Abstract: A feeding portion includes a pickup member and a feeding member. A first sheet sensor that is arranged on an upstream side in a sheet conveyance direction with respect to a conveying member, detects a sheet conveyed along a conveyance path. A second sheet sensor detects the sheet at a position between the pickup member and the feeding member. A control portion causes the feeding portion to start feeding of a subsequent sheet when the subsequent sheet is detected by the second sheet sensor at a first timing after detection of a preceding sheet by the first sheet sensor. Furthermore, the control portion causes the feeding portion to start feeding of the subsequent sheet at a second timing later than the first timing, when the subsequent sheet is detected by the second sheet sensor at the first timing.

Abstract: An attachment and detachment structure attaches and detaches a toner container to and from an attachment unit. The toner container includes a container main body, a rotational member and a power transmission body. The rotational member rotates around an axis to agitate the toner contained in the container main body. The power transmission body is provided outside the container main body and rotates around an axis to transmit a rotational force to the rotational member. The attachment unit includes a contact body which comes into contact with the power transmission body on attachment process and detachment process of the toner container to and from the attachment unit and rotates the power transmission body. The power transmission body comes into contact with the contact body on the attachment process of the toner container to the attachment unit, and is rotated around the axis to rotate the rotational member around the axis.

Abstract: An attachment and detachment structure attaches and detaches a toner container to and from an attachment unit. The toner container includes a container main body, a rotational member and a power transmission body. The rotational member rotates around an axis to agitate the toner contained in the container main body. The power transmission body is provided outside the container main body and rotates around an axis to transmit a rotational force to the rotational member. The attachment unit includes a contact body which comes into contact with the power transmission body on attachment process and detachment process of the toner container to and from the attachment unit and rotates the power transmission body. The power transmission body comes into contact with the contact body on the attachment process of the toner container to the attachment unit, and is rotated around the axis to rotate the rotational member around the axis.

Abstract: A sheet storing cassette includes a cassette base, a sheet stacking plate, a cursor rail, a regulation cursor, and an adjustment member. The regulation cursor has a first regulating portion which forms a first sheet regulating face for positioning the sheets placed on the sheet stacking plate in the sheet feeding direction. The cursor rail has a plurality of engaged portions with which an engaging portion provided on the regulation cursor meshes when the regulation cursor is moved such that the first sheet regulating face is arranged at standard-size positions corresponding to a standard-size sheet. The adjustment member has a second regulating portion that offsets, when the adjustment member is attached to the regulation cursor arranged at one of standard-size positions, the first sheet regulating face to a second sheet regulating face corresponding to a non-standard size sheet.

Abstract: A sheet feeder includes: a cassette main body; a side cursor; and a restriction part. The cassette main body houses a sheet to be fed in a predetermined sheet feeding direction. The side cursor is installed onto the cassette main body to be slidable in a sheet width direction perpendicular to the sheet feeding direction, and positions the sheet in the cassette main body. The restriction part increases sliding load of the side cursor with respect to the cassette main body when the side cursor slides and passes a standard size point that is a stopping position on the cassette main body when a sheet of a standard size is positioned.

Abstract: A sheet storing cassette includes a cassette base, a sheet stacking plate, a cursor rail, a regulation cursor, and an adjustment member. The regulation cursor has a first regulating portion which forms a first sheet regulating face for positioning the sheets placed on the sheet stacking plate in the sheet feeding direction. The cursor rail has a plurality of engaged portions with which an engaging portion provided on the regulation cursor meshes when the regulation cursor is moved such that the first sheet regulating face is arranged at standard-size positions corresponding to a standard-size sheet. The adjustment member has a second regulating portion that offsets, when the adjustment member is attached to the regulation cursor arranged at one of standard-size positions, the first sheet regulating face to a second sheet regulating face corresponding to a non-standard size sheet.

Abstract: A sheet feeder includes: a cassette main body; a side cursor; and a restriction part. The cassette main body houses a sheet to be fed in a predetermined sheet feeding direction. The side cursor is installed onto the cassette main body to be slidable in a sheet width direction perpendicular to the sheet feeding direction, and positions the sheet in the cassette main body. The restriction part increases sliding load of the side cursor with respect to the cassette main body when the side cursor slides and passes a standard size point that is a stopping position on the cassette main body when a sheet of a standard size is positioned.

Abstract: An image forming apparatus includes a first side plate, a second side plate and a sheet feeding unit. The first and second side plates are opposite to each other. The sheet feeding unit is attached between the first and second side plates. The sheet feeding unit has a feed frame, a pickup roller, a feed roller, a separation member and a weight member. The feed frame has a first side wall supported by the first side plate in a facing manner and a second side wall supported by the second side plate in a facing manner. The pickup roller and the feed roller are supported in the feed frame. The separation member forms a nip and separates the sheet at the nip. The weight member is disposed above the feed roller in the feed frame and configured to damp vibration of the feed frame.

Abstract: A sheet conveying device includes a sheet stacking part, a conveying path and a conveying roller. The conveying roller includes a drive roller and a driven roller which is pressed against the drive roller and is driven by the drive roller to be rotated. The drive roller has a rotating drive shaft and a drive roller body rotatable together with the rotating drive shaft. The driven roller has a rotating shaft and a driven roller body supported by the rotating shaft in a rotatable manner. The driven roller body has a plurality of roller parts which are arranged in an axial direction of the rotating shaft and pressed against the drive roller body.

Abstract: An image forming apparatus includes a first side plate, a second side plate and a sheet feeding unit. The first and second side plates are opposite to each other. The sheet feeding unit is attached between the first and second side plates. The sheet feeding unit has a feed frame, a pickup roller, a feed roller, a separation member and a weight member. The feed frame has a first side wall supported by the first side plate in a facing manner and a second side wall supported by the second side plate in a facing manner. The pickup roller and the feed roller are supported in the feed frame. The separation member forms a nip and separates the sheet at the nip. The weight member is disposed above the feed roller in the feed frame and configured to damp vibration of the feed frame.

Abstract: A conveyance unit includes a cassette removably attached to an apparatus body and a conveyance interlocked part provided in the apparatus body. The cassette includes a sheet storage part for storing a sheet, a lift plate liftably provided between a lowered position and a raised position and a biasing member for biasing the sheet to contact with a pickup roller. The conveyance interlocked part includes a lever for engaging with the lift plate when the cassette is attached to the apparatus body and being liftable together with the lift plate, a pressing mechanism for pressing the lever downward, and a support member provided between the apparatus body and the lever so as to suppress a drop of the lever disengaged from the lift plate when the cassette is detached from the apparatus body.

Abstract: A sheet feeding device includes a holder member and a stopper member. The holder member is configured to house a separating member and to be attached to or detached from a conveying guide by being slid in a vertical direction. The stopper member is configured to be attached to or detached from the conveying guide by being slid in a vertical direction outside of the holder member. The stopper member has an engaged part. The holder member has an engaging part with which the engaged part is to be engaged. The holder member is attached to the conveying guide by being slid from the above side. The stopper member is attached to the conveying guide by being slid from the above side while engaging the engaged part with the engaging part. The stopper member prevents the holder member from being moved with respect to the conveying guide.

Abstract: A sheet feeding device includes a holder member and a stopper member. The holder member is configured to house a separating member and to be attached to or detached from a conveying guide by being slid in a vertical direction. The stopper member is configured to be attached to or detached from the conveying guide by being slid in a vertical direction outside of the holder member. The stopper member has an engaged part. The holder member has an engaging part with which the engaged part is to be engaged. The holder member is attached to the conveying guide by being slid from the above side. The stopper member is attached to the conveying guide by being slid from the above side while engaging the engaged part with the engaging part. The stopper member prevents the holder member from being moved with respect to the conveying guide.

Abstract: A conveyance unit includes a cassette removably attached to an apparatus body and a conveyance interlocked part provided in the apparatus body. The cassette includes a sheet storage part for storing a sheet, a lift plate liftably provided between a lowered position and a raised position and a biasing member for biasing the sheet to contact with a pickup roller. The conveyance interlocked part includes a lever for engaging with the lift plate when the cassette is attached to the apparatus body and being liftable together with the lift plate, a pressing mechanism for pressing the lever downward, and a support member provided between the apparatus body and the lever so as to suppress a drop of the lever disengaged from the lift plate when the cassette is detached from the apparatus body.

Abstract: A sheet feeding cassette according to one aspect of the present disclosure is a sheet feeding cassette that displaces a bottom plate loaded thereon with a sheet to a sheet feeding position by rotating a lift plate that abuts on a rear face of the bottom plate. The bottom plate is made of resin, and a wire is wired on the rear face of the bottom plate.

Abstract: A sheet feeding cassette according to one aspect of the present disclosure is a sheet feeding cassette that displaces a bottom plate loaded thereon with a sheet to a sheet feeding position by rotating a lift plate that abuts on a rear face of the bottom plate. The bottom plate is made of resin, and a wire is wired on the rear face of the bottom plate.

Abstract: Conveying mechanism includes first conveying element including upstream end on which feeding assembly for supplying sheet; and second conveying element for defining conveying path to guide sheet with the first conveying element, wherein the second conveying element has turning element including pivotal first and second ends, and displacement element coupled to turning element, pivotal first end is held near first conveying element, pivotal second end is coupled to the displacement element, displacement element along first conveying element defines conveying path when turning element is in a first position where turning element extends along first conveying element, and displacement element translates away from first conveying element while forming corner with turning element when turning element turns from first position to move away from first conveying element.

Abstract: An image forming apparatus including: a housing configured to accommodating an image forming portion for forming an image on a sheet; and a conveying mechanism configured to at least partially define a conveying path for guiding the sheet to the image forming portion, wherein the conveying mechanism includes a first conveying element including an upstream end on which a feeding assembly for feeding the sheet is formed, and a second conveying element confronting the first conveying element to form the conveying path in cooperation with the first conveying element, and the housing includes a rail configured to guide displacement of the second conveying element from a first position where the second conveying element forms the conveying path along the first conveying element to a second position where the second conveying element is away from the first conveying element.

Abstract: A sheet size setting device includes a first member and a second member. The first member includes a tubular holing portion having a first area and a second area in an axial direction. The second member is assembled with the first member movably in the axial direction of the tubular holding portion and includes a second indicator and a second detectable portion. A movement of the second member in the axial direction is restricted by a restricting portion. The restricting portion restricts the movement of the second member in the axial direction when the tubular holding portion is located at a first rotational position and permits the movement of the second member in the axis direction, thereby causing the second indicator to reach the first area and the second detectable portion to reach the second area, when the tubular holding portion is located at a second rotational position.

Abstract: A sheet size setting device includes a first member and a second member. The first member includes a tubular holing portion having a first area and a second area in an axial direction. The second member is assembled with the first member movably in the axial direction of the tubular holding portion and includes a second indicator and a second detectable portion. A movement of the second member in the axial direction is restricted by a restricting portion. The restricting portion restricts the movement of the second member in the axial direction when the tubular holding portion is located at a first rotational position and permits the movement of the second member in the axis direction, thereby causing the second indicator to reach the first area and the second detectable portion to reach the second area, when the tubular holding portion is located at a second rotational position.