Sensor positioning system
AssigneeHewlett-Packard Development Company, L.P.
InventorsMatt G. Driggers, Vern Elliot Myers, Raymond C. Sherman
Life of this patent
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Abstract
A sensor positioning system including a moveable sensor holder having a following surface, the sensor holder configured to hold an optical sensor at a selected distance from the following surface, a biasing system configured to bias the following surface against a surface of a sheet of print medium, and a drive system configured to move the sensor holder across the sheet of print medium with the following surface biased against and sliding on the surface of the sheet of print medium to maintain the optical sensor at substantially the selected distance from the surface of the sheet of print medium.
Claims20
A sensor positioning system comprising:
- a moveable sensor holder having a following surface, the sensor holder configured to hold an optical sensor at a selected distance from the following surface;
- a biasing system configured to bias the following surface against a surface of a sheet of print medium;
- and
- a drive system configured to move the sensor holder across the sheet of print medium with the following surface biased against and sliding on the surface of the sheet of print medium to maintain the optical sensor at substantially the selected distance from the surface of the sheet of print medium.
An inkjet printer comprising:
- a printhead assembly having a plurality of stationary printhead dies arranged to form a page wide array;
- and
- a sensor assembly including:
- a sensor holder having a following surface;
- a biasing system configured to bias the following surface against the surface of the print medium;
- an optical sensor having an optical window mounted to the sensor mount with the optical window at a selected distance from the following surface;
- and
- a drive system configured to drive the sensor holder across the print medium in a reciprocating fashion along a scan axis, where the following surface slides along the surface of the print medium and maintains the optical window substantially at the selected distance from the surface of the print medium.
A method of positioning a sensor in an inkjet printer, the method comprising:
- mounting an optical sensor on a moveable sensor holder so that an optical window of the optical sensor is at a selected distance from a following surface of the sensor holder;
- biasing the sensor holder so that the following surface is held against a surface of a sheet of print medium;
- and
- moving the sensor holder across the sheet of print medium with the following surface biased against and sliding on the surface of the sheet of print medium to maintain the optical window of the optical sensor at substantially the selected distance from the surface of the sheet of print medium.
Dependencies are inferred from the claim text.