FLORA pp2512uv - Ink Supply and Negative Pressure System

Victor Xu Page 32 12 Jan. 2011
Copyright 2011 © Shenzhen Runtianzhi Image Technology, Co., Ltd.
http://www.floradigital.com
lower limit switch and the upper limit switch control the carriage highest and lowest allowable
height the carriage can move respectively.
4.5 Ink supply& negative pressure system
4.5.1 Ink supply system
The ink Bottle/Barrel serves as the main reservoir for ink supply, should be refilled in a timely
manner so continuous supply of ink will not be interrupted during printing. The level of ink inside
the bottle/barrel can be monitored visually or using the buzzer system. Refilling is done manually.
The ink pumps suck and discharge the ink into the secondary ink tank. A five-micron filter is
being provided to prevent the secondary tank from being contaminated by unwanted particles,
which are inherent in the ink. Ink level sensor inside the secondary ink tank sends an open or close
contact signal to the Print head control board and Ink control board to control the operation of the
pumps. An optional micro filter is added to enhance the filtering of ink before it flows into the print
heads.
Every time the print heads eject/fire ink droplets, the ink flows and fills the space left by
droplets. A negative pressure system is responsible for holding the ink from flowing out of the print
head nozzles.
Last Chance
Filter
Secondary
Ink Tank
Ink Filter
(Barrel Type)
Ink Level
Sensor
Negative
Pressure
Pump
Ink Control System
Ink Barrel
Printhead
Control Board
Servo Driver
Control Board
M
Ink
Pump
Enlarged View
Carriage minimum
height limit switch
Carriage maximum
height limit switch
Switch
actuators
Right Side of the Carriage