A cartridge includes a photosensitive drum and a developing roller configured to develop an electrostatic latent image formed on the photosensitive drum. A first frame rotatably supports the photosensitive drum and a second frame rotatably supports the developing roller. A movable member is movable with respect to the second frame, with the movable member including a first force receiving surface and a second force receiving surface. The second frame is movable relative to the first frame between a contact position in which the developing roller is in contact with the photosensitive drum and a spaced position in which the developing roller is spaced from the photosensitive drum. The second force receiving surface is capable of being moved by the first force receiving surface between a first position and a second position, and the second frame is capable of being moved by the second force receiving surface from the contact position toward the spaced position.

An electronic apparatus includes a main body, a door, and a projecting member. The door is attached to the main body to be openable and closable with respect to the main body and covers components contained in the main body. The projecting member projects from an inside surface of the door toward an interior of the main body. The projecting member is graspable by a user.

An image forming apparatus for forming an image on a recording medium, the image forming apparatus includes a discharge tray for supporting the recording medium, an internal unit disposed inside the apparatus main body, and a door serving as a part of outer surface members of the apparatus main body, the door being opened and closed to expose and cover an inside of the apparatus main body to the outside, wherein, by opening of the door, a fixing member that fixes the discharge tray to the apparatus main body is exposed to the outside, and removing of the fixing member from the apparatus main body allows the discharge tray to be detached from the apparatus main body without removing the outer surface members other than the door, and wherein detaching of the discharge tray from the apparatus main body allows the internal unit to be accessed.

An image forming apparatus includes a casing, an image forming unit, an outer cover, a first inner cover arranged to face an inner side of the outer cover in a closed state, the first inner cover being made of resin, a second inner cover arranged to face the inner side of the outer cover in the closed state, the second inner cover being made of resin, a first fan, and a second fan. The first inner cover includes a first duct configured to guide air taken in from an exterior of the image forming apparatus by rotation of the first fan to the image forming unit. The second inner cover includes a second duct configured to guide air taken in from the exterior of the image forming apparatus by rotation of the second fan to the image forming unit.

A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.

An image forming apparatus may include a photosensitive member, a developing device including a developing roller, pressing members configured to engage with the developing device and springs configured to urge the pressing members. In some examples, each of the pressing members may be configured to contact and move the developing device between various positions based on the urging of the springs. Additionally or alternatively, various ends of a contact surface of the developing roller configured to contact developer may be disposed relative to an axis line of the developing roller and pressing surfaces of the pressing members.

A lever member is displaceably provided to a toner container. A container locking mechanism locks the toner container at a mounting position in a container mounting portion when the lever member is operated from a first operation position to a second operation position in a state where the toner container is located at the mounting position. A locking member is displaceable between a lever locking position and a lever releasing position. A locking control portion controls a drive portion to displace the locking member to the lever locking position when a remaining amount of the toner detected by the remaining amount detection portion is equal to or greater than a predetermined amount, and controls the drive portion to displace the locking member to the lever releasing position when the remaining amount of the toner detected by the remaining amount detection portion is less than the predetermined amount.

An image forming apparatus includes a housing to store an image forming unit that forms an image on a sheet, doors, a cover part, and holding members. Each of the doors rotates around a rotational axis to be opened and closed relative to the housing and includes a positioning shaft and a projection. When each of the doors is in an opened state, an inside of the image forming apparatus is exposed. The cover part is provided in the housing and has fitting holes into which the positioning shafts are fitted. Each of the holding members holds a different one of the doors in a closed state. When each of the doors is in the closed state, each of the positioning shafts included in the doors is fitted into a different one of the fitting holes.

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.

An image forming apparatus includes a cover and a locking mechanism. The locking mechanism restricts a turning of the cover from a closed position. The locking mechanism has a first locking member, a second locking member and a lever member. The first locking member and the second locking member are movable between a lock position where they engage with the apparatus main body and an unlock position where they disengage with the apparatus main body. The lever member moves the first locking member and the second locking member between the lock position and the unlock position. An engagement quantity of the first locking member with the apparatus main body is larger than that of the second locking member at the lock position. The first locking member is formed with an engaging piece which is turnable by turning of the cover in an opening direction at the unlock position.