A single pulse is enough.
Or the principle of our mask lasers
The pulsed laser beam is generated by a gas discharge and deflected using a mirror to impinge directly on a metal mask on which the marking content has been etched, and onto the product. That part of the laser beam which impinges on the metal is reflected and lost. The other part of the beam, which passes through the mask, is focused through a lens onto the medium to be marked. The marking is done. The complete marking content has been fixed to the material using a single light-induced pulse, with the highest degree of precision and in the shortest possible time.
This is how our mask markers are used, in particular for marking products which are moving very fast – such as in beverage lines. Here they achieve line speeds of up to 50 meters per second – depending on the model in operation – in other words: they are capable of fixing up to 180,000 marks* per hour (= 50 per second). The fixing of a single mark* is carried out in only 1 to 2 microseconds. This is substantially faster than any other process. And because of the insensitivity of the systems to product vibration, marking is always maintained at the very highest quality level even at these high speeds.
Our mask markers code small areas with use-by and manufacturing dates, batch and serial numbers, or logos and graphics. If this content changes, new masks are manually installed or processor-controlled discs are used, on which various different masks are attached.
Worldwide, the ALLTEC Laser Business Unit is one of the few and at the same time the most important manufacturer of this highly efficient and low-maintenance marking process.
* 1 marking corresponds precisely to the content of a single mask