Lifter Operation; Operation - Canon NP6251 Service Manual

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CHAPTER 5 PICK-UP/FEEDING SYSTEM

B. Lifter Operation

When the deck is slid into the pedestal, the deck open/closed sensor (PS38/PS40)

turns on and, at the same time, the pick-up roller moves down and the light-blocking

plate moves away from the deck lifter position sensor (PS31/PS34). This condition turns

on the lifter drive motor (M18/M19), and lets the drive of the pick-up motor (M2) to the

take-up shaft; the lifter then starts to move up.

The lifter stops where the deck lifter position sensor (PS31/PS34) can check the top

surface of the copy paper.

The deck lifter limit sensor (PS37/PS39) is provided in consideration of such cases

as when the lifter fails to stop moving up after the sensor arm has blocked the deck lifter

position sensor (PS31/PS34).

Upon reaching the limit, the lifter is held up by the work of a gear.

When the deck is detached from the copier, the cable take-up gear disengages from

the gear, and the lifter starts to move down on its own weight.

Pick-up motor

Deck lifter drive

Lifter limiter

detecting lever

Pick-up roller

Lifter limit

Lifter position

Paper sensor

Figure 5-304

CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)

Paper detecting

Feeding rollers

Separation roller

Pick-up roller

closed sensor

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