PostScript output Half Toned not dithered

I am having a strange problem here, I was doing a printout from Ovation to
the excellent Samsung CLP550 when I noticed that our demo photo (jpeg) was a
lot darker than normal, I could also see from the grey scalling demo that it
was being half toned and not dithered.

I can't see anywhere to select dithering in the PostScript driver or Ovation!

Moving to different versions of RISC OS and/or !Printers sometimes is
correcting things but I can't see a repeatable pattern.

Any ideas?

Chris Evans

--
CJE Micro's / 4D 'RISC OS Specialists'
Telephone: 01903 523222 Fax: 01903 523679
chris@xxxxxxxxxxxxxxx http://www.cjemicros.co.uk/
78 Brighton Road, Worthing, West Sussex, BN11 2EN
The most beautiful thing anyone can wear, is a smile!

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Relevant Pages

  • Re: PostScript output Half Toned not dithered
    ... >> I am having a strange problem here, I was doing a printout from Ovation to ... > Postscript generally uses half toning, its bitmap based printers that support ... > error diffused dithering. ...
    (comp.sys.acorn.apps)
  • Re: PostScript output Half Toned not dithered
    ... > the excellent Samsung CLP550 when I noticed that our demo photo was ... its bitmap based printers that support ... error diffused dithering. ... will support dithering? ...
    (comp.sys.acorn.apps)
  • Re: PostScript output Half Toned not dithered
    ... > the excellent Samsung CLP550 when I noticed that our demo photo was a ... > I can't see anywhere to select dithering in the PostScript driver or Ovation! ... The PostScript driver does not offer such a choice. ...
    (comp.sys.acorn.apps)