Raster data for Pure black text printing

[Michael Sweet]

shermin wrote:
> Hi,
> 
>   We are developing a device driver for smart card printer.In our printer,when we tried to print Text or barcode,should be printed with pure black K not with the combination of YMC.
> Also when we tried to print an image with text on the top of the image should print like :image with combination of YMC and the text with Pure black.
> 
> 1)Is there any method to identify the Text in raster data so that part should be printed with Pure black only.

No.

> 2)Any method to get the raster data for image in one slot and text in another slot.

No.

The CMYK colorspace is probably the closest you will get - black (and
grayscale) text will come through using black ink only while color
images/text will predominantly use CMY.

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Michael Sweet, Easy Software Products           mike at easysw dot com