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US 8,556,374 B2Granted
Printhead air barrier
AssigneeHewlett-Packard Development Company, L.P.
InventorsXavier Gros Gras, Xavier Gasso Puchal, Francesc Ros Cerro
Life of this patent
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Abstract
In one example, an air barrier system for a printhead assembly includes a source of pressurized air and multiple channels operatively connected to the air source to channel multiple streams of air between two printheads in the printhead assembly.
Claims14
An air barrier system for a printhead assembly having multiple printheads for dispensing liquid on to a substrate positioned to receive liquid dispensed from the printheads, the air barrier system comprising:
- a source of pressurized air;
- and
- multiple channels interposed between two adjacent printheads and extending over a substrate when the substrate is positioned to receive liquid dispensed from the printheads, the channels operatively connected to the air source to channel multiple streams of air between the two printheads.
An inkjet printhead assembly, comprising:
- a movable carriage;
- a first printhead on the carriage for dispensing a first liquid;
- a second printhead on the carriage for dispensing a second liquid;
- and
- a plurality of channels on the carriage and configured to channel air between the two printheads on the carriage.
2 more elements
A printhead assembly, comprising:
- a first printhead for dispensing a first liquid;
- a second printhead next to the first printhead for dispensing a second liquid;
- multiple channels to form a barrier of moving air between the first printhead and the second printhead;
- and one of
- the printheads and the channels on a movable carriage with the channels extending between the printheads in a direction substantially perpendicular to a direction of carriage movement, or
- the first printhead on an elongated first print bar, the second printhead on an elongated second print bar, and the channels extending lengthwise between the first print bar and the second print bar.
3 more elements
Dependencies are inferred from the claim text.