My Dell 720 Photo printer is not printing properly...?

Odds are its the print cartridge.

If you have only tried the printhead cleaning program you can try to physically clean the printhead using the instructions from the site below in the sources section.

If it won't print after a physical cleaning its likely the printhead is clogged to the point it won't clear (see this in Epsons waaaay too often) or a damaged printhead. Just replace the cartridge......

**Note the link below is from Lexmark. They are the actual manufacture of the Dell injet printers. Dell just had their name put on it and changed the top of the cartridge so you couldn't use the Lexmark ones....

Do you refill your ink cartridges yourself? If so you may not have let the sponge soak up enough of the ink or let it set long enough. If not you may want to look into buying a "refill" kit if available for your cartridge so you can refill those colors.

I think you are going to need to buy a new printer or just get new ink. maybe?

you need to:

a. refill your colour cartridge

or

b. get a new colour cartridge (more likely by now because if you have been trying to print anyway, the cart is likely damaged now)

sorry :(