Ricoh G104, Service Manual

Page: 283 / 601

IMAGE TRANSFER
SM 6-55 G104
Detailed
Des
cription
s
6.7.3 TRANSFER ROLLER UNIT
[A] Transfer roller
[B] Registration roller
[C] Transfer belt
[D] OPC [E] Belt transfer roller
[F] Transfer belt drive roller
[G] Discharge plate
Transfer from the belt
The belt transfer roller [E] is supplied a positive voltage, and this voltage pulls the
toner from OPC [D] to the transfer belt.
After all four layers of toner are transferred to the transfer belt [C], the registration
roller [B] turns on and feeds the paper to the transfer roller [A]. Paper feed is timed
to align the leading edge of the toner image on the belt at 4 mm from the leading
edge of the paper. The paper moves at the same speed as the transfer belt.
Image transfer
Charged with a negative voltage, the transfer belt drive roller [F] pushes the toner
from the transfer belt to the paper. This voltage is automatically corrected for
ambient temperature and humidity, print speed, and paper type.
To clean the transfer roller, positive and negative voltages are applied to the
transfer belt drive roller to pull toner particles from the transfer roller to the belt. The
belt-cleaning mechanism then removes this toner from the belt.
G105D116.WMF
[A]
[D]
[F]
[C]
[B]
[E]
[G]
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA