Detecting The Size Of Originals - Canon iR1600 Service Manual

CHAPTER 3 IMAGE READING/PROCESSING SYSTEM

3.3 Detecting the Size of Originals

The machine uses combinations of states of original size sensors to detect the size of an
original with reference to the following table:
• Unchanged : The machine reads the output levels of the sensors at intervals of 0.125
sec after the copyboard cover open/closed sensor goes ON, and there is
no change in the output level (detecting an original).
• Changed : The machine reads the output levels of the sensors at intervals of 0.125
sec after the copyboard cover open/closed sensor goes ON, and there is
change in the output level (not detecting an original).
A/B-Configuration
Original
size
A3
B4
A4R
A4
B5
B5R
None
3-6
Original size sensor
PS114
Unchanged Unchanged
Changed Unchanged Unchanged Unchanged
Changed Changed
Unchanged Unchanged
Changed Unchanged
Changed Changed
Changed Changed
Inch-configuration
Original
size
PS115
11"X17" Unchanged
LGL Changed
LTR-R Changed
LTR Unchanged
None Changed
A-configuration
Original size sensor
Original
size
PS115
A3 Unchanged
A4R Changed
A4 Unchanged
None Changed
T03-303-01
COPYRIGHT© 2002 CANON INC.
PS115 PS116
Unchanged Unchanged
Unchanged Unchanged
Changed
Changed
Unchanged
Changed
Original size sensor
PS116
Unchanged Unchanged
Unchanged Unchanged
Unchanged Changed
Changed Changed
Changed Changed
PS116
Unchanged
Unchanged
Changed
Changed
2000
PS117
Changed
Changed
Changed
Changed
PS117
CANON iR1600/iR2000 REV.1 JAN. 2002