Drop on demand ink jet printing apparatus

Details Drop on demand ink jet printing apparatus Drop on demand ink jet printing apparatus

B - Operations, Transporting

41

J

B41J 2/045 (2006.01) B41J 2/14 (2006.01)

Patent

CA 2342367

Drop-on-demand ink jet printing apparatus comprises a nozzle (19) on a nozzle axis; an ink chamber (22; 122) communicating with the nozzle; a piezoelectric actuating structure (31; 131), said structure extending around the nozzle axis and extending in the direction of the nozzle axis; an actuating surface facing the nozzle, said structure being actuable to move said actuating surface in the direction of the nozzle axis to effect droplet ejection through the nozzle; and electrodes (24,25;124,125) for applying an actuating electric field to the actuating structure.

Imprimante à jet d'encre goutte à la demande comportant une buse (19) placée sur un axe de buse ; une chambre d'encre (22, 122) communiquant avec la buse ; une structure de commande piézolélectrique (31), 131) qui entoure l'axe de buse et s'étend dans la direction dudit axe ; une surface de commande disposée face à la buse, ladite structure pouvant être commandée pour déplacer ladite surface dans la direction de l'axe de la buse aux fins de l'éjection de gouttelettes par la buse, ainsi que des électrodes (24, 25, 124, 125) permettant d'appliquer un champ électrique à la structure de commande.

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