Question about HP Officejet Pro L7780 All-In-One InkJet Printer

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Printhead ink cartidge replacement

Followed prompts on screen to change printhead ink cartidge (k) black & yellow. It will not recognise that I have change the cartidge and is still asking me to change it. Tried switching off and starting again, but the same happens every time. Can you help please.

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Ok, you may have blocked printheads. Remove cartridges, using a cleaning solution and cotton buds (q-tips) thoroughly clean all residue. Now replace cartridges and try again.

Posted on Aug 16, 2007

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The printer is not recognising cyan ink cartidge CLI-BC even though it is full


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Did you remember to take the tape off the top of the cartridge? If so, run a few cleanings and do a nozzle check. If there is still no cyan, your print heads may be clogged

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Printer Designjet 110 Plus not working


Ink supplies Description HP part number 11 Black Printhead C4810A 11 Cyan Printhead C4811A 11 Magenta Printhead C4812A 11 Yellow Printhead C4813A 10 Black Ink Cartridge C4844A 82 Cyan Ink Cartridge C4911A 82 Magenta Ink Cartridge C4912A 82 Yellow Ink Cartridge C4913A
alot of printers now if the ink in the cartidge is the first ones placed in the system from the box are those that are only half full if not less depending on the maker but I know HP only fills their cartidges only just under the half way make but the printer sees it as a new cartrige because of the chips programming.

Have you tryed to turn the power of and let is sit for about 5 mins and turn it back on with the same result? (ushally a yellow error light is on)

Also if you can find the settings to only print in black and white on the printers properties that might also work as well for a temp fix.

But ushally once one ink runs out it likes to do that you where correct with the "is it because of the finished color cartidges.." either that or the carts all have finally expired.

Nice printer by the way.

But your best way to do it would be to replace the color carts and if not reasonable to do now there is also a way to reset the color carts so that the printer thinks that there is ink in them as well.

hope this helps you a bit if you need more info please let us know.

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