Controls (Dadf); Document Detection; Outline - Canon H1 Service Manual

2
Technology > Controls (DADF) > Document Detection > Outline
Start of reading of reverse
side of second document sheet
End of reading of reverse
side of second document sheet
Stop after feeding the second
document sheet to reversal
position
2 Technology > Controls (DADF) > Document Detection > Outline
Removal of idle reversal registration
loop of second document sheet and
release of re-pickup/delivery roller
Pressurization of second document
sheet delivery roller
Completion of delivery of second
document sheet and end of job
F-2-32

Controls (DADF)

Document Detection

■ Outline

This machine detects a document using either of the two methods depending on the print
mode.
• Normal print mode (other than mixed size print mode and banner paper mode)
• Mixed size print mode and banner paper mode
Normal print mode (other than mixed size print mode and banner paper mode)
In the normal print mode, the following Three document detection functions are used:
Function
Document presence/absence Detects whether there is a document on
detection the Detects whether there is a document
on the
Initial document Longitudinal Detects the length of the document placed
sizeabsence direction on the document pickup tray
detection
Lateral Detects the width of the document placed
direction on the document pickup tray.
Mixed size print mode and banner paper mode
In the mixed size print mode and banner paper mode, the following three document
detection functions are used:
Function
Document presence/ Detects whether there is a document on the
absence detection document pickup tray.
Document length Detects the document length according to
detection the distance from the position where the
read sensor (SR2) turns on to the position
where the read sensor (SR2) turns off.
Description Description
Document set sensor
(SR5)
Document length
sensor
1/2(SR7/SR10)
Document width
volume 1(VR1)
Description Description
Document set sensor
(SR5)
Read sensor(SR2)
2-19
T-2-11
T-2-12
2-19