Colorimetric apparatus and colorimetric method
US8807696B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Mar 19, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/251
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an apparatus including an irradiation unit capable of irradiating a sheet with at least either visible light or ultraviolet light, and an acquisition unit which acquires a spectral reflectance for each of a plurality of wavelength regions based on light reflected by the sheet, a spectral reflectance acquired by the acquisition unit when the sheet is irradiated with the visible light is stored in a memory unit. A storing unit stores, in the memory unit, a spectral reflectance in a wavelength region shorter than a predetermined wavelength among spectral reflectances acquired by the acquisition unit when the sheet is irradiated with both the visible light and the ultraviolet light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.