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Cassette Pickup Control
The DC Controller rotates the Pickup Roller by rotating the Pickup Motor (M2).
The Pickup Arm is lifted and lowered to feed the paper by rotating the Pickup Cam with the Pickup Solenoid (SL1).
Cassette Double Feed Prevention Mechanism
■ Overview
This machine employs the retard separation method for the cassette pickup double feed prevention mechanism.
The retard separation method of this machine is a method that prevents paper double feeds by using the Cassette Separation
Rollers without drive. The Cassette Separation Rollers are driven and rotated by the Cassette Feed Roller.
● At Normal Time
The Cassette Separation Roller is driven by the Cassette Feed Roller drive via paper. This causes the Cassette Separation Rollers
to rotate in the feed direction.
● During Double Feed
Since the friction force between sheets of paper becomes weaker when there are multiple sheets of paper, the Cassette Feed
Roller drive force transmitted to the Cassette Separation Roller becomes extremely weak. Since force suppressing rotation is
applied to the Cassette Separation Rollers of this machine, this mechanism does not allow rotation by the weak drive force
transmitted from the Cassette Feed Roller during double feed. The Separation Rollers therefore do not rotate and do not pickup
double feed paper.
Paper Detection
Description
Paper presence/absence on the Cassette is detected by the Cassette Paper Sensor(PS1).
Multi-purpose Tray Pickup Control
The Multi-purpose Tray pickup feeds paper from the Multi-purpose Tray one sheet at a time into the machine.
The following describes the operation of the Multi-purpose Tray pickup.
1. When a print command is input from the Main Controller, the DC Controller rotates the Pickup Motor (M2).
2. When the DC Controller turns the Multi-purpose Tray Pickup Solenoid (SL3) on, the Multi-purpose Tray Pickup Roller rotates
and paper is picked up.
Cassette Feed Roller
Paper
Lifting Plate
<At normal condition>
41
Cassette
Separation Roller
The roller does not rotate.
<When double feeding occurred>
2. Technical Explanation (Device)
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Troubleshooting
