Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Seth" <seth@m...> wrote:
>  Since it is different inks, it's doubtful.  Surely you jest. Epson use the
> the carts for compatibility? (That would be like Nikon using the same
> batteries.)

Your analogy is perfect.

Epson does use the same carts, they just put different inksets in them, and different IDs in the chips, so a 2200 will know it's not supposed to print with C86 ink or visa versa. 

Nikon uses the same batteries in many cameras. There's only so many ways to put a battery pack together. Basically, the five Nikons are, in order of increasing size,

EN-EL2 - Single rectangular cell for Coolpix 2500, 3500, SQ.

EL-EL5 - Single rectangular cell about twice the size of EN-EL2 for  CoolPix 3700, 4200, 5200

EN-EL1 - Two rectangular cells for Coolpix 4300, 4500, 5000, 5400, 5700, 775, 8700, 880, 885, 995.

EN-EL3 - Two cylindrical 4/5 AA sized cells for the smaller DSLRs, D100 and D70.

EN-EL4 - Six cylindrical 4/5 AA cells for the big DSLRs, D2H and D2X.

That's pretty much like printers. You can't put a 200g (1/2 pound) DSLR battery in a 100g camera like a CoolPix. And you can't put a 9600's 220 ml tanks into a desktop 2200.

There's the discontinued EN4, six AA NiMH cells for really big cameras like D1, D1X, D1H. It sort of predates decent, high capacity rechargable lithium.