Continuous ink jet is one of the two most dominant ink jet technologies used today in industrial coding applications. CIJ advantages are that it adheres to almost any packaging material and can be used even on curved surfaces. It can print at high speeds and is extremely reliable with low maintenance requirements.
Continuous inkjet printers are one of the world's
oldest printing technologies. They are frequently used in demanding situations
where speed, reliability, and flexibility are required. CIJ printers offer a
number of benefits and advantages which is the primary reason that many
companies rely on CIJ technology.
In the printing process, a stream of CIJ ink
is broken into extremely small droplets inside a chamber and charged with an
electrical pulse from a non-conducting material like a quartz crystal or
ceramic. Any excess ink is re-circulated by the printer and returned to the ink
tank source.
Mechanical stress or vibration is then
applied to force the charged droplets to pass through an electrostatic field
located between deflector plates. The correct positioning on the substrate is
determined by the speed and charge applied to the droplets which then land and
adhere to the substrate without any part of the print head making actual contact.
Up to as many as 120,000 microscopic droplets
of ink, each measuring about half the diameter of a human hair, are expelled
each second. This makes the process extremely versatile and capable of adhering
to almost any surface.
The printers can code onto numerous
materials without regard to size, shape, porosity, or texture. The base solvent
of CIJ ink also allows it to dry quickly, making the CIJ process ideal for
products that move quickly on a production line.
The continuous inkjet printing process is used
mainly in printing variable information onto individual products, including
dates, times, batch codes, product names, text and logos. It is especially useful
in providing data that makes the products traceable and for complying with
continually stricter industrial legislation.
A major advantage of CIJ technology is its
versatility in being able to be used in many different situations where the high
velocity of the ink droplets permit a greater distance to exist between the
print head and the substrate. CIJ printers can also run for many hours before
needing service when compared to other technologies. This tends to lower costs
considerably.
CIJ printing is used in the
food and beverage industry, cosmetics, electronics, auto construction and
many other industrial sectors wherever demanding marking and coding is
required. The printers have proven to be simple and reliable solutions for
numerous industrial applications because they can easily be used for marking or
coding almost any material, at practically any speed and orientation desired, and
onto almost any material disregarding its shape, size or texture.
Numerous different formulations of CGI ink
can be used including those with low evaporation rates and in a wide range of
colors. With normally fast drying times, the printers provide an ideal solution
for fast-moving production lines.
The advantages of continuous ink jet
technology should continue to be more and more popular in the foreseeable
future of industrial manufacturing.
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