Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!gatech!udel!rochester!uhura.cc.rochester.edu!merlin.cvs.rochester.edu!tonyg From: tonyg@merlin.cvs.rochester.edu (Tony Giaccone) Newsgroups: comp.sys.mac.programmer Subject: Printing BitMaps Summary: 8 bit vs. 1 bit images Message-ID: <2700@ur-cc.UUCP> Date: 10 Aug 89 18:32:06 GMT Sender: news@uhura.cc.rochester.edu Reply-To: tonyg@cvs.rochester.edu (Tony Giaccone) Distribution: usa Organization: Univ. Roch. Center for Visual Sci. Lines: 18 I'm trying to print a bit map to a laserwriter over appletalk, and I'm having a rather strange problem. When I print the image directly to the printer, I get a pattern that looks like an 8 bit images is being interpreted as a one bit deep image. However, with the same code if I enable background printing the bitmap prints correctly. I'm opening a standard mac window (with newwindow), and in fact I open two windows and copybits the bitmap in the first window to the second, to insure that I have a valid bit map. Can anyone explain why the use of background printing should make any difference??? Tony Giaccone tonyg@cvs.rochester.edu