Patent No. EP4238689 (titled "Marking Apparatus And Marking Method") was filed by Cajo on Mar 4, 2022. The application was issued on Nov 20, 2024.
A marking apparatus and method for creating readable marks on unbleached or partially bleached natural fiber materials, such as cardboard, using a carbon dioxide laser. The apparatus achieves clear and durable marks by precisely controlling the laser power to avoid burning while maintaining readability, eliminating the need for multiple process stages.

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