Klaus

The printer driver in your case may treat a bitmap, which it may believe to be a photograph, differently from other objects and colour correct appropriately.
Xara X may print any vector object ( or part of ) as a bitmap, rather than as a vector graphic, where a conversion of the vector object to bitmap is necessary to implement such effects as transparency, bevels, shadows etc, and in boundary areas where the same colour is rendered as part of a vector object and as part of a bitmap and the printer driver treats these colours differently you will obviously get strange boundary effects.

The use of this colour correction is usually a user option in the printer settings. Some printers achieve this correction by using different ink cartridges, others may just correct the colour values.

So there are at least two ways to fix the problem, print as bitmap or switch off photo mode in the printer.

Luciano's problems with eps files are likely due to some vector objects being defined as CMYK and then rendered as an RGB bitmap (Xara renders all bitmaps to the printer as RGB bitmaps). In many printers the colour conversion will mean the RGB and CMYK areas look different, in addition as per the inkjet printers some colour postscript printers have photo colour correction control ( which affects all bitmaps) and again this can cause identical colours to appear differently in different contexts.

Mark