Integrated black and colored ink printheads

Details Integrated black and colored ink printheads Integrated black and colored ink printheads

B - Operations, Transporting

41

J

B41J 2/145 (2006.01)

Patent

CA 2572094

An improved ink jet printhead and method therefor. The printhead includes a single semiconductor substrate with ink ejection devices and a nozzle plate adjacent to the semiconductor substrate, the nozzle plate with first ink ejection nozzles for ejecting first ink drops having a first volume and second ink ejection nozzles for ejecting second ink drops having a second volume different from the first volume, wherein the first volume is defined by first flow features of the printhead having a first thickness and the second volume is defined by second flow features having a second thickness that is different from the first thickness.

L'invention concerne une tête d'impression à jet d'encre améliorée et un procédé associé. La tête d'impression comporte un substrat semi-conducteur simple à dispositifs d'éjection d'encre et une plaque de buses jouxtant le substrat semi-conducteur. La plaque à buses est dotée de premières buses d'éjection d'encre qui éjectent les premières gouttes d'encre ayant un premier volume et de secondes buses d'éjection d'encre qui éjectent de secondes gouttes d'encre ayant un second volume différent du premier. Le premier volume est défini par de premières caractéristiques d'écoulement de la tête d'impression présentant une première épaisseur et le second volume par de secondes caractéristiques d'écoulement présentant une seconde épaisseur différente de la première.

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