A medium feeding device includes a device body, a tray that regulates and contains a plurality of kinds of media of different sizes in a loading area according to the sizes of the media, and a detection lever that detects whether or not the media are properly loaded in the tray. In a state in which the tray is contained in the device body, when the media are not properly loaded in the tray, the detection lever moves to a non-load detection position. When the media are properly loaded in the tray, the detection lever moves to a load detection position with a front end part being oriented toward the tray containing side, and when a pressing force is applied to the detection lever at the non-load detection position from the tray containing side, the detection lever retreats toward the tray pulling out side.

A sheet feeding device includes a raising and lowering portion, a first detecting portion, a feeding portion, a second detecting portion, and a controller. When a change in a state of the feeding roller from a state of being in an uppermost sheet feedable position to a state of being not in the uppermost sheet feedable position is detected by the second detecting portion and then a change in a state of the uppermost sheet from a state of being in a feeding position to a state of being not in the feeding position is detected by the first detecting portion, the controller controls the raising and lowering portion to raise the stacking member on the basis of a correction amount determined based on a time from change timing of the second detecting portion to change timing of the first detecting portion.

A sheet conveyor including a separation roller, a separation pad, an urging member urging the separation pad, and a feed roller unit disposed downstream relative to the separation roller in a conveyance direction, the feed roller unit including a first outer circumferential surface disposed on a first side in a width direction perpendicular to the conveyance direction, a second outer circumferential surface disposed on a second side opposite to the first side in the width direction, and a concave portion disposed between the first and second outer circumferential surfaces in the width direction, the concave portion being recessed inward in a radial direction of the first and second outer circumferential surfaces from the first and second outer circumferential surfaces, an urging member being disposed upstream relative to the concave portion in the conveyance direction and disposed between the first and second outer circumferential surfaces in the width direction.

An image forming apparatus includes an option device, the option device is coupled with a lower surface of an apparatus main body. A second connector is configured to be displaced between a first position and a second position. A push portion is configured to be pressed toward an inside of the option device when the option device is coupled with the lower surface. A link portion is pivotably supported, coupled with both the push portion and the second connector, and configured to, interlocking with the push portion being pressed, cause the second connector to be displaced from second position to first position. A first coupling portion couples the push portion with the link portion. A second coupling portion is configured to couple the second connector with the link portion. The first coupling portion and/or the second coupling portion is configured to release the coupling with the link portion.

In an image forming apparatus, a tray having first and second receiving portions is configured to move between a first position, at which at least part of the tray is positioned inside an apparatus body, and a second position, at which the tray is outside the apparatus body. The tray in the first position allows a first recording medium to be conveyed from the first receiving portion. When the tray is in the first position, the second receiving portion is configured to move between a third position, which is at an upstream side relative to a first opening of the apparatus body in a second direction, and a fourth position, which is at a downstream side relative to the third position in the second direction. The second receiving portion at the third position allows a second recording medium to be conveyed from the second receiving portion in the second direction.

An image forming apparatus includes a sheet container accommodating a recording medium therein, a sheet separating feeder including a sheet feeding body and a sheet separating body, an image forming part, and a bend applier. The sheet feeding body feeds the recording medium along with a surface movement thereof while the recording medium contacting the surface thereof. The sheet separating body forms a sheet separation nip region with the sheet feeding body and sandwiches the recording medium in the sheet separation nip region. The sheet separating feeder separates and feeds the recording medium contacting the sheet feeding body. The image forming part forms an image on the recording medium. The bend applier having a leading end of an elastic material contacts and bends the recording medium before the sheet separation nip region and generates a wrinkle extending on the recording medium in a sheet conveying direction.

A sheet feeding device includes a sheet feed tray, a conveying roller pair, and a contact-and-separation mechanism. The sheet feed tray is detachably attached to a body of an image forming apparatus. The conveying roller pair is disposed in the body of the image forming apparatus, conveys a sheet fed from the sheet feed tray attached to the body of the image forming apparatus, and includes a driving roller and a driven roller. The driving roller is rotated by a drive mechanism. The driven roller is rotated by the driving roller. The contact-and-separation mechanism separates the driven roller from the driving roller in conjunction with detachment of the sheet feed tray from the body of the image forming apparatus and brings the driven roller into contact with the driving roller by the drive mechanism when the sheet feed tray is detached from the body of the image forming apparatus.

A printing apparatus including: a feed roller, disposed in a housing, that feeds a sheet; a cam that rotates in synchronization with the feed roller; a storage cassette capable of being attached to and removed from the housing, the storage cassette storing the sheet, wherein the storage cassette includes: a sheet separation unit capable of contacting the feed roller in a state where the storage cassette is attached to the housing; a follower driven by the cam when the cam rotates; and a switching mechanism configured to switch a position of the sheet separation unit between a contact position, in which the sheet separation unit is in contact with the feed roller, and a separated position, in which the sheet separation unit is separated from the feed roller, in conjunction with movement of the follower.