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US 9,315,037 B2Granted
Ink aerosol filtration
AssigneeHewlett-Packard Development Company, L.P.
InventorsXavier Gasso Puchal, Francesc Tarrida Tirado, Xavier Gros Gras
Life of this patent
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Abstract
An ink aerosol filtration system includes an inlet, a filtration chamber communicated with the inlet and including at least one filter member, and an airflow source communicated with the filtration chamber to generate flow into the inlet, through the filtration chamber and through the at least one filter member, wherein the airflow source is controlled to maintain substantially constant pressure at the inlet.
Claims14
An ink aerosol filtration system, comprising:
- an inlet;
- a filtration chamber communicated with the inlet and including at least one filter member;
- and
- an airflow source communicated with the filtration chamber to generate flow into the inlet, through the filtration chamber and through the at least one filter member,
- wherein the airflow source is controlled to maintain substantially constant pressure at the inlet,
- wherein the at least one filter member comprises a first filter member adjacent the inlet, and a second filter member between an inlet side and an outlet side of the filtration chamber.
3 more elements
A printing system, comprising:
- a printhead to eject ink drops through a print zone toward a print media;
- and
- a filtration system to filter ink aerosol generated with the ejected ink drops, the filtration system including:
- a filtration chamber communicated with an inlet open to the print zone,
- a nozzle assembly at the inlet, the nozzle assembly including:
- a nozzle body communicated with the filtration chamber, a nozzle opening formed in the nozzle body, a nozzle passage communicated with the nozzle opening and extended through the nozzle body, and a collection trough formed in the nozzle body,
- at least one filter member within the filtration chamber, and
- an airflow source communicated with the filtration chamber to draw the ink aerosol into the inlet, through the filtration chamber and through the at least one filter member,
- wherein the airflow source is controlled to maintain substantially constant pressure at the inlet.
6 more elements
A method of printing, comprising:
- ejecting ink drops from a printhead toward a print media through a print zone, including forming ink aerosol in the print zone with the ejecting of the ink drops;
- drawing the ink aerosol from the print zone through an inlet to a filtration chamber;
- filtering the ink aerosol in the filtration chamber;
- and
- during the drawing the ink aerosol and the filtering the ink aerosol, maintaining substantially constant pressure at the inlet,
- wherein maintaining the substantially constant pressure at the inlet includes monitoring a pressure at an inlet side of the filtration chamber and controlling an airflow source communicated with the filtration chamber based on the pressure at the inlet side of the filtration chamber.
3 more elements
Dependencies are inferred from the claim text.