Photosmart C4680 has ink but prints only a blank page

Question

I have just installed this printer on my Mac PPC computer, using OS X 10.4.11. I downlaoded and installed the proper driver and software for it from HP. All is running, and appears as it should -- except nothing prints out, no ink being put on the page, but a blank page.
The utility says there is ink in the cartridges, although low, in both in color and in black cartridges.
I get no print even when not hooked to my computer, simply using the Copy function. I get no print when printing from a file. All I get is a blank page. 
If I scan, it does scan the page fine, and opens it on my monitor -- but if I send that to printer, it prints a blank.
I have run the cartridge cleaning operation three times now. No difference. I tried the alignment, but find that to do it, it first has to be able to print something! 
I am using the right driver. All seems to function fine -- except all prints are just a blank. Again, the utility says I do have ink in both cartridges. Yes, it is set up properly in my System Preferences -- all the setup is fine. It seems to be fully accessible and fully functions -- except It just isn't putting out any ink. 
So, what is wrong here, what do I need  to do?

Answer 1

Since I posted nearly a year ago, I learned about HP. It seems HP is the worst for rejecting generic ink  cartridges. From what I learned, HP does something in its chip that prevents it from being reset, as chips for other brands can be. As such, generic cartridges have to have the original chip replaced. Because of patent issues, they can't make the chip exactly as HP does. Thus, problems, as planned by HP to force you to buy their exhorbitantly high priced ink cartridges and exercise a monopoly.
I ended up getting rid of that machine -- and getting an Epson. Epson chips are easily reset, so the orignial chip can be used, and there is no problem with generic cartridges.
If you want to spluge the price of a HP brank cartridge, your machine should work. After going throhgh several generic cartridges, I found they worked at differing amounts, including not at all, but none printed for more than about a quarter of the cartridge. That is, even if you get a generic that works, it won't work for long.