Formation method of two-dimensional code
First Claim
1. A formation method of a two-dimensional code for forming the two-dimensional code, where dark or bright unit cells are arranged in a matrix, on a marking surface by laser burning, comprising the steps of:
- storing a bright or dark cell as an element of a two-dimensional array having a value of 0 or 1 after reading a bit map file;
calculating a number of round dots contained in a cell from the size of one cell to be laser-marked and a processed diameter of a round dot formed by a laser beam according to material processed;
obtaining a processed area from the two-dimensional array, which is stored and is configured by zeroes and ones, and the size of one cell;
setting a plurality of cell frames at intervals of one cell width in the X and Y directions in a checked pattern with a center point of this processed area as a base, arranging the round dots inside corners of the cell frames so that the round dots may be inscribed in the corners and arranging the round dots at equal intervals between the round dots inscribed in the corners, in the vertical and horizontal directions;
storing coordinates of beam spots, which correspond to centers of respective round dots arranged in a processed area, in memory; and
outputting this process data stored in the memory to a laser marker and performing laser-marking on the marking surface.
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Accused Products
Abstract
A formation method of a two-dimensional code is characterized by including the steps of: storing each cell having a bright pattern or a dark pattern as 0 or 1 in a two-dimensional array after reading a bit map file; calculating a number of round dots contained in a cell from the size of one cell to be laser-marked and a processed diameter of a round dot formed by a laser beam according to material processed; obtaining a processed area from the two-dimensional array stored and the size of one cell; setting a plurality of cell frames in a checked pattern with this center point as a base; arranging the round dots in equal intervals in the cell frames; storing in memory the coordinates of beam spots corresponding to the respective round dots arranged; and outputting process data stored in this memory to a laser marker and performing laser-marking.
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Citations
3 Claims
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1. A formation method of a two-dimensional code for forming the two-dimensional code, where dark or bright unit cells are arranged in a matrix, on a marking surface by laser burning, comprising the steps of:
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storing a bright or dark cell as an element of a two-dimensional array having a value of 0 or 1 after reading a bit map file;
calculating a number of round dots contained in a cell from the size of one cell to be laser-marked and a processed diameter of a round dot formed by a laser beam according to material processed;
obtaining a processed area from the two-dimensional array, which is stored and is configured by zeroes and ones, and the size of one cell;
setting a plurality of cell frames at intervals of one cell width in the X and Y directions in a checked pattern with a center point of this processed area as a base, arranging the round dots inside corners of the cell frames so that the round dots may be inscribed in the corners and arranging the round dots at equal intervals between the round dots inscribed in the corners, in the vertical and horizontal directions;
storing coordinates of beam spots, which correspond to centers of respective round dots arranged in a processed area, in memory; and
outputting this process data stored in the memory to a laser marker and performing laser-marking on the marking surface. - View Dependent Claims (2, 3)
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Specification