Patent ID: 6045216
Filing Date: 2000-04-04
Classification: B41J

Abstract:
A print head comprising:a holder having a front surface;at least one head chip protruding from the front surface of the holder, the at least one head chip each having a nozzle surface formed with nozzles for ejecting ink;a cover body covering the front surface of the holder and a protruding portion of the at least one head chip and having at least one exposure opening for exposing the nozzle surface;a first seal between a rear edge of the cover body and the holder; anda second seal between a front edge of the cover body and the at least one head chip;wherein the first seal between the rear edge of the cover body and the holder and the second seal between the front edge of the cover body and the at least one head chip is maintained by one of a sealing agent and a welded area,the first seal between the rear edge of the cover body and the holder and the second seal between the front edge of the cover body and the at least one head chip forms a sealed area within the holder and the cover body, andthe at least one head chip includes a contact portion connected to a signal line for transmitting an electric signal to the at least one head chip, the contact portion being provided within the sealed area.