Printing Process Overview; Image Creation - Samsung SCX-8030ND Series Service Manual

2.5 Image creation

This section describes the image creation process use
2.5.1 Printing process overv
This mono printing system includes the LSU with a las
This machine uses single Imaging unit and dual laser
Drum unit and Development unit. The Drum unit has a Drum unit and Development unit The Drum unit has a
a light-guide ( which transfers the LED's light in the m
The OPC drum[A] is charged with a negative voltage b
LSU (Laser Scanning unit)[B]. The light produced by a
surface of the OPC drum. The negatively charged ton
electric filed. The toners(real image) on the OPC drum
applied to the transfer roller[c].
1. Charging the OPC drum: The scorotron gives the
2. Laser exposure: Light produced by a laser diode ir
mirrors .
3. Development: This machine uses a dual-compone
negatively charged toner to the latent image on the dru
4. Transfer: The transfer rollers opposite the OPC dr
media (e.g. paper, OHP film, etc).
5. Cleaning for OPC drum: The cleaning blade remov
transfer to the paper.
6. Quenching for OPC drum: Quenching is done by g
lamps at the end of every job.
Service Manual
SCX-8030/8040 series
2. Product D Description
ed by the printer.
view
ser beams, a imaging unit and transfer unit.
beams for mono printing. The Imaging unit consists of
an OPC drum, a scorotron (which charges the OPC), an OPC drum a scorotron (which charges the OPC)
machine) and cleaning blade.
by the scorotron and is exposed by the light from the
a laser creates a latent image by discharging on the
ners are attracted to the latent image due to and
m are moved to the transfer media by the positive bias
e drum negative charges.
rradiates the charged OPC through the lens and
nt development system . The magnetic roller carries
um surface.
ums transfer toner from the drums to the transfer
ves remaining toners on the drum surface after image
g y illuminating the whole area of the drum with the LED
2-2 2-2 29 29
g
SAMSUNG ELECTRONICS
Version 0.05