A conveyance apparatus includes a separation unit configured to separate and convey a sheet, a detection unit configured to detect a floating of the sheet passing through the separation unit, and a control unit configured to stop separate conveyance by the separation unit if the detection unit detects the sheet for not less than a predetermined time and/or a predetermined count.

A sheet feeding apparatus includes a first feeder, a second feeder, and processing circuitry. The first feeder includes a sheet stacker, an air blower, a suction feeder, and a remaining amount detection sensor. The air blower blows air to float an uppermost sheet. The suction feeder sucks and feeds the sheet. The remaining amount detection sensor detects a remaining amount of sheets stacked. The processing circuitry determines whether the remaining amount of sheets in the first feeder is smaller than a threshold, causes the first feeder to perform a feeding operation of feeding the sheet floated by the air blower to the suction feeder in response to a determination that the remaining amount is equal to or greater than the threshold, and causes the second feeder to feed a sheet instead of the first feeder in response to a determination that the remaining amount is smaller than the threshold.

A sheet feeding apparatus includes a first feeder, a second feeder, and processing circuitry. The first feeder includes a sheet stacker, an air blower, a suction feeder, and a remaining amount detection sensor. The air blower blows air to float an uppermost sheet. The suction feeder sucks and feeds the sheet. The remaining amount detection sensor detects a remaining amount of sheets stacked. The processing circuitry determines whether the remaining amount of sheets in the first feeder is smaller than a threshold, causes the first feeder to perform a feeding operation of feeding the sheet floated by the air blower to the suction feeder in response to a determination that the remaining amount is equal to or greater than the threshold, and causes the second feeder to feed a sheet instead of the first feeder in response to a determination that the remaining amount is smaller than the threshold.

A conveyance apparatus includes a separation unit configured to separate and convey a sheet, a detection unit configured to detect a height-direction deformation of the sheet passing through the separation unit on a downstream side than a sheet-conveying position of the separation unit in a conveyance direction of the sheet, and a control unit configured to stop the sheet conveyed by the separation unit if the detection unit detects the deformation of the sheet.

A conveyance apparatus includes a separation unit configured to separate and convey a sheet, a detection unit configured to detect a height-direction deformation of the sheet passing through the separation unit on a downstream side than a sheet-conveying position of the separation unit in a conveyance direction of the sheet, and a control unit configured to stop the sheet conveyed by the separation unit if the detection unit detects the deformation of the sheet.

Provided is a control unit of a conveying apparatus, the conveying apparatus including: a conveying unit that conveys recording paper along a conveying path; and an imaging unit that images the recording paper and an object not conveyed by the conveying unit, wherein the control unit acquires actual conveyance information of the recording paper from image information of the recording paper imaged by the imaging unit and image information of the object imaged by the imaging unit.

Provided is a control unit of a conveying apparatus, the conveying apparatus including: a conveying unit that conveys recording paper along a conveying path; and an imaging unit that images the recording paper and an object not conveyed by the conveying unit, wherein the control unit acquires actual conveyance information of the recording paper from image information of the recording paper imaged by the imaging unit and image information of the object imaged by the imaging unit.

A sheet processing system according to an embodiment includes a tray that supports a sheet on opposite sides of the sheet orthogonal to a conveyance direction of the sheet. The tray includes a first adjustable support and second adjustable support positioned opposite the first adjustable support in the direction orthogonal to the conveyance direction of the sheet. A skew sensor detects a skew angle of the sheet conveyed to the tray. A corner sensor detects positions of each corner on a front end in the downstream direction of the sheet conveyed to the tray. A controller controls movement of the first and second adjustable supports based on the detected skew angle and the detected positions of each corner on the front end of the sheet conveyed to the tray so that the sheet is conveyed to the tray without jamming.

A sheet processing system according to an embodiment includes a tray that supports a sheet on opposite sides of the sheet orthogonal to a conveyance direction of the sheet. The tray includes a first adjustable support and second adjustable support positioned opposite the first adjustable support in the direction orthogonal to the conveyance direction of the sheet. A skew sensor detects a skew angle of the sheet conveyed to the tray. A corner sensor detects positions of each corner on a front end in the downstream direction of the sheet conveyed to the tray. A controller controls movement of the first and second adjustable supports based on the detected skew angle and the detected positions of each corner on the front end of the sheet conveyed to the tray so that the sheet is conveyed to the tray without jamming.

A device and method for the processing of printed products with one or more transport systems for transporting the printed products between processing stations comprises a transport path lighting system that is divided into segments, wherein the type of illumination of such a segment is with respect to its color, intensity and/or variation in time defined by certain properties of the product located in this section or its production history.