Intermediate feeding mechanism
This mechanism feeds the paper fed from the Cassette Assy or MSF Unit to the paper feed mechanism. The paper is fed by the Duplex Unit's Intermediate Roller.
The intermediate feeding mechanism is driven by the ASF Motor. The ASF Motor's drive force is transmitted via the ASF Gear Group to the one way drive mechanism.
The drive force of the one way drive mechanism is transmitted via the Duplex Unit's Intermediate Roller Gear Group to the Intermediate Roller.
ASF Motor's rotational directions and the operation of the intermediate feeding mechanism
| PF Motor's rotational direction | Clockwise | Counterclockwise | |
|---|---|---|---|
| Operation of the intermediate feeding mechanism | Normal feeding | Normal feeding | |
One way drive mechanism
There are two drive paths from the ASF Motor to the one way drive mechanism, one is the path via the ASF Compound Gear A, Spur Gear (1), and Spur Gear (2) to the Clutch Gear A, and the other is the path via the ASF Compound Gear A and Spur Gear (3) and to the Clutch Gear B. Because of this mechanism, the Clutch Gear A and Clutch Gear B rotates in the directions opposite to each other.
Because of this mechanism, the Clutch Gear A and Clutch Gear B rotates in the directions opposite to each other.
ASF Motor's rotational directions and Clutch Gear A/B's rotational directions
| PF Motor's rotational direction | Clockwise | Counterclockwise |
|---|---|---|
| Clutch Gear A's rotational direction | Counterclockwise | Clockwise |
| Clutch Gear B's rotational direction | Clockwise | Counterclockwise |
The shafts on the Clutch Gear A/B, the One Way Clutch is mounted. Regardless of the ASF Motor's rotational directions, they rotate the Intermediate Roller in the feeding direction (one way).
When the ASF Motor rotates clockwise, its rotational direction is the same as the engaging direction of the One Way Clutch mounted on the Clutch Gear B, so the Clutch Gear B rotates the ASF Driven Shaft and transmits the ASF Motor's drive force to the ASF Compound Gear B. Meanwhile, the Clutch Gear A rotates in the rotational direction opposite to the engaging direction of the One Way Clutch, so it does not transmit any drive force.
When the ASF Motor rotates counterclockwise*1 its rotational direction is the same as the engaging direction of the One Way Clutch mounted on the Clutch Gear A so the Clutch Gear A rotates the ASF Driven Shaft and transmits the ASF Motor's drive force to the ASF Compound Gear B.
Meanwhile, the Clutch Gear B rotates in the rotational direction opposite to the engaging direction of the One Way Clutch, so it does not transmit any drive force.
*1: Rotational direction for skew correction or when operating in synchronization. See Paper Feed Mechanism for the details.
