To order ink for you printer Please call 1-877-453-3640 or online www.bestinsupplies.com

HP #28 C8728AN Tri-Color Cartridge

Refill Instructions

 

Step 1) Put the cartridge on some paper towels in an area where you can tolerate a spill.

Step 2) Remove the label on the top of the cartridge. You will find 5 holes.

Step 3) Put the holes on top of the cartridge. Turn the cartridge so that the single hole is farthest away from you and the other 4 holes are closest to you. You may fill through any of the following holes:

To verify this information, insert an unbent paper clip into the hole you'd like to fill. See what color comes up!

Step 4) Keeping the cartridge on paper towels, take a syringe bottle and fill it 1/5 full of ink -- about 6 ml. When new, the cartridge holds 8 ml. When full, the cartridge holds 17 ml.

Step 5) Insert the needle fully into the hole. Get the tip of the needle to the bottom of the cartridge. Inject the ink very S-L-O-W-L-Y and watch until the sponge is saturated. You must get the needle deep into the hard sponge.

Step 6) It is not necessary to reseal the holes.

Step 7) Set above a paper towel for an hour as a drip precaution, perhaps over a small cup. Expect a few drips. Do not allow the cartridge to touch the paper towel at this point, since the towel will draw out the ink.

Step 8) For best results, let sit overnight before using. Tape over the vent holes if you plan to store for awhile to prevent drying out of the ink.

If you have a leak

There are only 2 reasons to have a leak with this cartridge:
  1. The cartridge has been overfilled. Remove some of the ink or let sit until it stabilizes.
  2. The cartridge has been damaged severely on the bottom. This should be obvious. Throw away the cartridge.

If the Cartridge doesn't Print

This simple cartridge is merely a sponge-filled box. Try the following:
  1. Be sure that you have put the ink into the bottom of the sponge inside the cartridge. If you don't get the ink to the bottom, the cartridge won't print.

  2. Follow the directions in the printer manual to run the cleaning routine. This cleaning routine is in the HP Toolbox software.

  3. If this doesn't work, take the cartridge to the nearest hot water faucet.

  4. If this doesn't work, remove the syringe needle from the syringe. Set the needle aside. Go to the sink. Put your fingers over 4 of the 5 holes. Using the syringe, squeeze air gently into the 5th hole to pressurize the cartridge, and (hopefully) push ink to the bottom of the cartridge and out the printhead. This is messy!

  5. If the cartridge has been sitting in your drawer for a couple weeks or more, it is probably dry. If so, you may need to rinse out the sponge with warm water injected repeatedly into the cartridge. After rinsing out the cartridge, let dry by putting in front of an air conditioner or warm air vent for several hours. Then attempt to refill normally.

  6. If this doesn't work, soak only the printhead in simmering water for up to 2 hours. You may add up to 50 percent ammonia for really tough clogs.

To order ink for you printer Please call 1-877-453-3640 or online www.bestinsupplies.com