A sheet conveyer having a sheet tray, a tray-driving mechanism, a conveyance guide, a feed roller, a separator, a conveyer, a conveyer-driving mechanism, a controller, and a sheet sensor to detect sheets on the sheet tray, is provided. The conveyer-driving mechanism includes a transmission-active portion and a transmission-passive portion. A conveying velocity to convey the sheets by the conveyer is higher than a conveying velocity to convey the sheets by the feed roller and the separator. The transmission-active portion and the transmission-passive portion are rotatable about a transmission axis. The transmission-passive portion rotates passively by being pushed by the transmission-active portion. After the sheet sensor detects absence of the sheets, and before the transmission-passive portion starts rotating passively, the controller conducts a specific action to move the sheet tray downward by controlling the tray-driving mechanism.

A multi-function apparatus employs an in-body sheet discharge type configuration. The image forming device includes a front door and a multi-purpose tray. The front door is movable between a closed position set along a side surface at one side of a case of the image forming device and an opened position opened at the one side with respect to the side surface. The front door has an opening formed therein. The multi-purpose tray is provided to be selectively located at a non-use state at which the multi-purpose tray closes the opening and an in-use position at which the multi-purpose tray opens the opening. When the front door is located at the closed position and the multi-purpose tray is located at the non-use position, an upper end surface of the multi-purpose tray is exposed upward.

A sheet tray provided with first and second trays respectively having first and second supporting surfaces. The second tray slidably assembled, in a first direction, to the first tray. The first and second supporting surfaces are configured to support sheets thereon. The first tray and the second tray have a first guide portion and a second guide portion which are formed at central parts, in a second direction perpendicular to the first direction, respectively. The second guide portion is configured to slidably contact the first guide portion to guide the slide movement of the second tray. A first separation regulating part formed on the first guide portion, and a second separation regulating part formed on the second guide portion are configured to engage with each other in the vertical direction to prevent separation of the first and second trays in the vertical direction, exceeding a particular dimension.

A multi-function apparatus employs an in-body sheet discharge type configuration. The image forming device includes a front door and a multi-purpose tray. The front door is movable between a closed position set along a side surface at one side of a case of the image forming device and an opened position opened at the one side with respect to the side surface. The front door has an opening formed therein. The multi-purpose tray is provided to be selectively located at a non-use state at which the multi-purpose tray closes the opening and an in-use position at which the multi-purpose tray opens the opening. When the front door is located at the closed position and the multi-purpose tray is located at the non-use position, an upper end surface of the multi-purpose tray is exposed upward.

A medium conveying apparatus includes a main body, a placement board that is movably supported by the main body, an extension member that is movably supported by the placement board, a lever that is movably supported by the placement board, and a mechanism that moves the extension member to a contraction position when the lever is located at a protrusion position, and moves the extension member to an expansion position when the lever is located at a pushed position, wherein the lever is away from an abutting portion fixed to the main body when the placement board is located between a storage position and a midway position, and the lever comes into contact with the abutting portion and moves toward the pushed position when the placement board is located between a unfolding position and the midway position and when the placement board moves toward the unfolding position.

A multi-function apparatus employs an in-body sheet discharge type configuration. The image forming device includes a front door and a multi-purpose tray. The front door is movable between a closed position set along a side surface at one side of a case of the image forming device and an opened position opened at the one side with respect to the side surface. The front door has an opening formed therein. The multi-purpose tray is provided to be selectively located at a non-use state at which the multi-purpose tray closes the opening and an in-use position at which the multi-purpose tray opens the opening. When the front door is located at the closed position and the multi-purpose tray is located at the non-use position, an upper end surface of the multi-purpose tray is exposed upward.

A sheet conveyer having a sheet tray, a tray-driving mechanism, a conveyance guide, a feed roller, a separator, a conveyer, a conveyer-driving mechanism, a controller, and a sheet sensor to detect sheets on the sheet tray, is provided. The conveyer-driving mechanism includes a transmission-active portion and a transmission-passive portion. A conveying velocity to convey the sheets by the conveyer is higher than a conveying velocity to convey the sheets by the feed roller and the separator. The transmission-active portion and the transmission-passive portion are rotatable about a transmission axis. The transmission-passive portion rotates passively by being pushed by the transmission-active portion. After the sheet sensor detects absence of the sheets, and before the transmission-passive portion starts rotating passively, the controller conducts a specific action to move the sheet tray downward by controlling the tray-driving mechanism.

A multi-function apparatus employs an in-body sheet discharge type configuration. The image forming device includes a front door and a multi-purpose tray. The front door is movable between a closed position set along a side surface at one side of a case of the image forming device and an opened position opened at the one side with respect to the side surface. The front door has an opening formed therein. The multi-purpose tray is provided to be selectively located at a non-use state at which the multi-purpose tray closes the opening and an in-use position at which the multi-purpose tray opens the opening. When the front door is located at the closed position and the multi-purpose tray is located at the non-use position, an upper end surface of the multi-purpose tray is exposed upward.

A medium conveying apparatus includes a main body, a placement board that is movably supported by the main body, an extension member that is movably supported by the placement board, a lever that is movably supported by the placement board, and a mechanism that moves the extension member to a contraction position when the lever is located at a protrusion position, and moves the extension member to an expansion position when the lever is located at a pushed position, wherein the lever is away from an abutting portion fixed to the main body when the placement board is located between a storage position and a midway position, and the lever comes into contact with the abutting portion and moves toward the pushed position when the placement board is located between a unfolding position and the midway position and when the placement board moves toward the unfolding position.

A multi-function apparatus employs an in-body sheet discharge type configuration. The image forming device includes a front door and a multi-purpose tray. The front door is movable between a closed position set along a side surface at one side of a case of the image forming device and an opened position opened at the one side with respect to the side surface. The front door has an opening formed therein. The multi-purpose tray is provided to be selectively located at a non-use state at which the multi-purpose tray closes the opening and an in-use position at which the multi-purpose tray opens the opening. When the front door is located at the closed position and the multi-purpose tray is located at the non-use position, an upper end surface of the multi-purpose tray is exposed upward.