An imaging system includes a rotatable image carrier; a rotatable developer carrier, a storage container, and an air flow generator. The developer carrier transfers toner to the image carrier at a developing region located between the image carrier and the developer carrier. The storage container stores the developer carrier. The air flow generator is separated from the storage container by a gap, and rotates in a rotational direction that is opposite to a rotational direction of the developer carrier, to channel an air flow through the gap when the air flow generator rotates.

An image forming apparatus includes a first air suction port sucking an air containing ozone, a second air suction port sucking an air containing the scattered toner, and a duct unit partitioned into a first duct passing through the air containing ozone and a second duct passing through the air containing toner. The duct includes a first fan generating a first air flow inside the first duct to suck the air from the first air suction port and a second fan generating a second air flow inside the second duct to suck the air from the second air suction port. An ozone filter is detachably provided to both the first and second ducts, disposed straddling the first and second ducts, and filters the ozone contained in the first and second air flows.

An exhaust device includes: a flow path section through which gas containing ozone generated inside a device body flows; a joint section connected to the flow path section with an inlet opening where hot gas generated inside the device body flows, and where gas containing ozone and hot gas are joined internally; a first air flow generator that generates an air flow which causes the gas containing ozone to flow through the flow path section and to the joint section; and a second air flow generator that causes the gas containing ozone and the hot gas to be joined and discharged from the joint section to outside the device body so that a flow rate of the joint gas discharged from the joint section to outside the device body is higher than a flow rate of the gas containing ozone to the joint section by the first air flow generator.

A first guide member guides a sheet from a sending roller pair to a discharge port. A second guide member is disposed above the first guide member such that an upstream end of the second guide member in a sheet discharge direction overlaps the first guide member, and forms an upper partition of a discharge path in an area extending from a position above an end of the first guide member to a position of a discharge roller pair. The second guide member guides the sheet to the discharge roller pair. A cooling fan blows air from below the discharge path toward a lower surface of the second guide member. The lower surface of the second guide member is formed convexly curved upward when viewed in a width direction intersecting the sheet discharge direction. The lower surface of the second guide member guides air toward the first guide member.

An image forming apparatus includes an image forming unit, a fixing unit, a heating portion and a removal unit to remove a particulate dust generated due to vaporization of a parting agent by heat in the fixing unit. The removal unit includes a sheet-like filter provided with a base layer and a collecting layer laminated on the base layer for collecting dust. The removal unit includes a holding unit to hold the filter in a cylindrical shape with the base layer outside and the collecting layer inside. The removal unit includes a fan connected to one of opening end sides of the filter held in the cylindrical shape and generates an air flow inside of the cylindrical shape which causes air passing from outside of the filter to inside to flow toward the one of the opening end sides.

An electrical apparatus includes a housing, a blower, and a duct. The housing covers a plurality of electrical components. The blower blows air. The duct guides the air that has cooled one of the plurality of electrical components to another one of the plurality of electrical components. The duct includes a fire wall.

An image forming apparatus including: an image forming device provided in a housing; a fan to cool an interior of the housing; an AC/DC board; a first temperature detecting element configured to output a signal corresponding to a temperature in the housing; a second temperature detecting element configured to output a signal corresponding to a temperature of an element mounted on the AC/DC board; and a controller configured to control the fan when at least one of a first condition and a second condition is satisfied, the first condition being a condition in which a first detection temperature detected based on the signal received from the first temperature detecting element is not less than a first temperature threshold, the second condition being a condition in which a second detection temperature detected based on the signal received from the second temperature detecting element is not less than a second temperature threshold.

Provided is an image forming apparatus, including; an imaging forming unit for forming a toner image on one surface of a recording material; a fixing unit that includes a heating unit and heats and fixes the toner image formed on the one surface; a discharging unit for discharging the recording material, on which the toner image is fixed, to a discharged paper tray; and a guide member that is disposed between the fixing unit and the discharging unit and forms a recording material conveying path for conveying the recording material from the fixing unit to the discharging unit. On the guide member, a blowing port to send air to the recording material conveying path and a suction port to suck air from the recording material conveying path are disposed on a same surface so as not to cross over the recording materials.

An image forming apparatus includes a single fan, a first air outlet port disposed so as to supply air sent from the fan to an image surface of the sheet, a second air outlet port disposed so as to supply the air sent from the fan to a surface opposite to the image surface of the sheet, and a control unit configured to control the fan. The control unit includes a first mode of controlling a rotational speed of the fan at a first rotational speed in a case where the sheet is not present in a position facing the first air outlet port and control the rotational speed of the fan at a second rotational speed lower than the first rotational speed in a case where the sheet is present in the position facing the first air outlet port.

An image forming apparatus includes a first exterior cover provided on a front surface of the image forming apparatus so as to be openable and closable, a second exterior cover provided on a side surface of the image forming apparatus, a third exterior cover fixed on a front surface side of the image forming apparatus and above the first exterior cover in a vertical direction, and a fan configured to suck outside air through a gap formed between the first exterior cover and the second exterior cover. In a state where the first exterior cover is closed, the gap formed between the first exterior cover and the second exterior cover is larger than a gap formed between the third exterior cover and the second exterior cover.