
    Junior Member borgwarrior is on a distinguished road
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    We use FM with 2400 dpi.

  2. #92
    Junior Member Joeric is on a distinguished road
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    IN CHINA, most factories use 200Lpi AM, 2540dpi, Dot Shape:Euclidean.
    Rare ones will try to take FM.

  3. #93
    Junior Member alias7118 is on a distinguished road
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    Offset Printing :

    Normal commercial printing - 175lpi - 250lpi

    Packaging prinitng - 150lpi - 200lpi

    Quality printing and easy to print - Hybrid screening, eg. Kodak - Maxtone MX, Screen - Spekta, Agfa Sublima etc.

    Special product or quality control - FM Screening

  4. #94
    Junior Member sword772 is on a distinguished road
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    what angle ?

    OK - we used 200lpi at 2540 dpi - kodak maxtone 30y - round

    But what angel you people used ?

  5. #95
    Member Mark83 is on a distinguished road
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    The best screening for me is the hibrid tecnology!
    beacuse the traditional is the classic point, the new FM is only for very good machine and not all users like there point, he is see from more users like a laser printing.
    my personal opinion is that the classic is the better, but the yellow with FM screen give very luminosity at sheet printed, always printed with good machine.

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  7. #96
    Banned chenzhi is on a distinguished road
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    General print with AM screening, some fine products will be FM, there is more than one spot color will also use the FM to prevent moire

  8. #97
    Junior Member zznl is on a distinguished road
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    Wink

    General mainly on AM , especially good quality printing factory packaging printing some FM and mixed

  9. #98
    Member NightLord is on a distinguished road
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    and for screen printing what is the best screening?
    AM, FM,....?
    I use always AM but if there is a solution to eliminate moire please tell me.

  10. #99
    Banned yarnik is on a distinguished road
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    With our inside AM

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  12. #100
    Junior Member alias7118 is on a distinguished road
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    Quote Originally Posted by NightLord View Post
    and for screen printing what is the best screening?
    AM, FM,....?
    I use always AM but if there is a solution to eliminate moire please tell me.
    You can change the angle for CMYK, or use hybrid screening.

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  14. #101
    Junior Member fjcy888 is on a distinguished road
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    Prinect mix 250lin

  15. #102
    Member NightLord is on a distinguished road
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    Quote Originally Posted by alias7118 View Post
    You can change the angle for CMYK, or use hybrid screening.
    What rip for hybrid screening?

  16. #103
    Junior Member gzunigas is on a distinguished road
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    Really depends on the machine used

    If you are using a CTP of violet technology, it is not recommended to use FM, only a variety of hybrid screening, it uses FM screening in highlights and shadows, and AM screening in halft.

    This solves the problem of stability in the reproduction of higher LPI, as 175lpi or 200 lpi.

    if using thermal CTP technology. values ​​depend on the type of laser used thermal, most uses laser diode array, and others use GLV, but only , KODAK, use GLV SQUARESPOT.

    all thermal CtP, except SQUARESPOT, generates a Gaussian point screen, more or less than each other, but of significant importance.

    that is why, that companies have trouble of recording raster point, use a variety of formations special raster point, to try to solve with software, the defects of recording technology.

    only the laser thermal CTP SQUARESPOT propiety of Kodak, is capable of doing FM and print your result is as theory suggests it should be.

    more even. if used FM with SQUARESPOT. also requires naturally a calibration adjustment of the gain of the press point. and after that, the plaque and prints are more stable than those of AM and may even extend the range of offset color reproduction and reduce ink consumption. making impressions less sensitive to variation in ink density media, giving total control of printing and prepress truck doing less sencible to do the mauinista of the press.

  17. #104
    zgs
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    Junior Member zgs is on a distinguished road
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    FM raster gives better results on pictures with lots of small details but needs to be really precise calibrated, otherwise it would give "dirty" and "smudged" result.

  18. #105
    Junior Member eureka is on a distinguished road
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    FM screening 10 microns

    We are currently using FM 10 microns. It is a big struggle when our exercise for FM screening started. The results of FM were compared with AM 250 LPI. The results initially too bad to drop the FM screening in total.

    But when we analysed the problem, we found it is more an issue in color profile we use. We created Device link profiles for our press using heidelberg color tool box and we compensated dot gain accordingly.

    You don't believe the results we attained. Our printing is currently admired for the quality and customers are ready to pay more for our quality job.

    We advise use FM 10 microns (may be second generation) with right prepress profile and corresponding dot gain curve. You will see a big leap in your quality of printing.

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