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US 7,922,313 B2Granted
Printhead with pressure-dampening structures
AssigneeSilverbrook Research Pty Ltd
InventorsGregory John McAvoy, Kia Silverbrook
Life of this patent
Estimating the term…
Abstract
An inkjet printhead is provided. The printhead comprises a plurality of nozzle assemblies; a nozzle plate covering the plurality of nozzle assemblies; an ink supply system for supplying ink to the plurality of nozzle assemblies, the ink supply system comprising at least one conduit wall defined by part of the nozzle plate; and at least one pressure-dampening structure positioned in the part of the nozzle plate. The pressure-dampening structures dampen ink pressure fluctuations in the ink supply system.
Claims19
An inkjet printhead comprising:
- a plurality of nozzle assemblies;
- a nozzle plate covering said plurality of nozzle assemblies;
- an ink supply system for supplying ink to said plurality of nozzle assemblies, said ink supply system comprising at least one conduit wall defined by part of said nozzle plate;
- and
- at least one pressure-dampening structure comprising a vent defined in said part of said nozzle plate and a flexible membrane sealingly covering said vent,
- such that ink pressure fluctuations in said ink supply system are dampened by said pressure-dampening structure.
3 more elements
A printhead integrated circuit comprising:
- a substrate;
- a plurality of nozzle assemblies formed on said substrate, each nozzle assembly of the plurality of nozzle assemblies having a nozzle aperture and an actuator for ejection of ink through said nozzle aperture;
- drive circuity electrically connected to each of said actuators;
- a nozzle plate covering said plurality of nozzle assemblies
- an ink supply system for supplying ink to said plurality of nozzle assemblies, said ink supply system comprising at least one conduit wall defined by part of said nozzle plate;
- and
- at least one pressure-dampening structure comprising a vent defined in said part of said nozzle plate and a flexible membrane sealingly covering said vent,
- such that ink pressure fluctuations in said ink supply system are dampened by said pressure-dampening structure.
5 more elements
Dependencies are inferred from the claim text.