Hewlett Packard
#564, #910, #920
Theory - The ink in these cartridges are retained because
There
are two methods you can use to refill this cartridge. Method One 1. Put the cartridge on some paper towels in an area
2. With a rubber
band tightly put on the orange cap that covered the outlet port. 3. Fill the syringe with 5 ml. of the appropriate color of ink. 4. You are going to fill the cartridge through the vent hole. To see the vent hole peel off the top label.
If you can see the impression of the vent hole through the label then just push the needle through the label into the vent hole and down into the sponge. 5. Very S-L-O-W-L-Y inject ink into the small "vent hole" located on top of the cartridge. 6. After the ink is injected keep the orange cap on or keep your finger over the outlet port for another minute. This will give the ink time to soak up into the sponge. 7. Now take off the orange cap or remove your finger from the outlet port and place the cartridge in a cup or bowl or anywhere else you can tolerate some dripping. Let any excess ink the sponge can't hold drip for about 2 minutes.
8. Put the cartridge(s)
back into the printer and run 1 - 3 cleaning cycles
as per printer instructions.
On the 564 and 920 series cartridges,
there is an electronic counter embedded in a small computer chip/board. This
counter starts at a high number and decreases for every character printed.
Eventually, the counter reaches zero. At this point, an error message is
generated by the printer. If you click "OK" to the error message, the
printer will continue to print. However, the ink level display will not show
correctly with that cartridge. Method Two InstructionsStep 1) Put the cartridges on some paper towels in an area where you can tolerate a spill. Step 2) Turn the cartridge up side down so that the outlet port of the cartridge is facing upward. Step 3) For the standard 564 fill the syringe
with 4 ml. of the appropriate color of ink Step 5) Replace the cartridge and run 1 -
3 cleaning cycles as per printer instructions.
On the cartridges,
there is an electronic counter embedded in a small computer chip/board. This
counter starts at a high number and decreases for every character printed.
Eventually, the counter reaches zero. At this point, an error message is
generated by the printer. If you click "OK" to the error message, the
printer will continue to print. However, the ink level display will not show
correctly with that cartridge.
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