确定 Code 128 条码可用的最大宽度
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【中文标题】确定 Code 128 条码可用的最大宽度【英文标题】：Determining max width available for Code 128 barcode 【发布时间】：2019-04-30 19:40:09 【问题描述】：我正在寻找某种可用的公式来确定我可以在不大于给定宽度的 Code 128 条码上容纳多少数据。用例是一个印有条形码的腕带。
是否有最小条形所需的最小尺寸才能使所有内容都可见？是否有任何地方可用的大小比率（即“Z 占用的空间是 0 的 x 倍”）？我看到 Code 128 支持数字字符串的压缩。消除字母字符会带走更多数据，但这样做最终会得到更多相同宽度的数据吗？
编辑：随着数字字符串的压缩，解决方案是只测试 10、12、15 等字符串。我们决定使用 12，因为这对于我们的使用来说已经绰绰有余了，并且可以在 1 英寸的腕带上轻松扫描，每边留出 10% 的空间。如果有人有见解，我仍然对所要求的信息感兴趣。
【问题讨论】：
【参考方案1】：所有字符的相对宽度相等。代码 128C 允许您将两个数字放入一个字符中，但如果您需要混合和匹配数字和字母，则需要始终有两对或更多对连续的数字，以使切换字符的额外负担值得。
在一定高度之后，垂直尺寸无关紧要，具体取决于扫描仪。
字符的宽度与其可扫描性成正比，并取决于生成器软件、硬件和打印介质。
我以每英寸字符为单位测量密度，使用喷墨打印机每可扫描英寸可以获得大约 15½ 个字符。将它们包装得更密集，我怀疑我需要一台更好的打印机，也许还有一台更好的扫描仪。
这是一个 40 个字符的字符串，用 Code128B 编码，15.6 cpi（43 个字符，包括开始、检查和停止）。
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src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/Af//AAAAAAAAAQAAAAAAAAD/AAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAajUDAt82atYAAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/Af//AAABAAAAAAAAAAAAAAD/AAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAajkDAr7LFAwAAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/AQD/AAD/AAAAAAAAAAEAAAAAAAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAATU4CA7CME0sAAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/AQD/AAD/AAAAAQAAAAAAAAD/AAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAZjkDAtle3bIAAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/AQD/AAAAAAAAAAAAAP8AAAABAAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAARVICA/z3WM0AAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/ASL/AADeAAAA/gAAAAIAAAD+AAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAh6QEAZKdo54AAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/Af//AAABAAAAAAAAAP8AAAAAAAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAbjUDAlvFFR8AAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/AQD/AAAAAAAAAAAAAP8AAAAAAAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAARTkCAqx1lb4AAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/AQD/AAD/AAAAAQAAAAAAAAD/AAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAZjkDAtle3bIAAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/Af//AAABAAAA/wAAAAEAAAAAAAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAck4DAxY8F10AAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/Af//AAAAAAAAAAAAAAEAAAAAAAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAUUoCA+juoggAAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/AQD/AAD/AAAAAQAAAAAAAAD/AAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAZjkDAtle3bIAAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/Af//AAAAAAAAAQAAAAAAAAAAAAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAUU4CA1nljTgAAAAASUVORK5CYII=" width="4" height="30"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAACCAQAAADLaIVbAAAANUlEQVQIHQEqANX/Af//AAABAAAA/wAAAAEAAAAAAAAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAck4DAxY8F10AAAAASUVORK5CYII=" width="4" height="30">【讨论】：
谢谢，我最终做了一个试错路线，最终确定了 12 个字符。 15 在为空白留出空间后扫描有点不一致。 12 提供的值比需要的多得多，而且扫描起来并不困难 您最终使用的是 Code 128B 还是 Code 128C？【参考方案2】：@亚历克斯·德卡米洛，
Code 128 符号系统的 ISO/IEC 15417 规范定义了一个计算宽度的公式，该公式利用字符数、最窄元素的宽度和所需的静区来计算总宽度。您还可以将其与恒定宽度一起使用来计算最小元素的所需宽度等。不幸的是，我无法在规范之外找到该公式，因此我无法在不违反规范条款的情况下分享该公式，但您可以在此处获取规范：https://www.iso.org/standard/43896.html
特里·沃里克，微软
【讨论】：
谢谢，看来这正是我所希望的，但我不能仅仅因为好奇就购买那张纸。反复试验足以找到合适的宽度以上是关于确定 Code 128 条码可用的最大宽度的主要内容，如果未能解决你的问题，请参考以下文章