Epson DX7 L1440 Printhead: L1440-A1(DX5) vs L1440-U2(DX7) – 1440 Nozzles, 180dpi/360dpi, VSDT Technology

Compare Epson L1440-A1 (AQ ink) and L1440-U2 (UV/Eco-solvent). 1440 nozzles, 180dpi per color, 360dpi in dual-row mode, VSDT variable droplet, PrecisionCore technology.

Epson DX7 L1440 Printhead: L1440-A1 vs L1440-U2 – Official Specifications Comparison

The Epson DX7 L1440 printhead is a high-performance piezoelectric on-demand inkjet solution designed for industrial printing applications. It features the PrecisionCore technology, VSDT (Variable Size Droplet Technology), and supports both single-color and multi-color output with up to 8 channels.

Two variants are available:

• L1440-A1: Optimized for aqueous (AQ) inks
• L1440-U2: Designed for UV and eco-solvent inks

Both models share identical physical dimensions and core architecture but differ in ink compatibility, droplet volume, firing frequency, and viscosity requirements.

This comparison is based solely on official product data from Epson’s website.

Technical Specifications

Parameter	Epson L1440-A1	Epson L1440-U2
Product Name	L1440-A1	L1440-U2
Ink Type	Aqueous (AQ)	UV / Eco-solvent
Dimensions (W × D × H)	60.4 × 46.9 × 71.1 mm	60.4 × 46.9 × 71.1 mm
Weight	94 g	94 g
Nozzle Count	1440	1440
Nozzle Pitch	180 npi (1/180 inch)	180 npi (1/180 inch)
Number of Columns	8	8
Max Supported Colors	8 colors (180 npi per color)	8 colors (180 npi per color)
Resolution	180 npi per column, 360 dpi in dual-column mode	180 npi per column, 360 dpi in dual-column mode
Effective Print Width	25.4 mm (1 inch)	25.4 mm (1 inch)
Firing Frequency	46 kHz (single dot), 23.2 kHz (multi-dot)	40 kHz (single dot), 20 kHz (multi-dot)
Droplet Volume	3.4–9.2–16 pl	4.5–10–19 pl
Recommended Ink Viscosity	4–5 mPa·s	6–8 mPa·s
Technology	PrecisionCore (MACH: Multi Layer Actuator Head)	PrecisionCore (MACH: Multi Layer Actuator Head)
Features	VSDT (Variable Size Droplet Technology), High density, Miniaturization	VSDT (Variable Size Droplet Technology), High density, Miniaturization

Key Technical Notes from Official Sources

VSDT (Variable Size Droplet Technology): Allows dynamic control of droplet size (small, medium, large), reducing graininess and enabling smoother gradients and higher color saturation.

Miniaturization Design: Compact form factor enables space-saving multi-head configurations, reducing head movement distance and increasing throughput.

High Durability: Built for commercial and industrial environments with high-speed and high-quality printing demands.

Multi-Color Support: Supports up to 8 colors per head, with flexible configuration options for CMYK + LC/LM/Orange/Gray.

Print Mode Flexibility:
4-color output: 360 dpi per color
8-color output: 180 dpi per color

Application Compatibility

⚠️ Note: Although both heads have the same physical design, they are not interchangeable without compatible electronics and firmware due to differences in ink viscosity handling and droplet control logic.

Looking for the Epson L1440-A1,L1440-U2 Printhead?

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