Use of black ink

nO IT WILL REJECT THAT AND NOT PRINT.

Yes, all HP Deskjet printer models feature a 'single cartridge print mode'. Just remove the cartridge you don't wish to print with; the printer will automatically revert into either greyscale printing (if color cartridge remains installed) or black only printing (if the black cartridge remains installed). However, if the installed ink cartridge is electrically damaged/defective the printer will display an alert message; it will need to be replaced with a new cartridge.

For more information on the use of refilled ink cartridges or advanced HP printer problem diagnosis please visit Inkjet411:
http://www.inkjet411.com

discovered recently that printer cartridges have a use by date on them, and that if you use it the printer will not recognise it, only answer is to insert a new one, or ignore the printer ( l have a by-pass function on mine so still use it until l am ready to replace the offending cartridge

1. Turn on your printer.
   
   
2. Open the front cover.
   
   

The ink cartridge carrier moves and stops at the loading position unless the printer is busy.

1. Press the tabs on the cartridge lids, then lift the lids.
   
   

1. Remove the old ink cartridges.
   
   

1. Store the cartridges in an air-tight container or dispose of them properly.
   
   
2. If you are installing new ink cartridges, remove the sticker and transparent tape from the back and bottom of each ink cartridge.
   
   

NOTE: You can use your printer with one cartridge (color or black) at a time. To extend the life of your color cartridge and improve printing speed, install both a color cartridge and a black cartridge at the same time.

1. Insert the new ink cartridges. Make sure the color ink cartridge is secure in the left ink cartridge carrier and the black ink cartridge is secure in the right ink cartridge carrier.
   
   

1. Snap each lid closed.
   
   

1. Close the front cover. The front cover must be closed to start a print job.
   
   

1. Open the Dell Printer Solution Center by clicking Start® Programs or All Programs® Dell Printers® Dell Photo Printer 720® Dell Printer Solution Center.
   
   
2. Click the Maintenance tab.
   
   
3. Click Install a new print cartridge.
   
   
4. Click Next.
   
   
5. Select the type of cartridge you installed.
   

NOTE: Specify whether the cartridge is a new cartridge or an old cartridge (one that has been used before). If an old cartridge is incorrectly identified as New Cartridge in the Dell Printer Solution Center, ink levels may be incorrect.

1. Click Next.
   
   

1. Buy only genuine Dell replacement cartridges. Dell states their printer cartridges cannot be refilled with ink and that only their cartridges work in the printer.
2. Bring the cartridge carrier of the printer to the center so you can access the ink cartridges. Open the cover of the printer and the carrier slides to the center. Make sure the printer is turned on.
3. Remove the old black ink cartridge to use the color cartridge. If you allow the old black cartridge to remain in the printer, you will get error messages that the ink is low. The printer may also keep reverting back to the black ink as the default color when printing.
4. Open the package of the new color cartridge carefully. Remove any blue packing tape that's on the ink cartridge. Take care not to touch the gold area or you could damage the cartridge. Insert the new color cartridge into the correct slot in the printer, the right side of the cartridge carrier. The ink cartridges aren't interchangeable; they need to be placed in the correct slot.
5. Close the cover on your printer after installing the color cartridge. Run a print test to make sure the color cartridge is installed correctly. Use the Dell Ink Management System to monitor your printer and all-in-one functions. Thanks Thiru

Hmmm....that sounds to be an issue with the ink cartridges...

You might be using ink cartridges purchased other than Dell or Staples...since these are the two who sell Dell Ink.

If thats not true, then take out both the cartridges in the printer.

Lets isolate the issue

1. Try only Black cartridge on Color slot(right). If you get Install both ink cartridges error, then its an issue with the Black ink cartridges and if you get message that install Black ink cartridge then its an issue with the prrinter.

2. Now install only color cartridge on Black cartridges slot(left), If you get color cartridge missing then its an issue with the Black cartridges which you are using and if you get install both ink cartridges then its an issue with the black slot on printer.

3. If issue found to be with Black ink cartridge then wipe the Nozzles(bottom) of the ink cartridge with lint free cotton cloth from back to front 5-6 times.

4. Also try replacing the ink cartridges purchased only from Dell or from Staples. Purchased from somewhere else or refilled might not work.

5. If issue found to be with printer, then i would suggest you to purchase new printer then.

Hope this fix the issue

you need to print only in black if that is all the ink you have, and also you need to remove the color cartridge as it still registers in the printer as able to be used, although it is empty or near so. Did you remove the tape over the print head fron the new ink cartridge? Do a print head alignment, or use the toolbox icon to tell the printer that you just replaced the cartridge. Some HP models chip the ink cartridges so even a refill wont register as a full tank and the printer wont print. chip needs to be reset (difficult) or just replaced with a new cartridge.

i ended up putting a color and black cartridge in and everything is fine.

Make sure you are using the correct cartridges for the Z35. They should be #26 (color) and #16 (black).

Make sure the contacts are clean where the cartridge connects to the printer electrically. A little alcohol wipe is good for this. Clean contacts on both the cartridge and the carrier in the printer.

Make sure the printer settings are set properly to print in color on the PC. Even if there is a color cartridge, if the PC only tells it to print black ink it's not going to use the color cartridge.