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Download and install the library EPSON OPOS ADK (this library is needed to print on an Epson printer using C# code) | I have an EPSON TM-T20X receipt printer
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 Download and install the library EPSON OPOS ADK (this library is needed to print on an Epson printer using C# code) | I have an EPSON TM-T20X receipt printer 
last updated: 5 Augusta 2025
Question:
Why download and install the EPSON OPOS ADK library?
Answer:
Once installed, we can write a program on C# that will print on a Epson printer.
In C# code, we will use namespace Windows.Devices.PointOfService ...
Note! You must have the printer driver installed. If you don't, then need to download and install the driver for the EPSON printer ...
 
Step 1. Download the EPSON OPOS ADK library for my printer EPSON TM-T20X
To download the EPSON OPOS ADK library, you need to know the printer model exactly.
EPSON OPOS ADK is downloaded for a specific printer model and installed on the Windows system.
My printer has a model of EPSON TM-T20X
Here are all the programs for my printer EPSON TM-T20X:
https://support.epson.net/...

I'm downloading EPSON OPOS ADK for my printer and this file will be downloaded: EPSON_OPOS_ADK_V3.00ER27.exe
Step 2. Install the library EPSON OPOS ADK
I run the file EPSON_OPOS_ADK_V3.00ER27.exe
The installation went well:
 
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Adding a receipt EPSON printer to the EPSON OPOS ADK program
 
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  Объявления  
  Объявления  
 
• Download and install Microsoft Visual Studio to write UWP applications on a computer with the Windows system
• Open Visual Studio (to write the project UWP)
• Creating a new C# UWP app on a Windows computer
Web API requests
• Write a UWP C# program that sends a Web API GET request to a local server
Receipt printer (writing a C# program for printing)
• Download and install the library EPSON OPOS ADK (this library is needed to print on an Epson printer using C# code) | I have an EPSON TM-T20X receipt printer
• Adding a receipt EPSON printer to the EPSON OPOS ADK program
• We write a program in UWP C# that prints text on a receipt EPSON printer (to find a receipt printer I use the C# code PointOfService.PosPrinter.GetDeviceSelector ...)
• Write a program in UWP C# that prints text and images on a receipt EPSON printer
• Write a program in UWP C# that prints an image of any size on a receipt EPSON POS printer (during execution, change the width of the picture = the width of the paper)
• Write a program in UWP C# that prints a qr code on a receipt EPSON printer
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