Printhead with columns extending across chamber inlet
First Claim
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1. A printhead for an inkjet printer, the printhead comprising:
- an array of ink ejection devices, each ink ejection device having a chamber for holding a quantity of ink, the chamber being partially defined by at least one sidewall, an inlet in fluid communication with the chamber, an actuator disposed in each of the chambers respectively, a nozzle in fluid communication with each of the chambers respectively, the nozzle is formed in a nozzle plate on the printhead exterior;
wherein,the inlet defines a flow path into the chamber and has a series of columns extending across the flow path.
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Abstract
An inkjet printhead for a printer that prints via an array of ink ejection devices. Each ink ejection device has a chamber for holding a quantity of ink. The chamber is partially defined by at least one sidewall and has an inlet in fluid communication with the chamber. The inlet defines a flow path into the chamber and has a series of columns extending across the flow path. The series of chambers form a barrier structure that creates a flow constriction that traps contaminants in the ink flow.
28 Citations
16 Claims
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1. A printhead for an inkjet printer, the printhead comprising:
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an array of ink ejection devices, each ink ejection device having a chamber for holding a quantity of ink, the chamber being partially defined by at least one sidewall, an inlet in fluid communication with the chamber, an actuator disposed in each of the chambers respectively, a nozzle in fluid communication with each of the chambers respectively, the nozzle is formed in a nozzle plate on the printhead exterior;
wherein,the inlet defines a flow path into the chamber and has a series of columns extending across the flow path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification