Patent ID: 11968345
Assignee: INNOVIEW SARL
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. An authenticable color halftone print produced by a printing device, the print comprising as characteristic features ink halftones forming juxtaposed clusters of densely spaced segments, each segment partly or fully surrounded by unprinted boundaries, where printing is performed by sending the juxtaposed clusters of densely spaced segments to the printing device, and wherein:
the juxtaposed clusters of densely spaced segments are surrounded by unprinted space,
the juxtaposed clusters of densely spaced segments are laid out obliquely along diagonals,
the diagonals of the juxtaposed clusters of densely spaced segments belonging to different colorants have a same oblique orientation,
the juxtaposed clusters of densely spaced segments belonging to the different colorants do not overlap, and
authentication is performed with an RGB camera capturing an image of said ink halftones and verifying on smooth areas of the image whether said characteristic features are present.