A machine learning device learns an action of a driving source in a transport device continuously transporting at least two transported objects along a transport path, and includes: a hardware processor that: acquires position information of the at least two transported objects on the transport path on the basis of a result of detection by a sensor provided in the transport path; calculates a reward on the basis of the position information acquired, according to a predetermined rule; learns an action by calculating an action value in reinforcement learning on the basis of the position information acquired and the reward calculated; and generates and outputs control information that causes the driving source to perform an action determined on the basis of a learning result.

A feeding device comprises a suction feeding unit having a belt for feeding a sheet in a suction state and a belt driving unit, a sheet detection sensor, and a control unit. The control unit controls the belt drive unit so as to feed the sheet in a feeding direction at a first speed. If the sheet does not arrive at the sheet detection sensor, the control unit controls the belt drive unit so as to execute a low-speed feeding ox moving the belt in the feeding direction at a second speed lower than the first speed or so as to execute a reverse feeding of moving the belt in a reverse feeding direction opposite to the feeding direction.

In an image forming apparatus, a first motor causes a first rotor to rotate. The first motor rotates based on a first drive signal. A second motor causes a second rotor to rotate. The second motor rotates based on a second drive signal. A reading unit is provided between the first rotor and the second rotor. Based on a read signal, the reading unit reads a paper sheet being conveyed line by line. In a first period, a read signal generation unit generates the read signal in accordance with a frequency of the first drive signal. In a second period, the read signal generation unit generates, as the read signal, a signal for reading the paper sheet being conveyed at a reference speed.

A document conveying device includes an inversion path, a lift member, a drive source, a conveying part, a detection part and a control part. The lift member forms an upper side face of the inversion path. The drive source moves the lift member upward and downward in the inversion path. The conveying part is pushed up by the uppermost document, and rotates to feed the uppermost document. The detection part detects a height of the conveying part. The control part executes an overload feeding mode in which whether the document is overloaded is determined based on a detection result of the detection part, when an overload is determined, the lift member is moved downward until the overload is not determined, the drive source moves the lift member upward until the conveying part is pushed up to an optimum feeding height, and then the uppermost document is fed.

An image forming apparatus includes a feed tray having a placement surface on which a sheet is placed. The feed tray includes a fixed table, an extension table, and a sensor. The extension table is capable of being pulled out along and being accommodated in the fixed table. The sensor is disposed on the fixed table and detects whether or not the sheet is placed on the extension table in a situation in which the extension table is pulled out.

An image reading portion includes a light emitting portion and a plurality of photoelectric conversion elements. The light emitting portion emits detection light to a target area extending over a surface of a conveying belt and a pair of off-belt areas outside the conveying belt in a width direction. The image reading portion outputs a plurality of pixel data items. A reference member forms a pair of boundary lines by the difference in reflectance of the detection light at a pair of reference positions in the pair of off-belt areas. A calibration portion identifies data items corresponding to the pair of boundary lines in the plurality of pixel data items obtained by the image reading portion so as to correct reference position data representing a correspondence relationship between the plurality of pixel data items and positions in the width direction.

An operation unit is provided on a front side of the image forming apparatus. A document feeding portion feeds a document supported by a document supporting portion in a document feeding direction from a front side of the image forming apparatus toward the rear side of the image forming apparatus. A document discharge portion discharges the document in a document discharge direction from the rear side toward the front side. The operation unit is disposed on one side with respect to an apparatus center of the image forming apparatus in a left-right direction orthogonal to a direction from the front side to the rear side. A conveyance center of the document feeding portion in the left-right direction is disposed on the other side with respect to the apparatus center in the left-right direction.

A sheet conveying system includes: an upstream apparatus provided on an upstream side in a conveyance direction of a paper sheet; a downstream apparatus provided on a downstream side of the upstream apparatus; an upstream conveyor that conveys the paper sheet; an upstream driver that drives the upstream conveyor; a downstream conveyor that receives the paper sheet conveyed from the upstream conveyor, and conveys the paper sheet received from the upstream conveyor; a downstream driver that drives the downstream conveyor; an upstream controller that is connected to the upstream and downstream drivers; and a downstream controller that is connected to the downstream and upstream drivers, wherein the sheet conveying system switches control on the basis of sheet information between first control in which the upstream controller controls the upstream and downstream drivers and second control in which the downstream controller controls the downstream and upstream drivers.

A sheet conveying system includes: an upstream apparatus provided on an upstream side in a conveyance direction of a paper sheet; a downstream apparatus provided on a downstream side of the upstream apparatus; an upstream conveyor that conveys the paper sheet; an upstream driver that drives the upstream conveyor; a downstream conveyor that receives the paper sheet conveyed from the upstream conveyor, and conveys the paper sheet received from the upstream conveyor; a downstream driver that drives the downstream conveyor; an upstream controller that is connected to the upstream and downstream drivers; and a downstream controller that is connected to the downstream and upstream drivers, wherein the sheet conveying system switches control on the basis of sheet information between first control in which the upstream controller controls the upstream and downstream drivers and second control in which the downstream controller controls the downstream and upstream drivers.

An image reading apparatus includes a first scanner provided in a housing, a conveyance unit, and a first calibration member. The conveyance unit is provided with a separation unit which separates the first calibration member upward from the first scanner. When the first calibration member is separated, the separation unit releases connection between the conveyance unit and the housing.