PROVISION OF FRAMES OR BORDERS AROUND PIGMENT FLAKES FOR COVERT SECURITY APPLICATIONS
A plurality of pigment flakes are provided to protect the symbol of flakes in the process for separating flakes from a temporal supporting substrate. A plurality of pigment flakes comprise a frame of the periphery circumference restricted by a wall and a domain inside the frame, wherein the height o...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A plurality of pigment flakes are provided to protect the symbol of flakes in the process for separating flakes from a temporal supporting substrate. A plurality of pigment flakes comprise a frame of the periphery circumference restricted by a wall and a domain inside the frame, wherein the height of the at least frame wall is Fh or more, the domain inside the frame has the mark restricted by at least one groove having a depth less than Id formed in the inside, and Fh > Id. |
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