Cannon mp510 stopped printing black.other colours OK. Nozzle check - nothing prints in black at all yesterday it was fine.

SOURCE: Canon i560 won't print black text anymore

I had the same problem, even when I only selected grayscale printing, my printer would use all 3 colors to make black, and my black cartridge would never get used. Try this:
On printing preferences change your Media Type to Transparency.
This should solve the problem and stop robbing your color tanks when you just want black

SOURCE: cannon MP510 printer has Error, - The type of print head

I solved this on mine by removing and reinstalling the print head.
1. Remove and set aside the ink cartidges (don't make a mess)
2. lift the gray print head lock lever that is to the left of where the ink cartridges go.
3. Lift out the print head out without touching the ink ports inside, the contacts on the back, or the print nozzles on the bottom. The print head is the grey thing with circular ink ports that seat the ink cartridges. there are good pictures in the PDF of the Easy Setup Instructions available on the Canon Printer website. Look under the printer, then support, then downloads: http://gdlp01.c-wss.com/gds/0900002776/mp510_esi_us_v2.pdf .
4. Put the print head back in, lock the lever, reinstall the cartridges in the roper positions. And voila!
If this doesn't work you may actually need a new print head.

SOURCE: black cartridge emptied half way

Routine maintenance and keeping full ink tanks will prevent this problem, however if you have the problem you can resolve it by doing the following:
1. Clean your ip3000 print head using denatured alcohol solvent which can be purchased from most hardware stores. If unavailable, use 91% Alcohol (isopropyl alcohol (first aid antiseptic) which is available for less than a dollar at most walmart pharmacy departments.

*Warning: You may want to usea pair of latex exam gloves as this is a messy process and can stain your fingers.

Supplies needed:
Isopropyl Alcohol or denatured alcohol
paper towels
latex gloves
sink, bowls and or basin
can of compressed air
very small screw driver
tablespoon or baby bulb type syringe
warm water
Patience

1. Lift print head from printer. It pulls out easily because it is held in with the same down lever that holds the cartridge in place.
2. Put two layers of paper towels in the bottom of a dish to protect sensitive sprayer heads.
3.Put enough solvent in dish to cover the screens on which the cartridges sit when in use.
4. Take the two small screws out that hold the white ceramic piece
5. Gently, pry the ceramic piece back and away , to reveal the underside (No need to pull away the glued points on the sides.)
6. Gently, move head up and down to slosh solvent aeound it the best as you can. Use a table spoon or syringe to pour solvent over all orifices in the print head, turning it upside down and then back a few times.
7. Use canned air with a plastic straw to blow into and through all orifices, slternately sloshing/swishing and pouring solvent over head (be carefull not to touch any of the holes, screens, or sprayer heads with anything)
8. Empty dirty solvent from bowl and replace with paper towels and clean solvent. Soak for approx 10 minutes. Rinse again with clean solvent poured directly on all parts, letting solvent overrun and fall into dish or basin.
9. Gently shake the solvent off the head, take it outside and spray with compressed air into all orifices to clear out and help evaporate any remaining solvent. Let sit on clean paper towel for approx 20 minutes. (There may be a little ink bleeding out of the head, but once it dries completely it does not present any problems.
10. Reinstall head, cartridges and it will print like a new printer.

SUGGESTION: For many years of problem free printing, keep a double set of ink cartridges, one set full at all times. Whenever a cartridge runs out of ink, replace it IMMEDIATELY,with a new one or a refilled one. This gives the print head no chance to dry out and create clogged heads. Routine maintenance of cleaning the heads every 24 months does wonders for keeping your ip3000 in new condition.

Happy Printing .

SOURCE: black ink will not print. Colours ok

Neither solution will help, Brother has had some bad printheads and the only repair is to install a new printhead. It's a shop repair and runs around $170.00. Under warranty there's no charge. The thing you really don't want to do is blow air into the system as it takes another full ink to get the air bubbles out. Sorry for the Stupid help above.

SOURCE: Canon i250, black text won't print, but ok with nozzle check

Canon i250. Instructions on this website solved the problem of flashing green and orange lights, but now the black won't print. Changed ink cartridges, but still no print. Did a diagnostic nozzle check, and the black DID print. What do I do now?