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patent

Color changing effects with cross-halftone prints

Pjanic, Petar  
•
Hersch, Roger D
2017

We propose new methods for creating color varying prints with classical cyan, magenta, yellow inks on a metallic specularly reflecting or on a white diffusely reflecting substrate. We use a special cross-line halftone with optimized surface coverages of the inks to create cross-halftone prints whose colors change when rotating the print in-plane under specular reflection. These prints enable viewing at the same location a first image with a first set of colors and upon in-plane rotation of the print or displacement of the observer, a similar or a different image whose parts are colored with a different set of colors. Applications comprise counterfeit prevention, art, advertisement, decoration, exhibitions and surprising displays in amusement parks.

  • Details
  • Metrics
Type
patent
EPO Family ID

60329094

Author(s)
Pjanic, Petar  
Hersch, Roger D
TTO classification

TTO:6.1572

EPFL units
AVP-R-TTO  
LSP  
IdentifierCountry codeKind codeDate issued

US9876931

US

B2

2018-01-23

US2017339301

US

A1

2017-11-23

Available on Infoscience
December 1, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/142393
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