kemp@umn-cs.CS.UMN.EDU (Stuart R. Kemp) (07/27/89)
I have a problem with Corel Draw when trying to get hard-copy output. The actual color output is not a 'true' color; instead it is dithered from 16 basic colors. This is true even when output to a QMS colorscript printer. The output will eventually be printed on a Linotronic; I want the 'true' color to be printed (or even a grey-scale). Anyone know how to fix this? Please respond via email -Stuart Kemp umn-cs.cs.umn.edu
weekley@oldcolo.UUCP (Bob Weekley) (07/30/89)
You state that you want 'true' color output from Corel Draw. The dithering
you see may be either a function in the printer itself or in the print
driver of Corel Draw. Run a test on a Lintronic and see what it does.
Arrange to examine other output examples on the printers you are using and
see if the ditering artifacts still persist. This will give you some clues.
Also it may help if you brushed up on color theory, so you know how color is
generated in the first place. An excellant book with lots of graphs is:
"THE SCIENCE OF COLOR TECHNOLOGY" try your local library.
The medium you are looking at makes a difference in the perceived quality of
work. 4 dots per mm (100 dpi) seems fairly very good on a video screen, but
the same resolution on a sheet of paper looks fairly coarse. A bitmap screen
dump shows this effectively.
Robert R. Weekley at THE OLD COLORADO CITY ELECTRONIC COTTAGE
2502 W. Colorado Ave., C.S. Colorado 80904
(719) 632-3391 [8-N-1] (719) 632-4848 (voice)Roger.Hausmann@f270.n106.z1.fidonet.org (Roger Hausmann) (08/04/89)
Bob, if you're happy with what Corel puts on the screen for you, here's a bit of advice (from a graphics guy... take it with a grain of salt): You could possibly capture that hi-res screen image with SCR2GIF, a shareware product. We have developed a process called HiRes-2-Slides which will generate a brilliant, true color hires 35mm slide- we can also then make color photographic prints or overheads...Roger Hausmann, Kingdom Productions (713) 526-2331 or BBS: (713) 630-0553