How do you recharge a ink cart.

Patsy, every manufacturer has a different design ink cart, and each one takes a different technique to refill them. I find it is much easier to purchase "refillable" carts, they're designed to be refilled. I buy them from:
HP Canon Epson ink refill kit continuous ink supply system cis ink...

You can use a degreasing spray or methyl alcohol to clean up the residual ink. Use a brush to clean and wipe and BLOW using a hair dryer to fully dry up the residue.
Make sure that there is no dirt at the terminals, clean and set with original cartridges from HP.
Now if there is errors then you must disconnect printer, uninstall then install the driver, connect printer when prompted and print a test page.

a refilled cartridge IN NO WAY can lead to printer failure
the ink is the last thing on printer and has no effect to mechanical failures.
check here how you can refill your cartridge
http://www.youtube.com/watch?v=II9gpIXs_lE

SPACILLY FOR HP PRINTERS DONT USE THE REFIL CART

this problem due to refill cart replace with new one ur problem will be resolved

Are you using "refilled" hp cartridges? If so, they may be interpreted as "empty" or a non-hp cartridge if the carrtidge shell was manufactured prior to the recent time that hp began coding the electrics on the same type cartridges. This can also happen if you are using "compatibles". If this is the case, try buying original new hp carts. If that is what you already have, return the cart to the store as defective and as for a replacement.

Hi:
I would say replace them both, but first make sure you removed the print head protectant strip from the cartridge. Go into you printer properties and check your ink levels to see if the color is empty, also make sure you use HP ink cartridges, off brands do not meet the required spec's all the time. And never use ink refill for cartridges as sometimes the ink they use is to thick for the HP Printer.

i have an hp and find that they (color carts) cannot be refilled- the clever b*st*rds!! they stepped the ink reservoirs so, if you don't insert the re-fill needle 'just right', it bleeds into the others and you end up with a 'muddy' print-out! you need to buy a new hp cart, or shop around for a generic cart (cheaper) google your product & cart #. you may find a source for a cheaper cart.
the black carts. can be re-filled!
good luck!

for a succes refilling you can find averything you need in this kit
http://inkfilling.net/start-pack-a-hp.html

 each time you refill a cartridge you mast remove all air bubbles and old ink from cartridges
in this pack you can find refill clip to remove it

I found the info about here:

http://printerinkcartridges.printcountry.com/other-printer-brands-printer-ink-cartridges-articles/kodak-inkjet-printers-kodak-ink-cartridges-kodak-com-inkisit-com/how-to-recycle-refill-kodak-printer-ink-cartridges/

However, after filling a black cart and placing it back in the printer it said that I needed to change the Black cart..........

There is a chip on the cart and I have been looking for a solution, but as of yet....nadda

1. Took out the color ink cart and clean the copper contacts of the ink cart with cotton swab, make sure that you do not touch the silver nozzle .
2. Try new ink color ink carts as someime this issue came up when the ink carts are about to finish up.
3. Replace the ink carts and do not us a refill ink.