Stuart Noble wrote:

But the more recent ones, though having a black cartridge, will not
print without a colour cartridge.


Exactly. Sharp practice or what.

Not necessarily. Some print heads would be damaged if run without ink.
And some of the better photo printers will use small amounts of colour
even when printing just black so as to get a better range of grayscales
and more luxurious blacks.

--
Cheers,

John.

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