US 12,460,972 B2
Colorimetry device, printing device, and calibration method
Tomoyuki Shiiya, Matsumoto (JP); and Yuji Hanaoka, Okaya (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Aug. 29, 2022, as Appl. No. 17/823,041.
Claims priority of application No. 2021-140966 (JP), filed on Aug. 31, 2021.
Prior Publication US 2023/0065467 A1, Mar. 2, 2023
Int. Cl. G01J 3/52 (2006.01)
CPC G01J 3/524 (2013.01) 8 Claims
OG exemplary drawing
 
1. A colorimetry device comprising:
a support surface configured to support a medium;
a colorimetry unit including an irradiation unit including a light source configured to irradiate an image printed on the medium supported by the support surface with light and a substrate provided with the light source, and a light-receiving sensor configured to receive reflected light that is light irradiated from the light source and reflected by the image, the colorimetry unit being configured to perform colorimetry of the image;
a movement carriage configured to cause the colorimetry unit to reciprocate along a predetermined direction;
a calibration member that is provided in the predetermined direction and that is used for calibration of the colorimetry unit, the calibration member comprising a white board that reflects light from the light source;
a temperature detecting sensor configured to detect a temperature of the light source or a temperature of the substrate;
a medium holder that is attached to support surface and configured to press the medium against the support surface when the colorimetry unit performs colorimetry of the image, the medium holder comprising a colorimetric window that penetrates the medium holder to expose the medium; and
a controller configured to determine, for the colorimetry of the image, whether to calibrate the colorimetry unit based on the temperature of the light source or the temperature of the substrate detected by the temperature detecting sensor and, when determining, for the colorimetry of the image, that the colorimetry unit is to be calibrated, move the colorimetry unit by the movement carriage to the calibration member and calibrate the colorimetry unit.