We are unable to print color from the hp officejet 9120. The yellow bar shows that it is empty yet we have a new ink cartridge and a fairly new yellow ink head.

Some printer software that detect ink levels won't recognize a cartridge that's been refilled. They treat the cartridge as empty although you've filled them with ink. You can try removing the HP software that pertains to the printing functions only (not the scanner abilities). You can also do a Power reset. Remove the printer cartridges, turn off the power, remove both the Power cord and USB cord (if applicable) for 10 minutes. After reconnecting the USB and power cords, install the cartridges as you normally would. The printer should treat them as new.

Hi,
The inkjet printers print colors as they combine the major 4 colors contained in the cartridges CMYK (or said in words cyan, magenta, yellow and black) in some proportion.
If you print black the printer gets ink from the black cartridge only. If the black cartridge is empty some devices start to print black as a combination of the colors in the color cartridge - for example gets some of the cyan, gets some of the magenta, gets some of the yellow.
In your case maybe some of the other colors are empty too (or the nozzles are clogged) and the printer cannot prepare the correct mixture of colors to start printing black.
I suggest you to change both black and color cartridges.
Hope this helps.

Yes, you have. Inkjet printers use color ink in cleaning cycles, so your color cartridge will be eventually empty even if you only print in B/W.
If you need to print/copy a lot of B/W documents, I would recommend a laser printer, or an inkjet printer with individual color cartridges (printers from Epson, Officejet from HP, etc). You'll save some money by using those.

Problems with Hewlett Packard Officejet 4355 printing can often be due to issues with the cartridges. The printer has two cartridges, one black and white, and one color. Both can be physically inspected for problems. The printer also has a self-test report to determine if there is a non-obvious problem with the cartridge. The report can provide valuable information, including status.

1

Take the black ink cartridge out of the slot on the right. Be careful not to touch the ink nozzles or the copper contacts.

2

Look at the cartridge and make sure that the plastic shipping tape isn't still attached. There shouldn't be any tape covering the ink nozzles.

3

Replace the black cartridge and then perform Steps 1 and 2 on the color cartridge. The color cartridge is the one on the left side.

4

Print a self-test report. Load paper in the tray and press "Setup." Press "2" and then "4." The HP Officejet 4355 will print a report. Make sure the lines of color extend across the page. Missing, faded or streaky lines can indicate a cartridge failure. If the color bars don't show as black, cyan, magenta and yellow, you should clean the cartridges.

5

Press "Setup" and then press "6" and then "1." The print cycle will commence. Allow it to complete and then print another test report. If the test still shows errors, replace the cartridges.

you can check the ink level from following steps Method one: Check the ink levels from the idle screen on the color graphics display Look for four icons at the bottom of the color graphics display. The icons represent the ink level remaining in each of the four color ink cartridges: black, yellow, light cyan (blue), and light magenta (pink). A larger and more accurate view of the ink levels can be displayed from the Setup menu. If an ink cartridge containing non-HP ink is being used, a question mark displays instead of the ink drop in the icon for that cartridge. The HP All-in-One cannot detect the amount of ink remaining in ink cartridges that contain non-HP ink. Figure 1: Non-HP ink icon NOTE: HP cannot guarantee the quality or reliability of non-HP ink. Printer service or repairs required as a result of printer failure or damage attributable to the use of non-HP ink will not be covered under warranty. If a hollow ink drop icon displays, the ink cartridge represented by that color icon has very little ink remaining and will need to be changed soon. You might be able to continue printing for a short period of time with ink remaining in the print head assembly. Replace the ink cartridge when the Replace Soon warning message displays on the color graphics display. Figure 2: Low ink level icon When the Empty Ink message appears on the color graphics display, the indicated ink cartridge is out of ink. Replace the indicated ink cartridge. Method two: Check ink levels from the Windows computer The estimated amount of ink remaining in the ink cartridges can be checked from the computer. See the on-screen HP Director Help for information on checking the ink levels from the Printer

1. Open the printer Toolbox. To do so, do one of the following:
   • Open HP Solution Center, click the Settings menu, then point to Print Settings , then click Printer Toolbox .
   • Right-click the HP Digital Imaging Monitor in the tray, then point to your printer model name, and click Display Printer Toolbox .
   The Toolbox opens.
2. Click the Estimated Ink Level tab. The estimated ink level gauges display.

Method three: Check ink levels from the Setup menu

1. Press Setup on the printer control panel.
2. Scroll down and select Display Ink Gauge . The Ink Gauge status from the Tools menu will only display on the color graphics display.

If the ink level is low and the cartridge is new please contact the dealer from whom you got the cartridge and if it shows that the ink level is good enough please comment so that i can give you another step to perform

Every cartridge needs to have ink in it to print. Even if you only want to print black and white and one of your colors is empty. A dirty little industry secret is that when you print black....it also makes the colors print too...so you get to buy even more ink than you need to!

slowly off and on the printer for five times without cartridge, printer saves data of cart of last 5 only so next time it reads full ink..

First check that printer is not set to print B&W. Open an application to print a page, for example Word. Chose print command from the file menu on top bar , the print window will open.
In the print window press the 'properties' button, and check tha printer is set for color printing.t

Once you are sure printer settings are not in B&W, read the following.
Even if it shows color at 75, the printer color level may had not been reset since the cartridge had been replaced, in this case the cartridge may be empty.
If the cartridge is not empty it still can be faulty (eg. ink insid is dry).
In either case replace color cartridge with new original one.

If after you replace the cartridge it still does not print colors, then color head is faulty, at this point consider having the printer repaired by a technician.

Cartridges new or full? Reused cartridges do wear out.

Check the color side of the carriage....there is a metal piece in there that breaks free from the side and will "stab" the circuitry board that the cartridge comes in contact with...you will probably see a hole in it...I have replaced several print carriages...fairly common problem with all of the HP printers that use the 96 and 97 cartridges...hope this helps