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From: greid@adobe.com (Glenn Reid)
Newsgroups: comp.lang.postscript
Subject: Re: Images
Keywords: dpi
Message-ID: <376@adobe.UUCP>
Date: 31 Jan 89 20:51:46 GMT
References: <13619@dcatla.UUCP>
Sender: news@adobe.COM
Reply-To: greid@adobe.COM (Glenn Reid)
Organization: Adobe Systems Incorporated, Mountain View
Lines: 20

In article <13619@dcatla.UUCP> dudkl@dcatla.UUCP (Danny K. Llewallyn) writes:
>I have some image data that is 240 dpi 1 bit per pixel.  When I send it
>to my PostScript printer which is 300 dpi it does not come out as clear
>as it does on the printer that is 240 dpi.  This kindof makes sense since
>the 300 dpi printer has more resolution.  What I am wondering though, is
>there anything that I can do with any of the PostScript operators to make
>the image come out just as clear as it does on the 240 dpi printer?

Well, if you don't mind it's being smaller, you can certainly scale the
image so that it falls more neatly into multiples of 300 dpi (note that
you can do this without being device-dependent; it just happens to look
a little better at 300dpi resolutions).  Nothing fancy about it, but it
will look more crisp, I'm sure:

	%!
	240 300 div dup scale
	% your program here

Glenn Reid
Adobe Systems