Sheet transport device

A sheet transport device for transporting a sheet along a transport path, comprising:

• a projecting tab projecting inwardly in the transport path with such a configuration as to guide the sheet in a specified transport direction, the projecting tab including a contact portion to be in contact with the sheet to form a wavy surface on the sheet in a width direction substantially orthogonal to the specified transport direction, the contact portion of the projecting tab being formed in a continuous curve.

A sheet transport device for transporting a sheet along a transport path, comprising:

• a projecting tab projecting inwardly in the transport path with such a configuration as to guide the sheet in a specified transport direction, the projecting tab including a contact portion to be in contact with the sheet to form a wavy surface on the sheet in a width direction substantially orthogonal to the specified transport direction, the projecting tab being made of an elastic material.

A sheet transport device for transporting a sheet along a transport path, comprising:

• a projecting tab projecting inwardly in the transport path with such a configuration as to guide the sheet in a specified transport direction, the projecting tab including a contact portion to be in contact with the sheet to form a wavy surface on the sheet in a width direction substantially orthogonal to the specified transport direction, the projecting tab being provided in a junction at which the transport path is connected to a plurality of transport paths so as to guide the sheet transported in the junction to either one of the transport paths.

A sheet transport device for transporting a sheet along a transport path, comprising:

• a projecting tab projecting inwardly in the transport path with such a configuration as to guide the sheet in a specified transport direction, the projecting tab including a contact portion to be in contact with the sheet to form a wavy surface on the sheet in a width direction substantially orthogonal to the specified transport direction, the projecting tab being provided on the transport path where the sheets are transported in an overlap state in opposite directions to each other.

A sheet transport device for transporting a sheet along a transport path, comprising:

• a projecting tab projecting inwardly in the transport path with such a configuration as to guide the sheet in a specified transport direction, the projecting tab including a contact portion to be in contact with the sheet to form a wavy surface on the sheet in a width direction substantially orthogonal to the specified transport direction, the projecting tab being provided on a curved portion of the transport path.

A sheet transport device for transporting a sheet along a transport path, comprising:

• a projecting tab projecting inwardly in the transport path with such a configuration as to guide the sheet in a specified transport direction, the projecting tab including a contact portion to be in contact with the sheet to form a wavy surface on the sheet in a width direction substantially orthogonal to the specified transport direction, said transport path having a portion with a radius of curvature changing along the specified transport direction, the projecting tab being provided at a position in said portion of the transport path.

A sheet transport device for transporting a sheet along a transport path, comprising:

• a projecting tab projecting inwardly in the transport path with such a configuration as to guide the sheet in a specified transport direction, the projecting tab including a contact portion to be in contact with the sheet to form a wavy surface on the sheet in a width direction substantially orthogonal to the specified transport direction, the projecting tab being provided on the transport path for transporting the sheet substantially upward.

A sheet transport device provided with a switchback route for temporarily allowing a sheet to enter therein to for a switchback operation, the switchback route being formed with an opening opened toward an exterior of the sheet transport device, wherein

• a stepped portion is provided near the opening, the stepped portion being formed with an upper step and a lower step which is formed adjacent to said upper step and on the side of said opening, said upper step constituting a lower wall of the switchback route and said lower step being of a lower level than said upper step.