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US 12,459,055 B2Granted
Laser irradiation apparatus and laser irradiation method
AssigneeRicoh Company, Ltd.
InventorsHiroyuki Tanabe, Kazunori Watanabe, Keiichi Serizawa
Life of this patent
Estimating the term…
Abstract
A laser irradiation apparatus includes a laser source configured to emit a laser beam to an object that is being conveyed to allow the object to be irradiated with the laser beam; a rotation detector configured to detect rotation of the object to obtain information on the rotation of the object; and circuitry configured to control laser irradiation onto the object based on the information on the rotation of the object.
Claims11
A laser irradiation apparatus comprising:
- a laser device configured to emit a laser beam to an object conveyed in a conveyance direction, the object having a polygonal columnar shape including a flat surface;
- a rotation detector configured to detect rotation of the object to obtain rotation information of the object;
- and
- circuitry configured to control the laser device to irradiate the object with the laser beam based on the rotation information of the object detected by the rotation detector,
- wherein the circuitry is further configured to control a timing at which the laser device starts irradiating the object that rotates around an axis along a direction orthogonal to the conveyance direction based on a rotation amount of the flat surface of the object in the conveyance direction, and
- wherein in a case in which the object rotates such that an upstream side of the flat surface of the object in the conveyance direction is closer to the laser device than a downstream side of the flat surface of the object in the conveyance direction, the circuitry is further configured to make the timing at which the laser device starts irradiating the object earlier than a case in which the flat surface is parallel to the conveyance direction.
3 more elements
A laser irradiation method comprising:
- emitting a laser beam from a laser device to an object conveyed in a conveyance direction, the object having a polygonal columnar shape including a flat surface;
- detecting rotation of the object conveyed in the conveyance direction to obtain rotation information of the object;
- detecting a position of the object;
- calculating a start position to start irradiating the object with the laser beam based on the rotation information;
- calculating the start position based on the position of the object;
- determining the start position based on the start position calculated;
- controlling the laser device to irradiate the object with the laser beam based on the rotation information of the object;
- controlling a timing at which the laser device starts irradiating the object that rotates around an axis along a direction orthogonal to the conveyance direction based on a rotation amount of the flat surface of the object in the conveyance direction;
- and
- in a case in which the object rotates such that an upstream side of the flat surface of the object in the conveyance direction is closer to the laser device than a downstream side of the flat surface of the object in the conveyance direction, making the timing at which the laser device starts irradiating the object earlier than a case in which the flat surface is parallel to the conveyance direction.
7 more elements
Dependencies are inferred from the claim text.