printing blue background?

I have a client with a HP deskjet and a mustek Bearpaw scanner
When he goes copy to the printer from the scanner it works ok and prints the actual document but it comes out every time with a light blue background, it only just started doing this.
I have reinstalled both devices with no difference.
So far I haven't found any reason for this.

Any help would be appreciated.

Cheers

 

Shouldnt you contact the manufactuer?

 

Have had a look on their web site under troubleshooting etc and done a bit of a search on google, gut because of the age of it, not worth to much mucking round.
It's also not the ink as he replaced that.

 

my printer started printing everything in pink. unless your printer is fairly new/expensive it would be best just to get a new one.

 

I know your probably right but I just thought I would try and figure why first.
Maybe I could sell them a MFC
The stupid thing is it only seems to be maybe the one doc, why i can't figure.
Thaks for your input.