Hewlett-packard Development Company, L.P.

Greg S Smith, Jr

William James Allen

Robert Alan Ulichney

Ben Wynne

Guang Jin Li

A method of forming a data-hiding watermark on a surface may include encoding data within an image using the chrominance data of the of the image, adjusting at least one characteristic of the image to enhance the prominence of the encoded data within the image, and printing the adjusted, encoded image onto the surface.

Encoded monochrome images of data-hiding watermarks

The present disclosure provides composite support material and associated methods used in the fabrication of three-dimensional objects. In one example, a composite support material for three-dimensional printing can include a soluble filament core that is soluble in a solvent and is encapsulated with an insoluble shell that is insoluble in the solvent. The composite support material is stable in air and, when printed, is dissolvable in the solvent.

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San Diego, CA, United States of America

Greg S Smith, Jr