Can anyone advise? My printer, Canon i550, has started printing strange colours in photos. Prints are very 'orange hue'. I did a complete change of all 4 cartridges, but still same. I suspected the black was at fault, so did a couple of 'cleaning cycles' and did a nozzle check. Everything printed out OK. I made up a 'test' document - comprised of lines of text in different colours, one line red, one line blue etc etc ending with a line of black. When I print this the 'black' line of text is a purple-ish colour instead of black, and the other colours are a bit insipid-looking.. If, however, I print a normal black text document it comes out fine!! Can anyone suggest what might be wrong? Thanks.
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