Feeding apparatus

A feeding apparatus arranged on a conveying path (93) through which sheet-like mediums (90) are transmitted, comprising:

• a pickup roller (20) that is arranged to contact with the medium (90) and rotatable to transmit the medium downstream along the conveying path;
• a separating roller (30) that is arranged downstream to the pickup roller in the conveying path for receiving the medium transmitted by the pickup roller, the separating roller being rotatable to further advance the medium downstream along the conveying path;
• a pressing structure (50) including a pressing part that is arranged opposite to the pickup roller;
• a brake roller (40) pivoted to the pressing structure and arranged opposite to the separating roller, a first torque limiter (51) being connected with the brake roller and the pressing structure to drive the pressing part to swing toward or away from the pickup roller according to the rotating direction of the brake roller, a reversing motor (43) being connected with the brake roller via a third torque limiter (44), the third torque limiter providing an upstream braking force for the brake roller via the drive of the reversing motor,
• wherein when only one medium is transmitted between the separating roller and the brake roller, the brake roller rotates along with the separating roller downstream and drives the pressing structure to swing the pressing part toward the pickup roller by virtue of the first torque limiter so as to apply the normal force onto the mediums for the convenience of the pickup roller picking the medium, when more than one medium are transmitted between the separating roller and the brake roller, the brake roller is driven by the third torque limiter via the reversing motor to rotate upstream because friction forces among the mediums are smaller than the braking force of the brake roller so as to transmit the mediums which are not contacted with the separating roller back upstream along the conveying path, the brake roller further drives the pressing structure to swing the pressing part away from the pickup roller by virtue of the first torque limiter so as to release the normal force between the pickup roller and the medium and avoid more mediums being further transmitted downstream.