Patent ID: 6382782
Filing Date: 2002-05-07
Classification: B41J

Abstract:
A continuous ink jet print head having a plurality of nozzles, the print head comprising:a silicon substrate including integrated circuits formed therein for controlling operation of the print head, the silicon substrate having a primary ink channel formed therein; an insulating layer or layers overlying the silicon substrate, the insulating layer or layers having a secondary channel associated with each nozzle and formed therein and communicating with the primary ink channel; a bore for each nozzle and formed in a layer or layers overlying the insulating layer or layers and communicating with the secondary channel; and wherein the insulating layer or layers includes a blocking structure between the primary ink channel and the secondary ink channel, an access being provided between the primary ink channel and the secondary ink channel to permit ink from the primary ink channel to flow about the blocking structure and to enter the secondary ink channel at a location offset from the bore to provide lateral flow components to the liquid ink entering the bore opening.