An imaging device having a door-actuated feed roll separator mechanism. A pair of opposed panels of a frame of the imaging device are positioned parallel to a media path. A feed roll pair in the media path has a drive roll fixedly and rotatably mounted between the panels and a backup roll translateably mounted between the panels. A pair of cam followers are rotatably mounted to the backup roll. The backup roll is biased against the drive roll forming a feed nip. A door pivotally mounted along a bottom end to the frame substantially covers the media path. A pair of door-mounted, spring-biased actuators engage with the pair of cam followers. With the door lowered, the cam followers rotate with a camming surface thereon contacting the drive roll, translating the backup roll away from the drive roll and opening the feed nip to allow for removal of jammed media.

An image forming apparatus includes an apparatus body, an image forming unit, an opening and closing cover, a fixed cover that constitutes a part of an exterior of the apparatus body with the opening and closing cover, and is configured to form a boundary portion with an upper edge of the opening and closing cover in a vertical direction, a positioning portion including a first engagement portion provided in the opening and closing cover, and a second engagement portion provided in the fixed cover, a first conveyance guide provided on the opening and closing cover, and a second conveyance guide provided on the fixed cover. The first engagement portion and the second engagement portion are configured to engage with each other to perform positioning of the opening and closing cover and the fixed cover in the vertical direction and positioning of the first conveyance guide and the second conveyance guide.

A document conveyance apparatus includes a document conveyance section, a cover, an opening and closing detection sensor, a document detection sensor, and a control section. The control section detects opening and closing of the cover on the basis of an output value of the opening and closing detection sensor and detects whether or not there is a document in a predetermined detection position on the basis of the output value of the document detection sensor. If, when the output value of the document detection sensor has changed from a value indicating an opened state of the cover to a value indicating a closed state thereof, the output value of the document detection sensor is a value indicating that there is the document, the control section detects a half-closed state where the cover is not completely closed.

A damper mechanism has first and second rail members, a biasing member, and a slide member. The first rail member is fixed inside the opening/closing member along the up/down direction, and has an oblong guide hole formed therein extending along the longitudinal direction. The second rail member has fixed to a top end part thereof an engaging pin inserted through the guide hole, and has a bottom end part swingably supported on the apparatus main body. The biasing member biases the first and second rail members in a direction in which these approach each other. The slide member is made of resin fixed to the engaging pin, slides while in contact with the first rail member and the opening/closing member, and prevents contact between the engaging pin and an inner circumferential rim of the guide hole.

Provided is an opening/closing unit including a cover member and a conveying unit. The cover member is provided to one side surface of an apparatus main body so as to open and close a sheet conveying path. The conveying unit is provided inside of the cover member in the apparatus main body. The sheet conveying path includes a first conveying path formed between the conveying unit and the apparatus main body, and a second conveying path formed between the conveying unit and the cover member. When an operating lever of the cover member is rotated to a second position, opening operation of the cover member is enabled. When the operating lever is rotated to a first position in a state where the cover member is opened, the conveying unit rotates with respect to the cover member so that the second conveying path is opened.

An automatic document feeder (300) includes a housing (301), conveyance roller pairs (313 to 317), and a pressure releasing mechanism. The housing (301) is openably/closably attached to a main body of an image forming apparatus. The conveyance roller pairs (313 to 317) pinch an original document sheet with pressure and feed the original document sheet. The pressure releasing mechanism detaches one rollers (313b to 317b) of the conveyance roller pairs (313 to 317) from the other rollers (313a to 317a) in conjunction with an operation of opening the housing 301 against the main body.

An image forming apparatus and roller separation device are provided. The image forming apparatus including a main body having a print unit, a first paper feeding unit containing print paper and insertable in or pullable from the main body, a feed roller in the main body feeding the print paper from the first paper feeding unit to the print unit and comprising a driven roller contacting a driving roller, an elastic member applying an elastic force to the driven roller in a direction to contact the driving roller, a handle member in the main body movable to a first position and a second position, and a separation member connected to the handle member and switched to a normal position separated from the driven roller and a separation position separating the driven roller from the driving roller.

An image forming apparatus includes an image forming unit, a paper loading base on which manual-feed paper is loaded, a manual-feed paper conveying unit, and a dustproof cover which covers the paper loading base being in the overhang state. The paper loading base has a lower end rotatably supported on one outer surface portion of the device main body, and is opened from an upper end thereof and disposed at a predetermined oblique angle or in a horizontal overhang state such that an overhang side becomes an upper side in an oblique direction. The manual-feed paper conveying unit is conveys the manual-feed paper on the paper loading base onto a paper conveyance path one by one. The dustproof cover includes a base which engages with the paper loading base, and an opening-and-closing cover which is rotatably connected to the base and is opened upwardly on the overhang side.

An image forming apparatus includes a main assembly; an image forming portion for forming an image on a sheet; an openable member rotatably supported by the main assembly; a first feeding guide provided on the openable member; a second feeding guide provided in the main assembly, wherein when the openable member is closed, a sheet feeding path for feeding the sheet is formed by the first and second feeding guides; a hole provided in the first feeding guide; and an illumination device, provided on the openable member, for illuminating at least a part of the second feeding guide through the hole when the openable member is open.

An image forming apparatus includes an image forming portion configured to form an image on a sheet, a sheet feeding device configured to feed the sheet, an openable member configured to be opened for exposing at least a part of a sheet feeding path of the sheet feeding device to an outside of the image forming apparatus, an operating portion operated for opening the openable member, and an illumination device configured to illuminate the operating portion.