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Ensuring your resolution/line screen produces 256 grays


    In printing your file, you may find that the resolution of your printer, when combined with the chosen line screen, allows fewer than 256 levels of gray. A higher screen frequency decreases the levels of gray available to the printer. (For example, if you are printing at a resolution of 2400 dpi, using a line screen higher than 150 results in fewer than 256 levels of gray.)

    The following table lists the maximum line screens you can use with printers to maintain all 256 levels of gray:

    Final Imagesetter Resolution

    Maximum Line Screen to Use

    300

    19

    400

    25

    600

    38

    900

    56

    1000

    63

    1270

    79

    1446

    90

    1524

    95

    1693

    106

    2000

    125

    2400

    150

    2540

    159

    3000

    188

    3252

    203

    3600

    225

    4000

    250