Ricoh D124, Detailed Descriptions Manual

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Detailed Descriptions 65 D124
4.2 ROLL UNIT OPERATION
4.2.1 GENERAL OPERATION OF ROLL FEEDER UNITS
Just after the machine power is turned on, the nip [1] between the roll feed roller [2]
and its idle roller is closed. When the user installs a roll, the machine initializes the roll
as follows:

When the paper entrance sensor [3] detects the leading edge, the roll feed motor
[4] and roll feed clutch [7] rotate together to feed the paper until the
pre-registration sensor [5] detects its leading edge.

Next, the vertical feed motor [not shown] on the left side of the machine turns on.

When the DRESS sensor [6] detects the leading edge, the motors and roll feed
clutch turn off and the machine checks for paper skew.

Then the roll feed motor and roll feed clutch turn [7] on and reverse feed.

This process opens the nip [1] between the roll feed roller and its idle roller.

The registration roller [8] now has the paper and the vertical feed motor controls
paper feed.

The vertical feed motor feeds the paper to the registration standby position below
the registration roller [8].

The roll feed motor [4] reverse feeds with the clutch [7] off. This rotates the roll
spool in reverse to take up slack.