|If there is plenty of ink in all the cartridges it can mean only one thing -- the printhead (that's the sliding cradle which holds the cartridges) is blocked up with dried-up ink owing to the coloured inks not being used frequently enough. |
You have to print something which uses a small amount of every colour approximately every 3 or 4 days to avoid any of the inks drying out in the printhead.
Try using the nozzle-cleaning function in the printer driver. You may have to run it several times. If that doesn't clear the blockages, remove all the carts and put a few drops of alcohol-based solvent in each hole in the printhead, under where the carts sit. Leave it overnight to soak through the blockage.
Alternatively, remove the printhead and submerge it in warm, soapy water. Agitate it well & leave to soak. Then rinse well in clean water and leave it to dry thoroughly.