Check-tile for colour measurement instruments
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United States of America Patent
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Dec 16, 2014
Grant Date -
Oct 3, 2013
app pub date -
Dec 20, 2011
filing date -
Dec 20, 2010
priority date (Note) -
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Abstract
The invention relates to a check-tile for validating instrument scales of color measurement instruments, in particular goniospectrophotometers, said check-tile comprising a non-transparent (opaque) substrate coated with a multi-layer coating, said multi-layer coating comprising: A) a pigmented ground coat, wherein said pigmented ground coat is opaque and made of a base coat coating composition I comprising at least one achromatic solid pigment, B) a pigmented mid-coat, wherein said pigmented mid-coat is translucent and made of a base coat coating composition II comprising at least one transparent interference pigment and at least one transparent or semi-transparent solid pigment, and C) a clear top coat made of a transparent clear coat coating composition on top of the mid-coat.
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