RICOH VT2500
Service Manual

28 February �91

5.2 PAPER FEED ROLLER/UPPER SEPARATION ROLLER MECHANISM

[C]

[L] [H]

[G] [B] [M] [K] [E] [A] [I] [D] The sector gear [A], located on the non-operation side, rotates the paper feed roller [B] and the upper separation roller [C]. When the paper feed solenoid [D] turns on, the link [E] is pulled and the sector stopper [F] turns counterclockwise. This is because the sector gear lock is released when the cam roller [G] is positioned on the top of the paper feed roller cam [H]. Then, the cam roller [G] of the sector gear moves along the cam face of the paper feed roller cam [H]. When moving the cam roller [G] from the bottom to the top of the paper feed roller cam [H], the sector gear [A] turns clockwise and the gear [I] is turned counterclockwise. The rotation of the gear [I] is transmitted to the upper separation roller shaft [J] by the one-way clutch inside the gear [I], and the upper separation roller [C] turns counterclockwise. At the same time, the pulley [K] mounted on the upper separation roller shaft [L] turns, and the belt [M] rotates the paper feed roller [B] counterclockwise to feed the printing paper. When the cam roller [G] moves from the top to the bottom of the paper feed roller cam [H], the sector gear [A] turns counterclockwise and the gear [I] is turned clockwise. However, due to the one-way clutch inside the gear [I], the upper separation roller [C] and the paper feed roller [B] do not turn.
2-90

[F]