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DP-Tek LaserPort Graphics Board--Shading Capa
DocumentID: 647702
Revision Date: 29-Feb-96 8:19:23 PM

The information in this document applies to:
WordPerfect® 5.1 for DOS

Problem

Symptoms: I am interested in knowing what kind of image fill is supported by the DP-Tek LaserPort driver since it says in "Printer Helps and Hints" that image half-toning is not supported. I feel that this is the main feature of this add-in board. I all ready know about the graphic resolutions that are supported. I need to know how many gray scale patterns are supported, is it the same as for the HP LaserJet Series II? Since it is not using half-toning, what is the method of shading? Solutions: Although the DP-Tek/Visual Edge board is supported in WP 5.1, the gray- scaling features of the this board are not supported. ALL gray scale patterns are rasterized within WP with a fixed 8 X 8 halftone cell matrix. As the fill pattern gets darker, more halftone cell pixels are turned on. We are working on supporting the gray scale capability since the board does such a fine job of it. Also, this add-on enhancement board increases print speed of graphics by a factor of about 4 times and has higher resolutions. These are the main features of the board, not the image half-toning. The number of shades printed out on the printer will be determined by the number of tones supported by the graphic program that is creating the graphic, as well as what shades are used in its creation. WP does not use the printer driver at all in determining what shading codes are needed to be sent down to the printer. It is instead up to the graphic program and the printer to determine what will be done with the graphic.

Answer:

Details:


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