1. Introduction
Thank you for choosing the Rongta RP420 Thermal Shipping Label Printer. This manual provides essential information for setting up, operating, and maintaining your printer to ensure optimal performance. The RP420 is designed for efficient and reliable printing of 4x6 inch thermal labels, ideal for shipping, warehousing, and various business needs.
2. Contenu du colis
Veuillez vérifier que le colis contient les éléments suivants :
- 1 x Rongta RP420 Label Printer
- 1 x adaptateur secteur
- 1 x câble d'alimentation
- 1 câble USB 2.0
- 1 x USB Disk (with drivers)
- 1 x USB-C to USB Adapter
- 1 x Guide de l'utilisateur
- 1 x Operation Instruction Card
- 1 x Thermal Labels (100 sheets, 4x6 inch)
Figure 1: Rongta RP420 printer with included accessories including power adapter, cables, USB disk, and labels.
3. Installation
3.1 Imprimante terminéeview
The Rongta RP420 features a compact design with essential ports and buttons for easy operation.
- Devant View: Paper outlet.
- Haut View: Paper feed button, LED indicator.
- Arrière View: Power interface, USB interface, Power switch.
3.2 Chargement des étiquettes
- Assurez-vous que l'imprimante est hors tension.
- Ouvrez le capot supérieur de l'imprimante.
- Adjust the paper guides to match the width of your 4x6 inch thermal labels.
- Insert the stack of thermal labels into the rear paper slot, ensuring the printable side (adhesive side) faces upwards. The printer will automatically feed and align the first label.
- Fermez bien le capot supérieur.
Figure 2: Proper loading of 4x6 inch thermal labels into the printer.
3.3 Connexion d'alimentation
- Connect the power adapter to the printer's power interface.
- Branchez le câble d'alimentation dans une prise de courant appropriée.
- Turn on the printer using the power switch located at the rear. The LED indicator on top will illuminate.
3.4 Installation du pilote (pour PC)
- Insérez la clé USB fournie dans votre ordinateur.
- Locate and install the RP420 driver for your operating system (Windows/Mac).
- Connectez l'imprimante à votre ordinateur à l'aide du câble USB.
- Suivez les instructions à l’écran pour terminer l’installation.
3.5 Mobile App Installation (for Phone/Tablet)
- Download the "RTElabel" app from your device's app store (Google Play for Android, App Store for iOS).
- Ensure Bluetooth is enabled on your phone or tablet.
- Open the "RTElabel" app and follow the instructions to connect to the RP420 printer via Bluetooth.
Figure 3: Connection options for the RP420 printer, including USB for PC and Bluetooth for mobile devices.
4. Mode d'emploi
4.1 Printing from Phone/Tablet
- Ensure your phone/tablet is connected to the RP420 via Bluetooth using the "RTElabel" app.
- Within the app, select "New Label", "PDF Print", or "Image Print" based on your needs.
- Customize your label content, size, and other settings as desired.
- Appuyez sur le bouton « Imprimer » pour envoyer l'étiquette à l'imprimante.
Figure 4: The RTElabel app interface for creating and printing labels from a smartphone.
4.2 Impression depuis un PC
- Ensure the printer is connected to your PC via USB and the drivers are installed.
- Ouvrez le document ou l'étiquette file vous souhaitez imprimer sur votre ordinateur.
- Go to the print dialog (File > Imprimer).
- Select "RP4xx" (or similar, depending on driver installation) from the list of available printers.
- Ajustez les paramètres d'impression (par exemple, le format du papier, l'orientation) selon vos besoins.
- Cliquez sur « Imprimer » pour envoyer la tâche à l'imprimante.
4.3 Systèmes d'exploitation pris en charge
- Mobile: iOS, Android (via Bluetooth)
- Bureau: Windows (XP, Win7, Win8, Win10, Win11), Mac (10.13 or later), Linux (via USB cable)
Note: Laptops cannot connect via Bluetooth; only via USB cable.
Figure 5: The RP420 printer supports a wide range of operating systems for versatile use.
5. Entretien
5.1 Nettoyage de la tête d'impression
Regular cleaning of the print head ensures optimal print quality and extends the life of your printer. It is recommended to clean the print head after every 500 labels or when print quality degrades.
- Éteignez l'imprimante et débranchez le câble d'alimentation.
- Ouvrez le capot supérieur de l'imprimante.
- Utilisez un coton-tige légèrement dampened with 70% isopropyl alcohol to gently wipe the print head surface.
- Laissez la tête d'impression sécher complètement (environ 2 à 3 minutes) avant de fermer le couvercle et de mettre l'imprimante sous tension.
6. Dépannage
- L'imprimante ne répond pas : Ensure the power cable is securely connected and the printer is turned on. Check USB or Bluetooth connection status.
- Mauvaise qualité d'impression : Clean the print head. Ensure labels are loaded correctly with the printable side up. Check label quality.
- Étiquettes ne s'alimentant pas : Ensure labels are properly loaded and aligned with the paper guides. Check for any obstructions in the paper path.
- Problèmes de connexion Bluetooth : For phones/tablets, ensure Bluetooth is enabled and the "RTElabel" app is used for connection. Laptops require a USB cable for connection.
7. Spécifications
| Fonctionnalité | Description |
|---|---|
| Modèle | RP420 |
| Méthode d'impression | Thermique directe |
| Max Largeur d'impression | 4.25 pouces (108 mm) |
| Max Vitesse d'impression | 127 mm/s |
| Taille de l'étiquette | 4 inch x 6 inch (100mm x 152mm) |
| Interface | USB, Bluetooth |
| Systèmes d'exploitation pris en charge | iOS, Android, Windows, Mac, Linux |
| ASIN | B0FYDN5RY1 |
| Date de première disponibilité | 13 juin 2025 |
Figure 6: Standard 4x6 inch thermal label dimensions supported by the printer.
8. Garantie et assistance
8.1 Garantie
Rongta offers an extended warranty of 1 year with your order number. Please contact support@rongtatech.com to extend your warranty.
8.2 Assistance clientèle
For further assistance, please contact Rongta customer support:
- E-mail: support@rongtatech.com
- WhatsApp: +86 18150368963
- Temps disponible: Lun-ven 9h-5h (EST)
You can also scan the QR code on the operation instruction card to talk with customer support via WhatsApp.





