Gray background stripes

[Paul Newall]

> I'm writing a driver for a Kodak ESP AIO printer.
> Now I have a cups driver that prints.
> It a monochrome only driver that translates from cups raster format to the Kodak format.
>
> Currently the problem is that my black text has a pale gray background (it should be white). The gray apears as a stripe behind the text, like a gray highlighter pen. Between the lines of text the background is white.
>
> I suspect the problem is in my filter and it's going to be hard to debug because the printer data is compressed in JBIG format so I can't just look at the data to see what's wrong.
>
> But maybe I'll get lucky and someone will recognise this problem and suggest what the cause might be?
>
It looks as if the JBIG data is OK. If I print first with the windows driver, then my cups driver works fine. The windows driver must be telling the printer something that my driver is not telling it (yet).