Inkjet printer, drive method and drive device for same

An inkjet printer comprising:

• an inkjet head which performs recording by moving in a main scanning direction of a recording medium and letting ink particles;
• a drive waveform generating unit for generating drive waveforms for letting said ink particles;
• and
• a head drive unit for selecting said drive waveforms and driving said inkjet head, in accordance with print data,
• wherein said drive waveform generating unit generates a drive waveform for jetting a plural ink particles having respectively different ink speeds within a unit cycle, said one ink particle is jetted in cycles each corresponding to one of the parts obtained by dividing the unit cycle by an integer,
• wherein said plural ink particles each arrive separately on said recording medium, and
• wherein said drive waveform generating unit generates drive waveforms for dispersing the landing positions of said plurality of injected ink particles, within said unit cycle.

A drive method for an inkjet head which performs recording by moving in a main scanning direction of a recording medium and jetting ink particles, comprising the steps of:

• generating drive waveforms for jetting said ink particles of respectively different ink speeds within said unit cycle, said one ink particle is jetted in cycles each corresponding to one of the parts obtained by dividing the unit cycle by an integer;
• and
• selecting said drive waveform in accordance with print data and driving said inkjet head by said selected drive waveform,
• wherein said plural ink particles each arrive separately on said recording medium.

A drive method for an inkjet head which performs recording by moving in a main scanning direction of a recording medium and jetting ink particles, comprising the steps of:

• generating drive waveforms for jetting said ink particles of respectively different ink speeds within said unit cycle, said one ink particle is jetted in cycles each corresponding to one of the parts obtained by dividing the unit cycle by an integer;
• and
• selecting said drive waveform in accordance with print data and driving said inkjet head by said selected drive waveform,
• wherein said plural ink particles each arrive separately on said recording medium, and
• wherein said step of generating drive waveforms comprises a step of generating drive waveforms for dispersing the landing positions of said plurality of jetted ink particles within said unit cycle.

A drive device for an inkjet head which performs recording by moving in a main scanning direction of a recording medium and jetting ink particles, comprising:

• a drive waveform generating unit for generating drive waveforms for jetting said ink particles;
• and
• a head drive unit for selecting said drive waveforms in accordance with print data and driving said inkjet head by said selected drive waveforms,
• wherein said drive waveform generating unit generates a drive waveform for jetting ink particles having respectively different ink speeds within a unit cycle, said one ink particle is jetted in cycles each corresponding to one of the parts obtained by dividing the unit cycle by an integer, and
• wherein said plural ink particles each arrive separately on said recording medium.

A drive device for an inkjet head which performs recording by moving in a main scanning direction of a recording medium and jetting ink particles, comprising:

• a drive waveform generating unit for generating drive waveforms for jetting said ink particles;
• and
• a head drive unit for selecting said drive waveforms in accordance with print data and driving said inkjet head by said selected drive waveforms,
• wherein said drive waveform generating unit generates a drive waveform for jetting ink particles having respectively different ink speeds within a unit cycle, said one ink particle is jetted in cycles each corresponding to one of the parts obtained by dividing the unit cycle by an integer,
• wherein said plural ink particles each arrive separately on said recording medium, and
• wherein said drive waveform generating unit generates drive waveforms for dispersing the landing positions of said plurality of jetted ink particles, within said unit cycle.