QR Code is one of very few barcode types that allow encoding of Kanji and Kana.

Statistics

• The symbol size of the QR Code is 21 x 21 modules to 177 x 177 modules corresponding to Version 1-40, increasing in steps of 4.
• The numeric data is maximum capacity 7089 digits.
• The alphanumeric data maximum capacity is 4296 characters.
• The byte data maximum capacity is 2953 bytes.
• The Kanji data maximum capacity is 1817 characters.

Error Correction Level

This barcode type uses a Reed-Solomon error detection and correction scheme. There are four levels of error correction, each with increasing amount of error recover.

• "L" - 7% error recovery
• "M" - 15% error recovery
• "Q" - 25% error recovery
• "H" - 30% error recovery

If using the 1D/2D Standard or 1D/2D Professional editions, 2D writes are supported for QR Code using an external application. Typically, this can be done using the ImagXpress control or by writing to a Printer Device Context. The external application will set the barcode writing parameters and make a call to the Create method. The output image will then be available in the image properties.

Included features to use for this functionality are:

• BarcodeData - Barcode value returned as an array of bytes.
• RowsAndColumns - This value is used to set the number of rows, which will always be equal to the number of columns, as all QR Code barcodes are square.
• RowsAndColumnsCreated - The number of rows and columns created.
• QRCodeSizes enumeration - The range of possible values to use with RowsAndColumns property.
• ErrorCorrectionLevel - This value is used for the amount of error correction to add to a barcode which supports selected error correction level.
• QRCodeErrorCorrectionLevel enumeration - The range of possible values to use with ErrorCorrectionLevel property.