According to the
working theory of inkject printer, there are mainly two categories
1) The CIJ Type type inkjet printer is called continue ink
jet printer type ( CIJ type for short) Its working theory
is that the inks are ejected continuously from a single spray
head and form ink dots after crystal oscillating. The dots
are to be scanned to characters on the surface of moving object
after electrification and high voltag deflection.
2) Drop on demand type inkjet printer. ( DOD type for short)
Its working theory is that the sprayhead is composed of lots
of high-precision valves and the valves corresponding to the
fonts will open or close timely when printing. The inks will
be ejected depending on the internal constant pressure, which
will form characters or pictures on the surface of moving
objects.
| Item |
CIJ Type ( Dot Matrix Type) Printer |
DOD Type High-resolution Printer |
| Character Height |
1.5mm--13mm |
1.0mm--18mm |
| Font type |
Can only print dot matrix font (Pin point type) |
Can print both dot matrix font (Pin point type) and
high resolution font( Print Font). It can even print any
fonts available in compouter. |
| Print Speed |
When printing 5*5 dot matrix, it’s very quick. When
printing Chinese & pictures with 16 dot matrix, it
becomes slower. |
Not influenced by dot matrix fonts with maximum speed
35m/minute |
| Ink Darkness |
The ink darkness isn’t consistent because inks are recyclable
during operation |
The ink darkness is consistent because inks are not
recyclable during operation. |
| Operating Cost |
Need to add dilution. It’s a waste due to the continuous
volatilization. |
No need to add dilution. Lower operating cost than CIJ |
| Inking System |
Dust and moisture might be introduced into the internal
machines by the recycling inking system, thus might result
in machine failures |
Inks are not recycled .Good sealing for inking system.
No ink pollution. |
| Failure Rate |
Ink dots needs to be controlled by high-precison processes
such as crystal oscillating, electrification and high
voltage deflection. Higher failure rate. |
Inks are ejected directly with its own pressure,leading
to lower failure rate. |
| User Interface |
Complicated operating sytem. Need to adjust precise
parameters to achieve proper performance |
Simple & reliable operating system.
Easy Maintenance
|
| Environment Influence |
Huge amount of organic solvents is volatile during the
ink recycling, producing disgusting odor and pollute the
environment. |
Non-recycable inks and use environment friendly inks.No
irritating odor.Minimum influence on environment |
| Gas Source Supply |
Need to use external gas source or equipped with gear
pump. . High demand on the pressure and cleanliness. The
quality of gas source directly links to the machine life.。 |
It’s equipped with pressure system. The pressure for
inks are consistant, plus the clean quality, which ensure
the normal operation of printer. |
| Sealing Performance |
Gear pump type ink jet printer. Need cooling when the
motor is running at high speed. Dust and moisture might
be introduced into the internal machines because it’s
not sealed |
No high-power device inside the machine. No need for
cooling when working. Good sealing system. Not influenced
by the environment. |
| Maintenance |
Gear pump is easily wear and needs to be replaced regularly.
And it cannot be repaired (Only to be replaced).
Higher maintenance cost.
|
No fragile parts. Relatively lower maintenance cost
compared to CIJ type inkjet printer |
Chinese