Chapter 1010-110.1 Basic Construcion10.1.1 Outline 0006-3574The ADF is a feeding device used exclusively for stream reading, and its series of operations (original pickup,feeding, delivery) is performed using the drive of the ADF motor (M3).An original picked from the original placement assembly is controlled so that its movement will match the read starttiming of the host machine's contact sensor. Then, the original is moved as far as stream reading position, read by thecontact sensor (for collection of analog image data), and sent to the delivery assembly.The ADF has 3 sensors to monitor the state of the original. The names and the functions of the sensors are as follows:T-10-1F-10-1Symbol Sensor FunctionPS6 Original sensor Detects the presence/absence of an original in the originalplacement assembly.PS7 RegistrationsensorDetects the timing at which the leading edge of an original ismade to arch at the ADF registration roller.PS8 Original deliverysensorMonitors the movement of the original in the original deliveryassembly.PS7PS6PS8