LONGER ePrint UV Printer: Ultimate Guide

Welcome to the comprehensive overview of the LONGER ePrint, a dual-printhead 4-in-1 UV flatbed printer designed for creative printing and custom crafts.

1. Unboxing & First-Time Setup

Get started quickly with your LONGER ePrint using our step-by-step setup guide and video tutorial.

Operating Environment & Setup Basics

• Temperature & Humidity: Maintain an ambient temperature of 20°C–25°C and humidity levels of 40%–60% to prevent abnormal ink drying or material warping.
  
  • Standard Bed: Supports print sizes up to 310 mm × 420 mm (height limit: 60 mm).
    
  • Mini Bed: Supports print sizes up to 310 mm × 75 mm (height limit: 60 mm).
• Power Management Caution: Keep the ePrint powered on continuously. The built-in auto-flash cleaning mode runs periodically to prevent printhead clogging.

2. Special Printing Techniques & Applications

Explore the versatile application guides to unlock creative effects with the LONGER ePrint:

• Crystal UV Transfer (AB Film): Step-by-step transfer workflow using hard white ink and UV AB film.
  
• Light Painting Kit: Quick-start instructions for printing multi-layer illuminated art.
  
• Wooden Wall Hanging Kit: Techniques for direct-to-wood printing and mounting.
  
• UV Hot Stamping Film: Process for applying metallic foil (gold/silver) using soft white ink.
  
• Embroidery Effect (AB Transfer): Create textured 3D faux-embroidery effects using special transfer film.
  
• Oil Painting Effect: Add tactile brush-stroke textures and rich color layers to emulate real oil paintings.
  

3. Ink Selection & Long-Term Shutdown Rule

Ink Type Selection

• Hard White Ink: High rigidity and scratch resistance. Best for rigid substrates like metal, glass, acrylic, or hard plastics, as well as Crystal UV AB Transfer Stickers.
  
• Soft White Ink: Flexible and stretchable. Ideal for soft or bendable surfaces like canvas, leather, or fabric, as well as UV Hot Stamping Foil effects.
  

Long-Term Shutdown Protocol (4+ Days Inactive)

If power must be disconnected for 4 days or longer, follow these preservation steps:

1. Drain Ink System: Wear disposable gloves, draw ink out of ink cartridges using a syringe, and execute a software clean cycle to flush ink from tubes and dampers.
   
2. Clean Printhead & Capping Station: Move the printhead to the center position and wipe residual ink off the printhead and ink pad using lint-free wipes and cleaning fluid.
   
3. Apply Moisturizing Fluid: Apply moisturizing liquid to the ink pad using a syringe, return the printhead to the home position until capped, and then disconnect power.

4. Longer Studio App Guide

Manage designs, adjust layer parameters, and start print jobs seamlessly using Longer Studio.

Section / Function	Description & Resource Links
Printer Connection	Connect ePrint via Wi-Fi or LAN.
Homepage Overview	Access device status, bed selection, and basic operations.
Element Editing	Import, scale, adjust layers, and assign white/varnish ink maps.
Print Workflow	Finalize layout, set resolution/speed, and send print jobs.
App Download	Available for Windows, macOS (Apple Silicon / Intel), iOS, and Android.

5. Maintenance & Hardware Replacement

Keep your machine in top operational condition with step-by-step component maintenance guides:

• Ink Stack & Wiper Blade Replacement: Maintain clean printhead capping and wiping performance.
  
• Printhead Replacement: Complete guide on safely removing, installing, and aligning printheads.
  
• Linear Encoder Strip Replacement: Instructions for replacing and calibrating the position encoder strip.
  
• Linear Encoder Replacement: Procedure for replacing the optical sensor unit for accurate carriage positioning.