sdh@joevax.UUCP (The Doctor) (08/12/86)
The laser writer is supposed to give you what-you-see-is-what you get for MacPaint, right? I don't think so. It seems that on a LaserWriter+, when printing a Macpaint document, it looks for certain patterns to reproduce in fine detail. For example, let the character X, represent a pixel on the LaserWriter. And Let Macintosh pixels be equal to 4 X's (a 2x2 block). If you have this pattern in Macpaint: XX XX XX XX XX XX XX XX you should get the same thing from the laser writer. Instead it generates: X X X X X X X X X X X X X X X X Theoretically, these are equivalent, ie, the same pixel density. The trouble arises when you don't have large areas of patterns that can easily be recognized by the LaserWriter Driver. What results is that pictures do not come out looking like they do on the screen, in fact the pattern aliasing makes digitized pictures look out and out wrong, since the way pixels are arranged in blocks severely effects the way levels of gray are preceived. Is there any way to get around this quirk? Is there a program that will reproduce Macpaint pictures on a LaserWriter+ doing a true pixel for pixel mapping instead of pattern matching? Steve Hawley joevax!sdh
brian@ut-sally.UUCP (Brian H. Powell) (08/13/86)
In article <234@joevax.UUCP>, sdh@joevax.UUCP (The Doctor) writes: > If you have this pattern in Macpaint: > > XX XX > XX XX > XX XX > XX XX > > you should get the same thing from the laser writer. Instead it generates: > > X X X X > X X X X > X X X X > X X X X You didn't say, so I feel obligated to ask. Did you use smoothing (using "Print Final" vs. "Print Draft")? That could easily cause this problem. The smoothing algorithm is usually pretty good, but these things happen. Brian H. Powell UUCP: {ihnp4,seismo,ctvax}!ut-sally!brian ARPA: brian@sally.UTEXAS.EDU