Patent ID: 11938726
Assignee: CANON KABUSHIKI KAISHA
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. An inkjet printer comprising a droplet jetting device comprising
a membrane layer defining a pressure chamber that is in fluid communication with a nozzle, the membrane layer carrying, on a membrane that covers the pressure chamber, an actuator for generating pressure waves in a liquid in the pressure chamber;
a distribution layer bonded to the membrane layer on the a side of the membrane and defining a supply line for supplying the liquid to the pressure chamber, the supply line being connected to the pressure chamber via a restrictor passage extending through the distribution layer in the thickness direction of that layer, and via a window formed in the membrane, wherein the restrictor passage has a uniform cross-section, and the membrane window is delimited by a contour that is inwardly offset from the contour of the restrictor passage on the entire periphery of the restrictor passage, wherein the ink supply line comprises a trench formed in the surface of the distribution layer, and the restrictor passage extends from the bottom of the trench.