# US 12,109,831 B2 · Laser processing system

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- Number: US 12,109,831 B2
- Document ID: US12109831B2
- Status: Granted
- Kind: B2
- Application number: 17/999,893
- Filed: 2021-05-27
- Published: 2023-07-06
- Granted: 2024-10-08
- Earliest claimed: 2020-06-30
- Assignees: OMRON Corporation
- Applicants: Omron Corporation
- Inventors: Tatsunori Sakamoto; Yoshimitsu Ashihara; Kazumi Tsuchimichi; Tadamasa Yokoi; Naoki Yoshitake
- Web page: https://patentgrep.com/patent/US12109831B2

## CPC

- B41M 5/24: Ablative recording, e.g. by burning marks; Spark recording {(marking by high energetic means, e.g. by laser otherwise than burning or ablative removal B41M5/26; materials or methods for recording or reproduction by optical means G11B7/00)}
- B23K 26/00: Working by laser beam, e.g. welding, cutting or boring
- B23K 26/03: Observing, e.g. monitoring, the workpiece
- 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)
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM

## Abstract

A laser processing device includes a setting device that sets an irradiation condition of laser light, and a first storage that stores the set irradiation condition. The setting device sets different irradiation conditions respectively for cells included in test cells. A verification device captures an image of the processing pattern and calculates luminance values for the cells respectively. The setting device sets at least one of the irradiation conditions for main processing, based on information on luminance values of the test cells extracted from the luminance values for the cells and based on the irradiation conditions set for the test cells.

## Claims

### Claim 1

A laser processing system comprising:
a laser processing device configured to process a processing target in accordance with a processing pattern; and
a verification device configured to verify processing by the laser processing device, wherein
the processing pattern includes a plurality of cells,
the laser processing device includes:
a receiving unit configured to receive the processing pattern;
a setting unit configured to set an irradiation condition of laser light for each of the cells of the processing pattern received by the receiving unit;
a first storage unit configured to store the irradiation condition set by the setting unit for the each of the cells for which the irradiation condition is set; and
an irradiation unit configured to irradiate the processing target with the laser light based on the irradiation condition set by the setting unit,
the setting unit sets, as test cells, a part of the processing pattern received in test processing, and sets different irradiation conditions respectively for the cells included in the test cells,
the verification device includes:
an imaging unit configured to capture an image of the processing pattern formed on the processing target; and
a calculation unit configured to calculate luminance values for the cells respectively based on the image captured by the imaging unit, and
the setting unit sets at least one of the irradiation conditions for main processing, based on information on luminance values of the test cells extracted from the luminance values for the cells and based on the irradiation conditions set for the test cells.

### Claim 2 (depends on 1)

The laser processing system according to claim 1, wherein
the verification device further includes a transmission unit configured to transmit the luminance values for the respective cells calculated by the calculation unit to the laser processing device, and
the setting unit further extracts information on the luminance values of the test cells based on arrangement information of the test cells and the luminance values for the respective cells received from the verification device.

### Claim 3 (depends on 1)

The laser processing system according to claim 1, wherein
the verification device further includes a communication unit configured to communicate with the laser processing device,
the calculation unit further extracts information on the luminance values of the test cells based on arrangement information of the test cells and on the calculated luminance values for the respective cells,
the communication unit transmits the information on the luminance values of the test cells extracted by the calculation unit to the laser processing device, and
the setting unit receives the information on the luminance values of the test cells from the verification device.

### Claim 4 (depends on 3)

The laser processing system according to claim 3, wherein the verification device acquires the arrangement information of the test cells from the laser processing device.

### Claim 5 (depends on 3)

The laser processing system according to claim 3, wherein
the verification device further includes a second storage unit, and
the arrangement information of the test cells is stored in advance in the second storage unit.

### Claim 6 (depends on 1)

The laser processing system according to claim 1, wherein
the information on the luminance values of the test cells includes at least one of information indicating a cell whose luminance is highest in the test cells and information indicating a cell whose luminance is lowest in the test cells, and
the setting unit sets the irradiation condition for main processing based on the irradiation condition set for the cell specified by the information on the luminance values of the test cells.

### Claim 7 (depends on 1)

The laser processing system according to claim 1, wherein
the information on the luminance values of the test cells includes at least one of information indicating two or more cells selected in descending order of luminance in the test cells and information indicating two or more cells selected in ascending order of luminance in the test cells, and
the setting unit sets the irradiation condition for main processing based on at least one of an average value of the irradiation conditions set for two or more cells whose luminance is high among the cells specified by the information on the luminance values of the test cells and an average value of the irradiation conditions set for two or more cells whose luminance is low among the cells specified by the information on the luminance values of the test cells.

### Claim 8 (depends on 1)

The laser processing system according to claim 1, wherein
the receiving unit receives a material of the processing target, and
the setting unit sets different irradiation conditions respectively for the cells on the test cells in test processing based on the material of the processing target received by the receiving unit.

### Claim 9 (depends on 1)

The laser processing system according to claim 1, wherein
the laser processing device determines a variation in the luminance values in a region to which a same irradiation condition is set in test processing based on the luminance values for the respective cells calculated by the calculation unit, and
the setting unit sets the irradiation condition for base treatment based on the information on the luminance values of the test cells and the irradiation conditions set for the test cells when the variation in the luminance values in the region exceeds a threshold value.

### Claim 10 (depends on 1)

The laser processing system according to claim 1, wherein the processing pattern is a two-dimensional code.

### Claim 11 (depends on 10)

The laser processing system according to claim 10, wherein the test cells are set based on an information unit of the processing pattern.

### Claim 12 (depends on 10)

The laser processing system according to claim 10, wherein the test cells are set in a region of the processing pattern excluding a region used to detect a position of the two-dimensional code.
