Transport Fan Duty Adjustment - Ricoh D124 Detailed Descriptions Manual

4.5.2 TRANSPORT FAN DUTY ADJUSTMENT

The transport fan below the perforated platen plates provides enough suction to keep
the leading edge flat during paper registration and cutting, and also keeps the paper
flat against the platen during printing. The machine adjusts the duty of the transport
fan automatically for the size and type of paper selected for the job.
When paper is fed:
 The pre-registration sensor (1) detects the leading edge of the paper and turns on
the fan (2).
 The DRESS sensor (3) on the left side of the carriage goes ON when it detects the
leading edge of the paper and switches operation of the fan to Duty 1.
 The paper transport fan remains in the Duty 1 phase while the paper feeds 79
mm past the registration standby position (4). This provides maximum suction to
keep the leading edge of the paper flat.
 When the leading edge of the paper exceeds 79 mm of feed, the motor enters the
Duty 2 phase.
 When the paper reaches the cutting position, the fan enters the Duty 3 phase.
 When the cutter (5) reaches the left side of the machine after cutting the paper, the
cutter return switch switches on, and the cutter motor reverses to return the cutter
to its home position on the right side of the machine.
D124
No.
1 Pre-registration sensor
2 Paper transport fan
3 DRESS sensor
4 Registration standby position
5 Cutter
Item
82 Detailed Descriptions