# US 2026/0249618 A1 · System for laser marking of products > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0249618 A1 - Document ID: US20260249618A1 - Status: Published application - Kind: A1 - Application number: 18/861,635 - Filed: 2023-05-01 - Published: 2026-08-27 - Earliest claimed: 2022-05-02 - Assignees: Husky Injection Molding Systems Ltd. - Applicants: Husky Injection Molding Systems Ltd. - Inventors: Christophe Halter - Web page: https://patentgrep.com/patent/US20260249618A1 ## CPC - B41J 2/44: using single radiation source {per colour}, e.g. lighting beams or shutter arrangements (B41J2/475 takes precedence) - B41J 2/442: {using lasers} - B41J 2/455: using laser arrays {, the laser array being smaller than the medium to be recorded} - B41J 2/525: Arrangement for multi-colour printing, not covered by group B41J2/21, e.g. applicable to two or more kinds of printing or marking process - B41J 3/40733: {Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles} - B41M 5/267: {Marking of plastic artifacts, e.g. with laser} - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS - B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P) ## Abstract A system for marking a product is provided. The product includes a markable region having: at least one first region of a photoactivatable material, at a first depth in a wall of the product, and at least one second region of the photoactivatable material, at a second depth in the wall of the product. The system comprises: a laser configured to emit a beam having a beam energy density above a threshold energy density; a beam modulator component configured to modulate a focusing distance of the beam to: a first focusing distance which is incident on the at least one first region for creating the markings in the at least one first region, and a second focusing distance incident on the at least one second region for creating the markings in the at least one second region. ## Claims ### Claim 1 A system for marking a product the product including a markable region having: at least one first region of a photoactivatable material, at a first depth in a wall of the product, for forming markings when activated by a first incident beam above a first threshold energy density, and at least one second region of the photoactivatable material, at a second depth in the wall of the product, for forming markings when activated by a second incident beam above a second threshold energy density; the system comprising: at least one laser configured to emit a beam having a beam energy density above one of the first threshold energy density and the second threshold energy density at a focal region of the beam and a beam energy density below the one of the first threshold energy density and the second threshold energy density outside of the focal region of the beam; a beam modulator component configured to modulate a focusing distance of the beam; and a processor communicatively coupled to the beam modulator component, the processor being configured to cause the beam modulator component to modulate the focusing distance of the beam to: a first focusing distance which is incident on the at least one first region for creating the markings in the at least one first region, and a second focusing distance incident on the at least one second region for creating the markings in the at least one second region. ### Claim 2 (depends on 1) The system of claim 1, wherein the at least one first region has been produced from a first photoactivatable material; and the at least one second region have been produced from a second photoactivatable material, different from the first photoactivatable material. ### Claim 3 (depends on 2) The system of claim 2, wherein: the first photoactivatable material is configured for forming markings of a first color when activated by the first incident beam; and the second photoactivatable material is configured for forming markings of a second color when activated by the second incident beam; and wherein the processor is configured to cause the beam modulator component to modulate the focusing distance of the beam to: the first focusing distance which is incident on the at least one first region for creating the markings of the first color in the at least one first region, and the second focusing distance incident on the at least one second region for creating the markings of the second color in the at least one second region. ### Claim 4 (depends on 3) The system of claim 3, wherein: the second threshold energy density is different from the first threshold energy density; and wherein the at least one laser is configured to modulate the beam energy density of the beam between at least the first threshold energy density and at least the second threshold energy density. ### Claim 5 (depends on 4) The system of claim 4, wherein the processor is further communicatively coupled to the at least one laser for causing adjustments to an emitted energy density of the at least one laser. ### Claim 6 (depends on 5) The system of claim 5, wherein the at least one laser includes at least one tunable laser configured for emitting: at least a first wavelength suitable for absorption by the first photoactivatable material, and at least a second wavelength suitable for absorption by the second photoactivatable material. ### Claim 7 (depends on 6) The system of claim 6, wherein the at least one laser is a Near Infrared (NIR) laser. ### Claim 8 (depends on 4) The system of claim 4, wherein: the at least one laser includes a first laser and a second laser, the first laser being configured to emit a first beam of at least a first wavelength suitable for absorption by the first photoactivatable material, the first beam having a beam energy density above the first threshold energy density at a first focal region of the first beam and a beam energy density below the first threshold energy density outside the first focal region, and the second laser being configured to emit a second beam of at least a second wavelength suitable for absorption by the second photoactivatable material, the second beam having a beam energy density above the second threshold energy density at a second focal region of the second beam and a beam energy density below the second threshold energy density outside the second focal region; and the processor is configured to cause the beam modulator component to modulate: (i) the focusing distance of the first beam to the first focusing distance for creating the markings of the first color in the at least one first region; and (ii) the focusing distance of the second beam to the second focusing distance for creating the markings of the second color in the at least one second region. ### Claim 9 (depends on 8) The system of claim 8, wherein the first laser of a first laser type, and the second laser of a second laser type, different from the first laser type. ### Claim 10 (depends on 9) The system of claim 9, wherein: the first laser type is configured for causing foaming of the at least one first region, thereby creating the markings of the first color therein; and the second laser is configured for causing carbonization of the at least one second region, thereby creating the markings of the second color therein. ### Claim 11 (depends on 9) The system of claim 9, wherein the first laser type comprises a Near Infrared (NIR) laser, and the second laser type comprises a carbon dioxide laser. ### Claim 12 (depends on 3) The system of claim 3, wherein the first color is different from the second color. ### Claim 13 (depends on 3) The system of claim 3, wherein: the markable region of the product has at least one third region, at a third depth in a wall of the product, encapsulated by the at least one first region and the at least one second region, the at least one third region being of a third photoactivatable material which can form markings having a third color when activated by an incident beam above a third threshold energy density; and the processor is further configured to cause the beam modulator component to modulate the focusing distance of the beam to a third focusing distance which is incident on the at least one third region for creating the markings in the at least one third region. ### Claim 14 (depends on 1) The system of claim 1, wherein the at least one laser is configured to emit the beam having the focal region smaller in depth than that of any one of the at least one first region and the at least one second region of the markable region. ### Claim 15 (depends on 1) The system of claim 1, wherein the product has a layered structure and each one of the at least one first region and the at least one second region corresponds to a respective layer of the layered structure. ### Claim 16 (depends on 1) The system of claim 1, wherein the product is a container having been produced from a moldable article. ### Claim 17 A method for marking a product in a markable region thereof, the markable region including: at least one first region of a photoactivatable material for forming markings therein when activated by a first incident beam above a first threshold energy density, and at least one second region of the photoactivatable material for forming the markings therein when activated by a second incident beam above a second threshold energy density; the method being executable by a processor communicatively coupled to a beam modulator the method comprising: causing, by the processor, the beam modulator to modulate a focusing distance of a beam incident thereon along a first optical axis, to a first focusing distance which is incident on the at least one first region for creating the markings in the at least one first region; and causing, by the processor, the beam modulator to modulate the focusing distance of the beam to a second focusing distance which is incident on the at least one second region for creating the markings in the at least one second region, the beam having a beam energy density above one of the first threshold energy density and the second threshold energy density at a focal region of the beam and a beam energy density below the one of the first threshold energy density and the second threshold energy density outside of the focal region of the beam.