1. Introduction
This manual provides essential information for the proper use and care of your vretti 4x6 Thermal Direct Shipping Labels. These labels are designed for thermal printers and are suitable for a variety of shipping and e-commerce applications. Please read this manual thoroughly to ensure optimal performance and longevity of your labels.
2. Product Overview
2.1 Key Features
- Dimensions: Each label measures 4x6 inches.
- Quantity: Supplied in fan-fold stacks of 500 labels.
- Printing: Designed for direct thermal printing, supporting black print only.
- Durability: Features water-proof, oil-proof, and scratch-proof properties for reliable shipping.
- Adhesive: Equipped with a strong, premium-grade adhesive for secure attachment to various packaging surfaces.
- Eco-friendly: FSC RoHS approved paper and BPS free.

Image: A stack of vretti 4x6 thermal labels, with one label pulled forward to clearly show its 4-inch width and 6-inch height dimensions.

Image: Three labels illustrating their resistance to water, oil, and scratches, highlighting their durability.
2.2 Compatibility
These labels are compatible with a wide range of direct thermal printers and e-commerce platforms:
- Compatible Printers: vretti (420B, D463B, D465B, 410B), MUNBYN, Rollo, iDRPT, Polono, Jiose, K Comer, LabelRange, OFFNOVA, Phoemmo, and other direct thermal printers.
- Compatible Platforms: USPS, UPS, Shopify, Etsy, Amazon, eBay, PayPal, Poshmark, Depop, Mercari, and similar shipping and e-commerce services.
3. Setup
3.1 Loading Fan-Fold Labels
To load the fan-fold labels into your thermal printer, follow these general steps. Specific instructions may vary slightly depending on your printer model; always refer to your printer's manual for detailed guidance.
- Ensure your thermal printer is turned off or in standby mode.
- Place the stack of fan-fold labels directly behind your thermal printer. Ensure the labels are aligned neatly and the print side is facing up.
- Gently feed the first label into the printer's label input slot. The printer should automatically detect the label and adjust its position.
- Adjust the label guides within the printer to snugly fit the width of the 4x6 inch labels, preventing skewing during printing.
- Perform a test print to confirm correct loading and alignment.

Image: A thermal printer with a stack of fan-fold labels positioned behind it, illustrating how labels are fed into the printer.
4. Operating
4.1 Printing
Once the labels are loaded, you can proceed with printing your shipping labels. Ensure your printer drivers are correctly installed and configured for 4x6 inch labels.
- Software Settings: In your shipping software or printer settings, select the label size as 4x6 inches.
- Print Quality: For optimal print quality, ensure your printer's darkness and speed settings are appropriate for thermal direct labels.
- Black Print Only: These labels are designed for black printing only. Color printing is not supported.
4.2 Applying Labels
After printing, carefully peel the label from its backing and apply it to your package. The strong adhesive ensures a secure bond.
- Ensure the package surface is clean, dry, and free of dust or debris for best adhesion.
- Press firmly across the entire label to eliminate air bubbles and ensure full contact with the package.

Image: A visual guide demonstrating the process of peeling a thermal label from its backing and applying it smoothly onto a package.
5. Maintenance
5.1 Label Storage
Proper storage of your vretti thermal labels is crucial to maintain their quality and printability.
- Store labels in a cool, dry place, away from direct sunlight and excessive heat or humidity.
- Keep labels in their original packaging until ready for use to protect them from dust and environmental factors.
- Avoid exposing labels to chemicals or abrasive materials that could damage the thermal coating.
5.2 Printer Maintenance
Regular cleaning of your thermal printer's print head is recommended to ensure consistent print quality and prevent damage. Refer to your printer's user manual for specific cleaning instructions.
6. Troubleshooting
If you encounter issues while using your vretti thermal labels, consider the following common problems and solutions:
- Poor Print Quality (Faded, Splotchy, or Incomplete Prints):
- Solution: Check your printer's darkness settings and increase if necessary. Clean the thermal print head according to your printer's manual. Ensure labels are loaded correctly with the print side facing the print head.
- Labels Not Feeding or Jamming:
- Solution: Verify that the fan-fold labels are aligned properly and the label guides in the printer are adjusted snugly. Ensure there are no obstructions in the label path. Check for any bent or damaged labels in the stack.
- Labels Not Sticking Properly:
- Solution: Ensure the package surface is clean, dry, and smooth. Apply firm, even pressure across the entire label when attaching. Store labels in recommended conditions to maintain adhesive integrity.
7. Specifications
| Attribute | Detail |
|---|---|
| Label Size | 4x6 inches |
| Labels per Stack | 500 |
| Printing Method | Direct Thermal (Black Print Only) |
| Material | Paper |
| Color | White |
| Shape | Rectangular |
| Finish Type | Glossy |
| Environmental Compliance | FSC RoHS approved, BPS free |
| Manufacturer | vretti |
| Model Number | 4x6 |
| ASIN | B0CS693KHD |
8. Warranty and Support
For product support or inquiries, please contact vretti directly. Specific warranty details for this consumable product may vary; please refer to the purchase documentation or contact the manufacturer for current warranty information.
Manufacturer Contact: support@vretti.net
Place of Business: Zhu Hai, Guang Dong, China





