Abstract:
A sheet folding device includes a folding rollers pair, a folding blade, a movable guide, and a driving mechanism. The folding rollers pair includes a first roller and a second roller, and causes a sheet conveyed in a first conveyance direction to pass through a first nip area between the rollers. The folding blade is selectively disposed in a folding position and in a retracting position. The movable guide can reciprocate between a covering position covering the second roller disposed downstream of the first roller in the first conveyance direction and the first nip area and a non-covering position exposing the second roller and the first nip area. The drive mechanism disposes the folding blade in the folding position while disposing the movable guide in the non-covering position, and disposes the folding blade in the retracting position while disposing the movable guide in the covering position.
Abstract:
To provide an image forming apparatus whose detection range of a person by using a pyroelectric sensor is adjustable without adjusting sensitivity of the pyroelectric sensor, an image forming apparatus includes: an image forming apparatus main body; and a pyroelectric sensor that detects presence of a person based on light received from the periphery of the image forming apparatus main body, wherein the pyroelectric sensor is rotatably mounted to the image forming apparatus main body.
Abstract:
A shutter member of a toner case includes a compatible key and an engaged portion. A storage portion for storing the toner case includes a compatible member rockably supported at a position that faces the shutter member during an insertion process of the toner case. The compatible member includes a first contact portion and a first engaging portion. The first contact portion is located on a forward side of a rocking shaft of the compatible member in the insertion direction. The first engaging portion is located on a backward side of the rocking shaft in the insertion direction. During an insertion process of the toner case, the first engaging portion of the compatible member is engaged with the engaged portion so that the shutter member moves from a closing position to an opening position.
Abstract:
An image forming apparatus includes a toner replenishing portion, a waste toner collecting portion, and a toner container. The toner container is attachable to the toner replenishing portion and the waste toner collecting portion. The toner container includes a first lever switchable between first and second positions, and a second lever switchable between third and fourth positions. The toner replenishing portion includes a first actuating portion configured to, while the toner container is being attached to the toner replenishing portion, prohibit an attachment of the toner container, and a second actuating portion configured to switch the second lever to the fourth position. The waste toner collecting portion includes a third actuating portion configured to, while the toner container is being attached to the waste toner collecting portion, prohibit an attachment of the toner container, and a fourth actuating portion configured to switch the first lever to the second position.
Abstract:
A toner container is attachable to and detachable from a toner supply portion of an image forming apparatus. The toner container includes an attaching portion configured to be engaged with an attached portion of the toner supply portion such that the toner container is selectively attached to the toner supply portion. The attached portion includes an engaged portion around which first interruption keys are disposed. The attaching portion includes an engaging portion and a plurality of key members. The engaging portion is configured to be engaged with the engaged portion. The key members are larger in number than the first interruption keys and include second interruption keys formed in correspondence with the first interruption keys. Among the key members, the second interruption keys that interrupt with the first interruption keys are cut so that the engaging portion and the engaged portion can be engaged with each other.
Abstract:
A developer container is fitted in a first direction to an image forming apparatus for forming an image on a sheet. The developer container includes a main body and a protrusion. An inner space filled with a developer is formed in the man body. The protrusion protrudes outward from an outer wall of the main body. The protrusion includes a plurality of wall surface parts facing in a direction opposite to the first direction. An order in which the plurality of wall surface parts are arranged when viewed in the first direction is different from an order in which the plurality of wall surface parts are arranged when viewed in a second direction intersecting with the first direction. A plurality of wall parts are formed integrally to connect the plurality of wall surface parts through the plurality of wall parts.
Abstract:
A toner transportation device according to the present disclosure includes a transportation screw that has a rotational shaft and a transportation fin formed on an outer circumferential surface of the rotational shaft and a toner transportation pipe that has a circular shape in cross section. The transportation screw is rotatably positioned in the toner transportation pipe. A support member is attached to the rotational shaft that has a bearing portion having an annular shape and rotatably fitted onto the rotational shaft and that has a plurality of leg portions radially protruding outward from an outer circumferential surface of the bearing portion. A distance between an axis of the rotational shaft and a tip of each leg portion is greater than a radius of the transportation fin and equal to or less than a radius of an inner circumferential surface of the toner transportation pipe.
Abstract:
A toner conveying device of the present disclosure includes a conveying screw, a toner conveying pipe, and a plurality of convex portions that are formed on an inner wall surface of the toner conveying pipe. The conveying screw has a rotary shaft and a conveying vane that is formed on an outer peripheral surface of the rotary shaft. The toner conveying pipe has a circular section, and the conveying screw is rotatably disposed inside the toner conveying pipe. Each of the convex portions is formed within an area defined by half the circumference along the inner wall surface of the toner conveying pipe and supports the conveying screw so that an axial center of the rotary shaft substantially coincides with a center axis of the toner conveying pipe.
Abstract:
An image forming apparatus includes a toner replenishing portion, a waste toner collecting portion, and a toner container. The toner container is attachable to the toner replenishing portion and the waste toner collecting portion. The toner container includes a first lever switchable between first and second positions, and a second lever switchable between third and fourth positions. The toner replenishing portion includes a first actuating portion configured to, while the toner container is being attached to the toner replenishing portion, prohibit an attachment of the toner container, and a second actuating portion configured to switch the second lever to the fourth position. The waste toner collecting portion includes a third actuating portion configured to, while the toner container is being attached to the waste toner collecting portion, prohibit an attachment of the toner container, and a fourth actuating portion configured to switch the first lever to the second position.
Abstract:
A toner case includes a case main body, a supplying port, a collecting port, a supplying shutter, and a collecting shutter. The supplying shutter opens the supplying port in accordance with attachment of the case main body to a supplying attachment part, closes the supplying port in accordance with detachment of the case main body from the supplying attachment part, and closes the supplying port in a state that the case main body is attached to a collecting attachment part. The collecting shutter opens the collecting port in accordance with attachment of the case main body to the collecting attachment part, closes the collecting port in accordance with detachment of the case main body from the collecting attachment part, and closes the collecting port in a state that the case main body is attached to the supplying attachment part.