Lift Mechanism - Ricoh FT7770 Service Manual

30 April, '89

5. Lift Mechanism

A lift mechanism utilizing torsion springs is provided to make the transport
and inversion unit easy for the operator to lift.
fixed to the middle of the belt unit, which can be lifted, and they are fixed
at the outer ends to the base plate. When the unit is lowered, tension is ap-
plied to the springs, taking up most of the unit's weight.
The disk brake mechanism, consisting of three brake disks and four pressure
plates allows the operator to position the unit at any angle up to 90° from
the exposure glass.
the pressure plates and the brake disks, preventing the unit from falling
down.
The transport unit hinges from the center to apply even pressure when copy-
ing books or other three dimensional objects.
When the belt unit is lifted up, the lift switch is activated, disabling the
DF's operation.
The brake spring constantly applies pressure between
This switch also serves as a jam reset switch.
7-22
The torsion springs are