Patent ID: 7168774
Filing Date: 2007-01-30
Classification: B41J

Abstract:
1. A liquid jetting device comprising: a liquid chamber in which a liquid can be contained; an energy generation element which can impart energy to liquid in said liquid chamber; and plurality of nozzle heads, each having a plurality of nozzles via which liquid in said liquid chamber is emitted as droplets under the influence of said energy generation element, wherein, each head comprises an array of a plurality of nozzles, a plurality of said heads are arrayed in a direction orthogonal to the array direction of said nozzles to constitute a head array, a droplet emitted out from said nozzles in said head array is deposited onto a recording medium to form a dot, and said energy generation element controls the energy imparted to said liquid such that (a) the direction in which a droplet is emitted from a nozzle is deflected (b) an error in the deposition position of said dot due to an error in the position of a head in said head array is corrected, and (c) errors in the deposition position of dots are corrected so that the dot formed by the droplet emitted out from the n-th nozzle of one head in said head array and the dot formed by the droplet emitted out form the n-th nozzle of another head in said head array are superposed on each other.