1. Introduction
The SIHAO DTF-C31 Direct-to-Film (DTF) printer is a high-quality printing solution designed for heat transfer applications on various fabrics. Equipped with either an EPSON TX800 or XP600 print head, it offers efficient and high-resolution printing for custom apparel, accessories, and other textile products. This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your DTF-C31 printer.
2. Key Features
- High-Speed Printing: The TX800 print head achieves speeds of 0.9 m²/h, while the XP600 print head reaches 1 m²/h, offering significantly faster output compared to other print heads.
- Advanced Ink System: Features a built-in white ink mixer and an automatic circulation device to prevent white ink sedimentation and nozzle clogging, thereby extending the printer's lifespan.
- High Definition Output: Utilizes high-quality printing nozzles to deliver resolutions up to 5760 x 1440 dpi, ensuring clear, sharp, and vivid prints with excellent color reproduction.
- Stable Printing Platform: Equipped with a lengthened stainless steel suction printing platform that ensures the printing film remains stable and prevents arching during the printing process.
- User-Friendly Operation: Designed with a simple and intuitive operating system for ease of use.
- Versatile Application: Compatible with a wide range of fabrics and materials, including cotton, polyester, leather, T-shirts, shoes, socks, hats, and various handicrafts.
3. Package Contents
Upon unpacking, please verify that all the following items are included:
- Paper platform (x1)
- Power cord (x1)
- Roll film bracket (x1)
- RIP software (x1)
- Extend the hose (x1)
- Paper axis (x1)
- Ink cartridge dispenser (x1)
- Paper dispenser (x1)
- Ink syringe (x1)
- Zip ties (x1)
- Nozzle wiring (x1)
- Paper sleeve holder (x1)
- Ink sac (x1)
- Tool/accessory kit (x1)
4. Setup Instructions
- Unpacking: Carefully remove the printer and all accessories from the packaging. Retain packaging for future transport or storage.
- Placement: Place the printer on a stable, level surface in an environment with a temperature between 18-30°C and humidity between 40%-60%RH. Ensure adequate ventilation.
- Install Roll Film Bracket: Attach the roll film bracket to the rear of the printer as shown in the diagram. This supports the DTF PET film roll.
- Power Connection: Connect the power cord to the printer and then to a 220V power outlet. Do not power on yet.
- Ink System Setup:
- Install the ink cartridge dispenser and ink sacs.
- Fill the ink reservoirs with appropriate DTF ink (CMYKWW).
- Ensure the white ink mixing and circulation systems are correctly engaged to prevent sedimentation.
- Software Installation: Install the provided RIP software (Maintop/RIIN/PP/PP) on a 64-bit Windows 7, Windows 10, or Windows 11 operating system. Follow the software's installation guide.
- Connect to Computer: Connect the printer to your computer using a Gigabit Ethernet interface cable.
- Initial Power On: Turn on the printer. The LED screen should illuminate. Follow any on-screen prompts for initial setup or calibration.

Image: Rear view of the DTF-C31 printer, illustrating the roll film bracket installation.
5. Operating Instructions
5.1 Control Panel Overview

Image: Close-up of the printer's control panel with LED screen and function buttons.
- LED Screen: Displays printer status, settings, and error messages.
- Rewind Key: Controls the rewinding of the film.
- Paper Feed Key: Manually feeds or reverses the printing film.
- Print Clean: Initiates a print head cleaning cycle.
- Print Check: Prints a nozzle check pattern to assess print head health.
- Menu: Accesses printer settings and configuration options.
- Print Pause/Resume: Pauses or resumes the current printing job.
5.2 Printing Process
- Prepare Design: Create or load your design in the RIP software. Ensure the design is correctly sized and positioned for your DTF film.
- Load DTF Film: Load the DTF PET film onto the roll film bracket, ensuring it feeds smoothly onto the suction printing platform. The suction system will hold the film flat.
- Software Settings: In the RIP software, select the appropriate print head (TX800 or XP600), resolution (e.g., 1440x1440dpi), and ink settings (CMYKWW).
- Print Head Check: Before printing, perform a 'Print Check' from the control panel to ensure all nozzles are firing correctly. Clean the print head if necessary.
- Start Printing: Send the print job from the RIP software to the printer. The printer will begin applying ink to the DTF film.
- Monitor Printing: Observe the printing process. The white ink mixing and circulation systems will operate automatically.
- Post-Printing: Once printing is complete, carefully remove the printed film. Proceed with powder application and curing as per standard DTF workflow.

Image: The DTF-C31 printer actively printing a design onto PET film.
6. Maintenance
Regular maintenance is crucial for optimal performance and longevity of your DTF-C31 printer.
- Daily:
- Perform a nozzle check and clean the print head if any nozzles are clogged or missing.
- Ensure the white ink mixing and circulation systems are functioning correctly to prevent pigment settling.
- Wipe down the printer's exterior and the printing platform to remove any dust or ink residue.
- Weekly:
- Clean the capping station and wiper blade with a lint-free cloth and cleaning solution.
- Inspect ink tubes for any blockages or damage.
- Monthly/As Needed:
- Deep clean the print head if standard cleaning cycles are insufficient. Refer to the software manual for advanced cleaning procedures.
- Check and clean the vacuum suction holes on the printing platform to ensure proper film adhesion.
- Ink Management: Always use high-quality DTF ink. Do not mix different types or brands of ink. Keep ink reservoirs adequately filled.

Image: Internal view of the printer's ink mixing and circulation system.
7. Troubleshooting
This section addresses common issues you might encounter with your DTF-C31 printer.
| Problem | Possible Cause | Solution |
|---|---|---|
| Printer not powering on | Loose power cable, no power from outlet | Check power connections, test outlet with another device. |
| Nozzles clogged / Missing lines in print | Dried ink, white ink sedimentation | Perform print head cleaning cycles. Ensure white ink mixing system is active. If persistent, perform a deep clean. |
| Film not feeding correctly / Arching | Improper film loading, weak suction, dirty platform | Reload film correctly. Check and clean suction holes on the platform. Ensure vacuum suction is active. |
| Poor print quality (faded, incorrect colors) | Low ink levels, incorrect software settings, expired ink | Check ink levels. Verify RIP software settings (color profiles, resolution). Use fresh, compatible DTF ink. |
| Printer not recognized by computer | Loose Ethernet cable, incorrect driver installation, firewall issues | Check Ethernet cable. Reinstall printer drivers. Temporarily disable firewall to test connectivity. |
| White ink settling despite mixing system | Mixing system malfunction, ink too old/thick | Inspect mixing system for operation. Replace old ink. Ensure proper environmental conditions (temperature/humidity). |
8. Specifications
| Feature | TX800 Model | XP600 Model |
|---|---|---|
| Printer Nozzle Type | EPSON TX800 | EPSON XP600 |
| Ink Type | DTF INK | |
| Printing Size | A4 / A3 / A3+ / 30cm width roll | |
| Print Speed | 0.9 m²/h | 1 m²/h |
| Software Setting Precision | 1440*1440dpi, 2880*1440dpi, 5760*1440dpi | |
| Printing Material | DTF PET Film | |
| Print Accuracy | 720*1080dpi / 720*1440dpi / 720*2160dpi | |
| Ink Channel | CMYKWW | |
| Print Software | Maintop / RIIN / PP / PP | |
| Ink Loss | 20ml/m² | |
| Ink Supply Method | Continuous Ink Supply | |
| White Ink Mixing System | Yes | |
| White Ink Circulation System | Yes | |
| Vacuum Suction Platform | Yes | |
| Print Interface | Gigabit Ethernet interface | |
| Operating System | Windows 7 / Windows 10 / Windows 11 (64-bit required) | |
| Operating Environment | Temperature: 18-30°C, Humidity: 40%-60%RH | |
| Power | 300W | |
| Voltage/Plug | 220V | |
| Printer Size | 93 x 33 x 29 cm | |
| Net Weight | 33 KG | |
| Gross Weight | 39 KG | |
| Package Size | 103 x 42 x 37 cm | |
9. User Tips
- Always use the recommended DTF inks and films for best results and to prevent damage to the print heads.
- Keep the printer in a clean, dust-free environment to minimize print head clogging.
- Regularly check the white ink for proper mixing; if it appears separated, ensure the circulation system is active.
- For optimal print quality, perform a nozzle check before each major print session.
- Familiarize yourself with the RIP software settings to achieve desired color accuracy and print detail.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact SIHAO customer service or refer to the official SIHAO website. Ensure you have your product model (DTF-C31) and any serial numbers available when seeking support.






