Chapter 2
2-23
2.3.3
Identifying the Size of the Original
0002-7466
A. Normal Printing
The machine identifies the size of an original with reference to combinations of the size
(width, length) detected on the original tray and the size (length) detected while the original
is being moved.
a. Detecting the Size of the Original in Feed Direction
The machine detects the size of an original in feed direction with reference to the state of
the post-separation sensor (PI7) after the read sensor (PI8) has gone off and the state of the
LGL sensor (PI4)on the tray (LGL/STMT).
The machine measures the length of the time from when the read sensor goes on to when it
goes off to find out the length of the original; it then uses the result of the measurement and
the result of detection made on the original tray to identify the size of the original.
F-2-18
When an original is placed on the original tray, the light-blocking plate operates in keeping
with the detecting lever of the LGL sensor to block the light of the photo interrupter. The
machine identifies whether or not the original is LGL with reference to the LGL sensor
signal (LG_S) and the width of the original. The machine communicates the original size
information to the host machine as soon as the Start key is pressed.
ADF driver PCB
Trailing edge of the original
(small size)
BNG_S
BNG_S_LED
Trailing edge of the original
(large size)
Read standing by position
PI7
PI8
Summary of Contents for DADF-M1
Page 9: ...Chapter 1 Specifications ...
Page 17: ...Chapter 2 Functions ...
Page 66: ...Chapter 2 2 47 F 2 41 PI8 PI9 PI6 PI2 PI3 PI4 PI5 PI1 PI7 ...
Page 70: ...Chapter 3 Parts Replacement Procedure ...
Page 105: ...Chapter 4 Maintenance ...
Page 114: ...Chapter 4 4 7 F 4 4 F 4 5 23 24 25 21 26 22 29 27 28 1 31 ...
Page 156: ...Chapter 4 4 49 F 4 53 FM1 SL2 SL1 M4 M1 CL1 PCB1 M2 M3 VR1 ...
Page 158: ...Chapter 4 4 51 4 5 3 Original Placement led PCB 0003 5540 F 4 55 J201 1 3 ...
Page 159: ...Chapter 5 Error Code ...
Page 165: ...Appendix ...
Page 171: ......
