The ink indicator is only an approximation of ink used. Don't confuse it
with an actual indicator such the gas gauge on an automobile. Rather think
of it more as an indicator light. The only time the message is based upon
actual tank conditions is when the reservoir side is nearly empty. At that
point a light beam is projected through a prism in the bottom of the
cartridge and the low or out of ink indication is then shown. See the
following link for an illustration of the Think Tank system.
http://www.steves-digicams.com/2003_..._i860_pg2.html
--
Ron Cohen
"Billiebob" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Between the time I purchased my i860 in December and a few couple
> weeks ago, I printed off lots of photos (mostly 4x6, a few letter
> sized sheets), and the ink tanks hardly dropped. Then, after two
> weeks of printing maybe six 4x6 photos, the tanks are down to 1/4
> full. What happened?
>
>
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