Patent ID: 6758544
Filing Date: 2004-07-06
Classification: B41J

Abstract:
An ink jet printer, comprising:a control unit, which converts externally provided printing data into jetting data associated with a size of dot to be printed; a drive signal generator, which generates a drive signal including a plurality of drive pulses; a printing head, which includes: a pressure chamber communicated with a nozzle; a pressure generating element, which varies pressure inside of the pressure chamber when at least one of the drive pulses is applied; a decoder, which decodes the jetting data into pulse select information in accordance with a predetermined conversion relationship; and a switcher, which selects at least one of the drive pulses to be applied to the pressure generating element in accordance with the pulse select information; pattern data, which defines the conversion relationship; and a common signal line, which transfers the jetting data and the pattern data from the control unit to the printing head.