Patent ID: 6447105
Filing Date: 2002-09-10
Classification: B41J

Abstract:
An ink-jet system comprising:an ink channel between an ink reservoir and a nozzle, the ink channel being attached to the ink reservoir and the nozzle; and an electromechanical transducer which comprises an expansible member being arranged adjacent and operatively connected to the ink channel for abruptly reducing volume of the ink channel to thereby eject an ink droplet through said nozzle, the ink channel having a first portion and a second portion with each portion having a depth as measured in a depth direction, the expansible member exerts a force on ink in the ink channel in the depth direction, the second portion of the ink channel being between the expansible member and the nozzle and the first portion of the ink channel being adjacent to the expansible member, the depth of the second portion being larger than the depth of the first portion and being larger than a height of the nozzle.