CUPS printers and HP 5600 printer

[Chris Hobson]

I have an HP 5600 printer that worked just fine with my Fedora box until 
I changed the black cartridge with a new HP one. On my windows machine, 
I got messages about aligning the print cartridge, and everything worked 
fine after that. However, using CUPS on my (much preferred) Fedora box, 
the printout is always less than good quality, and the system complains 
that the printer is low on ink (which it isn't, since its a new 
cartridge and only used a few times so far)

The printout quality is a slightly slight shade of blue / black, rather 
than the impressive deep black I get on that (horrible) Windows machine.

It seems to be due to the CUPS printer as my wife gets the same thing 
and she has a Ubuntu machine

Thanks!

Chris