Flora Digital Printing System
Model LJ320P
Copyright 2011@ Shenzhen Runtianzhi Image Technology Co.,Ltd. By Victor Xu
~19~
4.2 Polaris Print head Introduce
Feature:
35 picoliter nominal drop size
512 individual addressable nozzles
Incorporates versaDropTM binary jetting
capability
Excellent channel-to-channel uniformity
High frequency continuous operation
Designed for long service life
Integral mounting bezel with precision
features
Configurable for single and two-color
operation
Optimized for high viscosity jetting fluids
Built-in heaters and temperature sensors
Operation up to 60°C（140°F）
Simplified field repair with no special tools required
Supports UV-curable, solvent and aqueous-based inks
Technology Specification Table:
Parameter Polaris PQ-512/35AAAPrint head
Number of addressable jets 512
Print width 64.897mm(2.555inches)
NOZZLE SPACING
Single color(4 rows of jets)
127 microns [0.005in.]（200 dpi）
Two color(2 rows of jets/per color) 254 microns [0.01in.](100 dpi)
Jet straightness ,1 sigma* 2.0mrad[0.11°]
Nominal drop velocity 8m/s
Calibrated drop mass 35ng
Compatible jetting fluids solvent-curable, organic solvents, aqueous
BINARY OPERATION
Adjustment for drop size 35-80 picoliters
Productivity Drop size Maximum Frequency
35 pl 30kHz
80 pl 13kHz
Operating temperature range Up to 60°C
Fluid viscosity at jetting 10 to 14 centipoise
Dry weight 160ams
Fig. 4.2-1 Print head
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