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- Newsgroups: comp.sys.acorn.tech
- Path: sparky!uunet!gumby!yale!cs.yale.edu!news-mail-gateway!daemon
- From: /G=Owen/S=Smith/O=SJ-Research/ADMD=INTERSPAN/C=GB/@mhs-relay.ac.uk
- Subject: Re: High res Colour Printing in RISCOS 3.1
- Message-ID: <ARM200-921216140142-1D7DF49*@MHS>
- Sender: /G=Owen/S=Smith/O=SJ-Research/ADMD=INTERSPAN/C=GB/@mhs-relay.ac.uk
- Organization: Yale CS Mail/News Gateway
- Date: Wed, 16 Dec 1992 14:01:42 GMT
- Lines: 35
-
- ajdh@bnr.co.uk (Andrew J D Hurley) wrote:
-
- >In article <1992Dec11.182310.2@condor> blacka@logica.co.uk writes:
- >>However, I discovered that the 3.1 driver does not support
- >>colour in resolutions above 180x180. I appreciate that high
- >>resolution colour printing is not for those in a hurry, but
- >>on occasions one is prepared to wait.
-
- >I am fairly sure I have managed 360x180 on my Swift24 since RO3.1
- >but I could be wrong. If the printer uses interlace to get the 360x360
- >(which the average 24 pin DM will do) then it is definately not a good
- >idea to try colour at this resolution. The yellow part of the ribbon (and
- >the others to a lesser extent) get extremely mucky in no time at all when
- >you play around with interlace. Your ribbon will be all but useless after
- >a page of full colour (eg. a scanned sprite) and they are not cheap
- >to replace that often.
-
- I'm glad to see someone agrees with me about interlaced colour ruining the
- ribbon. Andrew has also pointed out something I forgot to mention, which is
- that some of the newer 24 pin dot matrix printers can do 360 by 180 DPI
- without interlacing. I didn't write any printer definition files which did
- this since I didn't have any printers that could do it (I'm not sure that
- there were any around at the time either). The point is that if 360 by 180
- is non-interlaced then it's OK to use colour with it, although you may still
- find that 180 by 180 will look better on some pictures. Turning a 360 by 180
- interlaced definition into a non-interlaced one with !PrintEdit is
- simplicity itself - just change the "X interlace:" field from 1 to 0. Make
- sure your printer can actually print adjacent dots at 360 horizontal before
- doing this. If it can't your printout will still look basically OK, but it
- will be missing roughly every other horizontal pixel since the printer just
- throws the unprintable dots away and you'll effectively get a 180 by 180
- printout with some of the fine detail missing. Printers are quirky beasts at
- the best of times.
-
- Owen.
-