I found a HP PSC 1200 series printer that was not able to print in gray scale (black and white).
First I thought the driver would be the isue, so updated to the lasted version without succes.
Until I found out that some budget HP printers do not have a gray scale option in the driver. So you don’t have to look any further, just buy an other mark or a more expensive HP.
I can only make up one reason they are doing this. Making more money on color cartridges.
Shame on HP.
Models that are affected (I cannot verify, please comment to confirm):
HP Deskjet 3*** (3420, 3520 etc)
HP PSC1*** series (1100, 1200, 1210 etc.)
Source:
http://gathering.tweakers.net/forum/list_messages/1004167//hp%2Cgeen%2Czwart%2Cwit