An image forming apparatus includes a housing; a fixing device that is disposed in the housing and that heats an unfixed image made of developer to fix the unfixed image to a recording medium; an exhaust device having an air inlet through which air heated by the fixing device is sucked, an air outlet through which the air sucked through the air inlet is discharged from the housing, a flow path portion having a flow path space through which the air flows from the air inlet to the air outlet, and an air flow generator that generates an exhaust air flow in the flow path space; and plural mesh members that are located in a region between and including the air inlet and the air outlet and arranged in a direction in which the air flows, the mesh members collecting fine particles contained in the air that is sucked.

An image forming apparatus includes an image forming unit, a fixing unit, a plurality of exterior covers forming an exterior of the image forming apparatus, a fan configured to suck outside air into the image forming apparatus through an air intake port, a temperature sensor configured to detect a temperature of the outside air sucked by the fan, and a partition member disposed upstream the temperature sensor and downstream the air intake port in an airflow generated by the fan, the partition member dividing an air intake path through which the outside air sucked through the air intake port passes into a first path passing through a fixing unit side and a second path passing through a temperature sensor side.

An image forming apparatus includes a photosensitive drum, a development device, a fixing device, an apparatus main body, and a fan including a rotating shaft that extends in a longitudinal direction of the photosensitive drum and a blade around the rotating shaft. The development device develops a toner image on the photosensitive drum. The fixing device fixes the toner image from the photosensitive drum to a recording material. The apparatus main body is provided with a discharge port from which the toner-fixed recording material is discharged. A length of the fan rotating shaft in the longitudinal direction is longer than a diameter of a rotational trajectory of the blade. The fan is provided on a downstream side of the fixing device in a discharge direction in which the recording material is discharged from the discharge port and overlaps a part of the development device when viewed in a vertical direction.

A control portion of an image forming apparatus causes an operation of a first fan start and then causes a second fan to start. The time when the operation of the second fan starts is from a predetermined time before the time when the leading end of one sheet reaches a fixing nip to the time when the rear end of the one sheet passes through the fixing nip. In this way, since the second fan operates after the first fan operates, fine particle dust is hardly discharged to the outside of the image forming apparatus, and it is possible to suppress dew condensation inside the image forming apparatus.

A fixing device includes: a heating section that heats in a non-contact manner a front surface of a recording medium; a feeding section that feeds the recording medium while causing the front surface to be opposed to the heating section; and a maintaining section that, in order to enable the recording medium to be fed by the feeding section while a rear surface that is opposite to the front surface, and that is in an image region where an unfixed-image is formed on the front surface is in a non-contact state, maintains the non-contact state.

A recording material cooling device includes a belt, a plurality of rollers, a belt cooling member, a recording material feeding member, a deposited matter removing member, a deposited matter receiving container, a roller holding member, and a supporting member for supporting the roller holding member so as to be swingable between a first position where the belt and the recording material feeding member contact each other and a second position where the belt is spaced from the recording material feeding member. The supporting member supports the roller holding member so that a swing center is positioned on one end side with respect to a rotational axis direction of the rollers. The receiving container includes a wall surface portion for preventing overflow of the deposited matter received through an opening of the receiving container when the roller holding member is positioned in the second position.

According to one embodiment, a heating device includes a fixing belt configured to be rotated and a pressure roller configured to abut against the fixing belt and be driven to cause the fixing belt to rotate. A heater is configured to heat the fixing belt. A motor is configured to drive the pressure roller to rotate. A current sensor is configured to measure a driving current of the motor. A controller is configured to stop the heater based on the measured driving current.

A fixing member for electrophotography having an endless shape has a base layer having an endless shape, and an elastic layer on the outer circumferential surface of the base layer. The elastic layer includes a silicone rubber and a filler dispersed in the silicone rubber. The total amount of the filler compounded in the elastic layer is 30 vol % or less based on the total volume of the elastic layer. The elastic layer satisfies the relation of λtd>λmd>λnd. λtd is a thermal conductivity of the elastic layer in the circumferential direction, λnd is a thermal conductivity of the elastic layer in the thickness direction, and λmd, is a thermal conductivity of the elastic layer in the longitudinal direction. λtd is 2.0 W/(m.Math.K) or more, and λnd is 1.3 W/(m.Math.K) or more.

A fixing device includes: a heating section that heats in a non-contact manner a front surface of a recording medium; a feeding section that feeds the recording medium while causing the front surface to be opposed to the heating section; and a maintaining section that, in order to enable the recording medium to be fed by the feeding section while a rear surface that is opposite to the front surface, and that is in an image region where an unfixed-image is formed on the front surface is in a non-contact state, maintains the non-contact state.

A heating apparatus includes a cylindrical film and a pressing element that rotates with the cylindrical film and forms a nip with the cylindrical film. A medium is conveyed through the nip from an upstream side to a downstream side. The apparatus further includes a guide member arranged inside the cylindrical film and contacting the cylindrical film, and a substrate arranged inside the cylindrical film and on which a heating element is disposed. A downstream end of the substrate is located downstream of a downstream end of the nip.