End-of-travel focus shift in an optical image scanner
AssigneeHewlett-Packard Development Company, L.P.
InventorKevin J. Youngers
Life of this patent
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Abstract
End-of-travel focus shift in an optical image scanner is provided. One embodiment comprises a method for optically scanning. Briefly described, one such method comprises translating an optical head to a first end-of-travel position and adjusting the distance between the optical head and a platen by engaging the optical head with a first stop member disposed at the first end-of-travel position.
Claims19
A method of optically scanning comprising:
- translating an optical head to a first end-of-travel position;
- and
- adjusting the distance between the optical head and a platen by engaging the optical head with a first stop member disposed at the first end-of-travel position.
The method of claim I, wherein the adjusting the distance between the optical head and a platen by engaging the optical head with a first stop member comprises guiding a shaft attached to the optical head along the slope of the ramp.
An optical scanner comprising:
- a platen to position a document to be scanned;
- a ramp member positioned below a lower surface of the platen at a first end-of-travel position;
- and
- an optical head having an arm positioned to engage the ramp member as the optical head is translated to the first end-of-travel position and thereby adjust the distance between the optical head and the platen.
An optical scanner comprising:
- a platen to position a document to be scanned;
- an optical head;
- and
- an end-of-travel means for adjusting the distance between the platen and the optical head at an end-of-travel position.
Dependencies are inferred from the claim text.