HP Officejet Pro 8610 e-All-in-One Printer - Manual (Page 259)

Black cartridge out of ink
The black cartridge is out of ink.
Solutions: Replace the black ink cartridge. For information about how to install new cartridges, see
Replace the ink cartridges on page 99.
CAUTION: Do NOT remove the empty black cartridge to print in Use Color Only mode.
To temporarily replace black with color, click Cancel Print and re-send the print job. The Use color ink
only? message appears before the job prints. The black cartridge will need to be replaced soon.
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