aki@akix.uucp (Aki Atoji) (03/29/91)
I am using Ghostscript 2.1.1 on a 386/ix and Sun with X11 and/or
Sunview and noticed that halftones come out as patterns rather than
halftone or color.
When I configured it for HP Laserjet and printed, the darker
halftone was basically black, while lighter halftone came out as
patterns.
Also, on my X11R4 with 256 colors, it seems to just make this dithered
pattern for various colors instead of using the full 256 colors.
I looked through the *.doc files, but there doesn't really seem to be
any mention of this anywhere.
Is there a way to have ghostscript produce better halftone? Or is
this something being worked on?
While the speed of GhostScript compares favorably against NeWSprint,
the output quality is not quite right with these halftones.
Also, I wanted to write a driver for GhostScript which would work with
the internals of the network printer that my work sells. GhostScript
would send graphics primitive data over the network which would then
go directly to the GSP in the printer, resulting in very high
rasterization speed, and incrased print speed overall.
I'd post the code once it's done, except the printers have not been
sold to too many Unix users. I'd be interested in exchanging
information with people who are working on GhostScript drivers with
graphics coprocessors (and this is probably not the write group for
it, but I didn't know where to post instead).
Aki
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Aki Atoji {ncr-sd,ucsd}!serene!akix!aki
{nosc,ucsd,hplabs!hp-sdd}!crash!telesys!akix!aki
(only if above fail) aki@akix.uucp