ImageGear .NET - Updated
Patch Code
User Guide > How to Work with... > Barcodes > Supported Barcode Types > Patch Code

The barcode engine supports the following patch codes:

Patch Code Type

Barcode Value

Patch 1


Patch 2


Patch 3


Patch 4 / Toggle Patch


Patch 6


Patch T / Transfer Patch


To write a Patch Code, set the writer BarcodeType property to PatchCode, then set the writer BarcodeValue property to a value of 1 through 6.

Patch Codes require a quiet zone, which should be at least the width of 10 narrow bars. This means that if you set the MinimumBarWidth property to 5 pixels (narrow bar size), you should set the HorizontalWhiteSpace property to 50 pixels. There is no checksum for Patch Code.

The minimum bar width for Patch Codes is 5.

An example: