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Scanner Interface
A.3.5.2 Read operation
Figures A.3.3 and A.3.4 show the command/response sequences for the read operation.
CONTROL
Control register
setting
START
IMAGE MODE
SENSE
READ
IMAGE MODE
SENSE
RETURN
SENSE
Notes:
1. The CONTROL command can be issued more than once.
2. The response to the RETURN SENSE command is made after returning.
3. The RETURN SENSE or IMAGE MODE SENSE command need not always be issued.
Figure A.3.3 Simplex read operation sequence (automatic mode)
Appendix A-100
Host machine
Document size
report
Scanner
Command processing
Normal status
Flatbed
Normal status
Image status
Document
reading
Read
complete
Image status
Return
Normal status
ADF
Paper feed start
Document
size
detection
VGATE ON
Document
reading
VGATE
OFF
Paper
eject
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