Uniform output of light-emitting diode array
AssigneeHewlett-Packard Industrial Printing Ltd.
InventorsYochai EDLITZ, Ran Vilk, Alexander Markman
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Abstract
Examples are provided of plural light-emitting diodes (LEDs) arranged as vectors within an array. The vectors are individually drivable by way of a controller. A sensor scans the array and individual energy output values are correlated to electrical drive currents for each vector. The correlated data is recorded and used to control the vectors such that an equalized or uniform photonic energy profile is incident upon a media positioned as a target with respect to the LED system.
Claims15
A system, comprising:
- a plurality of light-emitting diodes (LEDs) arranged to define one or more vectors;
- a sensor to be translated along a pathway proximate to the LEDs, the sensor to provide signaling corresponding to an energy output from each of the vectors;
- a computer to receive the signaling and to derive a data set correlating a photonic energy value with an electric drive current for each of the vectors;
- and
- a controller to use the data set to equalize photonic energy outputs from the LEDs incident upon a target.
A printing system, comprising:
- a controller;
- a print engine to form images on media by way of ink-jetting, the print engine controlled by the controller;
- a plurality of light-emitting diodes (LEDs) arranged as a page-wide array, the LEDs electrically coupled to each other such that one or more individually controllable vectors are defined, the LEDs to emit photonic energy to cure ink on the media;
- a sensor to be translated relative to the page-wide array, the sensor to provide signals corresponding to a photonic energy from each the vectors;
- and
- a computer to derive a data set from the signals, the controller to use the data set to control each of the vectors.
The printing system according to cam the sensor to be translated so as to provide signals corresponding to each and every one of the vectors of the page-wide array.
Dependencies are inferred from the claim text.