Tray Raising and Lowering

When the loaded tray is pushed into the machine:

• The tray lift motor [A] switches on and rotates a coupling [B] interlocked with a pin on the shaft of the arm [C] against the bottom of the tray [D] under the stack.
• The rotated shaft raises the arm and bottom plate.
• The tray motor coupling remains meshed and locked with the lift arm (to keep the stack raised), but disengages from the arm and automatically lowers the bottom plate and stack when the tray is opened.
• The amount of rotation to bring the stack to the optimum feed position is measured by a small metal plate [E] in contact with a gear [F] inside the motor mount (the amount of rotation tells the machine how much paper remains in the tray).