Introduction
This manual provides detailed instructions for the safe and efficient use of your IOOIOO D210 Portable Thermal Printer. Please read this manual thoroughly before operating the device and retain it for future reference.
Package Contents
Verify that all items listed below are included in your package:
- IOOIOO D210 Portable Thermal Printer
- 5 Tattoo Stencil Transfer Sheets
- 1 Roll of A4 or Letter Thermal Paper
- 3 Continuous Folded Pieces of Letter Thermal Paper
- USB Cord
- QR Code for Manual Download (digital manual)

Image: The IOOIOO D210 printer shown with a roll of thermal paper, folded thermal paper, tattoo stencil sheets, and a smartphone displaying the printer's application interface.
Product Overview
The IOOIOO D210 is a compact, inkless thermal printer designed for portability and versatility. It supports printing on A4 and Letter-sized thermal paper, including rolled and folded formats, and is also capable of transferring tattoo stencils. Its inkless operation eliminates the need for ink cartridges, requiring only thermal paper.
- Dimensions: 10.5 inches (D) x 3.1 inches (W) x 1.9 inches (H)
- Weight: Approximately 1.43 pounds (0.96 kg)
- Print Speed: Approximately 4 pages per minute (monochrome)
- Print Head Life: Approximately 170,000 letter pages
- Connectivity: Bluetooth (for phones), USB (for PCs)

Image: A front-side view of the IOOIOO D210 Portable Thermal Printer, showcasing its compact black design.

Image: The IOOIOO D210 printer depicted in different settings, including travel, a car, a home office, and a professional office, highlighting its portability and versatility.
Setup
1. Charging the Printer
Before initial use, ensure the printer is fully charged. Connect the provided USB cord to the printer and a compatible power source (e.g., a computer USB port or a USB wall adapter). The charging indicator light will provide status.
2. Loading Paper
The D210 printer supports various thermal paper types, including A4/Letter rolled paper and continuous folded paper.

Image: The IOOIOO D210 printer with a sheet of thermal paper being fed into its input slot, demonstrating the paper loading process.
For Rolled Paper:
- Open the paper input cover.
- Insert the thermal paper roll, ensuring the printable side faces the print head.
- Gently feed the leading edge of the paper into the input slot until the printer automatically grips it.
- Close the paper input cover.

Image: The IOOIOO D210 printer positioned next to a stack of continuous folded thermal paper, illustrating its compatibility with this paper type.
For Folded Paper:
- Open the paper input cover.
- Place the stack of folded thermal paper behind the printer.
- Feed the leading edge of the top sheet into the input slot until the printer automatically grips it.
- Ensure the paper stack is aligned to prevent jams.
- Close the paper input cover.
3. Connecting to Devices
The IOOIOO D210 supports both Bluetooth connectivity for mobile devices and USB connectivity for computers.
Bluetooth Connection (Android/iPhone):
- Turn on the printer.
- Enable Bluetooth on your smartphone.
- Download the dedicated printer application (refer to the QR code provided in your package for the manual download link, which includes app information).
- Open the application and follow the in-app instructions to search for and connect to the D210 printer via Bluetooth.
USB Connection (Mac/Windows PC):
- Turn on the printer.
- Connect the printer to your computer using the provided USB cable.
- Install the necessary drivers for your operating system. These drivers are typically available via the link provided with the QR code manual.
- Once drivers are installed, the printer should be recognized by your computer's printing settings.
Operating Instructions
1. Printing Thermal Paper
The D210 printer is designed for monochrome (black and white) thermal printing on A4 or Letter-sized thermal paper.
- Ensure the printer is connected to your device (smartphone via Bluetooth or PC via USB).
- Load the thermal paper correctly (refer to "Loading Paper" section).
- Open the document or image you wish to print on your device.
- Select the print option and choose the IOOIOO D210 as your printer.
- Adjust print settings as needed within the application or printer driver.
- Initiate the print job.

Image: A close-up of the IOOIOO D210 printer actively printing on a roll of thermal paper, with the printed text visible.
2. Printing Tattoo Stencils
The D210 printer is capable of producing clear tattoo stencils. It excels at printing sharp lines and large black blocks. Please note that it is not optimized for gradient designs or color printing.
- Ensure the printer is connected to your device.
- Load tattoo stencil transfer paper into the printer, ensuring the correct side is facing the print head for transfer.
- Open your stencil design on your device.
- Use the dedicated printer application or driver to send the stencil design to the printer.
- Review the printed stencil for clarity before use.

Image: A printed tattoo stencil on transfer paper, demonstrating the clarity of lines and text produced by the IOOIOO D210 printer.

Image: A side-by-side comparison showing a detailed tattoo stencil printed by the IOOIOO D210 printer on the left, and a less clear print from another printer on the right, highlighting the D210's superior output for intricate designs.
Maintenance
1. Cleaning the Printer
To ensure optimal performance and print quality, periodically clean your printer.
- Exterior: Wipe the exterior of the printer with a soft, dry, lint-free cloth. Do not use liquid cleaners or abrasive materials.
- Print Head: If print quality degrades, the print head may need cleaning. Consult the digital manual (accessed via QR code) for specific instructions on print head cleaning, as improper cleaning can cause damage.
2. Paper Storage
Store thermal paper in a cool, dry place away from direct sunlight and heat to preserve its quality and prevent premature fading of prints.
Troubleshooting
This section addresses common issues you might encounter with your IOOIOO D210 printer.
1. Printer Not Connecting via Bluetooth/USB
- Ensure the printer is powered on and fully charged.
- For Bluetooth, verify Bluetooth is enabled on your device and the printer is discoverable. Try restarting both the printer and your device.
- For USB, ensure the cable is securely connected to both the printer and the computer. Verify that the correct drivers are installed on your PC/Mac.
- If using a mobile app, ensure it is the latest version and has necessary permissions.
2. Poor Print Quality or Partial Prints
- Check that the thermal paper is loaded correctly and is not creased or damaged.
- Ensure you are using high-quality thermal paper suitable for the D210.
- The printer is monochrome; it does not print in color or complex gradients effectively.
- If printing tattoo stencils, ensure the stencil transfer paper is loaded with the correct side facing the print head.
- Clean the print head if print quality issues persist (refer to the Maintenance section).
- Some users have reported occasional issues with partial prints or software stability. If this occurs, try restarting the print job or the printer application.
3. Printer Not Responding
- Check the power indicator light. If it's off, the battery may be depleted or the printer is not powered on.
- Perform a soft reset by turning the printer off and then on again.
- If the issue persists, disconnect and reconnect the power source.
4. App/Software Issues
- Ensure your device's operating system is up to date.
- Reinstall the printer application or drivers if you experience frequent crashes or connectivity loss.
- Some users have noted limitations in the app's editing features (e.g., resizing). It may be necessary to prepare images in another application before sending them to the printer app.
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 10.5"D x 3.1"W x 1.9"H |
| Item Weight | 2.12 pounds (0.96 Kilograms) |
| Maximum Media Size | A4 (210 x 297 mm), Letter (216 x 279 mm) |
| Print Media | Thermal Paper (plain), Tattoo Stencil Transfer Paper |
| Max Input Sheet Capacity | 50 sheets (for folded paper) |
| Max Print Speed (Monochrome) | 4 ppm (pages per minute) |
| Printing Technology | Thermal |
| Connectivity Technology | Bluetooth (for Phone), USB (for PC) |
| Hardware Interface | USB |
| Additional Printer Functions | Print Only |
| Dual-sided printing | No (Simplex) |
| Batteries | 1 Lithium Ion battery required (included) |
| Model Name | D210 (iooioo) |
Warranty and Support
Warranty Information
The IOOIOO D210 Portable Thermal Printer comes with a limited warranty. Please refer to the digital manual (accessed via the QR code provided in the package) or contact customer service for specific warranty terms and conditions.
Customer Service
If you encounter any problems with your product or require assistance, please contact IOOIOO customer service. Contact information, including a local US phone number, is available in the digital manual or on the official IOOIOO website. We are committed to assisting you with any issues.



