An ink ejecting apparatus is composed of a piezoelectric ceramics plate, a cover plate, and a nozzle plate. The piezoelectric ceramics plate is provided with a plurality of grooves. The cover plate is composed of a front plate and a rear plate. The rear plate is provided with a plurality of ink inlet...http://www.google.com/patents/US5625393?utm_source=gb-gplus-sharePatent US5625393 - Ink ejecting apparatus with ejecting chambers and non ejecting chambers
