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Operations Lower Feeder Unit Theory of Operation
2-4
II Composition/Operation
3.1.2 Feed Roller/Vertical Conveyance Roller control
• The Feed Roller and Vertical Conveyance Roller are rotated, which feeds paper from the
Lower Feeder Unit and conveys it further into the inside of the machine.
1. The Lower Feeder Motor (M1 PF) is energized to turn the Vertical Conveyance Roller.
2. The Lower Feeder Paper Feed Clutch (CL1 PF) is energized to turn the Feed Roller.
3. The paper is fed in by the Feed Roller.
4. The paper fed in by the Feed Roller is conveyed onto the Synchronizing Roller of the
machine by the Vertical Conveyance Roller.
5. When the Lower Feeder Paper Feed Sensor (PC3 PF) is activated and then the paper
is conveyed onto a predetermined point in the paper path, the Lower Feeder Paper
Feed Clutch (CL1 PF) is de-energized, thus bringing the Feed Roller to a stop. The Ver-
tical Conveyance Roller thereafter takes charge of conveying paper further.
6. When the trailing edge of the last sheet of paper moves past the Synchronizing Roller
Sensor (PC4), the Lower Feeder Motor (M1 PF) is de-energized to bring the Vertical
Transport Roller to a stop.
4537to2502c1
Lower Feeder Paper
Feed Clutch (CL1 PF)
Feed Roller
Separation Roller
Lower Feeder Motor
(M1 PF)
Vertical Transport Roller
Unblocked
Blocked
Energized
De-energized
Energized
De-energized
Lower Feeder Motor
(M1 PF)
Lower Feeder Paper Feed
Sensor (PC3 PF)
Lower Feeder Paper Feed
Clutch (CL1 PF)
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