I can't get black to print. Color printing if fine. But black is blank. I've scanned HP forums for an answer. Cleaning is not working. I hear lots of movement but I get no printout in the end. I've done a hard reset by holding down the OK + Help keys and unplugging the power cord. I held down those 2 keys again prior to plugging in the power cord. I then pressed the power button and the printer went back to factory settings. That didn't help either. Any idea what might be going wrong?

mayby cardridges are empty

Try reinstalling all of the printer software. If that does not do it then something is wrong with the printhead itself, specifically the area that controls the flow and metering of the black ink.

The first thing to check would be your print utility. Make sure that it is aware that there is a black cartridge installed. If you've gone through the cleaning process, try printing a test page and see if that will print the black. If not, it is either a setting in your utility telling it not to print in black and white, or a hardware issue with your printer. I will look up some documentation for your make and model printer to see what else the problem might be. Please advise with any changes when you check the print utility.

Possibility cartridge print head dry.

Solution 1:
Do a clean process cartridge automatically. Press START - Control Panel - Printers and Faxes - HP Deskjet d2360 right click and select Printing Preferences - Select the Color tab - select Printer Services - select Clean cartridge, wait for the cleaning process is completed - Perform Test print. If the print test results, has good graphics, press Finish. If the graph is not clear or drop out, repeat the cleaning process once again.

Solution 2:
1. Open the cover printer, cartridges will move to the middle position.
2. Remove the cartridge (be careful, do not touch the element cartridges or print head by hand), then stick the tip cartridge (print head) to clean water
3. Then, attach the print head to a tissue paper. If there is a tissue paper used in ink (black cartridges, black block lines, and color cartridges, three color red yellow blue lines), means the flow of ink to the print head is normal. If the tissue paper no trace of ink, attach back into the water, repeat the above process.
4. After process is complete no.3, clean the cartridges with a tissue paper (careful, do not touch the element cartridges or print head by hand, because it will damage the cartridge). After cartridge clear of the water, insert the cartridges into printer.

Black printer ink in HP Printer may fail to be recognized by the printer. Most times an error message will be sent indicating that something is wrong with the black print cartridge. Sometimes the printer may accept to print with the black ink, but the printouts may have horizontal lines and very illegible letters. In such a case a manual cleaning of the print head should be carried out. In doing the manual cleaning, one should spray Windex heavily on paper towel and wipe off the surface of the print head.

http://en.kioskea.net/forum/affich-40171-printer-not-printing-black

It sounds like your print head is dirty. Try cleaning the printhead in using the printers options, If that does not work replace the black printhead.

Did you try to wipe the cartridge.Maybe there's a clogs. inside.

Go to the printer Setup button, hit Ok, then look for Print Quality, acess print quality and go to calibrate colors, run this calibration for 3 times.
Then go to services and run a 2 cleaning modes
You can try printing blank pages selecting "cardstock" as paper type to clean the fuser

If the printer is printing blank pages, make sure you are using the correct printer driver and make sure the paper size is correctly selected in the driver. If the printer is printing black only, the Ink option in the printer driver may be set to Black instead of Color or a setting in the software may be set to print black only. Also, the print head nozzles may be clogged. From the Utility section found in the printer driver, clean the print heads by performing a head cleaning followed by printing a nozzle check pattern. A head cleaning and nozzle check must be performed as a cycle. After printing a nozzle check, examine the printed dot pattern. Each staggered horizontal and straight vertical line should be complete, with no gaps in the dot pattern. If there are gaps in the dot pattern, continue with another cycle. Performing up to 6 cleaning cycles is not uncommon if the print heads are severly clogged.

Sounds to me your print head is plugged up. This is not usual though because the majority of people use black ink much more. So, in your printer utility, do a deep cleaning. If that does not work, there is a thing called a purge unit in it. This is a usual way of draining waste ink to a pad that soaks it up. if the hose, or other parts are clogged, it backs the ink up and causes the print head to clog. If this is the start of it, do not waste your ink cleaning, and try not to let it sit too long. Contact canon, and let them kno what you think it is.