Patent ID: 6817704
Filing Date: 2004-11-16
Classification: B41J

Abstract:
A liquid ejecting device having a head including a liquid ejecting portion or a plurality of liquid ejecting portions arranged in parallel in a predetermined direction, said liquid ejecting portion or each of the liquid ejecting portions comprising:a liquid cell for containing liquid; at least one energy generating element provided in said liquid cell which produces a bubble in response to the supply of energy; and a nozzle for ejecting the liquid in said liquid cell by using the bubble produced by said at least one energy generating element, wherein: in said liquid cell, the energy generating elements are connected in series to one another and are arranged in parallel in said predetermined direction; and said liquid ejecting device comprises: main operation-control means which, by supplying equal amounts of currents to the connected energy generating elements in said liquid cell, performs control so that the liquid is ejected from said nozzle; and sub operation-control means provided for each of the liquid ejecting portions which includes at least one current-mirror circuit connected to a junction of the energy generating elements, and in which, by using the current-mirror circuit to allow a current to flow into or to flow from the junction of the energy generating elements, the amount of a current supplied to each of the energy generating elements is controlled and the direction of the liquid ejected from said nozzle is controlled.