Ran out of black cartridge ink at the most inopportune moment. It's a pretty old HP all-in-one printer at this point, but thankfully BB still carried it in-stock. Installing was very easy and I was able to print some important documents that same day. Only buy genuine HP ink, third party stuff is too unpredictable in terms of performance.
There is no such thing as a C4700. The C4700 series is a family of Photosmart all in ones that includes the C4740, C4750, C4780, and C4795. The 60 series ink works for all of these, and a few other models as well.