jmgalvin means that the vast majority of ink jet printers accept RGB data only. They still print with CMYK inks. The problem is that your printer is not a PostScript printer and InDesign offers no CMYK output settings for non-PostScript printers.
If accurate color proofing is required, take your file to a print service provider. Otherwise, the color output of your printer will be a gamble as the HP print driver and printer will convert RGB to CMYK without the guidance of InDesign.
- - picklefish - -
Why is everyone in this forum responding to me as picklefish?