Color analysis
AssigneeHewlett-Packard Development Company, L.P.
InventorsJordi Arnabat Benedicto, Francisco Javier Pérez Gellida, Juan Uroz Soria, Oriol Borrell Avila, Emilio Angulo Navarro
Life of this patent
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Abstract
Techniques related to printing are described herein. According to an example, color patches are to be printed on a substrate. The substrate can be positioned on a substrate support for operation of a color sensor in a color measurement zone. Dimension and location in the substrate of the color patches are selected such that, for each color patch, at least a portion of the color patch can be positioned on a support projection in the color measurement zone. In some examples, color analysis techniques are described.
Claims15
A printing system for printing a substrate, the printing system comprising:
- a color measurement zone into which a color sensor is to determine color of color patches printed on the substrate;
- a substrate support for supporting the substrate at least in the color measurement zone during operation of the color sensor, the substrate support including
- i) projections extending from a base of the support and arranged to support the substrate, and
- ii) openings to allow deformation of the substrate towards the support base;
- and
- a test print engine to cause printing of the color patches on the substrate, the test print engine selecting dimension and location in the substrate of the color patches such that, for each color patch, at least a portion of the color patch can be positioned on a support projection in the color measurement zone when the substrate is positioned on the substrate support for operation of the color sensor.
A non-transitory tangible computer readable storage medium comprising instructions that, when executed by a processor, cause a printing system to:
- position a substrate on a substrate support such that at least a portion of a color patch printed on the substrate is on a projection of the substrate support, the substrate support further including openings to allow deformation of the substrate towards the support base;
- and
- cause a color sensor to acquire color of the color patch at a sample portion of the color patch, the sample portion being over the support projection.
A color analysis method for calibrating a printing system, the method comprising:
- printing a test pattern on a substrate, the test pattern including a plurality of color patches;
- positioning the substrate printed with the test pattern on a substrate support including
- i) projections extending from a base of the support, the projections arranged to support the substrate, and
- ii) openings to allow deformation of the substrate towards the support base,
- the positioning being performed such that, for each color patch, a sample portion of the color patch is over a portion of a projection in a color measurement zone;
- and
- determining color of the color patches at the sample portions in the color measurement zone.
Dependencies are inferred from the claim text.