An image forming apparatus includes a staple unit, a print unit, a power supply, and a control unit. When the time that elapses after completion of a print job equals a standby time, the control unit stops supply of electric power to the staple unit. When it is predicted that the printout of a print job does not require stapling, the control unit sets the standby time to a first time. When it is predicted that stapling is required, the control unit sets the standby time to a second time that is longer than the first time.

An image forming apparatus includes a feeder including a tray and a pickup member, a size determiner, a sheet type setter, and a controller. The tray stacks a sheet thereon, and the pickup member feeds a contacted sheet. The feeder switches between a first state where the pickup member and the stacked sheet are in contact and a second state where the pickup member and the stacked sheet are separate. The size determiner determines a stacked sheet size. The sheet type setter sets a stacked sheet type. Where the type of the set sheet is a first type, the feeder switches from the second state to the first state when the size of the sheet is determined. Where the type of the set sheet is a second type, the feeder refrains from switching from the second state to the first state even when the size of the sheet is determined.

An image forming apparatus includes a staple unit, a print unit, a power supply, and a control unit. When the time that elapses after completion of a print job equals a standby time, the control unit stops supply of electric power to the staple unit. When it is predicted that the printout of a print job does not require stapling, the control unit sets the standby time to a first time. When it is predicted that stapling is required, the control unit sets the standby time to a second time that is longer than the first time.

A sheet feeding device includes a side face of a device body and a bypass tray. The bypass tray is supported turnably around a fulcrum part in the side face between a close position along the side face and an open position held at a predetermined angle with the side face. The bypass tray includes a locked piece having a locked hole. The side face includes a locking hook engaging with the locked piece when the bypass tray is at the close position. The locking hook includes an elastically deformable arm part, an engaging protrusion part protruded inwardly from a distal end of the arm part in a width direction of a sheet to insert into the locked hole, and a regulating part coming into contact with an opening edge of the locked hole to regulate an insertion amount of the engaging protrusion part to the locked hole.

A feeding device includes a detection unit, a control unit, a first plate on which a recording material is placed, a second plate located above the first plate in vertical direction, and an uplift unit to uplift a recording material placed on the first plate. The detection unit changes a detection result when an uplifted recording material arrives at a feeding position. The recording material placed on the first plate is uplifted by the uplift unit until the detection result is changed. The detection result is changed when a recording material fed from the second plate passes the detection unit while the recording material placed on the first plate is not in the feeding position. The control unit causes recording material to be sequentially fed from the second plate, and causes the uplift unit to uplift the recording material placed on the first plate in an interval time.

An image forming apparatus includes a carrying part that carries media, a supply part that forwards the media to the carrying part piece by piece, wherein when a preceding medium is detected to have been fed to the carrying part, a succeeding medium is next fed to the carrying part, and a carrying controller that stops the preceding medium at a stop position of the media before the preceding medium is carried to the image forming process. The carrying controller obtains a medium length of the preceding medium in the carrying path, and changes the stop position of the preceding medium based on the medium length such that the trailing edge of the preceding medium is maintained distant from the leading edge of the succeeding medium while the preceding medium stops at the stop position.

An image forming apparatus, including: a decision unit configured to decide a size of a recording material on a manual feed tray; a storage unit configured to store the size of the recording material decided by the decision unit when the image forming apparatus is shifted from a first mode in which power is supplied to the decision unit to a second mode in which the power is not supplied to the decision unit; a display unit configured to display information; and a control unit configured to cause the display unit to display a screen for confirming the size of the recording material on the manual feed tray in a case where the size of the recording material decided by the decision unit when the apparatus is shifted from the second mode to the first mode does not match the size of the recording material stored in the storage unit.

A sheet transport apparatus includes a first casing in which a transport path is formed; a transport unit which transports a sheet along the transport path; a second casing which is provided to be movable with respect to the first casing; a sheet support unit which is rotatably provided in the first casing at a position on a side to which the second casing is moved, the sheet support unit being changeable between a first state, a second state, and a third state and supporting the sheet at least in the third state; and an urging unit which urges the sheet support unit toward the first state within a range from the first state to the second state and which urges the sheet support unit toward the third state within a range from the second state to the third state.

A paper feeding unit of an image forming apparatus according to an exemplary embodiment is provided with a base portion, a guide, a protruding portion, and a roller. The base portion is capable of having the sheet placed thereon. The guide erects with respect to the base portion. The guide regulates a position of the sheet in a width direction which intersects with a transporting direction of the sheet. The protruding portion is provided on the guide. The protruding portion faces an end portion of the sheet in the width direction from a side opposite to the base portion. The roller is provided on the protruding portion. The roller is provided with a circumferential surface facing the end portion of the sheet. The roller is rotatable in the transporting direction of the medium.

An image processing apparatus comprises a container mounted on a side wall of the image processing apparatus and comprising a bottom extending upwards in the vertical direction at a predetermined angle from the side wall for supporting an end of a sheet and a wall member vertically arranged on the bottom and forming a space with the bottom, and configured to house a sheet in the space through an opening formed on the upper side of the container; and a pickup unit located adjacent to the bottom of the container and having a pickup roller and configured to move the pickup roller to the inside of the container if a pickup operation for conveying the sheet to the inside of the image processing apparatus is executed, and keep the pickup roller at a waiting position outside of the space of the container if the pickup operation is not executed.