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Why do color documents produce greyscale PDF files on Windows NTx?

April 26, 2017color documents files greyscale PDF Windows

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Why do color documents produce greyscale PDF files on Windows NTx?

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This is due to an interaction between the Windows NT PostScript printer driver and certain applications. An application can poll the printer driver to see if it is for a color device or not. Some applications do this, and generate monochrome PostScript output, so if you are really printing to a monochrome printer this will produce a smaller PostScript file which prints more quickly. However, if your default printer is monochrome, and in Print Setup… you subsequently switch to a color printer, this setting is not updated, and the application will still believe that it is printing to a monochrome device. This will then result in monochrome PDF files being produced by Jaws PDF Creator, because it is being given monochrome PostScript input. To fix this, click on Properties… in the Print Setup… dialogue to bring up the document properties dialog. On the Page Setup tab, click on Color under Color Appearance, this will ensure that the application knows it is printing to a color device.