Unfortunately, the greatest impact on the durability of the heads are you as a user . See the most common errors of the operator: the lack of daily maintenance, failure to rinse the cleaning fluid station, bad working conditions, low or high temperature, low humidity. You can not leave the plotter printing without supervision in the the case of jams or lifting the head media hits on the surface of the material causing irreversible damage. The use of low-quality inks, lack of maintenance, failure to Exchange filters, cleaning stations and pumps, leaving plotter for several weeks without running, dust and other dirt deposited on the surface of the head.