A touch panel has a display region for an operation screen and senses an outer object touching the display region. A vibrator unit applies vibration to the display region. In response to the touch panel sensing the object, a response controller unit instructs the vibrator unit to apply to the display region vibration responsive to the object. The response controller unit checks whether an image processing unit is under waiting or operating condition at the time the touch panel senses the object, and when the image processing unit is under the operating condition, sets the responsive vibration to a level lower than when the image processing unit is under the waiting condition.

An optical scanning apparatus includes a deflector for scanningly deflecting a beam; a scanning lens for imaging the beam deflected by the deflector on a surface; a casing for a light source, the deflector and the lens; and an elastic member urging the lens toward the casing along an optical axis. The lens is provided with an abutment at a beam emergent side of the lens, the abutment abutting to the casing, and is provided with a limiting portion at a side opposite from the emergent side, the limiting portion limiting movement in the opposite direction. The elastic member and the limiting portion limits the movement of the lens in the direction opposite to the direction of the lens. When the lens contacts a positioning portion of the casing, a gap is provided between the elastic member and the limiting portion with respect to the direction.

An image forming apparatus comprises a sensor, a base, a clamping section and a limiting section. The sensor includes a hook having a claw section. The sensor is held on the base. The clamping section and the limiting section are arranged on the base. The claw section is clamped with the clamping section. The limiting section is elastically deformable when the sensor is mounted on the base. When the claw section is clamped with the clamping section, the limiting section faces the hook from the opposite side of the clamping section so as to limit the position of the hook.

An image reading device includes first and second image reading platforms that are separated from each other with a separation member, an image reading element movable between positions facing the first and second image reading platforms, a pair of sliding members that is slideable in a direction according to the movement of the image reading element on a pair of sliding paths that extends in the direction and is disposed so as to be spaced apart from each other in another direction intersecting with the direction and that is provided so as to at least partially overlap with the first and second image reading platforms; and a pair of protrusions disposed on parts of the pair of sliding paths positioned on both sides of the separation member in the another direction and that protrudes further toward the pair of sliding members from the first and second image reading platforms.

An image forming apparatus comprises a sensor, a base, a clamping section and a limiting section. The sensor includes a hook having a claw section. The sensor is held on the base. The clamping section and the limiting section are arranged on the base. The claw section is clamped with the clamping section. The limiting section is elastically deformable when the sensor is mounted on the base. When the claw section is clamped with the clamping section, the limiting section faces the hook from the opposite side of the clamping section so as to limit the position of the hook.

An image forming apparatus comprises a sensor, a base, a clamping section and a limiting section. The sensor includes a hook having a claw section. The sensor is held on the base. The clamping section and the limiting section are arranged on the base. The claw section is clamped with the clamping section. The limiting section is elastically deformable when the sensor is mounted on the base. When the claw section is clamped with the clamping section, the limiting section faces the hook from the opposite side of the clamping section so as to limit the position of the hook.

In accordance with an embodiment, a casing of an image formation apparatus includes a first support member and a second support member. The first support member comes into contact with a lower end of a first support leg part projecting downward from the optical scanning device and supports the lower end of the first support leg part. The second support member comes into contact with a lower end of a second support leg part different from the first support leg part projecting downward from the optical scanning device and supports the lower end of the second support leg part. The second support member is separated from the first support member in a non-contact state.

An image forming apparatus includes a frame configured to support a process member configured to execute part of an image formation process on a recording material, a fan placed on a placement surface of the frame so as to be relatively movable with respect to the frame, a duct fixed to the frame and having a communication port communicating with an air intake port or an air outlet port of the fan, a restriction portion configured to restrict a movable range of the fan, and an elastic member disposed to be nipped by the duct and the fan.