Found more cheap printer parts products only at Demawati.com . Ricoh Gen5 Printhead For Mimaki SWJ-320. Price : $1,090.00 Availability:In Stock Brand: Ricoh Product Code: DIS0114 . 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.