1. Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your Xprinter 4 Inch Thermal Label Printer (XP-420B / D108B series). This versatile printer is designed for both label and receipt printing, offering high-speed and high-resolution output for various commercial applications.
Key features include:
- 4-inch (108mm) print width
- 203 dpi resolution
- High print speed (Max: 152mm/s, Min: 50.8mm/s)
- Multiple connectivity options: USB, Bluetooth, WiFi, Ethernet
- No ink or toner required


2. Setup
2.1 Unboxing and Package Contents
Carefully unpack your printer and check the contents against the list below. If any items are missing or damaged, please contact your vendor.

Typical package contents:
- Xprinter Thermal Label Printer
- Power Adapter and Power Cord
- USB Cable
- Driver CD (or download link)
- Quick Start Guide (or full manual link)
2.2 Connecting the Printer
Your Xprinter supports various connection methods depending on the model purchased:
- USB: Connects to Windows and macOS computers.
- Bluetooth: Connects to Android and iOS mobile devices.
- Ethernet (LAN): Connects to network for Windows and iOS.
- WiFi: Connects wirelessly for Windows and iOS.
Connect the power adapter to the printer and plug it into a power outlet. Use the appropriate cable (USB or Ethernet) to connect the printer to your computer or network, or pair via Bluetooth/WiFi for wireless models.

2.3 Driver and Software Installation
Before using the printer, you need to install the necessary drivers and software. You can find these on the provided CD or download them from the official Xprinter website:
- Drivers and Manuals: https://www.xprintertech.com/pos-printer-user-manual
- Android Application (for Bluetooth models): https://www.xprintertech.com/xprinter-application
- iOS Application (for Bluetooth models): Search for "Xprinter" in the iOS App Store.
Follow the on-screen instructions for installation. If you encounter any difficulties, refer to the detailed user manual available on the Xprinter website or contact support.
2.4 Loading Paper
This printer uses thermal label paper. Ensure you load the paper correctly for optimal printing performance.
- Open the top cover of the printer.
- Place the thermal label roll into the paper compartment, ensuring the printable side is facing up.
- Feed the leading edge of the paper through the print mechanism until it is aligned with the print head.
- Close the top cover securely. The printer will automatically detect and calibrate the label size.

3. Operating Instructions
3.1 Printing Labels
Once the printer is connected and drivers are installed, you can begin printing. The printer is compatible with various label design software and shipping platforms.
- Open your label design software or the application from which you wish to print (e.g., shipping platform, barcode generator).
- Ensure the Xprinter is selected as your default printer.
- Configure your label settings (size, orientation, content) to match your thermal labels. The printer supports a maximum paper width of 108mm (4 inches).
- Initiate the print command from your software.


3.2 Mobile Printing (Bluetooth/WiFi Models)
For Bluetooth or WiFi enabled models, you can print directly from your mobile device:
- Download and install the Xprinter application from the respective app store (Google Play for Android, Apple App Store for iOS).
- Ensure your printer is powered on and in pairing mode (refer to the specific model's quick start guide if needed).
- Open the Xprinter app on your mobile device and follow the instructions to connect to your printer via Bluetooth or WiFi.
- Select the label or receipt you wish to print from the app and send the print command.
4. Maintenance
Regular maintenance ensures the longevity and optimal performance of your thermal printer.
4.1 Cleaning the Print Head
The thermal print head is a critical component. Clean it regularly to prevent print quality issues.
- Turn off the printer and disconnect the power cord.
- Open the top cover to access the print head.
- Gently wipe the print head with a lint-free cloth moistened with isopropyl alcohol.
- Allow the print head to dry completely before closing the cover and turning on the printer.
4.2 General Cleaning
Wipe the exterior of the printer with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the printer's surface.
5. Troubleshooting
If you encounter problems with your printer, refer to the following common issues and solutions. For more detailed troubleshooting, consult the full user manual on the Xprinter website.
5.1 No Power
- Ensure the power cord is securely connected to both the printer and a working power outlet.
- Check the power switch on the rear of the printer is in the 'ON' position.
5.2 Poor Print Quality
- Check if the thermal label paper is loaded correctly and is of good quality.
- Clean the thermal print head as described in the Maintenance section.
- Adjust print density settings in your printer driver or software.
5.3 Paper Jam
- Turn off the printer and open the top cover.
- Carefully remove any jammed paper or debris from the paper path.
- Ensure the paper roll is properly seated and aligned before closing the cover and restarting.
5.4 Connectivity Issues
- USB: Ensure the USB cable is securely connected and the correct driver is installed.
- Bluetooth: Verify Bluetooth is enabled on both devices and they are paired. Check the Xprinter app for connection status.
- Ethernet/WiFi: Ensure the printer is connected to the network and has a valid IP address. Check network settings on your computer/device.
6. Specifications
| Feature | Specification |
|---|---|
| Brand Name | HZTZ (Xprinter) |
| Type | Thermal Printer |
| Use | Barcode Printer |
| Max. Resolution | 203dpi |
| Black Print Speed | Max: 152mm/s, Min: 50.8mm/s |
| Color Print Speed | NONE (Monochrome Thermal) |
| Max Paper Size | 108mm (4 inches) |
| Consumable Type | Label Paper |
| Interface Type | USB, Bluetooth, WiFi, Ethernet (depending on model) |
| Internal Memory | 4 MB |
| Voltage | 100-240V |
| Size | 400*230*185mm (approximate) |
| Weight | 1.5kg |
| Certification | CE |
| Font and Barcode Rotation | 0°, 90°, 180°, 270° |
| Operating Environment | 5 ~ 40℃, 25 ~ 85% non-condensing |
| Storage Environment | -40 ~ 60℃, 10 ~ 90% non-condensing |

7. Warranty and Support
Your Xprinter Thermal Label Printer comes with the manufacturer's "Shop's Three Guarantees" for peace of mind. For specific warranty details, please refer to the documentation included with your product or contact the seller.
For further assistance, technical support, or to download the latest drivers and manuals, please visit the official Xprinter website: www.xprintertech.com.
If you require personalized support, please contact the Howell Electro Store directly.
8. User Tips
- Label Size: The printer is designed for 4-inch wide labels (up to 108mm). While it can print various lengths, ensure your labels fit within the printer's internal roll compartment or are fed externally if using larger rolls.
- Software Compatibility: The printer works with standard label design software and is compatible with many popular shipping platforms. If you're having trouble, check for specific integration guides on the Xprinter website or the platform's support pages.
- Printing on Specialty Materials: This is a thermal label printer, primarily for standard thermal labels and receipts. It does not support color printing or specialized materials like vinyl transfer paper for non-label applications (e.g., ice cream tubs, jewelry tags) unless they are specifically designed as thermal labels within the supported dimensions.
- Mobile App: For Bluetooth/WiFi models, using the dedicated Xprinter mobile app is often the easiest way to print from smartphones or tablets.





