Laser coding

Details Laser coding Laser coding

2005-05-03

2005-05-03

Elve, M. Alexandra (Department: 1725)

Electric heating

Metal heating

By arc

C219S121850, C219S121600

Reexamination Certificate

active

06888095

ABSTRACT:
A method for making an object, wherein the object comprises a material including a functional group and a metal compound or acid that causes an elimination reaction on irradiation with a laser, to form a reaction product of contrasting colour, comprises directing a laser beam on to the areas of the object to be marked. For example, by using a carbohydrate and a metal salt, effective marking can be achieved on the coating of a pill or other edible material.

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