Main Machine Relay Roller and LCT Relay Roller
When a sheet of paper is fed from one of the main machine paper trays, or when a sheet is fed on its second pass for printing on the second side during duplex printing, the registration timing sensor [A] detects the leading edge of the sheet. This signals the main relay separation motor [B] to turn on and open the nip between the relay drive and idle rollers. When a sheet of paper is fed from the LCT (option) on the right side of the machine, the registration timing sensor [A] detects the leading edge of the sheet and signals the LCT relay motor [D] to open the nip of the LCT relay rollers. In both cases the paper is released in front of the registration timing roller [C] so it is free to move for image registration in the main scan direction.
Registration Gate Roller and Registration Timing Roller
The rotation and release of the registration gate roller, rotation of the registration timing roller, and release of the registration timing drive roller, are all controlled by the rotary gate motor [E].
The raising and lowering of the registration gate roller [A] is driven by a cam [B] attached to the shaft drive roller [C].
The raising and lowering of the registration timing roller [D] is controlled by three gears driven by the rotary gate motor [E] that rotate cam [F]. The lever [G] attached to the cam raises drive roller [H] to separate it