Reliable Operation of Multinozzle Printhead in a Start/ Stop Mode
Original Publication Date: 1982-Aug-01
Included in the Prior Art Database: 2005-Feb-09
This article describes a complete start/ stop system suitable for use with a multinozzle ink jet printer. The system is designed so that the containment of ink streams during start-up is accomplished by moving head components away from any possible spray or stream misdirection. The streams are collected during start-up by an auxiliary gutter. Dependence on ink properties is reduced by using a cap to cover the nozzle during shut-down. The cap will prevent ink crusting over the nozzles, prevent air from getting into the head. and, in addition, will provide potential clog recovery capability. The moving of tunnel components provides more flexibility in selecting a cap design. The system also includes a set of drop sensors. These sensors are mounted on the moving elements and measure drop flight time and directionality.