Pagewidth inkjet printhead assembly with longitudinally extending sets of nozzles
First Claim
1. A pagewidth inkjet printhead assembly which comprises:
- an elongate substrate that defines a plurality of ink inlet channels;
a drive and control circuitry layer positioned on the substrate;
a plurality of nozzle chamber structures arranged on the substrate to define a number of longitudinally extending sets of nozzle chamber structures, each set having a series of adjacent pairs of nozzle chamber structures, each nozzle chamber structure defining a nozzle chamber in fluid communication with a respective ink inlet channel and an ink ejection port in fluid communication with the nozzle chamber;
a plurality of elongate micro-electromechanical actuators fast at one end to the substrate to receive electrical drive signals from the drive and control circuitry layer; and
a plurality of ink ejecting members positioned in respective nozzle chambers and fast with respective opposite ends of the micro-electromechanical actuators to be displaced relative to the substrate on receipt of a drive signal by the associated actuator, thereby ejecting ink from the ink ejection port;
wherein the nozzle chamber structures and the associated micro-electromechanical actuators are configured so that a region between sets contains consecutively overlapping actuators.
2 Assignments
0 Petitions
Accused Products
Abstract
A pagewidth inkjet printhead assembly includes an elongate substrate that defines a plurality of ink inlet channels. A drive and control circuitry layer is positioned on the substrate. A plurality of nozzle chamber structures is arranged on the substrate to define a number of longitudinally extending sets of nozzle chamber structures. Each set has a series of adjacent pairs of nozzle chamber structures. Each nozzle chamber structure defines a nozzle chamber in fluid communication with a respective ink inlet channel and an ink ejection port in fluid communication with the nozzle chamber. A plurality of elongate micro-electromechanical actuators is fast at one end to the substrate to receive electrical drive signals from the drive and control circuitry layer. A plurality of ink ejecting members is positioned in respective nozzle chambers. Each ink ejecting member is fast with a respective opposite end of each micro-electromechanical actuators to be displaced relative to the substrate on receipt of a drive signal by the associated actuator, thereby ejecting ink from the ink ejection port.
-
Citations
6 Claims
-
1. A pagewidth inkjet printhead assembly which comprises:
-
an elongate substrate that defines a plurality of ink inlet channels; a drive and control circuitry layer positioned on the substrate; a plurality of nozzle chamber structures arranged on the substrate to define a number of longitudinally extending sets of nozzle chamber structures, each set having a series of adjacent pairs of nozzle chamber structures, each nozzle chamber structure defining a nozzle chamber in fluid communication with a respective ink inlet channel and an ink ejection port in fluid communication with the nozzle chamber; a plurality of elongate micro-electromechanical actuators fast at one end to the substrate to receive electrical drive signals from the drive and control circuitry layer; and a plurality of ink ejecting members positioned in respective nozzle chambers and fast with respective opposite ends of the micro-electromechanical actuators to be displaced relative to the substrate on receipt of a drive signal by the associated actuator, thereby ejecting ink from the ink ejection port; wherein the nozzle chamber structures and the associated micro-electromechanical actuators are configured so that a region between sets contains consecutively overlapping actuators. - View Dependent Claims (2, 3, 4, 5, 6)
-
Specification