Inkjet printer having enclosed actuators
First Claim
1. An inkjet printer that comprisesa printing mechanism that defines a printing path through which media can be fed so that the printing mechanism can carry out a printing operation on the media, the printing mechanism having a printhead assembly that comprises a pagewidth printhead with at least one printhead chip that is operatively positioned with respect to the printing path to span the printing path, the, or each printhead chip comprising a wafer substrate;
- drive circuitry positioned on the wafer substrate; and
a plurality of nozzle arrangements positioned on the wafer substrate, each nozzle arrangement comprising nozzle chamber walls that define a nozzle chamber;
a micro-electromechanical actuator that is mounted on the substrate to be connected to the drive circuitry and operatively positioned with respect to the nozzle chamber so that, on receipt of a signal from the drive circuitry, the actuator can act to eject ink from the nozzle chamber; and
a protective covering shell positioned on the substrate and defining an enclosure in which the actuator is positioned; and
a feed mechanism for feeding media through the printing path.
3 Assignments
0 Petitions
Accused Products
Abstract
An inkjet printer includes a printing mechanism that defines a printing path through which media can be fed so that the printing mechanism can carry out a printing operation on the media. The printing mechanism has a printhead assembly that includes a pagewidth printhead with printhead chips that are operatively positioned with respect to the printing path to span the printing path. Each printhead chip has a wafer substrate. Drive circuitry is positioned on the wafer substrate. A plurality of nozzle arrangements is positioned on the wafer substrate. Each nozzle arrangement has nozzle chamber walls that define a nozzle chamber. A micro-electromechanical actuator is mounted on the substrate to be connected to the drive circuitry and operatively positioned with respect to the nozzle chamber so that, on receipt of a signal from the drive circuitry, the actuator can act to eject ink from the nozzle chamber. A protective covering shell is positioned on the substrate and defines an enclosure in which the actuator is positioned. A feed mechanism for feeding media through the printing path is included.
17 Citations
7 Claims
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1. An inkjet printer that comprises
a printing mechanism that defines a printing path through which media can be fed so that the printing mechanism can carry out a printing operation on the media, the printing mechanism having a printhead assembly that comprises a pagewidth printhead with at least one printhead chip that is operatively positioned with respect to the printing path to span the printing path, the, or each printhead chip comprising a wafer substrate; -
drive circuitry positioned on the wafer substrate; and
a plurality of nozzle arrangements positioned on the wafer substrate, each nozzle arrangement comprising nozzle chamber walls that define a nozzle chamber;
a micro-electromechanical actuator that is mounted on the substrate to be connected to the drive circuitry and operatively positioned with respect to the nozzle chamber so that, on receipt of a signal from the drive circuitry, the actuator can act to eject ink from the nozzle chamber; and
a protective covering shell positioned on the substrate and defining an enclosure in which the actuator is positioned; and
a feed mechanism for feeding media through the printing path. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification