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Color Quality Management of Printing Enterprises

       For packaging and printing enterprises, while formulating the color quality standards of finished printing products, they must also formulate the quality standards of printing materials (ink and paper) and carry out effective control in order to achieve the required printing quality.Color Quality Management of Printing Enterprises

Color Quality Management of Printing Enterprises

        The same control standard as that of the print user can be adopted for the qualification tolerance range of the print color and paper; Color Quality Management of Printing Enterprises

        Or, formulate relatively strict control standards according to the production conditions of printing enterprises.Color Quality Management of Printing Enterprises

        The standard chromaticity coordinate value of the ink can be the same as the specified target color of the print; Alternatively, use the automatic ink scraping prototype to measure the ink color sample obtained after scraping the specified ink.Color Quality Management of Printing Enterprises

        And the data obtained is used as the standard chromaticity coordinate value of the ink. In this way, the incoming ink can be easily detected and controlled without printing.Color Quality Management of Printing Enterprises

       The color difference of printed matter is the comprehensive performance of all influencing factors. Therefore, for the quality control of incoming ink, it is necessary to formulate a relatively strict qualification tolerance range.Color Quality Management of Printing Enterprises

     So that the printed matter obtained by integrating the color difference changes caused by other influencing factors after printing can meet the final quality requirements.Color Quality Management of Printing Enterprises

Formulation of standard chromaticity value of target color

        Trademark color quality management uses spectrophotometer cm2600d and color data processing system. Its minimum measurement diameter is 3mm; Color Quality Management of Printing Enterprises

       Therefore, the actual measured area of the measured color on the cigarette trademark must be greater than 3mm to be meaningful;Color Quality Management of Printing Enterprises

         It must be greater than 5mm to facilitate the operator’s detection and obtain good repetition accuracy.Color Quality Management of Printing Enterprises

★ test color blocks with a diameter of 5-8mm shall be printed on all colors to be controlled where the cigarette trademark is covered after rolling and does not affect the sizing.Color Quality Management of Printing Enterprises

★ sample 20-100 or more proofed trademarks. After the standard formulation Department observes with human eyes, the proofed trademarks that meet the design color requirements and the difference between various sheets is within the width of human eyes are used as standard color samples.Color Quality Management of Printing Enterprises

★ measure and calculate the chromaticity of each color of the above standard color sample, and calculate the average value of L *, a *, b * as the standard chromaticity value of the color in the trademark; Color Quality Management of Printing Enterprises

        Or use the average value measurement in the target color setting function in the color quality control software to formulate the standard chromaticity value.Color Quality Management of Printing Enterprises

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