Codabar

Codabar Barcode

A self-checking 1D barcode encoding digits and a few special characters, historically used in libraries and blood banks.

Technisches Detail

Linear codabars encode data in parallel bars of varying width. EAN-13/UPC-A use 13/12 digits with a check digit (modulo 10 algorithm). Code 128 supports full ASCII with three character sets (A, B, C) and automatic set switching. Barcode scanners use laser or CCD sensors to read reflectance patterns — the quiet zone (blank space) before and after the barcode is critical for reliable scanning. Minimum bar width (X dimension) must be at least 0.25mm for reliable laser scanning.

Beispiel

```javascript
// Generate Code 128 barcode
const barcode = generateBarcode({
  data: 'PEASY-2026-001',
  format: 'CODE128',  // Also: EAN13, UPC-A, Code39
  width: 2,           // bar width in pixels
  height: 80,         // bar height
  displayValue: true, // show text below
});
```

Categories

Codabar

Technisches Detail

Beispiel

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