*1: After a shift to standby, the fixing target temperature is decreased in 5-deg C increments at specific time intervals. When a specific temperature is reached, the

fixing heater and the fixing motor are turned on and off to maintain the temperature.

Interval

WMUPR (warm-up)

CNTR (control rotation)

PSTBY (print standby)

3.2.3 Basic Sequence of Operation (at power-on; high-humidity start-up mode)

iR5065 / iR 5055 / iR5075 / / /

Main motor

(M2)

Drum motor

(M1)

Pre-exposure

LED (LED1)

Primary charging

Laser

Developing clutch

(CL1)

Developing bias

(DC)

Developing bias

(AC)

Bias roller

Pre-transfer

charging (DC)

Pre-transfer

charging (AC)

Transfer charging

Separation

charging (DC)

Separation

charging (AC)

Fixing motor

(M3)

Fixing heater

(IH)

*1: After a shift to standby, the fixing target temperature is decreased in 5-deg C increments at specific time intervals. When a specific temperature is reached, the

3-4

Main power

switch ON

WMUPR

60 sec (approx.)

Description

From when the main power is turned on until the fixing roller temperature reaches a

specific level and, in addition, the potential control of the photosensitive drum ends, and as much as 60 sec passes from

power-on.

The machine executes potential control of the photosensitive drum. For each mode (i.e., copier, printer), the machine

executes VD control (to adjust the primary discharge current) and Vl control (to adjust the laser output), and determines Vdc

(developing bias).