Question Author
Thanks for all your answers. Although I haven't used the cartridge much, I had it in a drawer for a few months before opening the cellophane and using it. I always tend to keep one as a spare but I wont do that any more. I am going to buy another new black cartridge and try that. I did the test and cleaned the print head, the page had colour on it but no black at the bottom. Both the cartridge logos now have exclamation marks on them so looks like this could be the problem, before I did the print test both cartridges were almost full though ...Watch this space and thanks again folks ...