I have had this same problem with other PDF files. I think it is a bug in some versions of the Adobe Acrobat Reader. I found I solved the problem if I printed the file with Ghostscript, instead of Adobe Acrobat. Ghostscript, btw, is a GNU public license program that allows the use of Postscript on non-Postscript printers. PDF is evidently a format related to Postscript. Louis On Fri, 7 Jun 2002 13:27:04 -0400, Richard A. Cini, Jr. wrote: #Hello, all: # # Does anyone have a PDF copy of the Motorola 6800 chip datasheet? I #downloaded a copy from somewhere yesterday and the strangest thing happens. #When viewing the PDF, it shows on the screen as a positive image but when #printing, it prints as a negative. # # Thanks.