The machine identifies the point of reading with reference to the pulses generated by the read motor after the read sensor goes on. When the leading edge of the

original reaches the point of reading, the machine sends the image leading signal to the host machine so that the latte can start reading operation.

In stream reading mode, the scanner of the host machine is fixed in place, and the original is scanned while it is being moved over the reading glass. The images

that are read are stored in the memory of the host machine.

2.4.2 Pickup Unit and the Stopper

The pickup unit consists of a pickup roller and a separation roller. When the Start key is pressed or the original pickup signal arrives, the pickup motor (M2) starts

to rotate in reverse to move down the pickup unit, and the pickup roller and th separation roller start to rotate to pick up an original. The separation pad and the

separation plate are used to make sure that no more than one original is picked up and fed at time of pickup.