公开(公告)号：US20250128523A1

公开(公告)日：2025-04-24

申请号：US18911654

申请日：2024-10-10

Applicant: KEYENCE CORPORATION

Inventor： Mamoru Idaka ,  Kentaro Yamazaki ,  Shota Nakano

IPC: B41J11/00 ,  B41J2/175 ,  G01B11/25

Abstract: Occurrence of a drawing failure is suppressed. An ink jet printer includes: a nozzle configured to eject ink toward a drawing target object; a storage unit that stores drawing data specifying an ejection timing of the nozzle at each of a plurality of offset positions in a conveyance direction, the ejection timing corresponding to drawing information; an optical movement measurement sensor that receives light from the drawing target object and generates a measurement value related to movement of the drawing target object in the conveyance direction based on the received light; and a drawing control unit that controls ink ejection from the nozzle based on reference position information indicating that a reference position of the drawing target object is at a predetermined position, a current offset position with respect to the reference position based on the measurement value generated by the optical movement measurement sensor, and the drawing data.

公开(公告)号：US20250128511A1

公开(公告)日：2025-04-24

申请号：US18911499

申请日：2024-10-10

Applicant: KEYENCE CORPORATION

Inventor： Shota Nakano ,  Kentaro Yamazaki

IPC: B41J2/125 ,  B41J2/045 ,  G01N21/17 ,  G01N21/47

Abstract: An ink jet printer 1 includes: a storage unit that stores drawing data specifying an ejection timing, which corresponds to drawing information, of a nozzle at each of a plurality of offset positions in a conveyance direction; an optical movement measurement sensor that includes an imaging device and generates a measurement value related to movement of a drawing target object based on a measurement image; a fixing portion for positioning and fixing the optical movement measurement sensor with respect to the nozzle such that a depth of field of the imaging device includes the drawing distance range of the nozzle with respect to a distance direction from the nozzle; and a drawing control unit that controls ink ejection from the nozzle based on a current offset position based on the measurement value and the drawing data.

公开(公告)号：US20250128526A1

公开(公告)日：2025-04-24

申请号：US18911856

申请日：2024-10-10

Applicant: KEYENCE CORPORATION

Inventor： Mamoru Idaka ,  Kentaro Yamazaki ,  Shota Nakano

IPC: B41J11/00 ,  B65B61/02 ,  G01S17/50

Abstract: An ink jet printer includes: a nozzle configured to eject the ink toward a drawing target object; a storage unit that stores drawing data specifying an ejection timing of the nozzle at each of a plurality of offset positions in a conveyance direction, the ejection timing corresponding to drawing information; a distance sensor that measures a distance to the drawing target object in an ejection direction of the nozzle; and a drawing control unit that controls ink ejection from the nozzle based on the drawing data and a current relative position from the nozzle to each of a plurality of offset positions of the drawing data. The drawing control unit controls the ink ejection based on a determination result as to whether the distance to the drawing target object in the ejection direction of the nozzle measured by the distance sensor satisfies the predetermined criterion.

公开(公告)号：US20250128525A1

公开(公告)日：2025-04-24

申请号：US18911744

申请日：2024-10-10

Applicant: KEYENCE CORPORATION

Inventor： Mamoru Idaka ,  Shota Nakano ,  Kentaro Yamazaki

IPC: B41J11/00 ,  B41J29/46 ,  B65B61/02 ,  G01B11/25

Abstract: An ink jet printer includes: a nozzle configured to eject ink toward a drawing target object; a storage unit that stores drawing data specifying an ejection timing of the nozzle at each of a plurality of offset positions, the ejection timing corresponding to drawing information; an optical movement measurement sensor that receives light from the drawing target object and generates a measurement value related to movement of the drawing target object in the conveyance direction based on the received light; a drawing control unit that controls ink ejection from the nozzle based on a current offset position based on the measurement value, and the drawing data; an evaluation unit that evaluates reliability of measurement by the optical movement measurement sensor; and an abnormality processing unit that executes an abnormality process when the reliability evaluated by the evaluation unit does not satisfy a predetermined criterion.