A metal frame of an image forming apparatus including an image forming unit which forms an image on a sheet, comprising: a first support which supports the image forming unit; and a second support which is arranged with an interval from the first support and supports the image forming unit together with the first support; wherein the second support includes: a first sheet metal which includes a first flat surface portion in which a through-hole is formed and a bent and raised portion which is bent and raised from the first flat surface portion at a position adjacent to the through-hole, and a second sheet metal which is supported to the first sheet metal on the first sheet metal and includes a second flat surface portion which is sandwiched between the first flat surface portion and the bent and raised portion and a protruded portion which protrudes from the second flat surface portion in a plate thickness direction of the second flat surface portion at a position overlapping with the through-hole in a vertical direction.

An image forming apparatus includes a belt component, a first detachable unit that faces the belt component in an area where an outer surface of the belt component faces upward, a first housing component that houses the first detachable unit and is drawable from and loadable into the apparatus, a second detachable unit that faces the belt component in an area where the outer surface of the belt component faces downward, and a second housing component that houses the second detachable unit and is drawable from and loadable into the apparatus. With the first housing component being drawn from the apparatus, the first detachable unit is detachable from and attachable to the first housing component in a side-to-side direction. With the second housing component being drawn from the apparatus, the second detachable unit is detachable from and attachable to the second housing component in an upward direction.

An image forming apparatus includes an apparatus body including a side surface portion in which an opening is formed, a cartridge, an opening/closing member configured to be moved with respect to the apparatus body between a closed position and an opened position, a sheet stacking portion, a feed roller, and a lifting member configured to lift and lower the feed roller. In the state where the opening/closing member is positioned in the closed position, at least part of the lifting member is positioned an inside of a movement locus through which the cartridge passes in a case where the cartridge is attached to and detached from the apparatus body. In a state where the opening/closing member is positioned in the opened position, a whole of the lifting member is positioned an outside of the movement locus.

An image forming apparatus includes an image carrier unit, a developing unit, a supporting frame, a retainer and a sheet member. The image carrier unit includes an image carrier on which an electrostatic latent image is formed. The developing unit develops the electrostatic latent image with toner. The supporting frame supports the image carrier unit and the developing unit in an attachable and detachable manner. The retainer is supported by the supporting frame in a turnable manner, and positions the image carrier unit and the developing unit to the supporting frame by being turned upward. The sheet member closes a gap between the supporting frame and the retainer. The sheet member has an upper section supported by the retainer and a lower end section supported by the supporting frame, and at least one of the upper end section and the lower end section is configured to be detachable.

There is provided an image forming system that includes an image forming apparatus including, a first variable mechanism that varies from a first state to a second state or from the second state to the first state when physically operated by a user, a first detection unit configured to detect the variation of a state of the first variable mechanism, and a sound collection unit. The image forming system further includes a generation unit configured to generate, when the variation is detected by the first detection unit, first statistical information regarding at least one sound wave obtained by the sound collection unit in a period based on a timing when the variation is detected.

An image forming apparatus includes: a casing having an opening; a cover for opening and closing the opening; a cartridge attachable to the casing through the opening; and a controller. The casing includes a first memory. The cartridge includes a second memory storing consumption state information representing a consumption state of the cartridge. The controller performs: determining whether the cartridge attached to the casing is unused; storing, when the attached cartridge is unused, the consumption state information acquired from the second memory in the first memory; determining, when the image forming apparatus is powered on or the cover is closed, whether the consumption state information in the first memory and the consumption state information in the second memory match; permitting use of the cartridge when the two sets of consumption state information match; and prohibiting use of the cartridge when the two set of consumption state information does not match.

An image forming apparatus configured to form an image on a sheet, the image forming apparatus includes an apparatus body, and a detachable unit. The detachable unit includes a first positioned portion and a second positioned portion. The apparatus body includes a frame member having a first positioning portion and a second positioning portion which respectively engage with the first positioned and second positioned portion, so that the detachable unit is positioned with respect to frame member in the attaching direction and the first direction. The second positioning portion is arranged closer to a center portion of the detachable unit in the second direction than the first positioning portion.

An image forming apparatus includes an apparatus body including an opening portion, and an opening-and-closing member, a process unit detachably attached to and supported by the apparatus body, the process unit including an image bearing member, a toner storage portion, and a supply portion, a sheet supporting portion, and a rotary feeding member. When viewed in a gravity direction, the supply portion is disposed on a same side as a side on which the sheet supporting portion is disposed with respect to the image bearing member, and the opening portion is disposed on a side opposite to the side on which the sheet supporting portion is disposed with respect to the image bearing member. In a case where the opening-and-closing member is positioned at an opening position, the process unit is configured to be attached to and detached from the apparatus body through the opening portion.

An image forming apparatus is provided with a printing device, a sheet conveyance path, a protective cover, a swing member, and a biasing member. The sheet conveyance path includes an upper guide portion and a lower guide portion. The swing member is supported inside a main body and can swing upward from a standard position. The biasing member biases the swing member to the standard position. The swing member includes the upper guide portion. The protective cover includes the lower guide portion and a contact portion. The contact portion pushes the swing member upward when the protective cover pivots in an outward position from a closed position. The protective cover can pivot from the closed position to an open position as the contact portion pushes the swing member upward.

An image forming apparatus to and from which a replenishment container accommodating toner is attachable includes a replenishment port to allow replenishment of toner from the replenishment container, which is arranged outside of the image forming apparatus, to a developer container therethrough in a state where the replenishment container is attached to the replenishment port, an opening/closing portion to open and close the replenishment port, and a locking member to move between a restricting position in which the locking member restricts movement of the opening/closing portion from the closed position to the open position, and an allowing position in which the movement of the opening/closing portion from the closed position to the open position is allowed. A controller maintains, when the replenishment container is attached to the replenishment port, the locking member in the restricting position in a case where a lifetime of the cartridge is less than a threshold.