According to some embodiments, a double detection apparatus for a mail-piece inserter includes a detectable flag affixed to a rotating mail-piece gripper of a mail-piece rotary feeder. A stationary proximity sensor may generate a voltage output based on a presence of the detectable flag in a direction along a first axis normal to the rotation of the mail-piece gripper. A decision unit may then generate a double detect alert signal when a phase shift above a pre-determined threshold value is detected in the voltage output generated by the stationary proximity sensor. According to some embodiments, the decision unit may also generate a thin detect alert signal when a phase shift past another pre-determined threshold value is detected in the voltage output generated by the stationary proximity sensor.

A medium feeding device includes an imaging unit which images a medium tip end portion from a position of facing a face of the medium on a downstream side of a nipping position of the medium using a feeding unit and a separating unit; and a determining unit which determines whether or not there is transport disorder by evaluating a state of a boundary between a path member which forms a medium transport path and a medium tip end from image data obtained by the imaging unit, in which the determining unit sets a rectangular determining region including at least a part of the boundary with respect to the image data, and determines whether or not there is transport disorder based on a length of a boundary in the determining region.

A feeding apparatus includes a feeding member, first and second conveying members, a separation member, and drive and control units. The feeding member feeds a recording material placed on a tray. The separation member and the first conveying member form a nip portion and separates recording materials at the nip portion. The second conveying member conveys a conveyed recording material. The drive unit drives at least the feeding member. The control unit controls to feed first and second recording materials such that a second recording material front edge passes the nip portion before a first recording material rear edge passes the nip portion, and controls to stop the second recording material after the second recording material front edge has passed the nip portion such that the first recording material rear edge reaches the second conveying member before the second recording material front edge reaches the second conveying member.

A feeding apparatus includes a feeding member, first and second conveying members, a separation member, and drive and control units. The feeding member feeds a recording material placed on a tray. The separation member and the first conveying member form a nip portion and separates recording materials at the nip portion. The second conveying member conveys a conveyed recording material. The drive unit drives at least the feeding member. The control unit controls to feed first and second recording materials such that a second recording material front edge passes the nip portion before a first recording material rear edge passes the nip portion, and controls to stop the second recording material after the second recording material front edge has passed the nip portion such that the first recording material rear edge reaches the second conveying member before the second recording material front edge reaches the second conveying member.

A sheet transport device includes a sheet transport path along which at least one sheet is transported to a nip defined by a fixing roller and a displacement roller, a sensing unit disposed on the sheet transport path, an opening and closing member that is movable between a closed position at which the sheet transport path is formed and an open position at which the sheet transport path is exposed, and a guide member that is attached to the opening and closing member and that moves by following displacement of the displacement roller in such a manner as to maintain a certain distance from the sensing unit.

A paper feeding parameter management system includes air paper feeding devices and a management device. The air paper feeding device includes an air paper feeder that feeds a paper sheet by sending air to and attracting the paper sheet, and switches paper feeding parameters in the air paper feeder. The management device (i) causes a memory to hold an adjustment result in which paper type information, the paper feeding parameter, and conveyance result transmitted from each of the air paper feeding devices are associated, and (ii) refers to the adjustment result to set, for an air paper feeding device targeted for processing, a paper feeding parameter corresponding to the paper type information obtained by the air paper feeding device targeted for processing on a basis of the conveyance result corresponding to the paper feeding parameter.

A paper feeding parameter management system includes air paper feeding devices and a management device. The air paper feeding device includes an air paper feeder that feeds a paper sheet by sending air to and attracting the paper sheet, and switches paper feeding parameters in the air paper feeder. The management device (i) causes a memory to hold an adjustment result in which paper type information, the paper feeding parameter, and conveyance result transmitted from each of the air paper feeding devices are associated, and (ii) refers to the adjustment result to set, for an air paper feeding device targeted for processing, a paper feeding parameter corresponding to the paper type information obtained by the air paper feeding device targeted for processing on a basis of the conveyance result corresponding to the paper feeding parameter.

A detection system for detecting double sheets being supplied to a lateral positioning device (100) for a sheet element (20, 20) in a sheet element processing machine. The machine has a drive system including a cam disk (174) and a cam follower lever (172). The detection system includes a detector lever (130) mounted so as to be displaceable between a sheet receiving position and a detection position. The detector lever (130) has a sheet sensing end (132) for engagement with an upper face of the sheet element (20, 20) when being in the detection position, and a position detector end (133) for cooperating, when being in the detection position, with a position detector (140) adapted for generating a signal dependent on the thickness of the sheet element (20, 20), and further includes a raising lever (170) for raising the sheet sensing end (132) of the detector lever (130). The raising lever (170) is mounted on the cam follower lever (172) of the sheet element processing machine. Further disclosed is a sheet element processing machine including a detection system as outlined above, mounted in an introduction station (10) upstream of a processing station.

A detection system for detecting double sheets being supplied to a lateral positioning device (100) for a sheet element (20, 20) in a sheet element processing machine. The machine has a drive system including a cam disk (174) and a cam follower lever (172). The detection system includes a detector lever (130) mounted so as to be displaceable between a sheet receiving position and a detection position. The detector lever (130) has a sheet sensing end (132) for engagement with an upper face of the sheet element (20, 20) when being in the detection position, and a position detector end (133) for cooperating, when being in the detection position, with a position detector (140) adapted for generating a signal dependent on the thickness of the sheet element (20, 20), and further includes a raising lever (170) for raising the sheet sensing end (132) of the detector lever (130). The raising lever (170) is mounted on the cam follower lever (172) of the sheet element processing machine. Further disclosed is a sheet element processing machine including a detection system as outlined above, mounted in an introduction station (10) upstream of a processing station.

An example system includes a main body and a module. The main body includes a first guide portion, and the module includes a second guide portion. The module is removably attachable to the main body. The first guide portion and the second guide portion form complimentary parts of a media guide when the module is attached to the main body.