I live in Bombay (now renamed Mumbai), India. Here, the cost of a 40ml black
ink HP cartridge is around Rupees 1400 (approximately US$23), which is close
to 30% of an entry level inkjet printer. As is well known, HP's marketing
strategy is to "Sell the printer cheap and make all the profit in
cartridges", which means that they really have to prevent the user from
finding a way to refill the cartridge and reuse it.

Here, many small shops have recently sprung up that provide the service of
refilling used cartridges of models like 690C, 670C and 640C. Refilling
costs 6% to 8% of the cost of a new cartridge and you get reasonably good
printouts if the cartridge is not completely dry and the minute pores on the
head are not clogged.

When the new models are introduced that make refilling almost impossible,
those people offering refilling services will have to come up with
counter-technology!

Regards,
Bala

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