My HP Officejet 5610xi All-in-One is printing oddly lately. An all-black text document will print magenta text. Printing color imagery also results in an all magenta result. However, copying something either in color or black, it prints the black just fine. Both ink cartridges are new as of a few days ago, when my wife first encountered this problem, assumed she was out of ink, and changed the cartridge.
I'm printing from OSX 10.6.8, and have not changed my printer setup since it worked correctly. It is plugged in via USB. Here are my printer settings: