Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark"
<paul.roark@...> wrote:
>
> Greg,
> 
> >> The 260 carts are going to be a challenge for the third party
vendors to
> >> clone. So far, I don't think there are any.
> 
> >Is there something significantly different about them?
> 
> There are a couple more contacts on the chip, and wires that go into the
> cart.  It looks like they are measuring resistance to get a better
measure
> of the ink level.  My guess is that they have built a patent forest
to try
> to stop the third party ink business.  The 220s disappearing are
probably
> part of this effort.  That is the printer Epson is losing the most
on to the
> third party ink people from what I can tell.
> 
> Paul
> www.PaulRoark.com
>


If it uses the two or three chamber design like in the previous carts,
a resistive level meter will be difficult, unless they are just
measuring that last chamber to try and get all the ink out. You can be
sure that the Chinese companies that make the third party carts are
way ahead of all of us.

Do the second set of carts have all the same contacts too?

I'll ask even though I know the answer from previous times... Anybody
have any empties they don't want?