The embodiment of the bar code on the trademark is used as the information identification of the product, and the bar code design should be easy to identify, elegant, and low cost. There are three main forms of embossment on the goods: they are printed on the packaging paper of the goods or directly printed on the packaging container; and the products are made of tags, such as eyeglasses, jewelry, handicrafts, and clothing, which are inconvenient for printing barcodes. This way; for cosmetics, household appliances, washing products, etc. are generally printed on the stickers on the bar code, and then paste the stickers on the goods.
1 Bar Code Color Design The bar code printed on the product is an important symbol of product identity. The basic requirement is that its color must be clearly different from the background color in order to facilitate bar code reader recognition. According to EAN's specifications, bar codes and empty colors must have the greatest contrast. Barcode printing and quality control texts/Wang Qi Wang Suling background colors are mostly white, yellow, beige, etc., and strip colors are black, dark brown, and dark green. , dark blue, etc. This is usually the safest bar code color design. Bar code readers generally use red light sources from 630 nm to 700 nm, and the red light has a high reflectance in red and is mixed with the strong reflected light of the background color. Therefore, red cannot be used as a stripe. If the printing paper is aluminized, akina or laser paper, directly printing a barcode on it will affect the recognition due to the strong gloss of the paper itself. Therefore, it is necessary to first print a layer of white ink or other on the glossy surface. Light color ink before you can print barcodes on light colors. For transparent or semi-transparent printed carriers, the same color as the contents should be disabled for stripe color, so as to avoid reducing the stripe contrast and affecting recognition. In this case, a background color may be printed before the printed stripe color, so as to be isolated from the content color for easy identification. As a designer who ignores the color contrast in the design, designing the bar code on a deep background will make the bar code difficult to identify; if a dark bar code printing area is designed on an originally light background, A printing process not only does not work well, but also increases printing costs. In addition, when the color of the decor design conflicts with the color of the barcode, the color of the barcode should be protected first.
2 Barcode size design EAN has a clear definition of the bar code size, but also can be changed within a certain range, the bar code size design is actually to determine the bar code magnification factor M. Magnification factor refers to the bar code design size and bar code The ratio of the standard size.
Taking the commonly used EAN-13 code as an example, its standard size is 37.29mm long and 26.26mm high. According to the EAN specification, the bar code has a minimum magnification of 0.80 and a maximum of 2.00. Therefore, the EAN-13 code has The marking size is only 74.58mm to 29.83mm long, and the height can only be changed from 52.52mm to 21.00mm. Bar codes with different amplification factors have different dimensional error requirements. The smaller the amplification factor, the stricter the dimensional error requirements. Many companies are always unable to guarantee the quality of barcodes with a magnification factor of 0.85 or below. Therefore, it is recommended that companies adopt a barcode size standard with a magnification factor of 1.0 or higher.
In the printable area of ​​the barcode, if the height is not enough, it can be solved by a method that does not reduce the magnification factor of the barcode, but only cuts out a portion of the stripe height properly during the printing process, so as not to affect the scanning and reading.
In short, when designing product bar code size, it is necessary to consider the size of the packaging area of ​​the product, ensure the coordination with the decoration effect, and also take care of the actual printing conditions of the printing company.
3 Position of bar code design The position design of the bar code should meet the following conditions: It does not affect the overall packaging effect of the product, it is easy to be found, the bar code is not deformed, and it is easy to read and operate. The preferred position of the bar code mark is the right side of the main display surface of the product package, followed by the plane connected with the main display surface of the product package, and may also be placed on the back surface of the main display surface of the product package.