CWatters wrote:
> This cart has the head built in right?
> air lock (usually cured by twirling it around in a plastic bag)
> just suck the ink out and put it into another cart.

The HP OfficeJet d145 has four separate printheads (black, cyan,
majenta, and yellow). It has two ink tanks (black, and a tri-color
tank). The tanks sit above the print heads but either can be removed
separately. There is a photo of the two at:
http://www.vdhsoft.be/img_art/big/15886.jpg

The ink tanks are all full. I'm don't understand at all how a print
head works but I see spinning it around and around in a plastic bag
whirling over my head as interesting. The print head is pretty large,
about an inch and a half long (see photo above) but still much smaller
than the ink tanks. Where does the air bubble form? The interior of the
printhead appears to be empty (it floats, for example, in a dish of
alcohol). Should my printheads have ink inside of them? There is a
screen at the top, about the diameter of a blouse button. And there is
ink oozing from the bottom metallic strip in two rows.

Where does the printhead print from?
Does electricity somehow cause the ink to shoot out the bottom?
Is the tiny tank that is part of the printhead supposed to be filled
with ink?

So much to learn. Is there a printhead FAQ out there somewhere?

Thank you, in advance, for your help,
Susan