1. Introduction
Thank you for choosing the SIHAO DTF-C31 DTF Printer. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new printer. The DTF-C31 series is designed for high-quality direct-to-film printing, ideal for T-shirt and garment heat transfer applications. It features either an EPSON TX800 or XP600 6-color print head, offering high resolution and fast printing speeds.

2. Setup
2.1 Unboxing and Package Contents
Carefully unpack all components and ensure the following items are present:
- DTF-C31 Printer Unit
- 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)
2.2 Physical Installation
- Place the printer on a stable, level surface in an environment with good ventilation, away from direct sunlight and extreme temperatures. Refer to the operating environment specifications.
- Connect the power cord to the printer and a suitable power outlet (220V).
- Attach the roll film bracket and paper platform to the printer as instructed in the assembly guide (refer to included diagrams if any).
- Connect the printer to your computer using a Gigabit Ethernet interface cable.
2.3 Ink and Film Preparation
- Fill the continuous ink supply system with DTF ink (CMYKWW channels). Ensure white ink tanks are properly filled.
- Verify that the white ink mixing system and circulation device are active to prevent sedimentation.
- Load the DTF PET film onto the roll film bracket and feed it through the paper platform. Ensure it is aligned correctly to prevent skewing during printing.
2.4 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 on-screen instructions for software setup and driver installation.
3. Operating Instructions
3.1 Control Panel Overview

The control panel features an LED screen for status display and several buttons for printer control:
- LED Screen: Displays printer status, settings, and error messages.
- Rewind Key: Used to rewind the film.
- Paper Feed Key: Advances the film.
- Print Clean: Initiates a print head cleaning cycle.
- Print Check: Prints a nozzle check pattern to verify print head health.
- Menu: Accesses printer settings and options.
- Print Pause/Resume: Pauses or resumes the current print job.
3.2 Basic Printing Process
- Power On: Turn on the printer using the main power switch.
- Software Preparation: Open your RIP software on the connected computer. Load your design and configure print settings (e.g., resolution, color profile, film size).
- Send Print Job: Send the prepared design from the RIP software to the printer.
- Monitor Printing: The printer will automatically feed the DTF PET film and begin printing. The print head will apply white ink first, followed by color inks, ensuring high definition and vivid colors.
- Film Handling: Once printing is complete, carefully remove the printed film for powder application and curing.

3.3 Key Printing Features
- Extreme Printing Speed: The TX800 model achieves 0.9 m²/h, while the XP600 model reaches 1 m²/h, offering efficient production.
- High Definition Printing: Utilizes high-quality printing nozzles with resolutions up to 5760 x 1440dpi for clear and sharp images.
- White and Color Simultaneous Printing: White ink and color ink can be printed at the same time to improve printing efficiency.
- Noise Reduction Adsorption Platform: The lengthened stainless steel suction printing platform ensures the film remains stable during printing, preventing arching.
4. Maintenance
Regular maintenance is crucial for extending the lifespan of your printer and ensuring consistent print quality.
4.1 Ink System Maintenance
- White Ink Mixing System: Ensure the built-in white ink mixer is always active to prevent white ink sedimentation. Sedimentation can lead to nozzle blockage and reduced print quality.
- White Ink Circulation Device: Regularly check that the automatic circulation device for white ink is functioning correctly. This helps prevent clogs and maintains ink consistency.
- Ink Levels: Monitor ink levels regularly and refill tanks before they run dry to prevent air from entering the ink lines.
4.2 Print Head Maintenance
- Nozzle Check: Perform a nozzle check (using the 'Print Check' button on the control panel) daily or before each major print session to identify any clogged nozzles.
- Print Head Cleaning: If the nozzle check reveals clogs, perform a print head cleaning cycle (using the 'Print Clean' button). Repeat if necessary. For persistent clogs, consult the troubleshooting section or contact support.
4.3 General Cleaning
- Exterior Cleaning: Wipe the exterior of the printer with a soft, damp cloth. Avoid using harsh chemicals.
- Suction Platform: Keep the stainless steel suction printing platform clean and free of dust or ink residue to ensure proper film adhesion and smooth feeding.
- Dust Prevention: Keep the printer covered when not in use to prevent dust accumulation, especially on the print head and film path.
5. Troubleshooting
This section addresses common issues you might encounter with your DTF printer.
5.1 Poor Print Quality
- Problem: Streaks, missing lines, or faded colors in prints.
- Solution:
- Check ink levels and refill if necessary.
- Perform a nozzle check to identify clogged nozzles.
- Run a print head cleaning cycle. Repeat up to 2-3 times if needed.
- Ensure the DTF film is of good quality and stored correctly.
- Verify print settings in the RIP software (resolution, color profile).
5.2 Printer Not Responding
- Problem: Printer does not respond to commands or is not detected by the computer.
- Solution:
- Check all power connections and ensure the printer is turned on.
- Verify the Ethernet cable connection between the printer and computer.
- Restart both the printer and the computer.
- Check printer drivers and software for proper installation and updates.
5.3 Film Feeding Issues
- Problem: Film jams, skews, or does not feed properly.
- Solution:
- Ensure the DTF film is loaded correctly onto the roll film bracket and paper platform, aligned with the guides.
- Check for any obstructions in the film path.
- Verify that the vacuum suction platform is clean and active to hold the film flat.
- Ensure the film is not wrinkled or damaged.
5.4 White Ink Sedimentation/Clogging
- Problem: White ink appears separated or causes frequent clogs.
- Solution:
- Confirm the white ink mixing system is continuously operating.
- Ensure the white ink circulation device is functioning.
- Perform regular print head cleanings and nozzle checks.
- Use only high-quality DTF white ink compatible with your printer.
6. Specifications
Below are the technical specifications for the SIHAO DTF-C31 printer models:
| Feature | TX800 Model | XP600 Model |
|---|---|---|
| Printer Nozzle Type | EPSON TX800 | EPSON XP600 |
| Ink Type | DTF INK | DTF INK |
| Printing Size | A4/A3/A3+/30cm width roll | A4/A3/A3+/30cm width roll |
| Print Speed | 0.9 m²/h | 1 m²/h |
| Software Setting Precision | 1440x1440dpi, 2880x1440dpi, 5760x1440dpi | 1440x1440dpi, 2880x1440dpi, 5760x1440dpi |
| Printing Material | DTF PET Film | DTF PET Film |
| Print Accuracy | 720x1080dpi, 720x1440dpi, 720x2160dpi | 720x1080dpi, 720x1440dpi, 720x2160dpi |
| Ink Channel | CMYKWW | CMYKWW |
| Print Software | Maintop/RIIN/PP/PP | Maintop/RIIN/PP/PP |
| Ink Loss | 20ml/m² | 20ml/m² |
| Ink Supply Method | Continuous Ink Supply | Continuous Ink Supply |
| White Ink Mixing System | Yes | Yes |
| White Ink Circulate System | Yes | Yes |
| Vacuum Suction Platform | Yes | Yes |
| Interface Type | Gigabit Ethernet interface | Gigabit Ethernet interface |
| Operating System | Windows 7/10/11 (64-bit) | Windows 7/10/11 (64-bit) |
| Operating Environment | Temp: 18-30°C, Humidity: 40-60%RH | Temp: 18-30°C, Humidity: 40-60%RH |
| Power | 300W | 300W |
| Voltage/Plug | 220V | 220V |
| Printer Size | 93 x 33 x 29 cm | 93 x 33 x 29 cm |
| Net Weight | 33 KG | 33 KG |
| Gross Weight | 39 KG | 39 KG |
| Package Size | 103 x 42 x 37 cm | 103 x 42 x 37 cm |
| Double-sided Printing | Yes | Yes |
| Supports Network Printing | Wired/Wireless | Wired/Wireless |
| Paper Feed Mode | Auto | Auto |
| Max Paper Size | A3+ | A3+ |
7. User Tips
To maximize your printing experience and prolong the life of your SIHAO DTF-C31 printer, consider the following tips:
- Consistent Ink Flow: Always ensure ink tanks are adequately filled and the white ink mixing/circulation systems are active, especially before long print jobs.
- Daily Nozzle Checks: Perform a nozzle check pattern print at the start of each day to catch potential clogs early. This can save time and ink.
- Optimal Environment: Maintain the recommended operating temperature and humidity to prevent ink drying or film issues.
- Cleanliness is Key: Regularly clean the printer's exterior, especially the film path and suction platform, to avoid dust and debris affecting print quality.
- Software Updates: Keep your RIP software and printer drivers updated to ensure compatibility and access to the latest features and bug fixes.
8. Warranty and Support
SIHAO is committed to providing quality products and attentive service. For detailed warranty information, including coverage periods and terms, please refer to the warranty card included with your product or visit the official SIHAO website. For technical assistance, troubleshooting beyond this manual, or spare parts inquiries, please contact SIHAO customer support. Our 24/7 attentive service team is available to assist you.






