Title:
【発明の名称】二次元コ―ドの形成方法
Document Type and Number:
Japanese Patent JP3010293
Kind Code:
B1
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.
Inventors:
Kazuo Sato
Application Number:
JP1919399A
Publication Date:
February 21, 2000
Filing Date:
January 28, 1999
Export Citation:
Assignee:
Kazuo Sato
International Classes:
B23K26/00; G06K1/12; G06K19/06; G09F7/14; (IPC1-7): G06K1/12; B23K26/00; G09F7/14
Attorney, Agent or Firm:
Katsuro Yoshikawa