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US 10,369,802 B2Granted
Ink filter with passive de-aeration
AssigneeMemjet Technology Limited
InventorPatrick McAuliffe
Life of this patent
Estimating the term…
Abstract
An ink filter for an ink delivery system. The ink filter includes: a filter chamber having a filter inlet port, a filter outlet port and a vent port, the vent port being positioned in a roof of the filter chamber; a filter material positioned between the filter inlet port and the filter outlet port; and a closed vent chamber connected to the vent port. The vent chamber has wall exposed to atmosphere formed of an air-permeable polymer.
Claims20
An ink filter for an ink delivery system comprising:
- a filter chamber having a filter inlet port, a filter outlet port and a vent port, the vent port being positioned in a roof of the filter chamber;
- a filter material positioned between the filter inlet port and the filter outlet port;
- and
- a closed vent chamber connected to the vent port,
- wherein the vent chamber has at least one wall exposed to atmosphere comprised of an air-permeable polymer.
2 more elements
An inkjet printer comprising:
- an ink tank containing ink having a predetermined ink level;
- an ink filter positioned below the predetermined ink level;
- and
- an inkjet printhead positioned above the predetermined ink level,
- wherein the ink filter comprises:
- a filter chamber having a filter inlet port for receiving ink from the ink tank, a filter outlet port for delivering ink to the printhead and a vent port, the vent port being positioned in a roof of the filter chamber;
- a filter material positioned between the filter inlet port and the filter outlet port;
- and
- a closed vent chamber connected to the vent port,
- and wherein the vent chamber has at least one wall exposed to atmosphere comprised of an air-permeable polymer.
7 more elements
Dependencies are inferred from the claim text.