Ricoh PB3300 Manuale di servizio sul campo - Pagina 12

Sfoglia online o scarica il pdf Manuale di servizio sul campo per Accessori per stampanti Ricoh PB3300. Ricoh PB3300 31. Paper feed unit

1.Detailed Descriptions

Mechanism

Paper feed is an RF paper feed system. The paper feed unit comprises a Pick-up roller, Feed roller and

Friction roller. These rollers are high durability.

In the RF system, paper separation is assisted by the resistance of a separating roller with a torque

limiter (reverse drive is not performed).

Pick-up roller and Feed roller are driven by the paper feed motor (M2) [A]. Transport roller is driven by

the transport motor (M1) [B]. Friction roller is not driven.

When the paper feed tray is set, the Friction roller comes in contact with the Feed roller, and the Pick-

up roller contacts the uppermost transfer sheet.

However, when the paper feed tray is pulled out, to prevent paper dropout, the contact between the

Feed roller and Friction roller, and between pick-up roller and paper is released.

In this MFP, to maintain a fixed clearance between sheets, a paper feed sensor (S1) is provided

between the Pickup roller and the Feed roller, which adjusts the paper feed timing.