A display-and-operation device includes a housing, a display operation panel, a plurality of wireless communicators, and a control board. The display operation panel forms a display operation screen on an outer surface of the housing. The plurality of wireless communicators are included in the housing and each having an antenna to perform wireless communication with a communication object. The control board controls the display operation panel. The control board is included in the housing. The plurality of wireless communicators are arranged on a same side of the display operation screen.

An electronic device includes a display device, a state detector, a storage device, an input device, and a control device. The control device causes the display device to display, when the open state is detected by the state detector, and the user information stored in the storage device and information received through the input device agree with each other, first information stored in the storage device in association with user information on a first display panel exposed in an open state of the display device, and restricts the display device from displaying the first information, when the open state of the display device is detected by the state detector, but the user information and the information received through the input device disagree, or when a folded state is detected by the state detector.

A printing apparatus comprises a main body, an operation panel configured to pivot about a pivot shaft relative to the main body, a stopper that has one end pivotably connected to the operation panel, and has a cam face on a surface thereof, a guide member that is provided on the main body, has a first guide face and a second guide face, and is configured to guide the stopper such that the stopper is slidable in a longitudinal direction, a first pressing member configured to press the stopper against the first guide face while being in contact with the cam face of the stopper, and a second pressing member configured to come into contact with a face of the stopper different from the cam face, and press the stopper against the second guide face.

A hinge device includes a support member, a pivotable member supported by the support member, a first gear located at one of the support member and the pivotable member, a second gear located at the other of the support member and the pivotable member, a friction member configured to apply rotational frictional resistance to the second gear, and means for disengaging. The pivotable member is configured to pivot about a pivot axis between a closed position and a different position where the pivotable member is in a position that is different from the closed position. The second gear is configured to rotate in engagement with the first gear based on pivoting of the pivotable member. When the pivotable member is at the closed position, the means for disengaging disengages the first gear and the second gear from each other.

An operation panel unit is used for an image forming apparatus. The operation panel unit is configured to input various control instructions to the image forming apparatus. The operation panel unit includes a display portion, an NFC reading portion, and a USB port. The NFC reading portion and the USB port are disposed on different surfaces of the display portion.

Provided is an input device comprising: a touch panel which receives an operation from a user; an external member having an external surface substantially the same as a surface of the touch panel; and a near field communication unit which is provided near the surrounding of the touch panel and inside of the external member and performs communication with an object to be detected which is brought close to a detection range, wherein a position corresponding to the near field communication unit of the external member projects from the touch panel and is inclined such that the side close to the touch panel is higher than the side distant from the touch panel.

A document scanner includes a casing and a document cover disposed above the casing. The casing includes a document glass and houses an image scanner. The document cover has one end portion and the other end portion opposite to the first end portion in a first direction and is configured to pivotally move about the one end portion between a closed position in which the other end portion covers the document glass and an open position in which the other end portion uncovers the document glass. The other end portion has an end surface that intersects, when the document cover is at the closed position, with an upper surface of the document glass. The end surface has an indication indicating a location to which an external device is to be brought into proximity to establish short-range wireless communication between the document scanner and the external device.

An image formation apparatus includes: a control panel to receive an input of an operator; a main device to execute an operation instruction corresponding to the input; and a tilt changing section to change a tilt of the control panel relative to the main device. The control panel includes a touch panel having a touch surface to be touched, a control panel housing covering the touch panel, a proximity sensor to sense an object in the proximity of the control panel, and circuitry that: determines a presence or an absence of an operation of the tilt changing section by the operator based on a result of the sensing by the proximity sensor; outputs an operation instruction to the main device based on a touch input on the touch surface; and refrains from outputting the operation instruction based on a determination that the tilt is changed.

In an image forming apparatus, an event detection unit detects occurrence of an event which requires replacement of a part, a notification unit notifies guidance for replacing the part if the event detection unit detects occurrence of the event, and a control unit ends a notification of the guidance using, as conditions, a case in which a cover open to perform the replacement is set in a closed state and a case in which an input of an instruction that the replacement has completed is accepted.

An operation panel includes: a housing; a reading unit configured to read information from a medium allowed to approach a predetermined position of the housing; a first operation unit provided outside a predetermined range including the position in a front surface of the housing and configured to receive an operation; and a second operation unit provided within the range, configured to receive an operation, and configured to receive the operation less easily than the first operation unit.