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Message

Eagle (Mac) print quality

2009-09-04 by Piers Goodhew

Hi List,

I've just posted a couple of photos ( http://groups.yahoo.com/group/Homebrew_PCBs/photos/album/1611066276/pic/list 
  ) showing something I've noticed Eagle do on both the venerable 5MP  
at home and the (wax-based) Xerox at my current work (both  
postscript). Now that I'm a solder paste/SMD zealot, it is more of an  
issue than before.

(Oh, and there may also be a superfluous third image which I uploaded  
when I ran out of patience and decided maybe the whole thing wasn't  
working. If it's there, ignore it)

There's this whole sort-of diagonal smear thing happening, most  
obviously around any through-holes - if you look at the "ex eagle" pic  
(you will have to go to "large" or "original" size to see it, or click  
this http://3.ly/UfB if you're lazy) you can see a white crescent at  
the bottom left of every hole, and several of the pads have pretty  
much bridged to nearby traces/pours (especially between the 0603 LEDs).

Are others seeing this? (either on Mac/postscript or any other  
combination)?

If I print to PDF, open the PDF in Illustrator, convert the strokes  
(it's all lines seemingly "gerber style") to outlines and print, I get  
the result shown in the "ex illustrator" image - much nicer! What I  
didn't think of, but will try tonight, is just printing a PDF ex-Eagle  
via some other app - it may be that eagle just can't print well under  
Mac OS - but how in the hell you can get a digital printer to smear  
like that is something I'd like to know!

PG

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