Application of Colorimeter in Paper Industry

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2023-08-10

Application of Colorimeter in Paper Industry

The papermaking industry has strict requirements for the color of paper products. 

If there is a significant color difference between the finished product and the standard sample, the buyer's perception will be significantly reduced. 

Maintaining the correct color of paper can enhance visual appeal, shape product image, and attract buyers' interest. 

A good paper-making enterprise should have qualified control over the color of paper. 

Colorimeter, spectrophotometer, color cat and other products of Shenzhen Caidawei Technology Co., Ltd can provide you with color management protection.

Relying solely on human visual identification of color difference is easily influenced by the environment. 

Using a colorimeter to measure can objectively evaluate as much as possible, while quantifying the depth and magnitude of color difference. 

This allows both manufacturers and customers to easily and quickly understand the color information of paper, avoiding unnecessary disputes and losses. 

This is currently the most popular method in the world's paper industry. 

At present, the formulas for measuring color difference using colorimeters include ANLAB, CIELAB, CMC, Hunter, etc. 

Shenzhen Caidawei Technology Co., Ltd uses the CIELAB color difference formula to measure, calculate, and evaluate the color difference of paper products, 

and effectively prevent and control color difference phenomena.

In the process of paper copying, color measurement is very important. 

All colors can be described using three attributes: brightness, hue, and saturation (color intensity), which can be represented by a three-dimensional spatial value. 

Brightness (L) represents the brightness of an object's surface, with white having the highest brightness, black having the lowest brightness, 

and gray having a brightness between white and black; Bright colors have higher brightness, while darker colors have lower brightness. 

Hue (H) is the characteristic of distinguishing colors from each other, manifested as various visual tones. 

Saturation (C) refers to the purity of a color and is related to its vividness. 

In the process of color grading and dyeing paper, detecting these three indicators can achieve the effect of preventing and controlling color difference.

Due to the uneven color space, it is difficult to calculate color difference. 

Therefore, people focus on finding and establishing a uniform color space 

and its corresponding color difference formula to maintain consistency with human visual perception, making the calculation of color difference simple and clear. 

The △ E value of the CIELAB color difference formula we have chosen is obtained from the functional formula of the color difference (three values related to color attributes) △ L, △ a, and △ b. 

The color difference values of these three different attributes are always uneven, so it is necessary to find a color difference formula that is consistent with visual perception.