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US 10,894,428 B2Granted
Image processing device, cockling detection method, machine learning system
AssigneeSeiko Epson Corporation
InventorsKazunari Tsukada, Tetsuo Tatsuda
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Abstract
Provided is technology enabling detecting cockling in a print medium without printing a cockling detection pattern on the print medium. An image processing device has: a light source configured to illuminate a print medium; a sensor configured to scan the print medium; and a controller configured to control the light source and sensor. The controller determines if there is cockling in an evaluation area of the print medium based on change in the detection values of the sensor in the evaluation area.
Claims10
An image processing device comprising:
- a light source configured to illuminate a print medium;
- a sensor configured to scan a cockling evaluation area in the print medium illuminated by the light source;
- and
- a controller configured to control the light source and sensor;
- the controller determining if there is cockling based on change in a detection value that is either a gradation value read by the sensor in the evaluation area, or reflectivity acquired by converting the gradation value,
- wherein change in the detection value is change from a detection value expected when there is no cockling on the print medium,
- a minimum limit of a specific range including a detection value used as a white reference of the print medium is a threshold, and
- the controller determines there is cockling when the detection value is less than or equal to the threshold.
5 more elements
A cockling detection method comprising:
- acquiring a detection value of a sensor that scans a print medium illuminated by a light source;
- and
- determining if there is cockling in an evaluation area of a print medium based on change in a detection value that is either a gradation value read by the sensor in the evaluation area, or reflectivity acquired by converting the gradation value,
- wherein change in the detection value is change from a detection value expected when there is no cockling on the print medium,
- a minimum limit of a specific range including a detection value used as a white reference of the print medium is a threshold, and
- there is cockling when the detection value is less than or equal to the threshold.
3 more elements
Dependencies are inferred from the claim text.