In a medium conveying device, a projector projects light, a projection light amount of the light changes, at every fixed time, to a first projection light amount and a second projection light amount less than the first projection light amount, a receiver receives the light projected from the projector, a processor determines, at fixed sampling timings, whether a reception light amount of the receiver is at a first reception light level or a second reception light level smaller than the first reception light level, determines, when the reception light amount alternately changes to the first reception light level and the second reception light level, that a medium is not present on a conveying path, and determines, when the reception light amount is fixed to either the first reception light level or the second reception light level, that the medium is present on the conveying path.

A sheet feeding device includes a stacking member, a feeding unit, and a detachable separation unit. The feeding unit feeds sheets stacked from the stacking member. The separation unit separates the fed sheets one by one. The separation unit includes a rotating member to abut and separate from the feeding unit and to rotate, a biasing member to bias the rotating member toward the feeding unit, and an engaged member to be engaged with an engagement member included in the sheet feeding device. The engagement member can move to a first position where the engagement member is engaged with the engaged member, and a second position away from the engaged member. Where the engagement member moves from the first to the second position when the separation unit is attached to the sheet feeding device, the separation unit moves in a detachment direction using the biasing member.

An image reading apparatus includes: a supply tray, which supports sheets to be supplied and includes a movable plate configured to move from a first position to a second position as the sheet supported by the supply tray is decreased, the second position being higher than the first position; a discharge tray; a conveyance guide; a reading sensor; a discharge unit, which includes a discharge opening to discharge the sheet conveyed by the conveyance guide to the discharge tray and is configured to move from a third position to a fourth position as the sheet supported by the paper feed tray is decreased, the fourth position being higher than the third position; and a first drive source, which generates a drive force, wherein the discharge unit is configured to move by receiving the drive force and to transmit the drive force to the movable plate.

Provided is an automatic laminating machine, including a supporting plate assembly, a case, a limiting assembly, a film separation assembly, and an input roller assembly. A lower end of the supporting plate assembly extends into and is rotatably connected inside the case. The limiting assembly and the input roller assembly are rotatably connected inside the case. The film separation assembly is arranged inside the case, and located below the input roller assembly. One end of the limiting assembly is rotatably connected to the supporting plate assembly.

A sheet feeding device includes a sheet feeding body, a sheet separating body, a loading body, a support, and a pressing body. The sheet feeding body is configured to feed a recording sheet. The sheet separating body is configured to separate the recording medium and convey the recording medium together with the sheet feeding body. The loading body is configured to load the recording medium to be fed by the sheet feeding body. The support is disposed above the sheet separating body. The pressing body is made of metal and rotatably supported by the support between the loading body and the sheet separating body. The pressing body includes a part-shaped face to contact or face the recording medium. A surface of the part is covered with a metal plating.

A sheet stacker includes a sheet adjuster movable to regulate a position of a sheet in the sheet stacker, an operation portion to release the sheet adjuster when the operation portion moves in a predetermined direction, and a lock movable together with the sheet adjuster and the operation portion to regulate a movement of the operation portion in the predetermined direction.

A medium feeding device includes a medium placement portion on which a bunch of media is placed, a feed roller that feeds a lowermost medium of the bunch of media placed on the medium placement portion, a separation roller that is provided at a position facing the feed roller and separates a medium from the bunch of media, and a plurality of restricting portions that are provided on an upstream side of a nip position between the separation roller and the feed roller at an interval in a medium width direction which is a direction intersecting a medium feeding direction and come into contact with leading ends of upper media of the bunch of media excluding at least the lowermost medium such that the leading ends are restricted from coming into contact with the separation roller regardless of whether the separation roller is deformed or not.

A printing apparatus determines a change in torque of a motor that moves a pick arm for translating print media, determines based on the change in torque whether a media in present adjacent to the pick arm.

An embodiment includes an apparatus in an ATM to transport a document. The apparatus includes a feed wheel, a stripping tire, a clutch outer-hub and a clutch inner-hub. The feed wheel may be rotated by a first-rotational driver to move the document in a forward direction while the stripping tire is rotated by movable contact with the feed wheel. The clutch inner-hub prevents the stripping tire from rotating in a direction to cause the document to move in a reverse direction when the first-rotational driver rotates the feed wheel. Alternatively, the stripping tire is rotated by a second-rotational driver to move the document in the reverse direction when the feed wheel is not rotated by a first-rotational driver while the clutch outer-hub prevents the stripping tire from rotating in a direction to cause the document to move in the forward direction.

A medium carrying device includes a first stopper, a second stopper, a lever, and a mechanism that, when the lever is positioned in a blocking area, places the first stopper at a first blocking position and places the second stopper at a second blocking position, when the lever is positioned in a opening area, releases the first stopper to be positioned at a first opening position and releases the second stopper to be positioned at a second opening position. When the lever is positioned at a boundary position in between the blocking area and the opening area, a lever portion of the lever gets positioned in between a first stopper portion of the first stopper positioned at the first blocking position and a second stopper portion of the second stopper positioned at the second blocking position.