Lexmark Optra K 4046, Руководство по обслуживанию

Страница: 25 / 156

General Information 1-5
Printer Operation
1. When the printer receives a printing command, the main motor
starts to rotate to initialize the print unit (including the photocon-
ductive drum, developer, cleaning roller, and toner agitator) and
to warm up the fuser. The motor in the printhead also starts to
rotate to initialize the printhead.
2. The pick-up motor rotates counterclockwise to pick up paper
from the paper tray. To print using the multi-function feeder, the
host sends a paper select command. When receiving it, the
pick-up motor rotates clockwise to drive the pick-up roller of the
multi-function feeder. The paper feed motor starts to rotate to
turn the paper feed roller.
3. The pick-up motor stops turning when the bottom edge of the
paper exits the pick roller. The paper feed motor and the main
motor continue to rotate the paper feeder roller, print unit, fuser,
exit roller, and redrive roller until the paper passes through.
4. When the mechanism controller detects the bottom edge of the
paper by the paper exit sensor, it stops both motors. The printer
then waits for the next command.
Paper Feed Drive Mechanism
The main motor and the gear train are mounted on the metal frame.
The power of the pick-up motor gear is distributed to the pick-up
roller of the paper tray or that of the multi-function feeder. Selection
is determined by the rotating direction of the motor.
The power of the paper feed motor is distributed to the paperfeed
roller.
Operation:
1. When the pick-up motor rotates counterclockwise, the power is
transmitted to the pick-up roller of the paper tray through the
center gear of the epicyclic gear train.
2. When the pick-up motor rotates clockwise, the power is trans-
mitted to the pick-up roller of the multi-function feeder through
the circumference gear of the epicyclic gear train.
3. When the paper feed motor rotates counterclockwise, the power