Ink jet printer

B - Operations – Transporting – 41 – J

Patent

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Details

B41J 2/045 (2006.01)

Patent

CA 2308035

The invention relates to a droplet deposition apparatus comprising an actuator (100) having a plurality of spaced piezoelectric walls defining channels, said walls having opposed sides; said opposed sides being provided with electrodes being adapted to receive electric signals to deform said walls to cause liquid in said channels to be ejected therefrom; said signals having wave forms; and a control unit (130) for defining the wave forms of said electric signals; wherein the control unit comprises means (500, 514) for providing an individually adapted signal slope of the wave form to selected electrodes (E) so as to compensate for individual channel deviations.

L'invention porte sur un dispositif de dépôt de gouttelettes comportant: un actionneur (100) d'éjection de gouttelettes d'encre comportant une série de parois piézo-électriques espacées délimitant des canaux, lesdites parois présentant des côtés opposés munis d'électrodes recevant des signaux électriques, qui en déformant lesdites parois, provoquent l'éjection du liquide présent dans lesdits canaux, lesdits signaux présentant des formes d'ondes; et sur une unité (130) de commande définissant les formes d'ondes desdits signaux électriques, ladite unité de commande comportant des moyens (500, 514) de production de signaux à pente de forme d'onde adaptés individuellement transmis à des électrodes sélectionnées (E) pour compenser les déviations des différents canaux.

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