Back

If your email is not recognized and you believe it should be, please contact us.

  • You must be logged in to reply to this topic.Login

Adjusting a grayscale print PDF for dot gain

Return to Member Forum

  • Author
    Posts
    • March 2, 2017 at 2:49 am #92557
      James Morris
      Member

      I’ve done a 32-page grayscale photo section for the middle of a book. The printer has just come back and said the print PDF needs to be adjusted for 25% dot gain. I’ve tried the following:

      • Exported a normal ‘press quality’ PDF, but changed Color Conversion to ‘convert to destination’ and then selected Dot Gain 25%
      • Applied a 25% dot gain profile to my grayscale images in Photoshop, then exported a press quality PDF specifying ‘no color conversion’ and ‘include all profiles’

      …but when I examine the resulting PDFs in Acrobat, parts of photos that were 100% black in my original PDF have remained as 100% black in the two test PDFs, when I was expecting them to be 75%.

      Can anyone help please?

    • March 2, 2017 at 1:48 pm #92576
      Andre Vandal
      Member

      Dot gain is a way to compensate for the bleed of the ink on paper (or other medium) so a dot will increase in size because the ink will soak in the paper and so you can try and control that with dot gain. But it doe nothing to the color itself, black is always black. The gain would only affect the edges of your mass of black, not the inside. So you should only see a difference in the gray portions of an image, not the black or white.

  • Author
    Posts
Viewing 1 reply thread
  • The forum ‘General InDesign Topics (CLOSED)’ is closed to new topics and replies.
Forum Ads