An image forming apparatus includes an apparatus body including a side surface portion in which an opening is formed, a cartridge, an opening/closing member configured to be moved with respect to the apparatus body between a closed position and an opened position, a sheet stacking portion, a feed roller, and a lifting member configured to lift and lower the feed roller. In the state where the opening/closing member is positioned in the closed position, at least part of the lifting member is positioned an inside of a movement locus through which the cartridge passes in a case where the cartridge is attached to and detached from the apparatus body. In a state where the opening/closing member is positioned in the opened position, a whole of the lifting member is positioned an outside of the movement locus.

An image forming system includes an image forming apparatus having an apparatus main body, a sheet feeding cassette, a manual bypass tray, an opening/closing detection part and a sheet feeding source setting part. The apparatus main body has an input part to which a printing instruction is input. The manual bypass tray is displaced into an open posture and into a close posture. The sheet feeding source setting part sets the sheet feeding cassette or the manual bypass tray as a sheet feeding source. When the opening/closing detection part detects that the manual bypass tray is displaced from the close posture to the open posture and the printing instruction is input to the input part, regardless of the sheet feeding source input to the input part, the sheet feeding source setting part sets the manual bypass tray as the sheet feeding source.

In an image forming apparatus to which a finisher is connected, a power source control unit shifts the image forming apparatus to a power saving state. The image forming apparatus is inhibited from being shifted to the power saving state when it is detected that a sheet for which a binding process is to be performed is set in the finisher. The image forming apparatus may be permitted to be shifted to the power saving state when it is not detected that the sheet is set in the finisher.

In an image forming apparatus to which a finisher is connected, a power source control unit shifts the image forming apparatus to a power saving state. The image forming apparatus is inhibited from being shifted to the power saving state when it is detected that a sheet for which a binding process is to be performed is set in the finisher. The image forming apparatus may be permitted to be shifted to the power saving state when it is not detected that the sheet is set in the finisher.

A fixing member that fixes a lower surface of an apparatus having a caster to an upper surface of a base includes: an engagement part that is inserted through a through hole provided in the lower surface of the apparatus, extends along an upper side of the lower surface of the apparatus, and is engaged with the lower surface of the apparatus; an attachment part that extends along an upper side of the upper surface of the base so as to face the engagement part and is attached to the upper surface of the base; a connection part that has a bent part bent away from the engagement part, is attached to the engagement part at one end thereof and is attached to the attachment part at the other end thereof, and connects the engagement part and the attachment part by passing through the through hole; and a load receiving part that receives a load by making contact with a lower side of the lower surface of the apparatus. The one end of the connection part is located on a rear side relative to the other end of the connection part in a direction in which the engagement part extends.

A retracting device includes a housing that is disposed in or on an accommodating unit to be pulled out from an apparatus including a protrusion and that has a groove extending from a first position to a second position and having an opening formed at the first position, the first position corresponding to a position of the protrusion when the accommodating unit moving in a direction in which the accommodating unit is accommodated into the apparatus reaches a predetermined position and the second position corresponding to a position of the protrusion when the accommodating unit is accommodated in the apparatus, and a movable unit that is disposed in the housing and that moves, when the accommodating unit reaches the predetermined position and the protrusion enters the opening, while holding the protrusion to cause the protrusion to move along the groove and with respect to the housing toward the second position.

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 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 manual feed tray that is provided at an opening in a sidewall of an apparatus body of the image forming apparatus and opens or closes the opening by an opening/closing operation; a guide portion that supports movement of the manual feed tray based on the opening/closing operation between a first position where the manual feed tray is upright along the sidewall to close the opening and a second position where the manual feed tray inclines toward outside of the apparatus body to open the opening, and guides the manual feed tray in the second position from the opening to within the apparatus body to retract the manual feed tray within the apparatus body; a sheet feed mechanism that feeds a sheet on the retracted manual feed tray; and an image forming device that forms an image on the sheet fed from the manual feed.

In an image forming apparatus to which a finisher is connected, a power source control unit shifts the image forming apparatus to a power saving state. The image forming apparatus is inhibited from being shifted to the power saving state when it is detected that a sheet for which a binding process is to be performed is set in the finisher. The image forming apparatus may be permitted to be shifted to the power saving state when it is not detected that the sheet is set in the finisher.