Invention Grant
- Patent Title: Colorimetric device, image forming apparatus, and calibration method
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Application No.: US18320539Application Date: 2023-05-19
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Publication No.: US11893429B2Publication Date: 2024-02-06
- Inventor: Rie Suzuki , Tatsuya Ishii
- Applicant: Rie Suzuki , Tatsuya Ishii
- Applicant Address: JP Kanagawa
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: IPUSA, PLLC
- Priority: JP 22095180 2022.06.13
- Main IPC: G06K15/02
- IPC: G06K15/02 ; B41J2/21 ; G01N21/25 ; G03G15/01

Abstract:
A colorimetric device includes: a white reference portion having: a first irradiation area; and a second irradiation area different from the first irradiation area; a light emitter including: a first light source configured to emit visible light to the first irradiation area; and a second light source configured to emit ultraviolet light to the second irradiation area; a sensor configured to detect the visible light reflected from the first irradiation area and the ultraviolet light reflected from the second irradiation area; and a processor configured to: measure colorimetric information of an object; and calibrate the colorimetric information of the object based on the visible light and the ultraviolet light detected by the sensor.
Public/Granted literature
- US20230401405A1 COLORIMETRIC DEVICE, IMAGE FORMING APPARATUS, AND CALIBRATION METHOD Public/Granted day:2023-12-14
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