Paper Tray Feed; Paper Lift Mechanism - Ricoh A219 Service Manual

10.2 PAPER TRAY FEED

10.2.1 Paper Lift Mechanism

[B]
[A]
[C]
[E]
The capacity of this tray is higher than usual for a corner separator type.
Because of this, there are two springs to lift the bottom plate.
As the tray is pushed into the machine, shutter [A] under the tray pushes
against projection [B]. As the shutter slides past the projection, the shutter
rotates, which forces the main lift spring [C] to pull the bottom plate lever [D].
The secondary lift spring [E] also pulls the bottom plate lever (this is
described below).
The tension applied to the main lift spring is always the same. However, the
secondary spring is only used when wider paper is installed, to lift the extra
weight of the paper stack. The tension applied to the secondary lift spring
depends on the paper width. Below a certain threshold width, tension is not
applied. Above this width, the wider the paper, the more tension is applied.
To apply spring tension for wider paper, projection [F] stops against the end
of rail [G]. When this happens, lever [H] swings out in the direction shown
above, which stretches the spring as the tray is pushed in. The side fence
position affects the orientation of [F]; wider paper causes [F] to contact [G]
earlier, leading to greater spring tension when the tray has been pushed all
the way in.
For narrow paper, the secondary lift spring is not needed. The side fence
orients projection [F] so that it slides past the rail as the tray is pushed into
the machine, and the spring stays slack.
The bottom plate stopper [I] rests on the bottom plate [J]. It stops the bottom
plate at the maximum height. When the tray is getting empty, the corner
separators [K] start to rise, and continue to rise as the amount of paper in the
tray decreases, so that the paper is always at the correct height.
SM
CÓPIA NÃO CONTROLADA
[H]
[G]
[D]
[F]
A219D534.wmf
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CÓPIA NÃO CONTROLADA
PAPER FEED AND REGISTRATION
[J]
[I]
A219D535.wmf
[K]
A219