The present invention provides a printer for applying a stamp onto an official document, wherein the printer comprises an access level with an inlet for inserting the document into and removing the document from the printer, a processing level including a print head, and an inter-level document transport system for moving a document receiving platen between the access level and the processing level. The access level and the processing level are at least partly arranged on top of each other. The present invention also provides an imaging system for a printer and a method for processing an official document with a printer.

A scanner includes a reading unit that reads an image of a paper, a medium feeding portion that is capable of selecting a first feeding mode in which a separation feeding for separately feeding a paper bundle in which a plurality of sheets of paper is overlapped with each other is performed and a second feeding mode in which a non-separation feeding for collectively feeding the paper bundle without separating is performed, and a pair of first transporting rollers and a pair of second transporting rollers that transport the paper fed by the medium feeding portion, in a case in which the medium feeding portion feeds the paper in the second feeding mode, a first driven roller and a second driven roller respectively constituting the pair of first transporting rollers and the pair of second transporting rollers are driven in a rotation direction where the paper is transported.

A scanner includes a reading unit that reads an image of a paper, a medium feeding portion that is capable of selecting a first feeding mode in which a separation feeding for separately feeding a paper bundle in which a plurality of sheets of paper is overlapped with each other is performed and a second feeding mode in which a non-separation feeding for collectively feeding the paper bundle without separating is performed, and a pair of first transporting rollers and a pair of second transporting rollers that transport the paper fed by the medium feeding portion, in a case in which the medium feeding portion feeds the paper in the second feeding mode, a first driven roller and a second driven roller respectively constituting the pair of first transporting rollers and the pair of second transporting rollers are driven in a rotation direction where the paper is transported.

A medium transport apparatus includes a main body that is switchable between a first posture and a second posture and a rotatable route-forming member that forms an exterior of a turning route. The route-forming member couples a first transport route to a second transport route when the main body has the first posture and couples the first transport route to a third transport route when the main body has the second posture. The medium transport apparatus further includes a transport route switching section having a switching member that engages with both the body support and the route-forming member. In response to switching between the first posture and the second posture of the main body, engagement of the switching member with the main-body support changes to rotate the route-forming member and to switch the medium transport route to which the first transport route is coupled.

A document conveying device includes a cover, a rigid stopper, and a biasing member. The cover includes a first cover plate and a second cover plate. The stopper is rigid, has a fixed end rotatably connected to the cover and a movable end moving in an elongated hole formed in the device main body accordance with a turning of the cover, and supports the cover in a fully opened posture when the movable end is locked to one end of the elongated hole. The biasing member moves the movable end of the stopper to a position P separated by a predetermined distance from the one end of the elongated hole.

A scanner includes a reading unit that reads an image of a paper, a medium feeding portion that is capable of selecting a first feeding mode in which a separation feeding for separately feeding a paper bundle in which a plurality of sheets of paper is overlapped with each other is performed and a second feeding mode in which a non-separation feeding for collectively feeding the paper bundle without separating is performed, and a pair of first transporting rollers and a pair of second transporting rollers that transport the paper fed by the medium feeding portion, in a case in which the medium feeding portion feeds the paper in the second feeding mode, a first driven roller and a second driven roller respectively constituting the pair of first transporting rollers and the pair of second transporting rollers are driven in a rotation direction where the paper is transported.