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[8] DESK UNIT MECHANISM
SECTION
1. Operation flow chart
A. Paper tray 2 (Normal copy mode)
Paper feed start
<Copier print switch ON>
↓
STEP 01:
JOB command start command reception
•
Transport motor ON
↓
STEP 02:
Paper feed request reception (Preliminary
paper feed command or paper feed
command)
•
Pickup solenoid ON
•
Transport select clutch ON
↓
STEP 03:
Resist sensor 1 (upper) ON
•
Timer A start
Pickup solenoid OFF, resist transport
clutch ON
•
Timer B start
For sending the preliminary paper feed
end command
•
Timer C start (according to paper size)
Transport select clutch OFF timer
↓
STEP 04:
Timer A up
•
Pickup solenoid OFF
•
Resist transport clutch OFF
↓
STEP 05:
Timer B up
•
Preliminary paper feed end command
↓
sending
Preliminary
NO
→ To STEP 08
paper feed
command
YES
↓
•
STEP 06:
Timer C temporal stop
•
Transport select clutch OFF
↓
•
Resist transport clutch OFF
Paper
feed command
signal wait
RECEPTION
→ To STEP 20
↓
•
STEP 07
Timer C restart
•
Transport select clutch ON
↓
•
Resist transport clutch ON
STEP 08:
↓
STEP 09:
Timer C up
•
Transport select clutch OFF
↓
STEP 10:
Resist sensor 1 (Upper) OFF
•
Paper feed end command sending
↓
•
Resist transport clutch OFF timer start
STEP 11:
↓
STEP 12:
Resist transport clutch OFF, timer up
•
Resist transport clutch OFF
↓
JOB
NO
command
→ To STEP 02
reception
YES
↓
STEP 13:
Paper feed operation end
•
STEP 20:
After reception of the paper feed command,
the main body transport clutch (trc signal) is
monitored in parallel with operations of STEP
07 or later.
↓
STEP 21:
Copier transport clutch (trc signal) OFF
confirming
↓
STEP 22:
Copier transport clutch (trc signal) ON
confirming
↓
STEP 23:
Copier transport clutch (trc signal) OFF
confirming
•
8 – 1
Transport motor OFF
Resist transport clutch OFF
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