Dark Prints

I have a HP 7510 Printer and all my prints are coming out dark but they look great on my LapTop monitor using lightroom 4. or CS 6

What would be the best printer settings to place on my printer.

I have the new Imac 27 inch on order and intend to get the monitor calibrated. Until then I would like to get some decent prints from this printer.

Thanks you,

Jerry

This comes out dark