Patent ID: 6109715
Filing Date: 2000-08-29
Classification: B41J

Abstract:
An inkjet printer comprising:a printing head adapted to discharge ink drops within a first size range and a second size range, such first size range being different from said second size range, including:at least one ink channel for storing ink;at least one nozzle in fluid communication with said at least one ink channel; andat least one piezoelectric element corresponding to said at least one ink channel to effect a discharge of ink through said is nozzle; anda controller to control said printing head to effect a discharge of ink drops in said first size range and said second size range, such control including (i) application of a primary voltage to said at least one piezoelectric element to discharge an ink drop in the first size range and application of a secondary voltage to said at least one piezoelectric element to prevent a post-discharge vibration in said at least one ink channel as a consequence of an applied primary voltage and (ii) application of a primary voltage to said at least one piezoelectric element to discharge an ink drop in the second size range and preventing application of a corresponding secondary voltage,wherein an ink drop of said first size range has a greater recorded diameter than an ink drop of said second size range.