公开(公告)号：JPH1086377A

公开(公告)日：1998-04-07

申请号：JP17531897

申请日：1997-06-16

Applicant: LEXMARK INT INC

Inventor： KAUFMAN MICAH A ,  KELTY JANINE M ,  POWERS JAMES H ,  RAULINAITIS MICHAEL ,  STEWARD LAWRENCE R

IPC: B41J2/05 ,  B41J2/14 ,  B41J2/16 ,  B41J2/175

Abstract: PROBLEM TO BE SOLVED: To provide an ink jet printing head having filter function constitution not unjustly suppressing the ink flow passing through a printing head. SOLUTION: An ink jet printing head 10 has an ink receiving via and is equipped with a chip layer 16 having at least one actuator 18. A barrier layer is arranged adjacently to the chip layer 16 to form at least one throat 22 having width and a vertical section area. The barrier layer further forms at least one bubble chamber 20 and each throat 22 receives ink from the via to supply the same to each bubble chamber 20. A nozzle layer 14 is arranged adjacently to the barrier layer and, when ink is excited by the related actuator 18 thereof, at least one nozzle 12 for discharging ink from each bubble chamber is formed.

公开(公告)号：AU715288B2

公开(公告)日：2000-01-20

申请号：AU2495497

申请日：1997-06-17

Applicant: LEXMARK INT INC

Inventor： KAUFMAN MICAH A ,  KELTY JANINE M ,  POWERS JAMES H ,  RAULINAITIS MICHAEL ,  STEWARD LAWRENCE R

IPC: B41J2/05 ,  B41J2/14 ,  B41J2/16 ,  B41J2/175

Abstract: An ink jet printhead includes a chip layer (16) having a via (30) for receiving ink, and having at least one actuator (18). A barrier layer (28) is disposed adjacent the chip layer, and forms at least one throat (22) which has a width and a cross-sectional area. The barrier layer also forms at least one bubble chamber (20), with each throat adapted to receive ink from the via and provide it to the respective bubble chamber. A nozzle layer (14) is disposed adjacent the barrier layer, opposite the chip layer, and forms at least one nozzle for ejecting ink from the respective bubble chamber when the ink is energized by the associated actuator. At least one post (24) is disposed proximate the throat, and extends part way between the chip layer and the nozzle layer. The post forms one or more gates through which the ink must pass from the via to the at least one throat.