If you own a Canon laser printer you might run into the following problem. With certain settings enabled, the Canon printer will print text in PDF files or Web Pages with black backgrounds. Not the entire page or text will be black, but simply each word will have its own seperate background. When in print settings, you have a choice to print with HP-GL or Raster mode. This phenomenon only happens when using HP-GL. Switch to Raster mode and your problem will be solved.