Thanks everyone for the information. I don't see why a "bad" machine would produce a bad on-screen line that is then visible on a good machine. But I'll make some final checks on the uniformity of our printer driver and call it a day.
While frustrating, it does takes the heat off me for not being able to figure out what's going on. So thanks for the info! L. ________________________________ From: Fred Ridder [mailto:docu...@hotmail.com] Sent: Friday, November 30, 2007 8:51 AM To: Doug; Chen, Loretta Cc: framers at lists.frameusers.com Subject: RE: Table rules randomly dark in pdfs Doug wrote: > In my experience the true test is whether the rules print > normally...Acrobat has a reputation for not being able to draw lines > well. If the hardcopy is fine, just ignore the inconsistent ruling. Just to clarify: Acrobat's problems with line widths is on-screen only, and it all has to do with how Acrobat handles fractional pixel widths. If a line in a document happens to straddle the boundary between two pixels in the screen image, Acrobat may draw *both* pixels as black even though the proper line width is 1 pixel or less. If you increase the zoom factor so that most lines are more than 1 or 2 screen pixels in width to begin with, the difference of an extra pixel on some lines becomes a lot less noticeable. But regardless of the on-screen display anomaly, Acrobat always produces line widths in printed output that are accurate within the printer resolution (e.g. 1/600 inch). ________________________________ Share life as it happens with the new Windows Live. Share now! <http://www.windowslive.com/share.html?ocid=TXT_TAGLM_Wave2_sharelife_11 2007>