Epson AcuLaser C2900N Service Manual page 586

Chapter 6 Principles of Operation
- SENSOR PHOTO (Regi Sensor: PL3.2.13)
The Regi Sensor detects that the lead edge of the print medium has reached the registration sec-
tion. (No paper: Sensor beam is blocked)
When the print medium is fed from the SSI, the Regi Sensor measures the sheet length (size).
The duration for which the Regi Sensor is ON is converted into the paper length.
Normal Position
Regi Sensor
Epson AcuLaser C2900N
Regi Sensor
ACTUATOR REGI IN
(No Paper Position)
6 - 29
ACTUATOR REGI IN
From Paper tray
ACTUATOR REGI IN
Regi Sensor
PAPER
Revision B
MiS06035SA
Confidential