Canon Cassette Feeding Module-K1, Service Manual

Page: 19 / 38

Chapter 2
2-1
2.1 Pick-Up/Feed Systm
2.1.1 Overiew
0011-1552
The paper picked up from the cassette is fed to the registration roller using the vertical path roller driven by the main motor (M204). The registration roller is not
rotating when paper reaches there, so an arch is formed at the leading of the paper to prevent skewing. The DC controller PCB turns on the registration clutch
(CL203) at the prescribed timing to transfer the main motor rotation to the registration roller, thus feeding the paper to the delivery tray through the transfer, sepa-
ration, fixing, and delivery assemblies.
F-2-1
2.1.2 Cassette Pickup Operation
0011-1553
Rotation of the pickup roller is controlled by the pickup roller drive gear, which transfers the drive power of the main motor (M204) to the pickup roller drive shaft,
and the cassette pickup solenoid (SL202). When the main motor starts rotating, the interlocked relay gear also starts rotating. At this time, the pickup roller drive
gear is not driven because its toothless portion is positioned at the relay gear and therefore these gears are not engaged with each other.
1) The DC controller PCB issues a cassette pickup solenoid drive signal (CSTFD). When the solenoid is turned on, the control arm pushes the cam to rotate the
pickup roller drive gear slightly.
F-2-2
2) When the pickup roller drive gear is engaged with the pickup roller shaft gear, drive power is transferred to the pickup roller shaft gear and consequently the
pickup roller starts rotating.