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US 10,300,719 B2Granted
Rotating a printhead relative to vertical
AssigneeHewlett-Packard Development Company, L.P.
InventorNorman E. Pawlowski
Life of this patent
Estimating the term…
Abstract
In one example, a printer having a rotation mechanism coupleable to a liquid-ejecting printhead in the printer. The printer includes a controller coupled to the rotation mechanism to control the rotation mechanism to intermittently rotate the printhead, during a non-printing time, from a first orientation relative to vertical to a second orientation relative to vertical and back to the first orientation.
Claims20
A printer, comprising:
- a rotation mechanism coupleable to a liquid-ejecting printhead in the printer;
- and
- a controller coupled to the rotation mechanism to control the rotation mechanism to intermittently rotate the printhead, during a non-printing time, from a first orientation relative to vertical to a second orientation relative to vertical and back to the first orientation;
- wherein the controller is to interrupt printing when a maximum printing time has elapsed between rotations of the printhead and rotate the printhead.
1 more element
A printer, comprising:
- a printhead rotator coupleable to a printbar having plural printhead die connected through parallel flow paths to a liquid supply, each printhead die cappable by a cap;
- a controller coupled to the printhead rotator to intermittently rotate the printbar, when capped, from a first orientation relative to vertical to a second orientation relative to vertical and back to the first orientation during a non-printing time.
A method for maintaining a printhead, comprising:
- determining an idle time duration that the printhead is in an idle state;
- and
- if the idle time duration exceeds a maximum idle time associated with a liquid coupled to the printhead, rotating the printhead in a direction from a first orientation relative to vertical to a second orientation relative to vertical and back to the first orientation according to rotation parameters associated with the liquid.
Dependencies are inferred from the claim text.