Cartridge refilling How do I fill the cartridges for this printer?

You need to specify what brand is your printer.But the procedure is as simple as dirty. Make sure you have a cloth or paper to handle the messy part :).
Requirements: 1. Printer-Ink 2. Syringe with thin needle3. Piece of cloth
I will write how to refill HP cartridge, because I don't know your model.Ususally Hp cartridges have colored or black spot ont white sticker.Under this spot there is a tiny hole. This hole is designed to be used for refilling. You need to pierce the spot with the needle and start the refilling process.Make sure that there are no bubbles in the syringe and start filling slowly the cartridge. Do not hurry! Don't fill the cartridge to its full capacity. If your cartridge is 20ml fill only 15 or 16ml.After you finish set aside the cartridge for 30 minutes so that the ink settle. This is it!Good luck!

Color Cartridge 1. Place the cartridge over somepaper towels in case there are any spills.Remove the label sticker from the topof the color cartridge. 2. Drill into the three small holeson the top of the cartridge to widen them so they will allow syringe needles. 3. Fill a syringe with 6 mL ofmagenta ink. Insert the needle into the refill hole that is located below thetwo protruding rectangles on the top of the cartridge. Slowly inject the ink. 4. Fill a syringe with 6 mL of cyanink. Insert the needle into the refill hole located below the large rectangleon the top of the cartridge. Slowly inject the ink into the cartridge. 5. Fill a syringe with 6 mL of yellowink. Insert the needle into the refill hole located below the small rectangleon the top of the cartridge. Slowly inject the ink into the ink chamber. 6. Replace the cartridge into theMX310 printer. Black Cartridge 1. Set the cartridge on some paper towels. 2. Drill a hole into the dimplelocated directly above the semicircle on the top of the cartridge.Fill asyringe with 20 mL of black ink. Insert the needle into the hole and slowlyinject the ink. 3. Replace the cartridge into theCanon MX310.

Printer cartridges have special inks and you cannot just put any ink into the cartridge.
When you purchase inkjet refills these come with cartridge filling instructions for your model printer cartridge.

HP printers do not remember the cartridge serial number to reject refills (certain Canon printers do though). It sounds like you have an air bubble in the sponge that is inhibiting ink from reaching the print head. I would guess that either you or the store/internet seller that refilled this cartridge hand filled it. These cartridges should be filled under a vacuum to remove air bubbles from the sponge and allow you to fully fill the cartridge (an air bubble takes up space that your ink could be occupying). I recommend Cartridge World or Office Depot for refills. Avoid internet sellers and refill shops that have one giant all-in-one machine that does the filling for them.

I'm afraid that this is a fairly common problem with refilled cartridges. Best to get a new cartridge and try it. Or, if whoever refilled it, guaranteed it, ask for another one.
Hope this helps.

remove some ink from the cartridge and clean the contact point of the cartridge and inside the printer, then hold the cartridge. when the cartridge not drop ink fix the in the printer

check this video it is very easy with no special equipment
http://www.youtube.com/watch?v=iMiTopIVMxM

HP #74 Cartridge Refill Instructions
Black cartridge
Instructions
1. Put the cartridge on some paper towels in an area where you can tolerate a spill.
2. Peal off the top label.
3. Fill the syringe with 20ml. of black ink.
4. Very S-L-O-W-L-Y inject ink into any hole (they all go to the same sponge, HP just used the same color mold for the black ink cartridges).
5. When finished, replace the top label or leave it off (it will make no difference in the printing).
6. Replace the cartridge and run 1 - 3 cleaning cycles as per printer instructions.
Or print the following pages:
http://www.refillinstructions.com/black.htm for Black

For best results, leave cartridge in printer for 8 hours after refilling so the ink can saturate the entire sponge.
A Refill Kit should include Ink plus the following:
One 30cc Syringe

have you succesfully refilled the cartridge before?
i'm not sure, but you might need a chip resetter to refill a cartridge

it's also possible it doesn't work if you have refilled the cartridge more than three times

i recommend you to buy a new cartrige instead of refilling