It's black and white.

It's black and white - Troubleshooter - Technology - theage.com.au: "Frank Ashworth is puzzled. The colour ink in his high-end Canon S900 inkjet printer is disappearing and he wants to know where it is going to.

'I use the printer for text documents in black,' said Ashworth. 'Very, very occasionally I may print a document with a small amount of colour. Often when my printer stops printing because it is out of ink I still have black ink and it is one or two colours that are out. Why am I out of colours when I don't use them and still have black?'
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