The fixed head design sees the printer fitted with it's own long life inbuilt print head which is designed to last the life of the printer and never need to be replaced or repaired. Known as a "gaither head" it follows the philosophy that a print head can last longer than the life of the ink in a cartridge and so why should it be replaced with it and bringing it's cost to replacement ink cartridges. This philosophy drives the price of printer units up but printer cartridges down. Therefore the purchaser of a printer should evaluate the balancing act which should be resolved based on the volume of printing they will require from their printer and the expected life of the printer.