Application of Colorimeter in Online Printing 

Colorimeters are more and more widely used in printing. Whether in screen printing or other printing methods, colorimeters, especially colorimeters, have become essential equipment in the printing process. Colorimeters can be applied to screen printing. In many fields. The most important is ink color matching, color management and printing quality inspection.

The color management

The colorimeteris the key equipment of modern computer color matching technology. The operator uses it to calculate the ink formula according to the color sample given by the customer. First, use a caliber 8mm portable colorimeter to measure the color sample. Obtain the segmented spectral data of the color sample. Then use the software to calculate the color data of the color samples. Then according to the ink and paper data provided. Obtain the result of preparing the color sample. Ink distribution is a delicate work, after obtaining the chromaticity value of the sample ink. The chromaticity value and the information of various raw materials used for matching ink should be input into the color matching software. Then use the ratio of various inks given by the software to test, and carry out repeated tests until the matching ink color and the original ink color are within a certain color difference range. The colorimeteris used several times during this process. Therefore, it is the key equipment for accurate ink dispensing. The colorimeteris used many times. So it is the key equipment for accurate ink dispensing.

The 3C color management

“3C” in color management. That is calibration. Characterization and conversion are all inseparable from the use of colorimeters. Printing color management mainly involves displays. Scanners, printers and printing presses and other equipment. In the color management of these devices. The first step is calibration. For example, the calibration of the monitor is to send the color signal to the screen first. At the same time, use a colorimeter to measure the output of the display. Then modify the response through software, adjust and correct gamma, white point, black point and color balance to ensure that the next step of device characterization is carried out correctly. The picture below is a pocket colorimeter that is often used in monitor calibration.

ATO Colorimeter.org Pocket Colorimeter

Of course, Characterization and color conversion also use colorimeters. The basic process still uses the standard color target output by the colorimeter measuring equipment (whether it is a real color target or an electronic color target). Obtain the standard color value corresponding to the color value of the original color target. Generate a certain characteristic file (characterization process) Or establish a specific conversion relationship (color conversion).

The quality control of ink products

Although the screen printing plate-making speed is fast. The cost is relatively low. But many screen formats are larger. The quality of printed products varies widely. Therefore, strict quality control must be taken. Currently. With the promotion and use of online detection. Print quality control is becoming more and more convenient. Its core equipment is still the use of a colorimeter. The following picture is of a color colorimeter. Can scan the control bar on the printed product. Get its lab chromaticity value. After comparing with the standard value in the computer, the adjustment information can be calculated and fed back to the printing press. Color accuracy is becoming more and more important in printing. To improve the accuracy of color reproduction. There is still a lot of work to do. A very important piece of equipment running through it is a colorimeter. Especially colorimeters. Of course, Correct use of a colorimeteris a prerequisite for accurate data. No matter the density meter or the colorimeter. The angle must be measured when using. Standard light source. Field of view angle. Measurement aperture, etc. for accurate selection. Of course, regular calibration cannot be forgotten. Calibration is also required if the temperature changes significantly.

Color Spectrophotometer

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