High-speed laser marking with diode arrays

Francesc Bravo-Montero, David Castells-Rufas, Jordi Carrabina

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)


The creation of visible changes marked onto object surfaces by laser has become an effective way of coding industrial products. Industrial applications for printing solutions drive the demand for higher speed and higher throughput for in-line digital laser marking. Currently, most laser marking equipment is based on a single laser beam with the corresponding sequential processing that culminates in a performance bottleneck which limits printing production line speed to a de facto barrier of 8 m/s. In this paper, we present a system that overcomes this barrier by using a matrix of laser beams controlled by an embedded high-performance computing platform. The industrialized solutions presented in this paper can print images of 50 to 200 dpi resolution on printing substrates widths ranging from 6 mm to 50 mm, at product line speeds of up to 16 m/s. The analysis we have performed suggests that even higher speeds could be achieved by investing in additional laser beams.

Original languageEnglish
Article number107551
Number of pages10
JournalOptics and Laser Technology
Publication statusPublished - Feb 2022


  • Digital Printing
  • Diode Lasers
  • Industrial Control
  • Industry 4.0
  • Laser Applications
  • Laser Diode Arrays (LDA)
  • Optical fibers
  • Real-Time Systems
  • Reconfigurable Architectures
  • Semiconductor Laser Arrays


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