Ricoh Gen5 Printhead For Mimaki SWJ-320

Design Features
- 1280 channels
- Two color and four color support
- Single color: 600npi
- Two color: 300npi
- Four color: 150npi
- 8 level grey scale capability

Specification
Size: 89 x 25 x 69 mm excluding cable and connectors
Head materials: SST, Nickel alloy and epoxy adhesive, direct contact with ink
Compatible jetting fluids: Compatible with water, solvent, oil, UV curable inks
Nozzle plate surface: Coated SST
Number of nozzles: 4 x 320 channels
Nozzle spacing:
A: Within a single row: 0.1693 mm (1/150")
B: Within a color: 0.0847 mm (1/300")
C: Single Pass: 0.0423 mm (1/600")
D: Row to row distance: 0.55 mm
E: Color to color: 11.811 mm
Inkjet inlet port: 2 x dual ports
Piezo type: D33 staked PZT
Drop ejection mode: Piston pusher with metallic diaphragm plate
Integrated electronics: Low voltage serial to high voltage parallel converter; 3-bit shift resistors; transmission gate outputs
Temperature control: Integrated heater and thermistor
Viscosity: 11 cP at operating temperature
Surface tension: 32 dynes/cm
Native drop volume: 7 picoliter
Drop volume range/variation: 7-35 picoliter with grey scale +- 10%
Drop velocity nominal/variation: 7 m/sec/ +-15%
Crosstalk: 10% or less with all channels firing
Jet straightness 1 sigma: < 3.5 milliradian from nozzle radian
Native drop operation frequency: 60kHz Higher burst possible under ideal condition
Life: 100 billion actuation's per nozzle

Used on latest Mimaki SWJ-320 etc.