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256 Gray Scale TIFF File Viewing And Printing |
The information in this document applies to:
WordPerfect® 5.1 for DOS
Problem
Symptoms: The customer has a TIFF graphic file that was scanned with a Logitech Scanman Plus hand scanner and the Logitech Ansel 256 Gray Scale Scanning Software. When he looks at the graphic in the View Document screen or in the graphics edit screen, the resolution is very poor. It also prints out on his dot-matrix printer and his PostScript printer with a lower quality than he expects, even with graphics quality set to high. How can he improve the display and printing quality? Solutions: The customer had a 16-color graphics driver selected. Because there are only 16 colors available to display the 256-gray scale file, the displayed image will be very poor. If the customer selects a 256-color graphics driver the image will look correct. The only way to increase the print quality on a dot-matrix printer is to set graphics quality to high. PostScript printers use a "Dot Screen" to determine how to dither gray scale files when printing. Most printers use a 50-60 dot screen. In other words, they use a group of between 5 and 6 actual printed dots and pattern them to make the gray values, giving an impression of 50-60 dpi. This can be changed on most PostScript printers. The customer will need to consult his printer manual to find out how to change it for his printer. Refer to memo 10787T for additional information regarding printing bitmapped graphics. |
Answer:
Details:
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