Global Patent Index - EP 1319511 A1

EP 1319511 A1 2003-06-18 - Liquid jetting apparatus and method for driving the same

Title (en)

Liquid jetting apparatus and method for driving the same

Title (de)

Flüssigkeitsstrahlapparat und Ansteuerverfahren dafür

Title (fr)

Appareil de jets de liquide et procédé de son commandement

Publication

EP 1319511 A1 (EN)

Application

EP 02258555 A

Priority

  • JP 2001376760 A
  • JP 2001384068 A
  • JP 2001389209 A
  • JP 2002357529 A

Abstract (en)

A liquid jetting head is provided with a nozzle orifice, a pressure chamber (27) communicated with the nozzle orifice (32), and a piezoelectric element which is deformable to cause pressure fluctuation to liquid contained in the pressure chamber. A drive signal generator (9) simultaneously generates a plurality of drive signals, each provided with waveform elements including at least one drive pulse in every unit jetting cycle. The drive pulse deforms the piezoelectric element (21) to cause such pressure fluctuation as to eject a liquid droplet from the nozzle orifice (32). A switcher selectively supplies at least one of the waveform elements included in one of the drive signals to the piezoelectric element. A switch controller (45,46,47,48) controls a selective supply operation of the switcher in accordance with amount data which indicates an amount of the liquid droplet to be ejected. A time period during which a first drive pulse is generated in one of the drive signals overlaps at least partly with a time period of a second drive pulse generated in another one of the drive signals. <IMAGE>

IPC 1-7 (main, further and additional classification)

B41J 2/045; B41J 2/21

IPC 8 full level (invention and additional information)

B41J 2/045 (2006.01); B41J 2/21 (2006.01)

CPC (invention and additional information)

B41J 2/04578 (2013.01); B41J 2/04581 (2013.01); B41J 2/04588 (2013.01); B41J 2/04593 (2013.01); B41J 2/04596 (2013.01); B41J 2/2128 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR

EPO simple patent family

EP 1319511 A1 20030618; EP 1319511 B1 20060830; AT 337915 T 20060915; DE 60214321 D1 20061012; DE 60214321 T2 20061228

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