Method for forming 2-dimensional code by laser marking and...

Details Method for forming 2-dimensional code by laser marking and... Method for forming 2-dimensional code by laser marking and...

2005-04-26

2009-10-13

Tran, Huan H (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Reexamination Certificate

active

07602409

ABSTRACT:
It is judged whether a marking unit formed on a material becomes a bright mark or a dark mark. Based on this judgment, for the work W of a material in which the marking unit becomes a bright mark, the code symbol of the 2-dimensional code of the original image is bright/dark-reversed to generate a reversed code symbol1R. By doing this, a laser marker10is controlled so as to apply a laser beam to the cell of the background portion without applying the laser beam on the cell of the code portion. On the other hand, in the case of the normal material in which the marking unit becomes a dark mark, the laser marker10is controlled to apply the laser beam to the cell of the code portion without applying the beam to the cell of the background portion.

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Computer-generated translation of JP 2003-291535, published on Oct. 15, 2003.
Computer-generated translation of JP 2004-38328, published on Feb. 5, 2004.
Computer-generated translation of JP 2001-043297, published on Feb. 2001.

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