2) When the initial rotation gets ready (Note), the cassette pick-up solenoid (SL1) turns ON for approx. 0.15 sec. Accordingly, the rotation of the main motor is

transferred to the pick-up roller to be rotated.

3) The print paper is at the position to be picked up by the lifting plate, which pushed up according to the spring force. One print paper is picked up by the pick-up

roller rotation and fed into a printer. At that time, the multiple-fed paper is removed by the inclined wall separation and the pad separation.

Initial rotation ready

A condition of the main motor drives, the fixing unit temperature reaches a prescribed temperature, and the scanner motor reaches its prescribed rotational count

after a specified time interval.

2.5.4 Multi-purpose Pickup

2.5.4.1 Manual Fees pick-ip

LBP3370 / LBP3310

The manual feeder mechanism feeds the sheet of paper placed in the manual feeder slot to the inside of the machine.

The presence/absence of paper placed at the slot is checked by the manual feeder paper sensor.

A separation pad is used to prevent multiple feeding.

The following is the sequence of operation the machine uses to pick up paper:

1.When the print command arrives from the video controller, the engine controller turns on the main motor (M1).

2.When the machine enters an initial rotation ready state, the manual feeder pickup solenoid (SL1) goes on for about 0.14 sec.

3.The rotation of the manual feeder pickup roller moves the print paper into the machine, with the separation pad making sure that no more than a single sheet of

paper is fed inside.

2.5.5 Duplex Feeding

2.5.5.1 Outline

LBP3370 / LBP3310

This printer operates the duplex printing by switching the printing side of the paper. That is, after one side is printed, the print paper is fed to the face-down tray

once and re-fed into the duplex feed unit.

The paper path of the duplex printing is illustrated below.

Reversing

sensor

2.5.5.2 Operation

LBP3370 / LBP3310

The duplex feed unit is driven by the main motor (M1).

When the first side of print paper is printed, the paper is once fed to the face-down tray.

The engine controller turns the reversing solenoid (SL3) ON after approx. 0.13 sec. from when the delivery sensor (PS915) detects the trailing edge of the print

paper. It results that the delivery roller rotates reversely and feeds the print paper into the duplex feed unit.

Then the engine controller turns the SL3 OFF at same time of that the reversing sensor (PS915) detects the trailimg edge of the paper.

The oblique roller feeds the print paper as its right side edge contacts with the standard plate.

It allow the paper to be compensated its skew and fed to the registration roller from the duplex feed unit.

Then the second side of the paper is printed and the paper is delivered to the face-down tray.

2-16

Face-down delivery roller

SL3

Delivery sensor

Oblique roller

F-2-20

0018-3133