Adobe INDESIGN 2.0 - USING HELP Help Manual page 384

Adobe InDesign Help
Using Help | Contents |
Printing
About printing
Whether you are providing a multicolored document to an outside service provider, or just
sending a quick draft of a document to an inkjet or laser printer, knowing a few basics
about printing will make the print job go more smoothly, and help to ensure that the
finished document appears as intended.
Types of printing When you print a file, InDesign sends it to a printing device, either to
be printed directly on paper or to a digital printing press, or to be converted to a positive
or negative image on film. In the latter case, the film can then be used to create a master
plate for printing by a commercial press.
Types of images The simplest types of images, such as text, use only one color in one
level of gray. A more complex image is one with color tones that vary within the image.
This type of image is known as a continuous-tone image. A scanned photograph is an
example of a continuous-tone image.
Halftoning To create the illusion of continuous tone, images are broken down into a
series of dots. This process is called halftoning. Varying the sizes and densities of the dots
in a halftone screen creates the optical illusion of variations of gray or continuous color in
the printed image.
Color separation Artwork that will be commercially reproduced and that contains more
than a single color must be printed on separate master plates, one for each color. This
process is called color separation.
Getting detail The detail in a printed image results from a combination of resolution and
screen frequency. The higher an output device's resolution, the finer (higher) the screen
frequency you can use. (See
Transparent objects If the artwork contains objects with transparency features that you
added using the Transparency palette or the Drop Shadow or Feather commands, the
transparent artwork will be flattened according to settings in the flattener style you
choose. You can affect the ratio of rasterized images to vector images in the printed
artwork. (See "Creating, saving, and loading custom flattener styles" on page
Using Help | Contents |
Index
"Specifying the halftone screen frequency" on page
Index
Printing
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