The use of lasers for colour marking is not a particularly new technique as it has been recognized for over 10 years. This technique was originally identified as a viable process for use on craft metal work and jewellery. However, the process has had very little commercial impact in the intervening years. There is now a greater interest in this process as manufacturers of consumer goods are looking for new techniques and finishes to provide product differentiation. This application note looks at a variety of materials that are colour mark-able including titanium and stainless steel, and explores the benefits and parameters of the pulsed fiber laser in relation to this application area.
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