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US 10,473,527 B2Granted
Measuring device and measuring method
AssigneeSeiko Epson Corporation
InventorTsugio Gomi
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AssigneeSeiko Epson Corporation
InventorTsugio Gomi
Estimating the term…
A measuring device is a measuring device that performs colorimetry of an evaluation patch formed on a medium and a paper white patch that is a portion exposed by the medium. The measuring device has a light source portion that irradiates the medium with an illumination light, a measurement portion that acquires an amount of light from the medium as a measurement value, a memory that holds a paper white standard value that is a reference measurement value of the paper white patch, and a colorimetry unit that corrects a measurement value of the evaluation patch based on the measurement value of the paper white patch and the paper white standard value. Even in a case where a measurement position is changed, a reflectance of the evaluation patch is accurately calculated and a chromaticity of the evaluation patch can be accurately acquired.
A measuring device that measures colors of an evaluation patch formed in a measuring object and a reference patch which is a portion that the measuring object is exposed, the device comprising:
A measuring method of a measuring device having a light source that irradiates a measuring object having an evaluation patch and a reference patch with an illumination light, a measurement portion that acquires an amount of the illumination light reflected by the measuring object as a measurement value, a carriage on which the light source and the measurement portion are mounted, and which is movable relative to the measuring object, a storage portion that holds a standard value, and a correction portion that corrects a measurement value of the evaluation patch, the method comprising:
Dependencies are inferred from the claim text.