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Thermal Jet
Appendix B: Theory of Operation
5780-320 Operations Manual Rev C
Page 27
IJ3000-ES
Functional Description
The IJ3000-ES Ink Jet System prints text, autocodes (such as product counts or time and
date stamps), bar codes, and/or graphics onto products as they travel by conveyor past
stationary print heads. Print can be on any one of, or a combination of, the product's sides.
The conveyor speed is monitored using a variable speed encoder or a built-in fixed speed
encoder. Products are detected using a photosensor. The information to be printed is
defined as a message and is programmed into the controller via a user interface.
Controller Features
The IJ3000-ES Controller has a graphical user interface consisting of a color LCD, touch
screen, and 70-key QWERTY keypad. Also housed in the controller are a CPU Board, and
a Display Interface Board.
Power
One 15VDC desktop power supply provides power to the IJ3000-ES.
Battery Backup
- A 3V battery on the CPU Board (BT1) maintains the contents of system
SRAM and keeps the real time clock running during power outages or when the IJ3000-ES
is not plugged into a power outlet.
Please note that power is applied to the IJ3000-ES even when it is "turned off." When
turned off using the OFF button on the keyboard, the IJ3000-ES enters a sleep mode
where it responds to nothing but the ON button. All voltages are present while sleeping.
The only way to completely remove power is to unplug the unit.