Ricoh PRIPORT VT 2000 Series Service Manual page 68

28 February '91
2.7.2 Sub-scanning Enlargement
Enlargement in the sub-scanning direction is performed by decreasing the
original transportation speed.
When the enlargement signal is sent from the main control board, the
frequency of the pulses from the pulse generator decreases. (The pulse
length increases.) The drive pulse generator then decreases the frequency
of the motor drive pulses to decrease the motor rotation speed.
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