A color measurement device and method for beam laser paper and printed matter
A technology of color measurement and printed matter, applied in the field of color measurement devices, can solve problems such as measurement, operation error, and measurement result impact, and achieve the effect of measurement specification, small error, and convenient measurement
Active Publication Date: 2018-01-26
BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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Problems solved by technology
In the process of using the existing method, there will be man-made measurement and operation errors, such as different positions of the instrument and the test sample, and the fixed position of the measurement is located at different periodic positions of the paper light column, etc., which will cause great influence on the measurement results. influences
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Embodiment Construction
[0036] The present invention needs to fix the light column laser paper or laser print or color measuring instrument, and select the uniform color area of the color to be measured on the printed matter layout, and the measurement system of the present invention precisely controls the fixed position of the color measuring instrument on the sample to be tested, and passes the measuring device Rotate the sample to be tested or the color measuring instrument, change the relative angle between the sample to be tested and the color measuring instrument, collect the chromaticity values at four angles of 0°, 45°, 90° and 135° at the same position on the printed matter and calculate the arithmetic The average value, giving the chromaticity value of the color at that location of the print. The present invention has no limitation on the measurement position of the sample to be tested, no limitation on the starting angle of measurement, and no strict limitation on the relative included ...
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The invention relates to a color measuring apparatus and method of light column laser paper and presswork. The apparatus is mainly composed of a position sensor, a color measuring instrument, a control execution device, a measuring platform and a computer; the color measuring instrument is arranged above the measuring platform; the color measuring instrument and the control execution device are connected with the computer; the control execution device is connected with the color measuring instrument or the measuring platform; the control execution device can drive the color measuring instrument or the measuring platform to rotate around a fixing point or a fixing position; and the position sensor is arranged above the color measuring instrument and is connected with the color measuring instrument and the computer. With the color measuring apparatus and method of the invention adopted, the problems of the uncertainty of measured values and man-made error can be solved, and automatic measurement can be realized. The color measuring apparatus and method have the advantages of convenient operation, rapid measurement, standard measurement and small error.
Description
technical field [0001] The invention relates to a color measurement device and method for light column laser paper and printed matter. Through the special laser paper and printed matter color measurement device built, the color measurement instrument (or color measurement platform) is rotated to change the relative angle between the color measurement instrument and the sample to be tested, and the color chromaticity value is measured at the designated position of the sample to be tested; Then take the arithmetic mean value of the chromaticity values collected at fixed positions and different angles on the laser printed matter, which represents the chromaticity value of the color at the position of the sample to be tested; at the same time, this method can also be used for laser printed matter standard samples and test samples Color measurement, so as to evaluate and control the color quality of printed matter. Background technique [0002] The bright rainbow effect of lig...
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IPC IPC(8): G01J3/46G01J3/50
CPCG01J3/46G01J3/50G01J2003/467
Inventor 黄敏李泽阳史春洁崔桂华刘浩学
Owner BEIJING INSTITUTE OF GRAPHIC COMMUNICATION