Retroreflective sheeting having deformed cube corner elements

Retroreflective sheeting having deformed cube corner elements

  • CN 104,956,242 B
  • Filed: 01/09/2014
  • Issued: 05/12/2020
  • Est. Priority Date: 01/28/2013
  • Status: Active Grant
First Claim
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1. A retroreflective sheeting comprising:

  • a structured surface comprising cube corner elements, wherein at least some of the cube corner elements are thermally sheared cube corner elements forming a grayscale marking, and wherein the grayscale marking comprises;

    a first pixel comprising a plurality of first thermally sheared cube corner elements having a first reduced optically active volume; and

    a second pixel comprising a plurality of second thermally sheared cube corner elements having a second reduced optically active volume different from the first reduced optically active volume, wherein optically active volume refers to the portion or volume of each cube corner element that causes retroreflection, the initial optically active volume has a corresponding initial active volume height, and the height of the deformed cube corner element is the amount, defined as the reduced portion of the active volume height, subtracted from its initial height.

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