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B. Paper Pick-up
1. Pick-up operation
This printer conducts paper pick-up operation by lifting the paper to the paper pick-up position
with the lifter and lowering the rotating cassette pick-up roller to the paper level.
Paper pick-up operation is conducted only when the multi-input tray driver receives the pick-
up command from the option controller. The pick-up roller is lowered to the paper level by the
rotational force of the main motor (MT1). At the same time, the pick-up roller is rotated by the
rotational force of the pick-up motor.
Paper pick-up operation is conducted as follows.
On receiving the /PRNT from the video controller PCB, the DC controller PCB runs the main
motor (MT1) and the pick-up motor (SMT1). When the cassette pick-up solenoid (SL1) is turned
ON, the main motor rotates the cassette pick-up cam via the gear to drive the shaft drive arm.
At the same time, the rotational force of the pick-up motor is transmitted to the cassette pick-
up roller via the feed roller gear. As a result, the rotating cassette pick-up roller goes down to
the paper level, picks up a sheet of paper, goes up to the paper pick-up standby position, and
stops rotation.
When the pick-up motor rotates clockwise, the paper is picked up from the upper cassette by
rotating the cassette pick-up roller, feed roller 1 and separation roller of the upper cassette.
When the pick-up motor rotates counterclockwise, the paper is picked up from the lower cas-
sette by driving the cassette pick-up roller, feed roller 1 and separation roller of the lower cas-
sette.
Figure 2-5-3
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CHAPTER 2
Pick-up roller
Feed roller 1
Separation roller
Pick-up roller shaft
Cassette pick-up cam
Cassettte pick-up
solenoid
Lift-up cam
Print paper
Pick-up motor drive
Main motor drive
Gear
Lift-up release arm
Pick-up roller shaft fixing arm
Feed roller gear
Shaft drive arm
Paper lifting plate