RICOH G5 printhead used in UV Ad Corrugated paper Photography Ceramic Tile printers

Ricoh G5 (Gen5) Print Head – English Introduction

Key Specifications

• Model Number: MH5420 / MH5440 (G5), MH5220 (G5S)
• Nozzle Configuration: 1,280 nozzles (4 × 320 rows), 54.1 mm print width
• Physical Resolution: 600 dpi; up to 1,200 dpi in staggered multi-head setups
• Ink Droplet Size:
  • Binary mode: 7 pl
  • Grayscale mode: 7–35 pl (variable drop technology)
• Grayscale Levels: Up to 8 levels per dot
• Jetting Frequency:
  • Binary: 30 kHz
  • Grayscale: 20 kHz
• Ink Compatibility: UV-curable, eco-solvent, solvent, aqueous
• Operating Viscosity: 10–12 mPa·s (11 cP typical)
• Temperature Control: Integrated heater + thermistor; max 60°C
• Construction: All-stainless steel (corrosion-resistant, durable)
• Lifespan: Rated for 100 billion ejections (3–4 years in industrial use)
• Weight: ~155 g

Core Advantages

1. High Precision & Image Quality

   1,280 nozzles at 42 μm pitch deliver sharp details (printable text as small as 2 mm) and smooth gradients. Grayscale variable-drop technology reduces ink consumption by up to 50% while maintaining photo-grade quality.
2. Industrial Durability & Reliability

   All-steel body resists corrosion and clogging. Integrated heater handles high-viscosity inks; isolated ink channels support 4-color printing per head.
3. Broad Application Versatility

   Ideal for:

   • UV flatbed / roll-to-roll printers
   • Signage, banners, labels, packaging
   • Ceramics, glass, wood, metal substrates
4. Stable & Low Maintenance

   Piston-type automatic cleaning minimizes damage risk. Fixed linear grating ensures precise carriage positioning for consistent, repeatable printing.

Common Models

• MH5440 (G5): Standard, 7–35 pl, 4-color, UV/solvent
• MH5420 (G5): Compact variant, same core performance
• MH5220 (G5S): High-resolution variant, 2.5–9 pl, fine detail work