Paper Transport Fan; General Operation - Ricoh MP CW2201 Field Service Manual

7. Detailed Description

Paper Transport Fan

General Operation

The transport fan below the perforated platen plates provides the suction to keep the leading edge flat
during paper registration and cutting, and also keeps the paper flat against the platen during printing.
When paper is fed:
• The pre-registration sensor (1) detects the leading edge of the paper. This turns the transport fan (2)
ON.
• The paper passes the registration standby position (3) above the registration roller.
• When the DRESS sensor (4) detects the leading edge of the paper, the operation of the fan is set to
Duty 1 mode. This pulls the paper down onto the perforated platen plates and keeps completely
flat for cutting and printing.
• The fan remains on until the end of the job.
• The fan duty is adjusted for each phase of this operation as shown below.
814
% Remaining
30
20
10
Pulse Count
180 to 207
208 to 245
More than 246
Roll Dia. (mm)
89
77
65