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US 11,077,675 B2Granted
E-paper imager
AssigneeHewlett-Packard Development Company, L.P.
InventorsNapoleon J. Leoni, Omer Gila, Henryk Birecki
Life of this patent
Estimating the term…
Abstract
An imager includes an ion-emitting unit and a conveying structure to move a passive e-paper display medium in a first orientation along a travel path and to releasably support the display medium in spaced relation to receive airborne ions from the ion-emitting unit for imaging operations.
Claims11
An imager comprising:
- a frame defining, at least, a travel path along a first orientation;
- an ion-emitting erasing unit and an ion-emitting writing unit, both located along the travel path with the writing unit spaced apart downstream from the erasing unit;
- a conveying structure to move and releasably support a passive e-paper display medium in the first orientation in spaced relation to receive airborne ions from at least one of the respective erasing and writing units for imaging operations;
- and
- a validation arrangement to permit target-content imaging operations via the respective erasing and writing units upon a determination that the display medium is valid and to prevent target-content imaging operations upon a determination that the display medium is invalid, wherein a conductive element forms part of the validation arrangement.
2 more elements
An imager comprising:
- a frame defining, at least, a travel path along a first orientation;
- an ion-emitting erasing unit and an ion-emitting writing unit, both located along the travel path with the writing unit spaced apart downstream from the erasing unit;
- and
- a conveying structure to move and releasably support a passive e-paper display medium in the first orientation in spaced relation to receive airborne ions from at least one of the respective erasing and writing units for imaging operations;
- an image evaluation module including a camera aligned with the travel path to capture an image of a re-writable portion of the passive e-paper display medium, wherein the image evaluation module is to evaluate the captured image regarding at least one of:
- an image quality parameter;
- a defect detection parameter;
- a color calibration parameter;
- and
- a security indicia parameter.
7 more elements
An imager comprising:
- a frame defining, at least, a travel path along a first orientation;
- an ion-emitting erasing unit and an ion-emitting writing unit, both located along the travel path with the writing unit spaced apart downstream from the erasing unit;
- a conveying structure to move and releasably support a passive e-paper display medium in the first orientation in spaced relation to receive airborne ions from at least one of the respective erasing and writing units for imaging operations;
- and
- an array of location sensors arranged in series and spaced apart along the travel path, each location sensor to identify a presence or absence of the display medium at each respective location of a corresponding sensor.
2 more elements
Dependencies are inferred from the claim text.