Patent ID: 6024436
Filing Date: 2000-02-15
Classification: B41J

Abstract:
A laminated ink jet recording head having a first nozzle array and a second nozzle array corresponding to a first pressure generating chamber array, said ink jet recording head comprising:(A) an actuator unit comprising:a pressure generating chamber forming board having pressure generating chambers, forming said first pressure generating chamber array, for pressurizing ink; andpressure generating means arranged on said pressure generating chamber forming board, said pressure generating means pressurizing said pressure generating chambers to jet the ink in said pressure generating chambers; and(B) a passage unit bonded to said actuator unit, comprising:an ink supply port forming board having ink supply ports for supplying the ink to said pressure generating chambers of said actuator unit; anda nozzle plate having nozzle openings corresponding to said first nozzle array and said second nozzle array, for jetting out the ink from said pressure generating chambers;wherein said ink supply ports, said pressure generating chambers and said nozzle openings communicate via a plurality of sets of communicating holes provided in said actuator unit and said passage unit;wherein said first pressure generating chamber array extends generally in a lengthwise direction; andwherein said nozzle openings corresponding to said first nozzle array and said nozzle openings corresponding to said second nozzle array extend generally in the lengthwise direction of said first pressure generating chamber array, and are staggered with respect to each other in a widthwise direction of said first pressure generating chamber array to form a predetermined pattern.