Descreen

The Descreen feature lets you remove moiré patterns from printed materials. Moirés occur when you scan a screened original (mostly reflective or previously printed material, such as pictures from a newspaper or magazine). These patterns appear to the naked eye like a series or grid of dots or as shown in the example below.

Before	After

To set the screen for your needs, follow the steps below:

1. Click the Descreen options menu.

2. When the Descreen options menu comes up, select the screen for your needs, or choose Custom to set your own Descreen options.

3. When the Descreen dialog box comes up, enter a value that best corresponds to the dot quality of the original in which the moiré is to be removed. You may use a screen finder to measure the print screen lpi. Please contact your local print shop for more information on how to obtain a screen finder.

• Set a value from 50 to 85 if the original image has a coarse dot pattern, as in images taken from a newspaper.

• Set a value from 100 to 133 if the original image has a fine dot pattern, as in images taken from a magazine.

• Set a value from 200 to 250 if the original image has a very fine dot pattern with a near-photographic quality, as in images taken from a high-quality art magazine.

Multiple descreen settings are not allowed in frames and then perform a scan. For example, if you have different descreen settings on several frames and then perform a scan, follow the on-screen instructions to use the proposed descreen setting.