Service manual
Operating Principles
EPL-5600/ActionLaser
1600 Service
hfhual
Lower Paper Cassette
A maximum of 250 sheets can be loaded in the 250-sheet lower paper cassette (option). The
cassette must be capable of handling the paper size, however. (The lower paper cassette unit can
hold letter or A4 paper.)
The driving force for paper feeding and transport is from the transmission gear. All electrical
controls are performed on the printer side through the coupling comector.
Ca
Paper
te
Figure 2-4. Paper Feeding from the Lower Paper Cassette
2.1.1.2 Drum Charge
Drum charge is the process of charging the
PC
drum with static electricity before
Iaser
exposure.
This printer uses a brush charge method, rather than the corona charge method, to charge the
drum. In the brush charge method, there is no generation of ozone as a result of corom discharge.
This method also allows the drum to be charged at a low voltage, because a direct electric load is
applied to the PC drum.
I
Charged surface:
approx.
-750V
I
PC Drum
Imaging Cartridge
#+-
-1.2KV
A*
approx.
&
GND B
-1.2KV
-
a
T
-300V
c
to
-375V
A: Drum Charge Bias B: Drum Ground
C: Developing Bias D: Doctor Blade Bias
Figure 2-5. Drum Charge
2-4
Rev.
A