Cigar Paper Boxes With Ribbon Printing Enterprise Color Quality Management

Cigar Paper Boxes With Ribbon printing enterprise color quality management

 

For printing enterprises, the quality standards of printing materials (ink and paper) must be formulated and effectively controlled at the same time when the color quality standards of printed products are formulated.

 

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The color of the print and the tolerance range of the paper's conformity can be used to the same control standards as the print user; Or, according to the production conditions of printing enterprises to develop relatively strict control standards.

 

The standard chroma coordinate value of the printing ink can be used with the specified target color of the same standard chroma coordinate value; Or, the use of automatic ink scraping machine to the specified ink scraping sample after the ink color sample measurement data, the correct print output - HP color laser printer, as the standard chrominance coordinate value of the ink. In this way, the inks into the factory do not need to be printed on the machine, can be easily detected and controlled.

 

Printing color difference is the comprehensive performance of all influencing factors, so for the quality control of the inks, it is necessary to develop a relatively strict tolerance range of eligibility, so that after printing the color change caused by other influencing factors and obtained printing, in order to achieve the final quality requirements.

 

Target color standard chrominance value setting

(Cigarette) trademark color quality management using spectrophotometer CM2600d and color data processing system. Its minimum measuring diameter is 3mm; Therefore, the actual area measured on the cigarette label must be greater than 3mm in order to be meaningful; Must be greater than 5mm in order to facilitate the operator detection and obtain good repeat accuracy.

 

★ In the cigarette trademark roll is covered, and does not affect the sizing place to control all colors printed 5mm ~ 8mm diameter detection color block.

 

★ Sampling 20 ~ 100 or more proofing trademarks, after the standard setting department human eye visual observation, HP Color LaserJet CP2020 color laser printer series, in line with the design color requirements and the difference between the proof within the human eye width capacity of the proofing trademark as the standard color sample.

 

★ Chromaticity measurement and statistical calculation of each color of the above standard color sample, calculated L*, a*, b* average value as the trademark of the color standard chromaticity value; Or use the average value measurement in the target color setting function in the color quality control software to set the standard chroma value.

 

★ Repeat the above operations, for different trademarks and different colors to establish the relevant L*, a*, b* standard chroma values.

 

The setting of target color tolerance range

Tolerance range was developed using ΔECMC conformity determination method:

 

★ It is suggested that l:c weighting coefficient should be 1. 4:1;

 

★ According to the product quality requirements to develop a reasonable commercial index cf value (color quality requirements of different colors only need to develop the same cf value) as the final color quality tolerance range.

 

Production technology

In general, process technicians always want to maintain constant process parameters and technical methods for production. But in the actual production process, because of one or another factors change, it is often difficult to achieve the ideal production conditions. Inks, in particular, cannot maintain the same level of quality from batch to batch, especially from batch to batch with long production dates, as manufacturers are restricted by the chemical and pigment industries. Therefore, before printing, must according to the material changes and other actual production conditions, Guangzhou HP 8000 black and white laser printer, advertising company color laser printer, on the basis of the original process standards to make appropriate adjustments to the specific process parameters, in order to ensure that different batches of printing products obtain satisfactory and stable color quality.

 

Example 1: When the ink color saturation is slightly higher than the standard, and a new plate with a relatively deep notch is used, the ink viscosity should be reduced or the printing speed should be increased to adjust, and the thickness of the ink layer should be reduced to reduce the color saturation of the print accordingly.