Most HP cartridges have the head built in and those are the ones he is
referring to as running it dry and refilling can leave an air bubble in the
jets which the printer can't purge. You have to dissolve the dry ink in the
extremely small jets before anything will work. In your case swinging the
printer in a plastic bag won't work and could be dangerous. You may need to
replace the head with a new one or at today's prices replace the printer.
Your real problem is not using the printer often enough....


"Susan Sharm" <susanshaarm@yahoo.com> wrote in message
news:1131893033.762202.17440@f14g2000cwb.googlegro ups.com...
> 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
>