To provide a post-processor capable of executing alignment processing with high accuracy.

Configuring a post-processor including: a recording material loader on which a recording material conveyed through a conveyance path is loaded; an aligner that aligns the recording material in the recording material loader; a driver that moves the aligner; and a controller that receives information of a physical property value of the recording material acquired by a medium sensor and determines an operation parameter of alignment processing that drives the driver based on the information of the physical property value.

To provide a post-processor capable of executing alignment processing with high accuracy.

Configuring a post-processor including: a recording material loader on which a recording material conveyed through a conveyance path is loaded; an aligner that aligns the recording material in the recording material loader; a driver that moves the aligner; and a controller that receives information of a physical property value of the recording material acquired by a medium sensor and determines an operation parameter of alignment processing that drives the driver based on the information of the physical property value.

The sheet discharge apparatus sets a discharge speed at which a sheet is discharged by a discharge device to a first discharge speed when a bundle of sheets includes a first number of sheets and sets the discharge speed to a second discharge speed that is lower than the first discharge speed when the bundle of sheets includes a second number of sheets that is greater than the first number of sheets.

The sheet discharge apparatus sets a discharge speed at which a sheet is discharged by a discharge device to a first discharge speed when a bundle of sheets includes a first number of sheets and sets the discharge speed to a second discharge speed that is lower than the first discharge speed when the bundle of sheets includes a second number of sheets that is greater than the first number of sheets.

A sheet processing apparatus comprising: a conveying unit configured to have a roller that conveys a sheet in a conveyance direction; a first detecting device disposed downstream of the conveying unit in the conveyance direction; a second detecting device disposed downstream of the first detecting device in the conveyance direction; a boring unit configured to have a punch that performs boring in the sheet; and a control unit is used. The first detecting device and the second detecting device each detect passage of a leading edge of the sheet being conveyed. The control unit calculates an actual conveyance speed of the sheet on the basis of detection results of the first detecting device and the second detecting device, and controls rotation of the roller, on the basis of the actual conveyance speed, so that the sheet is conveyed at a predetermined target speed.

A conveyance device includes a conveyance roller, a registration roller, a sensor, a mode setting part, a storage, a conveyance state determination part and a drive control part. The mode setting part sets the mode to either a plain paper mode or a tab paper mode. The storage stores threshold information corresponding to the mode. The conveyance state determination part determines, when the plain paper mode is set, whether the conveyance state of the recording medium is a skew conveyance state or a tab paper conveyance state, based on the detection result of the sensor and the plain paper mode threshold information. The conveyance state determination part determines, when the tab paper mode is set, whether the conveyance state of the recording medium is the skew conveyance state or the tab paper conveyance state, based on the detection result of the sensor and the tab paper mode threshold information.

A sheet conveyance apparatus includes a drive source, a conveyance portion, a transmission mechanism configured to switch between a first state and a second state, a load detection portion configured to detect a load acting on the drive source, and a control portion configured to control the drive source and the transmission mechanism. The control portion is configured to change, on a basis of a detection result of the load detection portion, a timing in the conveyance operation at which a control signal for switching the transmission mechanism from the first state to the second state is issued, the timing being changed in accordance with a delay time from when the control signal is issued to when change in the load corresponding to the switching of the transmission mechanism from the first state to the second state appears.

A web processing system is provided. The web processing system supplies a processed continuous web of material to a cutting arrangement. The cutting arrangement forms sheets from the continuous web of material. The sheets are then supplied to multiple folding arrangements such that a single web of material is used to supply sheets to multiple folding arrangements.

A post-processing device includes an intermediate tray on which a medium transported in a transport direction is placed, a discharge port through which the medium post-processed on the intermediate tray is discharged, a discharge tray which is disposed in a gravity direction with respect to the discharge port and on which the medium discharged from the discharge port is placed, and an elevating mechanism which elevates the discharge tray, in which the elevating mechanism can move the discharge tray to a first normal position and a first standby position positioned in a direction opposite to the gravity direction with respect to the first normal position, and moves the discharge tray to the first normal position or the first standby position according to an amount of ink before the medium comes in contact with the discharge tray or the medium previously placed on the discharge tray.

A post-processing device includes an intermediate tray on which a medium transported in a transport direction is placed, a discharge port through which the medium post-processed on the intermediate tray is discharged, a discharge tray which is disposed in a gravity direction with respect to the discharge port and on which the medium discharged from the discharge port is placed, and an elevating mechanism which elevates the discharge tray, in which the elevating mechanism can move the discharge tray to a first normal position and a first standby position positioned in a direction opposite to the gravity direction with respect to the first normal position, and moves the discharge tray to the first normal position or the first standby position according to an amount of ink before the medium comes in contact with the discharge tray or the medium previously placed on the discharge tray.