Basic Construction; Overview; Drive Mechanism - Canon LASER CLASS 810 Service Manual

5.1 Basic Construction

5.1.1 Overview

The ADF of this machine is a document feeder designed only for stream reading. It performs document pickup, transport, and delivery operations sequentially with
the aid of the ADF pickup motor (M2001) and read motor (M2002). Feed of the document supplied from the document setting (placement) section is controlled by
the ADF registration roller so that the document is ready at the same time for image reading by the contact image sensor in the main unit. The document transported
to the stream reading position is read as analog image data, and then transported to the delivery section.
The ADF has five sensors for document status monitoring. Names and roles of these sensors are summarized below.
Symbol Sensor name
SR2001 Document set sensor
SR2002 Document edge sensor
SR2003 Registration sensor
SR2004 Delivery sensor
SR2005 Separation rear sensor
SR2003

5.1.2 Drive Mechanism

Role
Detects presence/absence of document on the document set section.
Detects the document transport state to trigger scanning.
Detects the timing of forming a loop at the leading edge of the document using the ADF registration
roller.
Detects the paper delivery state.
Detects the paper transport state to trigger supply of the next document.
SR2001
SR2005
SR2002
SR2004
M2002
M2001
Symbol
CL2002
SL2003
M2001
M2002
T-5-1
F-5-1
F-5-2
Name
Pickup clutch
Roller release solenoid
ADF pickup motor
Read motor
Chapter 5
0017-1766
0017-1767
5-1