Energy balanced ink jet printhead

B - Operations – Transporting – 41 – J

Patent

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Details

B41J 2/14 (2006.01) B41J 2/155 (2006.01)

Patent

CA 2415689

An ink jet printhead (11, 12, 13) having FET drive circuits (85) that are configured to compensate for power trace (86, 181) parasitic resistances. The FEt drive circuits have drain regions of selected length in order to set an on- resistance of the FET drive circuits. In another embodiment the size of the FET circuits is selected.

La présente invention concerne une tête d'impression à jet d'encre (11, 12, 13) possédant des circuits (85) d'attaque FET qui sont agencés de façon à compenser les résistances parasites de tracé électrique (86, 18). Ces circuits d'attaque FET possèdent des régions drain de longueur sélectionnées de façon à placer une résistance à l'état passant sur ces circuits d'attaque FET. Dans un autre mode de réalisation de l'invention, la taille des circuits FET est sélectionnée.

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