Thermal ink jet printhead with symmetric bubble formation

Details Thermal ink jet printhead with symmetric bubble formation Thermal ink jet printhead with symmetric bubble formation

B - Operations, Transporting

41

J

B41J 2/05 (2006.01) B41J 2/14 (2006.01) B41J 2/16 (2006.01)

Patent

CA 2506733

An ink jet printhead (1) which a plurality of nozzles (3) and one or more heater elements (10) corresponding to each nozzle. Each heater is configured to heat a bubble forming liquid in the printhead to a temperature above its boiling. Each heater element has two opposite sides and is suspended within the chamber (7) below the nozzle. The gas bubble is formed at both sides of the heater.

L'invention concerne une tête d'impression à jet d'encre (1) présentant une pluralité de buses (3) et un ou plusieurs éléments chauffants (10) correspondant à chaque buse. Chaque élément chauffant est conçu pour chauffer un liquide de formation de bulle contenu dans la tête d'impression à une température supérieure à son point d'ébullition. Chaque élément chauffant présente deux côtés opposés et est suspendu dans la chambre (7) sous la buse. La bulle de gaz est formée des deux côtés de l'élément chauffant.

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