
Creating, navigating, and manipulating documents | 71
Pixels-per-inch (ppi) is equivalent to dots per inch (dpi).
Resolution and print quality
The resolution of output devices (printers) is measured in dots per inch, and in the case of halftones, lines
per inch (lpi). Output device resolutions vary, depending on the type of press and paper used. In general,
a photograph is output at a crisp 150 lpi if printed on glossy magazine stock, and at 85lpi if printed on
newspaper stock.
If you are using a personal laser or inkjet printer, set your document size in inches, centimeters, points,
or picas at the dots-per-inch setting specific to your printer. Most printers produce excellent output from
images set at 300 ppi. Increasing the file’s pixels-per-inch setting does not necessarily improve the output
and may create a large, unwieldy file.
If you are using a commercial printer or a more sophisticated output device, the dimensions of the image
should always be set to the actual size that you want the image to appear in the printed piece. A good
rule of thumb is to set the number of pixels-per-inch to twice the desired lines per inch. So, at 150lpi, the
setting should be twice that, or 300 ppi; at 85lpi, the setting should be 170 ppi. If you have questions
about the resolution of specific output devices, it’s a good idea to check with the print service provider.
Opening and placing files
You can open files that were created in Corel Painter or in other applications. For example, you can open a
file from another graphics application and use Corel Painter to add brushstrokes, tints, or paper textures.
You can also place a file in an existing Corel Painter document. The placed image becomes a new reference
layer in the document — you can transform (resize, rotate, or slant) it on-screen by dragging its handles. A
placed file maintains its link to the source file until you commit it to the standard layer format.
You can scale a file before placing it in a document.
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