1. Introduction
The Sihao A3-L805 is a versatile flatbed UV inkjet printer designed for high-quality printing on a wide range of materials. This manual provides essential information to help you set up, operate, and maintain your printer effectively, ensuring optimal performance and longevity.
Key Features:
- Supports A3 and A4 print formats.
- Utilizes UV ink for durable and vibrant prints.
- Capable of printing on cylindrical objects (2-11 cm diameter) with the included rotary attachment.
- Maximum print area of 32 x 50 cm with a maximum print height of 15 cm.
- High precision printing at 1440 x 1440 dpi.
- Equipped with a Continuous Ink Supply System (CISS) and automatic white ink mixing.
2. Safety Information
Please read and understand all safety instructions before operating the printer to prevent injury or damage to the device.
- Always connect the printer to a grounded power outlet.
- Do not expose the printer to water or excessive humidity.
- Keep hands and loose clothing away from moving parts during operation.
- UV light can be harmful to eyes and skin. Avoid direct exposure to the UV lamp. Use protective eyewear and gloves when handling UV ink.
- Ensure adequate ventilation in the work area when using UV inks.
- In case of emergency, press the red emergency stop button immediately.
- Only use genuine Sihao replacement parts and recommended UV inks.
3. Package Contents
Verify that all items are present in the package:
- Sihao A3-L805 UV Printer
- Power Cable
- USB Cable
- UV Ink Set (Cyan, Magenta, Yellow, Black, White, Varnish)
- Cylinder Rotary Attachment
- AcroRIP White ver9.0 Software (on USB drive or download link)
- User Manual (this document)
4. Product Overview
Familiarize yourself with the main components and controls of your Sihao A3-L805 UV Printer.

Figure 4.1: Front view of the Sihao A3-L805 UV Printer with labeled controls including the emergency stop switch, fan, function buttons, ink button, paper button, and printer tray.

Figure 4.2: Frontal view of the Sihao A3-L805 UV Printer, showcasing the flatbed and control panel.
5. Setup
5.1 Unpacking and Placement
- Carefully remove the printer from its packaging. Retain all packaging materials for future transport.
- Place the printer on a stable, level surface in a well-ventilated area, away from direct sunlight and heat sources.
- Ensure there is sufficient space around the printer for operation and maintenance.
5.2 Power and USB Connection
- Connect the power cable to the printer and then to a grounded 220V power outlet.
- Connect the USB cable from the printer to your PC.
5.3 Software Installation
- Insert the provided USB drive or navigate to the specified download link for AcroRIP White ver9.0 software.
- Follow the on-screen instructions to install the software and printer drivers on your Windows 7-11 PC.
- Restart your computer after installation is complete.
5.4 Ink Loading (CISS)
The printer uses a Continuous Ink Supply System (CISS). Refer to the specific instructions provided with your ink set for proper filling and priming of the ink tanks. Ensure each color (C, M, Y, K, W, V) is filled into its corresponding tank.
5.5 Initial Calibration
After ink loading, perform an initial print head cleaning and alignment through the AcroRIP software to ensure optimal print quality.
6. Operating Instructions
The Sihao A3-L805 supports multiple printing modes, including flatbed and 360-degree cylindrical printing.

Figure 6.1: Illustration of flat printing and 360-degree cylindrical printing capabilities.
6.1 General Printing Process
- Prepare your print file in AcroRIP White ver9.0 software.
- Select the appropriate print settings, including resolution (1440x1440 dpi recommended for high quality), color mode, and material type.
- Place the object to be printed on the printer tray or rotary attachment.
- Adjust the print height to ensure proper clearance between the print head and the object (maximum 15 cm).
- Initiate the print job from the software. The printer will automatically apply UV ink and cure it instantly.
6.2 Flatbed Printing
For flat objects such as phone cases, panels, or tiles:
- Ensure the vacuum suction platform is active to secure the material.
- Place the flat object directly onto the printer tray within the 32 x 50 cm print area.
- Proceed with the general printing process.
6.3 Cylinder/Bottle Printing
For cylindrical objects like bottles or cups (2-11 cm diameter):

Figure 6.2: The Sihao A3-L805 UV Printer shown with the cylinder rotary attachment installed.

Figure 6.3: A close-up view of a bottle being printed using the rotary attachment, demonstrating the printer's capability for cylindrical objects.
- Install the cylinder rotary attachment onto the printer tray.
- Secure the cylindrical object onto the rotary attachment.
- Adjust the print height and software settings for cylindrical printing.
- Proceed with the general printing process.
6.4 Material Compatibility
The printer supports various materials:
- Direct Printing: ABS, PC, PET, PVC, PU, TPU, high-quality acrylic.
- Requires Pre-coating: Leather, metal, wood, glass, silicone.
- Not Printable: PP, PE.
7. Maintenance
Regular maintenance ensures consistent print quality and extends the life of your printer.
7.1 Daily Maintenance
- Perform a print head cleaning cycle through the software before and after each printing session, especially if the printer has been idle.
- Wipe the printer tray and exterior surfaces with a soft, lint-free cloth.
7.2 Weekly Maintenance
- Check ink levels and refill as necessary.
- Ensure the white ink mixing system is functioning correctly to prevent pigment settling. The printer features an intermittent white ink mixing system.
- Inspect the UV lamp for any debris and gently clean if needed (ensure printer is off and cooled).
7.3 Long-Term Storage
If the printer will not be used for an extended period, perform a thorough cleaning cycle and follow the manufacturer's guidelines for print head protection and ink system preparation for storage.
8. Troubleshooting
This section addresses common issues you might encounter.
| Problem | Possible Cause | Solution |
|---|---|---|
| Poor print quality (streaks, missing colors) | Clogged print head, low ink levels, incorrect settings. | Perform print head cleaning cycles. Check ink levels and refill. Verify print settings in AcroRIP. |
| Printer not recognized by PC | Loose USB connection, driver issue. | Ensure USB cable is securely connected. Reinstall printer drivers. Try a different USB port. |
| White ink not printing correctly | White ink settling, clogged white ink channel. | Ensure the white ink mixing system is active. Perform multiple white ink cleaning cycles. |
| Printer not powering on | Power cable disconnected, power outlet issue. | Check power cable connection. Test power outlet with another device. |
9. Specifications

Figure 9.1: Diagram illustrating key dimensions and specifications of the Sihao A3-L805 UV Printer.
| Feature | Detail |
|---|---|
| Brand | Sihao |
| Model Number | A3-L805 |
| Printing Technology | Inkjet (UV) |
| Connectivity Technology | USB 2.0 |
| Total USB Ports | 1 |
| Maximum Print Resolution | 1440 x 1440 dpi |
| Maximum Media Size | 330mm x 500mm (A3) |
| Maximum Print Height | 15 cm |
| Cylinder Printing Diameter | 2 cm to 11 cm |
| Power Consumption | 250 Watts |
| Operating System Compatibility | Windows 7-11 |
| Included Software | AcroRIP White ver9.0 |
| Printer Dimensions (Approx.) | 83.8 cm (L) x 63 cm (W) x 51.8 cm (H) |
| Printer Weight | 68 kg |
10. Warranty and Support
10.1 Product Warranty
The Sihao A3-L805 UV Printer comes with a 1-year limited warranty, covering manufacturing defects. This warranty also applies to the availability of spare parts within the EU for 1 year.
10.2 Customer Support
For any questions, technical assistance, or warranty claims, please contact our professional customer service team. We provide 24/7 online support. You can reach us via Amazon messaging for prompt assistance.





