Monochrome Printing

Controlling the Print Darkness of a PDF

When you can't control darkness on your 4110 (the Fuji engine won't let you control that from DocuSP the way a 6100 series printer will), or if you want to lighten or darken your PDF without changing the settings on you DocuSP DFE,  try this:

  1. Open the PDF in Acrobat Professional (If you're a digital print shop, Acrobat Pro is as essential for you as socket wrenches are for your garage mechanic!).

  2. On the menu bar, click on Advanced to open a drop-down menu.

  3. Mouse-over Print Production to open another drop-down menu.

  4. Click on Convert Colors to open a Convert Colors window.

  5. If there are color elements in your document, it is a convention that they be given a dithering pattern to make them look different from gray or from other colors when rendered on a grayscale printer. These patterns can be avoided by going to the top field in the Convert Colors window and by selecting Device Gray: Convert.

  6. In order to control the lightness or darkness of the printed document, use the settings in the Destination Space area of this window.

  7. This is where you control the lightness or darkness of your document: Dot Gain 30% will yield a lighter image than Dot Gain 15% will.

    If you're interested in the physics behind this, you choose the dot gain percentage based upon how you anticipate the printer and paper would interact under normal printing. If you anticipate a 30% dot growth at the printer, you compensate by metering out less ink or toner. If you anticipate only 15% dot growth at the printer, you meter out more ink per dot.

Created by Norman A. Teck
June 2, 2008