Patent ID: 6394589
Filing Date: 2002-05-28
Classification: B41J

Abstract:
An ink jet printhead comprising:a reservoir storing a quantity of printing ink; at least one ink manifold defining an ink supply volume in communication with said reservoir for holding a supply of ink received from said reservoir; and a plurality of individually controlled ink jet delivery channels, each of said channels having an ink drop ejection transducer and an orifice to eject successive ink drops on demand in response to pressure pulses produced by said transducer, and each of said channels being in communication with said ink supply volume for receiving ink from said ink supply volume, wherein said manifold includes a thin, flexible wall bounding said ink supply volume to provide said ink supply volume a large acoustic compliance to minimize propagation of pressure disturbances in said ink supply volume and acoustic signal crosstalk between said channels, and said wall has a thickness of the order of not more than 12 &mgr;m.