Power Supply; Circuit; Paper Transfer Roller Bias; Discharge Plate - Ricoh B051 Service Manual

PAPER TRANSFER AND SEPARATION

6.11.3 POWER SUPPLY

Circuit

High voltage supply [A] → Terminal [B] → Paper transfer roller shaft [C]
[A]: High voltage supply
[B]: Terminal
[C]: Paper transfer roller shaft
[D]: Temperature-humidity sensor
(inside the rear-right cover)
[E]: Discharge plate (negative
charge)

Paper Transfer Roller Bias

Normally, a constant current is applied to the paper transfer roller shaft [C].
The current varies with paper type, size, and thickness as well as humidity.

Discharge Plate

The discharge plate [E] discharges the remaining charge on the paper going past
the paper transfer roller. This helps the paper separate from the image transfer belt.

Temperature/Humidity Control

The temperature-humidity sensor [D] is inside the rear-right cover. The sensor
output is used to control the current for the paper transfer roller.
The temperature and humidity can be read with SP2-912.
B051/B052
CÓPIA NÃO CONTROLADA
[E]
6-60
CÓPIA NÃO CONTROLADA
[C]
[A]
B051D402.WMF
[B]
[D]
SM