Print Direct: Direct Printing from Desktop & Mobile

Odoo Print Direct streamlines printing by sending commands directly to printers like Network, ZPL, PDF, WiFi, Bluetooth, and USB devices without downloading files, ensuring fast and efficient output.

Sometimes, users may face problems such as:

• The printer is not detected
• The host machine does not appear in Odoo
• An Android device cannot detect a USB printer

This guide explains the common causes and troubleshooting steps.

If the Android Direct Print app cannot detect a USB printer, check the following points.

1. Open Settings on the Android device.
2. Go to Developer Options.
3. Enable USB Debugging.

If Developer Options are not visible:
1. Open Settings.
2. Go to About Phone.
3. Tap Build Number several times until Developer Mode is enabled.

Please make sure of the following:

• The device supports USB OTG.
• The OTG adapter is connected properly.
• The printer is powered ON.
• After connecting the printer, reopen the Print Direct application and scan again.

If both the host machine and printers are not visible in Odoo, the issue is usually related to WebSocket or longpolling configuration.

Print Direct application communicates with Odoo using real-time communication channels such as WebSocket.

If this communication is not working properly, Odoo will not detect the host machine or the available printers.

1. Open Odoo in your browser.
2. Press F12 to open Developer Tools.
3. Go to the Network tab.
4. Filter by WS (WebSocket).

You should see a connection similar to: /websocket
The status should display: 101 Switching Protocols

This means that the WebSocket connection has been successfully established.

Open the Console tab in Developer Tools and run the following command:

new WebSocket((location.protocol === ‘https:’ ? ‘wss://’ : ‘ws://’) + location.host + ‘/websocket’)

If WebSocket is working, the connection will open without errors.
If there is a configuration issue, the console may show connection errors.

Ensure Odoo is started with proxy mode enabled.

Add the following configuration in the Odoo configuration file:
proxy_mode = True
Then start Odoo with a gevent port:
–gevent-port=9000

This enables Odoo to handle WebSocket communication required for direct
printing.

In some cases, printers must be configured using a Raw or Generic driver so direct printing can work properly.

Step 1 – Go to Control Panel → Add Printers
https://webkul.chatwhizz.com/share/screenshot/65f80e69cdaeae108327a329

Step 2 – Continue manual setup if no printers are listed
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Step 3 – Add the printer manually
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Step 4 – Select the printer (example shown for Zebra printer)
https://webkul.chatwhizz.com/share/screenshot/65f80f7d7c85030ffcda8023

Step 5 – Select Manufacturer: Generic and Printer: Generic / Text Only
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Step 6 – Provide a name for the printer
https://webkul.chatwhizz.com/share/screenshot/65f810837c85030ffcda8294

If you receive an error related to Ghostscript while printing, install the open source Ghostscript application from the official website.

Download from: https://www.ghostscript.com/releases/gsdnld.html

Install the application and restart the Print Direct Desktop Application. See below image for reference.

Some printers might not work with Ghostscript, you can use third-party apps like Foxit Reader or Sumatra PDF that can support your specific printer driver.

Steps:
1. Proceed with downloading and installing the Foxit Reader Application on
your PC.
Visit: https://www.foxit.com/downloads

2. Press (Ctrl + Shift + T), a window will open, specify the path of Foxit
Reader.

3. Open the Print Direct PC(Desktop) Application and enable/use Other Reader for printing PDF(the icon on the Top Right of the Desktop Application should be darkened once enabled).

And all set, next time when you print any PDF file, it will use this third-party application.

Your configuration settings are stored on your desktop.

If you face any issue with login or fetching printers. Close the Print Direct application, and navigate to the corresponding folder:-

Windows: C:/Users//AppData/Local/Print Direct For Odoo
Linux: /home/users//.local/share/print-direct-for-odoo

Delete the folder from your computer.
OR
Triple click on the bin icon present on the bottom-right corner of the Print Direct Application.

Now, Restart the application.