can not read raster data

[Ganesh]

Hi,

I am developing a driver for card printer.
In my filter code I am not able to read the raster data.
I am not getting any error. But If I print the data to the file. I am getting junk data only. Can you please guide me to get the correct raster data.
I am using the following filters for my printer
pstops -> pstoraster->rastertocard.
In the rastertocard filter I am getting the problem


Thanks
Ganesh