Generate Patch Code Barcodes in JavaScript

Generate Patch Code Barcodes Online: You can check the quality of Aspose.BarCode generation for PatchCode barcodes and view the results online.

Overview

Patch Code was developed by Kodak to support task management in automatic multi-page document scanning. These barcodes do not encode data; instead, they use a specific barcode pattern to indicate the action required. Aspose.BarCode for JavaScript via C++ supports six main Patch Code patterns and allows barcodes to be generated in two modes: as separate images for manual placement on pages or as a complete A4 or US Letter page with the desired resolution. Patch Code labels can be printed on all four sides of a document, but reading just one side is sufficient for successful scanning, even if pages are rotated.

If you need any clarifications, feel free to reach out Aspose Technical Support: ask your questions at Aspose.Barcode Forum or contact Aspose Paid Support Helpdesk.

Supported Patterns

Aspose.BarCode for JavaScript via C++ supports the main Patch Code set, which includes six patterns. The extended pattern set introduced later by Kodak is not yet standardized and is not supported by the library. The main patterns available are: Patch I, Patch II, Patch III, Patch IV, Patch T, and Patch VI.

The sample barcode labels below show the six basic Patch Code barcode types.

PatchCode Standards	Patch I	Patch II	Patch III	Patch IV	Patch T	Patch VI

The following code snippet demonstrates how to generate Patch Code barcodes using the available patterns.

How to get BarCodeInstance

// Generate PatchCode barcodes with custom font size and text
var gen = new BarCodeInstance.BarcodeGenerator("PatchCode", "Patch I");
gen.Parameters.Barcode.CodeTextParameters.FontMode = BarCodeInstance.FontMode.Manual;
gen.Parameters.Barcode.CodeTextParameters.Font.Size.Pixels = 20;

// Generate and display PatchCode I
gen.CodeText = "Patch I";
document.getElementById("img1").src = gen.GenerateBarCodeImage(); // Display barcode image

// Generate and display PatchCode II
gen.CodeText = "Patch II";
document.getElementById("img2").src = gen.GenerateBarCodeImage(); // Display barcode image

// Generate and display PatchCode III
gen.CodeText = "Patch III";
document.getElementById("img3").src = gen.GenerateBarCodeImage(); // Display barcode image

// Generate and display PatchCode IV
gen.CodeText = "Patch IV";
document.getElementById("img4").src = gen.GenerateBarCodeImage(); // Display barcode image

// Generate and display PatchCode T
gen.CodeText = "Patch T";
document.getElementById("imgt").src = gen.GenerateBarCodeImage(); // Display barcode image

// Generate and display PatchCode VI
gen.CodeText = "Patch VI";
document.getElementById("img6").src = gen.GenerateBarCodeImage(); // Display barcode image

gen.delete();

Generation Modes

Aspose.BarCode for JavaScript via C++ supports generating Patch Code barcodes as separate images or as A4/US Letter pages in portrait or landscape orientation. The library also allows adding an optional complementary QR Code for additional information needed in scanning tasks. Note that other barcode types cannot be set as complementary barcodes.

Setting Generation Format

To set the format for Patch Code barcodes, configure the PatchFormat property of the PatchCodeParameters class. The available options are:

• PatchOnly: Generates standalone Patch Code barcode images (default setting).
• A4: Outputs A4 pages in portrait orientation with Patch Code barcodes on the borders and an optional QR code in the center.
• A4_LANDSCAPE: Creates A4 pages in landscape orientation with Patch Code barcodes on the borders and an optional QR code in the center.
• US_Letter: Produces US Letter pages in portrait orientation with Patch Code barcodes on the borders and an optional QR code in the center.
• US_Letter_LANDSCAPE: Generates US Letter pages in landscape orientation with Patch Code barcodes on the borders and an optional QR code in the center.

Adding Complementary QR Code

To include a complementary QR code in a Patch Code barcode page (A4 or US Letter), set a text value in the ExtraBarcodeText property of the PatchCodeParameters class and set the Location property of the CodeTextParameters class to “CodeLocation.None”.

Illustrative Examples

Below are images of Patch Code barcode pages with and without a complementary QR code:

Complementary QR Code	Disabled	Enabled

How to get BarCodeInstance

// Create PatchCode barcodes with and without complimentary QR
var gen = new BarCodeInstance.BarcodeGenerator("PatchCode", "Patch I");

// Create a PatchCode barcode without complimentary QR
gen.Parameters.Barcode.PatchCode.PatchFormat = BarCodeInstance.PatchFormat.A4;
document.getElementById("img").src = gen.GenerateBarCodeImage(); // Display barcode image

// Create a PatchCode barcode with complimentary QR
gen.Parameters.Barcode.PatchCode.ExtraBarcodeText = "Aspose page extra info";
gen.Parameters.Barcode.CodeTextParameters.Location = BarCodeInstance.CodeLocation.None; // No code text display
document.getElementById("imgQr").src = gen.GenerateBarCodeImage(); // Display barcode image

gen.delete();