Operation of pulsed droplet deposition apparatus

B - Operations – Transporting – 41 – J

Patent

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B41J 2/045 (2006.01)

Patent

CA 2238424

An inkjet printhead comprises an array of parallel channels separated one from the next by side walls transversely displaceable in response to an actuating signal. Pattern dependent crosstalk is avoided by applying to a channel selected for actuation a signal held at a given non-zero level for a period of length greater than that the length of the period at which the velocity of droplets ejected from said channel is at its maximum and at which the velocity of a droplet ejected from said selected channel is substantially independent of whether or not channels in the vicinity of said selected channel are similarly actuated to effect droplet ejection simultaneously with droplet ejection from the selected channel.

Une tête d'impression à jet d'encre comprend un ensemble de canaux parallèles, séparés l'un de l'autre par des cloisons latérales qui peuvent être déplacées transversalement en réaction à un signal d'actionnement. On évite la diaphonie fonction du motif en appliquant, à un canal sélectionné pour être actionné, un signal maintenu à un niveau non égal à zéro pendant un laps de temps plus long que la période pendant laquelle la vitesse des gouttelettes éjectées de ce canal est à son maximum et pendant laquelle la vitesse d'une gouttelette éjectée de ce canal sélectionné est sensiblement indépendante du fait que des canaux proches du canal en question soient ou non actionnés de façon similaire pour effectuer l'éjection de gouttelettes en même temps que le canal sélectionné.

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