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Table Of Contents
23.7 Images
Dynamic Image Location
What to check
Location of any external dynamic images the document references.
23.7.1 Scanline Orientation
What does scanline orientation refer to and why is it important?
Scanline orientation refers to the way in which the laser in a laser printer writes the page image onto the
printer drum. In PlanetPress Design you can use this information to minimize the amount of runtime
processing bitmapped image resources require, and thereby contribute to minimizing the overall execution
time of a document.
You determine the scanline orientation for an image resource from three pieces of information: the paper
orientation selected in the document for the page containing the image resource, how the paper enters the
printer, and the scanline orientation of the printer. Once you have these three pieces of information, you then
visualize the page of your document moving through the printer and determine whether the printer scans the
images onto the page from top to bottom or side to side.
As examples of correct scanline orientation settings, consider a document that uses an 8.5x11 inch sheet of
paper. In the diagram, the vertical double-headed arrow represents the scanline of the printer, and the paper
is moving through the printer from left to right.
A. Images scanned from top to bottom on a page in portrait orientation B. Images scanned from side to side in portrait
orientation C. Images scanned from top to bottom in landscape orientation D. Images scanned from side to side in
landscape orientation
In cases A and C, you set the scanline orientation of each of the bitmapped image resources on the page to
Top to bottom. In cases B and D, you set the scanline orientation to Side to side.
If you use the same bitmapped image resource in both a rotated and unrotated presentation, you should add
the image file as two distinct image resources, and set the scanline orientation for each image resource
separately.
You set the default scanline orientation for all bitmapped image resources in the document, in the Document
dialog box. You can set the scanline orientation for an individual bitmapped image resource by selecting that
image resource in the Structure area, and then using the Object Inspector to edit the Scanline orientation
property.
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