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)
N
OZZLE 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
B
INARY 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
