The black ink head does not print . I have run a print check as well as cleaned the head and during the test print the black ink prints however when I attempt to print a document it will not print in black. The head will print if I change the font color to gray.

If the nozzle test doesn't print black, then no black ink is flowing.
Run a "head clean", and do the nozzle check again.

First place to check is that print cartridge. Also make sure the software is set to print in black.

Welcome to FixYa!

Here are my suggestions:

Confirm that the Ink Tank is installed properly.
If the ink tanks are not loaked into place, the will not be supplied to the print head.
Remove tape from the
The ink tank requires air to flow through it so ink can move from the reservoir to the print heads.
Confirm there is no orange tape across the top of the ink tank.




Try to use other Black Ink Cartridge. The cartridge might be defective.

I hope this helps.
Thank you for using FixYa.
Keep me posted.
Jas247

Hi

Clean it manually by removing the black ink cartridge and rub the print head into a paper with rubbing alcohol until ink flows more. Then run the print nozzle to clean the print head thoroughly. After, try to print again.

If not, dip the print head only into hot water for 5 minutes and then run the print nozzle.

Let me know if you need more help

Found this on the Web for Your Printer. You can download the Manual from Epson.
If you find this helpful, pls rate me.

http://files.support.epson.com/pdf/nx100_/nx100_qr.pdf
Checking the Print Head Nozzles
If your printouts are faint or have gaps in them, some of the nozzles in the print
head may be clogged or ink may be running low in one or more of the ink
cartridges. Follow the steps below to check the print head nozzles.
1. Load letter-size paper in the sheet feeder.
2. Turn off the NX100 Series.
3. Hold down the y Stop button as you press the P On button to turn the
NX100 Series back on. Hold down both buttons until the P On light begins
to flash, then release the buttons.
Cleaning the Print Head 21
4. Check the nozzle check pattern that prints to see if there are gaps in the lines.
5. If there are no gaps, the print head is clean. If there are gaps or the pattern is
faint, clean the print head as described in the next section.
Cleaning the Print Head
If print quality has declined and the nozzle check pattern indicates clogged
nozzles, you can clean the print head. Print head cleaning uses ink, so clean it only
if necessary.
Note:
You cannot clean the print head if an ink cartridge is expended, and you may not be able
to clean it when a cartridge is low. You must replace the cartridge first (see page 23).
1. Make sure the NX100 Series is on and the B ink light is off.
2. Hold down the y Stop button for three seconds to start the cleaning cycle,
which lasts around one minute.
Caution:
Never turn off the NX100 Series during head cleaning or you may damage it.
3. When the P On light stops flashing, run a nozzle check (as described on
page 20) to verify that the print head is clean.
4. If there are still gaps or lines, or the test patterns are faint, run another
cleaning cycle and check the nozzles again.
Note:
If you don’t see any improvement after cleaning the print head two times, turn off your
NX100 Series and wait at least six hours to let any dried ink soften. Then try cleaning
the print head again. If quality does not improve, one of the ink cartridges may need to
be replaced. If that doesn’t help, contact Epson as described on page 31.
If you do not use your NX100 Series often, it is a good idea to print a few pages at least
once a month to maintain good print quality.
Good Luck and Please rate me.

First thing to do is a head clean then do a test print. Do you see any of the black lines?
If not, don't do a deep clean as this uses up too much ink. Remove the ink cartridges and then remove the print head unit.
Run the print head under a hot tap for a few minutes until all the run off is clear. Take it outside if you can and shake it dry vigourously. You can use paper towel if you like but try not to wipe across the nozzles. Make sue the contacts are all dry and refit it to the printer. reinstall the ink cartridges and print a few test pages - the first couple may well be wasted but then it should start to print properly.
Is the black still missing? If it is do another head clean and another test print. Any improvement? If you start to see some black do some more head clean routines and it may well come back to normal. If on the other hand you see no trace of black at all, it could be that the print head is worn out and needs replacing.
This printer is now of an age where the print head may well be failing. Mine had to be replaced last year as one of the colours stopped printing.
The head is not exactly cheap - but it's cheaper than buying a new A3 printer.

Either the print head for black is faulty, or the wiring to the black print head on carriage are broken. Try also cleaning the metal sensor to the black cartridge inside the ink carriage.

1. Make sure you removed the tape from the ink cartridge.
2. Press the <Menu> button on the printers operation panel.
   
   
3. Press the left [<] or right [>] arrow buttons to select [MAINTENANCE].
   
   
4. Press the <Set> button.
   
   
5. Press [<] or [>] to select the cleaning setting you want. Select [HEAD CLEANING] for normal print head cleaning. Select [HEAD REFRESHING] for deep print head cleaning.
   
   Note: [HEAD REFRESHING] uses more ink than [HEAD CLEANING], so perform [HEAD REFRESHING] only when necessary.
   
   
6. Press <Set>.
   
   
7. Print a Nozzle Check Pattern and perform at least two Head Refreshing if the pattern is not correct.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe


I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

You have to run a head cleaning cycle:
Follow these steps to clean the print head:

1. Make sure the Stylus CX is on and the ink light is off.
   
   
2. Hold down the ink button for 3 seconds until the On light starts flashing. The Stylus CX runs a head cleaning cycle and the On light flashes.
   
   Caution: Never turn off the Stylus CX while head cleaning is in progress. You may damage it.
   
   
3. When the On light stops flashing, turn off the Stylus CX.
   
   
4. Load letter-size paper in the sheet feeder.
   
   
5. Press the ink and On buttons together and hold them down for about 3 seconds. The Stylus CX turns on and prints a test pattern, which includes a nozzle check. Shown below are some examples of what the nozzle check may look like:
   
   Nozzle check pattern with no gaps Nozzle check pattern with gaps
   
   
6. Examine the nozzle check. If it does not look like the nozzle check pattern with no gaps as shown above, repeat steps 2 through 6.

Note: If you don't see any improvement after cleaning the print head three times, turn off the Stylus CX and wait overnight. This lets any dried ink soften. Then try cleaning the print head again.

If you do not use your Stylus CX often, it is a good idea to print a few pages at least once a month to maintain good print quality.

Your black ink printer head might be blocked by dried materials. Try to open your printers maintenance software and execute head cleaning procedures. Try to print a test page after every head cleaning or you may run print head diagnostics. If the black ink still doesn't print, try to use another black ink cartridge and compare with initial results.