Stay ahead. With Agfa Global Services. :Anapurna M4F - Operator Manual
Maintenance - Maintenance Routines 45
3.5 Print heads and negative pressure.
a. The print heads.
The :Anapurna M4F is equiped with 6 Konica Minolta
heads. The KM512 product range consists of type L,
M, S, corresponding to unit drop volume capabilities
of 42pl, 14 pl and 4pl respectively. Further more, the
KM512 is also divided into H type and N type, which
stands for “with heater” and without “heater”.
The :Anapurna M4F is using the KM512 MN heads (14pl without heater), suitable for
high quality 720 dpi multi-pass printing. Every print head is made up of two nozzle
rows, each containing 256 jets, resulting in a physical resolution of 360 dpi.
The different print heads are positioned on the head base plate in a V-shape, every
color having its own designated place:
b. The negative pressure system.
The negative air pressure system is keeping the print heads from dripping. Without
thissystem,thelawsofgravitywillmakesurethattheinkwillowoutoftheprint
heads and you will not be able to print.
The negative pressure is generated by a venturi system which converts positive
pressure in negative pressure. The amount of pressure is controlled by the pressure
regulating valve and is displayed on the pressure gauge. Both are located on the
left side of the shuttle. The normal pressure setting for the :Anapurna M4F is -.036.
A too high setting will cause one or more missing nozzles. The ink will be sucked
in side the printhead. If the pressure is too low, gravity starts doing its job and ink
will start dripping out of the heads, possible creating pooling. This is a condition of
K C M Y
¼ of printing head
How to change the value:
To Next Page
Loading...
