Patent ID: 6481833
Filing Date: 2002-11-19
Classification: B41J

Abstract:
A drive method for an electrostatic inkjet head having at least first and second ink pressure chambers separated by a partitioning wall, first and second ink nozzles communicating respectively with the first and second ink pressure chambers, first and second diaphragms that are flexibly displaceable and each forming part of a wall of the first and second ink pressure chambers, respectively, and first and second individual electrodes opposing said first and second diaphragms, respectively, comprising:applying a drive voltage between said first diaphragm and said first individual electrode to flexibly displace said first diaphragm toward said first individual electrode; a second diaphragm attracting step of applying a drive voltage between said second diaphragm and said second individual electrode to flexibly displace said second diaphragm toward said second individual electrode and maintain contact between said second diaphragm and second individual electrode; and a discharging step of flexibly displacing said first diaphragm to discharge an ink drop from the first ink nozzle.