Epson AcuLaser C2900N - Control of Paper Size; Paper Detection by the Regi Sensor

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Chapter 6 Principles of Operation
Epson AcuLaser C2900N
Revision B
Confidential
3.3.1 Control of paper size
The printer doesn’t have switches for detecting paper size, and only length of paper is detected by the
Regi Sensor when feeding paper. If printing data and paper size don’t match, error is sent to the ESS.
3.3.2 Paper detection by the Regi Sensor
Since the paper path from the SSI to the Regi Sensor and that from the Paper Tray to the Regi Sensor
are different, the Regi Sensor is provided with the ACTUATOR REGI IN (PL3.2.11) and the ACTUA-
TOR REGI ROLL (PL3.2.8). The ACTUATOR REGI ROLL detects the sheet from the SSI and detects
the tail edge of the paper from the paper tray. The ACTUATOR REGI IN detects the lead edge of the
paper from the paper tray. However, the movement of ACTUATOR REGI IN does not affect that of
ACTUATOR REGI ROLL.
ACTUATOR REGI IN
ACTUATOR REGI IN
ACTUATOR
REGI ROLL
Detection of paper (Tail Edge) From SSI
PAPER
PAPER
PAPER
Regi Sensor
Regi Sensor
Regi Sensor
ACTUATOR
REGI ROLL
ACTUATOR REGI IN
From Paper tray
SPRING
REGI OUT
SPRING ACT REGI
ACTUATOR
REGI OUT
ACTUATOR REGI IN
ACTUATOR REGI ROLL
Regi Sensor
Regi Sensor
Rear view illustration
ACTUATOR REGI IN
ACTUATOR REGI ROLL
Normal Position
Regi Sensor
MiS06037SA