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Printing colour pictures

Printing colour pictures in a TEX document needs a driver program that is able to exploit the capabilities of a colour device. The driver must separate the colours of the picture into the basic colours used by the colour model supported by the output device. This was the purpose to develop the dvi djc-drivers for the Hewlett Packard inkjet printers and to upgrade BMZFONT to version 3.0. The solution described in this article proposes a device independent approach to printing coloured TEX-documents, not only on expensive Postscript devices but also on cheap colour printers.