User Guide

Cassette pickup

The product picks up one sheet of paper from the cassette. The following figure shows the cassette

pickup mechanism. Both trays have the same mechanism.

Figure 1-28 Cassette pickup mechanism

Cassette separation roller

Feed roller

Cassette pickup roller

Cassette pickup clutch

DC controller

Drum motor

The operational sequence of the cassette pickup is as follows:

1. The DC controller rotates the drum motor when it receives a print command from the formatter.

2. The feed roller rotates.

3. The cassette pickup solenoid is driven at a specified timing.

4. The cassette pickup roller rotates and picks up the top paper.

5. The cassette separation roller removes any multiple-fed sheets.

6. One sheet of paper is fed into the product.

Cassette media-size detection and cassette-presence detection

The DC controller determines the size of the paper loaded in the cassette and also whether the cassette

is installed in the product by monitoring the cassette media-width switch and the cassette media-end

switch.

The cassette media-width switch and the cassette media-end switch contain three sub-switches each. The

DC controller detects the size of paper and the presence of the cassette according to the combination

of the switches and notifies the formatter.

38 Chapter 1 Theory of operation ENWW