Updated May 13, 1999.
HP 51649A and C1816A Cartridges
Many different HP Deskjet 600 Series Printers
The ink in these cartridges are retained because the cartridges have internal
sponges. The two cartridges are identical except for the colors and inks used.
Inks are available at www.oddparts.com/ink/Ink_Listings/inkjetlist.htm
Step 1) Put the cartridge on some paper towels in an area where you
can tolerate a spill.
Step 2) We must remove the green or blue top. Two methods:
- Gently clamp the cartridge bottom in a vise or similar device. Grab the
top with a large wrench or set of pliers and crack off the top. This will
likely break some plastic, but this is generally cosmetic damage.
- Lay the cartridge on a solid surface and put the edge of a sharp knife
at the intersection of the black and colored plastic. Hit it sharply with
a hammer. Then pull off the top.
Step 3) Keeping the cartridge on paper towels, take a syringe bottle and
fill it 1/4 full of ink -- about 8 ml.
It is important to keep the cartridge touching the paper towel while filling
to avoid the formation of large ink drops on the bottom of the cartridge. If
these ink drops form, cross-color contamination is likely because the ink
can migrate back up into the other color chambers.
Step 4) Insert the needle fully into the appropriate hole (from the
printhead side, the colors are probably Magenta, Cyan, and Yellow for the
51649A, and Black, Photo-Cyan, and Photo-Magenta for the C1816A. Insert a
toothpick and withdraw it to be sure.)
the ink very S-L-O-W-L-Y and watch until the sponge is saturated. (Some
colors will not be empty, so don't expect the sponge to absorb the entire
amount.) Be sure to inject deeply into the sponge to avoid
trapping air bubbles in the bottom of the cartridge.
Step 5) Repeat steps 3 and 4 for the other two colors with different
Step 6) Put the top back on and tape down in place.
Step 7) Set above a paper towel for an hour as a drip precaution. Expect a few
drips. Do not allow the paper towel to touch the bottom of the cartridge, as
it will draw out all of the ink. Remove any large hanging drops immediately.
To Clean the Printhead
- Only clean the printhead if you get poor print quality or no print.
- Be sure that you don't have an air bubble problem.
- If cleaning the printhead causes the situation to get worse rather
than improve, you probably have an air bubble problem.
- If you have an air bubble problem, you need to re-inject some ink
very deep into the cartridge.
- Follow the directions in the printer manual to run the cleaning routine.
- If this doesn't work, take the cartridge to the nearest hot water faucet.
- Turn on the hot water. Let it get hot.
- Put only the printhead portion (where the ink comes out) under the hot
water for 2 to 3 seconds
- Dry off the cartridge using a soft tissue.
- Re-insert the cartridge into the printer.
- Run the normal cleaning routine a few times.
- 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 Clean Your Sink
The ink is water-soluble. Use plenty of soap and warm water. You may also
need to use Comet or a similar cleaner if the stains persist.
To Clean Your Hands
On hands, the best substance to use is
Ink Be GoneTM, a
specially developed hand cleaner available from ACSI Bulk Inks.
(To place an order, Click Here.)
To Place An Ink Order
You can telephone us at 1-888-728-2465 (USA Tollfree) or 1+740-374-9949. You
can also Order Online
or by other ways including
by Fax, or by
Postal Mail, or by