Ink jet array with isolated fluid rectifier layers

摘要

A coincidence ink jet array system is disclosed wherein each ink jet has two inlet passages communicated to an outlet orifice. An ink droplet is expressed from the orifice only when pressure pulses applied to the inlet passages coincide at the orifice. Two main fluid supply passages are provided, one of which traverses across the jets at the upper portion of a housing and the other which traverses across the jets at the lower portion of the housing. A plurality of separate fluid rectifier passages interconnect the supply passages with a respective one of the jets to provide a fluid layer at a location between its respective outlet orifice and its respective inlet passages. This connection of the jets with separate fluid rectifier passages isolates each jet from another to either prevent or substantially limit "cross-coupling" (pressure communication) between the jets.