Abstract: A sheet housing device includes: a housing; and a sheet cassette. The sheet cassette has: a detection mechanism; and a pair of cursors. The detection mechanism includes: a detection switch; a first actuator; and a second actuator. A first cursor pushes down a pressed part of the first actuator and a connection part pushes up a connected part of the second actuator, and the second actuator swings in a first rotation direction from a first posture and the second actuator is set to a second posture in which a switch pressing part is capable of pressing a switch pressed part. The switch pressing part has: a first pressing part that is connected to a front end of a pressing arm; and a second pressing part that is disposed to protrude further toward an upstream side in the first rotation direction than the pressing arm does.

Abstract: A medium transporting apparatus includes an endless conveyor belt having an outer surface to which a sheet P adheres, at least two rollers, which are a first roller and a second roller, around which the conveyor belt extends. The second roller is located downstream of the first roller in a medium transporting direction. The medium transporting apparatus also includes a backing plate that supports an inner surface of the conveyor belt at a position between the first roller and the second roller. In the medium transporting apparatus, the backing plate includes a hollow-containing portion that is formed at an upstream end of the backing plate in the medium transporting direction. The hollow-containing portion has a plurality of hollows formed therein in a width direction that intersects the medium transporting direction. The plurality of hollows are formed in a support surface that supports the conveyor belt.

Abstract: A printing apparatus includes a transport portion that transports a medium, a printing head that performs printing on the medium, a medium detection device that is arranged upstream of the printing head in a transport direction of the medium and detects a side edge of the medium in a width direction intersecting with the transport direction, and a control unit that controls the transport portion, the printing head, and the medium detection device.

Abstract: A manual feed tray includes a tray body and a lift unit, and the lift unit includes a lift plate, a lift spring and a pair of cursors. The cursor includes a guide portion. When the manual feed tray is closed from a sheet feeding state of the lift plate, the guide portion comes into contact with a facing wall portion, whereby a downstream side of the lift plate in a covering direction moves downward. Thus, even if the manual feed tray is closed with the lift plate moved upward, the lift plate smoothly moves downward.

Abstract: A paper dust collecting member removes and collects paper dust attached to a conveying roller, and is attachable along the attaching direction parallel to the axial direction of the conveying roller via an opening portion provided in a side plate of an apparatus main body. The paper dust collecting member has a removing member and a holding member. The removing member removes paper dust attached to the conveying roller. The holding member holds the removing member. The holding member includes a protrusion portion which is disposed, on its distal end portion side, along a side surface of the removing member and which protrudes in the thickness direction of the removing member beyond a contact surface of the removing member.

Abstract: A fixing device fixes a toner image onto a piece of paper by conveying the piece of paper formed with the toner image while nipping the piece of paper at a fixing nip, and includes: an endless belt that is rotated; a pressing member that presses the belt; a support member that supports the pressing member; a sheet wound around the pressing member along the conveyance direction; and a pressurizing member that forms the fixing nip with the belt, wherein a part of an upstream region of the sheet existing more on an upstream side in a winding direction than a contact region contacting the belt and the pressing member and a part of a downstream region of the sheet existing more on a downstream side in the winding direction than the contact region are interposed between the pressing member and the support member, and are fixed by pressing force.

Abstract: A printing apparatus includes a print section configured to perform printing on a medium, a supply path configured to supply the medium toward the print section, a feeding roller configured to feed the medium along the supply path from an upstream side to a downstream side in a transport direction, a toothed roller provided on the downstream side of the feeding roller in the transport direction, a drive source configured to rotate the feeding roller and the toothed roller, and a controller configured to control driving of the drive source. The controller performs rotation control for rotating the feed roller prior to the rotation of the toothed roller with which the medium has collided. The controller performs the rotation control when the controller determines that the grammage of the medium is greater than or equal to a threshold value.

Abstract: A fixing device includes a fixing roller heated to a predetermined temperature by a heater; a pressure belt in pressure contact with the fixing roller; and a pressing part which presses the pressure belt toward the fixing roller. The fixing device adopts a belt-nip system and fixes a toner image formed on a recording medium to the recording medium by heat and pressure while the recording medium is nipped and conveyed through a nip part. The nip part is formed by the fixing roller and the pressure belt and includes an adhesion nip and a separation nip. The pressing part includes a pressing member, a sheet member which covers the pressing surface of the pressing member along a conveying direction of the recording medium, and a pressing fluid which is filled at the adhesion nip between the pressing member and the sheet member.

Abstract: A printing apparatus includes a print section configured to perform printing on a first side of a medium and then perform printing on a second side that is a back side of the first side, a supply path configured to supply the medium toward the print section, a feeding roller configured to feed the medium along the supply path from an upstream side to a downstream side in a transport direction, a toothed roller provided on the downstream side of the feeding rollers in the transport direction, a drive source configured to rotate the feeding roller and the toothed roller, and a controller configured to control driving of the drive source. The controller performs rotation control for rotating the feed rollers prior to the rotation of the toothed roller with which the medium has collided.

Abstract: A medium transporting apparatus includes an endless conveyor belt having an outer surface to which a sheet P adheres, at least two rollers, which are a first roller and a second roller, around which the conveyor belt extends. The second roller is located downstream of the first roller in a medium transporting direction. The medium transporting apparatus also includes a backing plate that supports an inner surface of the conveyor belt at a position between the first roller and the second roller. In the medium transporting apparatus, the backing plate includes a hollow-containing portion that is formed at an upstream end of the backing plate in the medium transporting direction. The hollow-containing portion has a plurality of hollows formed therein in a width direction that intersects the medium transporting direction. The plurality of hollows are formed in a support surface that supports the conveyor belt.

Abstract: A fixing apparatus includes the following. A heating unit includes an outer surface driven to rotate and heats a sheet on which color material is transferred. A reflecting unit reflects heat emitted from the heating unit. The reflecting unit further includes, a covering unit which covers at least a portion of the outer surface of the heating unit so that there is a predetermined space; and a movable unit which is provided in the covering unit and which can be switched between a first position and a second position in which air in the space can flow more easily than the first position. The fixing apparatus also includes, a switching unit which switches the movable unit between the first position and the second position; and a controller which controls the switching unit.

Abstract: A lock device includes a lock cover, a restricting portion, a drive source, a biasing portion, and a pressing portion. The lock cover is opened and closed when a developer storing portion storing developer is attached or detached. The restricting portion, when the lock cover is closed, is engaged with the lock cover in such a way as to restrict the lock cover from being opened. The drive source drives the restricting portion in such a way as to release an engagement between the restricting portion and the lock cover. The biasing portion biases the restricting portion in a direction opposite to a direction in which the drive source drives the restricting portion. The pressing portion presses the lock cover in an opening direction in conjunction with an operation of the drive source to release the engagement between the restricting portion and the lock cover.

Abstract: A biasing portion biases a restricting portion in a direction opposite to a direction in which a drive source drives the restricting portion. Each of a lock cover and the restricting portion includes an engaging portion that has a contact surface, and when the lock cover is closed, the contact surfaces of the lock cover and the restricting portion are engaged with each other while facing each other. The contact surfaces of the lock cover and the restricting portion are not parallel to each other in a state where the lock cover is closed, and as the lock cover is displaced in an opening direction of the lock cover when the drive source is not driving the restricting portion, one or both of the engaging portions are bent and the contact surfaces become parallel to each other.

Abstract: A printing device including: a first conveyance path and a second conveyance path configured to conveying print media; a skew correction unit configured to correct skewing of the print medium conveyed along the first conveyance path; and a print unit configured to print on the print medium conveyed on the first conveyance path or the second conveyance path; the first conveyance path and the second conveyance path merging downstream of the skew correction unit; print media conveyed from the second conveyance path.

Abstract: A fixing apparatus includes: a heating member that has an outer circumferential surface to be driven in a circulative manner and heats a sheet; a heat radiation suppression member that covers a part of an outer circumferential surface of the heating member to have a predetermined gap and suppresses heat radiation, wherein the heat radiation suppression member has a movable part capable of moving to a first position and a second position more distant than the first position from a part covered by the heating member; a moving unit that moves the movable part to the first position or the second position; a jam detection unit that detects a jam of a sheet in the vicinity of the downstream side end portion of the nip part; and a control unit that controls the moving unit such that the movable part is moved from the first position to the second position.

Abstract: An image forming apparatus includes an inner cover, an outer cover, a first pressing portion, and a restricting portion. The inner cover is opened and closed for a developer storage portion storing developer to be attached or detached. The outer cover is made of resin and provided on an outer side of the inner cover, and opened and closed in a same direction as the inner cover. The first pressing portion is provided on the outer cover and, when the outer cover is closed in a state where the inner cover is opened, comes into contact with and presses the inner cover in a closing direction. When the inner cover is closed, the restricting portion is engaged with the inner cover at a lock position located on an upstream side of a predetermined closing position of the inner cover in the closing direction, and restricts opening of the inner cover.

Abstract: According to one embodiment, a semiconductor device includes a semiconductor substrate including an element region, a guard ring provided on an outer periphery of the element region and including a first interconnect and a first plug which electrically couples the first-interconnect and a first well region, a second interconnect provided above the first interconnect via a first insulating layer and non-electrically coupling to the first interconnect, and a first circuit coupled to the second interconnect. The first circuit detects one of a crack and a peeling of the guard ring in accordance with a break in the second interconnect or a short circuit between the second interconnect and the first interconnect.

Abstract: A fixing device includes a fixing roller heated to a predetermined temperature by a heater; a pressure belt in pressure contact with the fixing roller; and a pressing part which presses the pressure belt toward the fixing roller. The fixing device adopts a belt-nip system and fixes a toner image formed on a recording medium to the recording medium by heat and pressure while the recording medium is nipped and conveyed through a nip part. The nip part is formed by the fixing roller and the pressure belt and includes an adhesion nip and a separation nip. The pressing part includes a pressing member, a sheet member which covers the pressing surface of the pressing member along a conveying direction of the recording medium, and a pressing fluid which is filled at the adhesion nip between the pressing member and the sheet member.

Abstract: A biasing portion biases a restricting portion in a direction opposite to a direction in which a drive source drives the restricting portion. Each of a lock cover and the restricting portion includes an engaging portion that has a contact surface, and when the lock cover is closed, the contact surfaces of the lock cover and the restricting portion are engaged with each other while facing each other. The contact surfaces of the lock cover and the restricting portion are not parallel to each other in a state where the lock cover is closed, and as the lock cover is displaced in an opening direction of the lock cover when the drive source is not driving the restricting portion, one or both of the engaging portions are bent and the contact surfaces become parallel to each other.

Abstract: A lock device includes a lock cover, a restricting portion, a drive source, a biasing portion, and a pressing portion. The lock cover is opened and closed when a developer storing portion storing developer is attached or detached. The restricting portion, when the lock cover is closed, is engaged with the lock cover in such a way as to restrict the lock cover from being opened. The drive source drives the restricting portion in such a way as to release an engagement between the restricting portion and the lock cover. The biasing portion biases the restricting portion in a direction opposite to a direction in which the drive source drives the restricting portion. The pressing portion presses the lock cover in an opening direction in conjunction with an operation of the drive source to release the engagement between the restricting portion and the lock cover.