The figures of the lines of thickness
Code Apparel Accessories way of bar code, one lines and blank mode of combination come, show different word each by a lot of thickness. Most bar code specifications all have thick and two kinds of detailed lines only, but some bar code specifications use to the lines of more than two kinds of different thickness.
l Fixed or variable length
Mean the length of the materials included in the bar code is fixed or variable, because some bar code specifications are limited to the relation of one’s own structure, can only use the materials such as UPC yard, EAN yard of the fixed length.
l Width of the detailed lines
Mean the detailed lines and blank width in bar code, is usually all detailed lines and blank average in a certain bar code, and the unit which it uses is usually mil (1?? inches) .
l Density
Mean in one fixed length can say word yuans of figuring, for example bar code specification density of A higher than bar code specification density of B, express when the density value of the two is the same Plastic zipper , in the same length, word yuan that the bar code A can hold more.
l Self-examination
It mean a certain the bar code specifications for wrong ability for oneself,will because print each by defects little that have, and may make a word yuan judge by accident and become another word yuan. There is ” self-examination “ The bar code specification of ability, does not mostly have a hard and fast rule that use ” The check-up yard “ ,Such as 39 yards. There is no bar code specification of the ability of ‘ self-examination ‘, mostly have settlement of the ‘ check-up yard ‘ in using, for instance EAN yard, UPC yard.
b) Important yard of production times made
Bar code Metal zipper, ” ID card ” that we can say it is the goods .
? There are two major kinds of bar codes of the goods: E A N bar code and U P C bar code, what our country uses at present are mostly E A N bar codes. The standard edition of E A N bar code has 1 3 identification figures, and shorten edition and have 8 identification figures only. In 13 digits of the standard edition, the top several is made up of prefix yard and manufacturer’s code, the prefix yard is encoded the association to manage and assign in unison by international articles. Prefix of our country yard 690-691-692, Hong Kong 489, Taiwan 471,etc., to distinguish goods producing area have function greatly this. Meanwhile, the difference of the commodity price was discerned by different codes, the goods of different prices can’t use the same code. So, while designing the code, must guarantee the uniqueness of the bar code. The goods have used the advantage of the bar code not only prevents imitating, protect consumers’ interests, and has improved the settlement tempo and accuracy Pullers bought after the goods, can reduce the cost of goods, increase benefit.
? Goods code principle