Print head nozzles get blocked over time, mostly by microscopic dirt particles or dried ink. Nozzles are kept clean by servicing, including cleaning the top with a small rubberized wiper, ejecting ink through nozzles to purge particles and avoid drying, and pumping with ink to clean the printing head. Maintain the printer willing to print in a choice of shade or black colored, these solution routines typically eat some ink out of every cartridge, whether or not just black or color can be used within the document being printed.
Small bubbles of atmosphere kind in the ink eventually and certainly will impede the flow of ink in long-life printing mind printers (IIC). In a few IIC printers, environment bubbles may be caused by an ink cartridge change. Air bubbles may be removed by pumping all of them from the print mind. When removing these air bubbles, some ink can also be eliminated.On IIC systems, multiple colors might use exactly the same print head. Whenever one color cartridge is altered, some ink can be eaten from the other color ink cartridges using the exact same print head.