Abstract: An image forming apparatus comprises a light-emission unit, a reflecting member, a light-receiving unit, a detection unit, a ventilation unit configured to send air to the reflecting member, and a control unit. The control unit adjusts at least one of an operation duration and an airflow rate of the ventilation unit, in accordance with a detection signal outputted by the light-receiving unit when a sheet is not at a position where light crosses a conveyance path.

Abstract: An elastic force of an elastic member 11 required for rotating a driven rotational body 8b is decreased. A first rotational body 8d and a second rotational body 9a arranged downstream of a driven rotational body 8b in a drive train that transmits a driving force from a driving rotational body 7 to a driven member 4 are included. The first rotational body 8d rotates in synchronization with the driven rotational body 8b. The second rotational body 9a is rotated by the first rotational body 8d and rotates the driven member 4. The first rotational body 8d rotates without rotating the second rotational body 9a when the driven rotational body 8b rotates by an elastic force of an elastic member 11.

Abstract: An image forming apparatus includes a laser scanner unit, an engine controller, and an image controller. The laser scanner unit includes a polygon mirror configured to reflect a laser beam to scan a photosensitive drum, and a BD sensor configured to detect the laser beam reflected by the polygon mirror to output a BD signal. The engine controller generates an image formation BD signal synchronized with the BD signal. The image controller identifies a reference reflection face based on the number of times of low levels of an image formation BD signal that has been sampled for a predetermined period from a falling edge of the image formation BD signal. The image controller corrects image data based on the identified reflection face to control image formation processing.

Abstract: An image forming apparatus, detachably connected to a consumable product including a plurality of function units integrated with each other, includes an acquisition unit that acquires a life of each of the plurality of function units and a setting unit that sets an operation in a case where each acquired life reaches a preset value.

Abstract: A configuration in which print heads disposed on an upper cover and a control substrate disposed on a housing are electrically connected via cables. The cables connect the print heads and the control substrate while passing through the back side of the rotating shaft in the housing so that a part of the cables contacts the rotating shaft or a grounded metallic receiving member disposed near the rotating shaft for supporting a part of the cables.

Abstract: An image forming apparatus includes a storage unit and a charging amount acquisition unit. The charging amount acquisition unit forms a measurement toner image on the image carrier while changing the frequency of the alternating current voltage of the development bias, acquires a tilt of a measurement straight line representing a relationship between the change amount of the frequency and a density change amount of the measurement toner image based on the change amount of the frequency and a result of detecting density of the measurement toner image in the density detecting unit, and acquires the charging amount of the toner based on the acquired tilt of the measurement straight line and the reference information in the storage unit.

Abstract: An image forming apparatus includes an image forming device, an image position detector, and an image density detector. The image forming device forms an image on a surface of a recording medium. The image position detector detects a position of the image. The image density detector detects a density of the image. The image forming device forms a position detection image on a surface of a first recording medium. The image position detector detects a position of the position detection image on the surface of the first recording medium. The image forming device forms a density detection image on a second recording medium. The image density detector detects a density of the density detection image on the surface of the second recording medium.

Abstract: A measurement apparatus includes a sheet stacking portion provided above a first conveyance path and on which a second sheet discharged out of a second conveyance path is stacked. The sheet stacking portion includes an extension tray configured to support the sheet discharged out of the second conveyance path and to be movable between a first position and a second position, the first position being a position where the extension tray is located inside a width of the measurement apparatus in the horizontal direction, and the second position being a position where the extension tray is located above an upstream apparatus and is overlapped with the upstream apparatus when viewed in a gravity direction.

Abstract: An image forming system includes an image forming apparatus including a housing where an image forming unit is provided and a strain detector, a hardware processor, and a storage. The strain detector detects strain of a bottom plate of the housing. The processor and the storage are included in or provided outside the image forming apparatus. The processor obtains a first detection signal from the detector, stores strain measured data based on the first detection signal as reference data in the storage, obtains a second detection signal from the detector after storing the reference data, compares strain measured data based on the second detection signal with the reference data, and determines whether adjustment of a supporting point height of the bottom plate to reduce the strain due to change over time from a time of the obtainment of the reference data is required.

Abstract: An image forming apparatus includes an image forming unit for forming an image on a sheet and a sheet conveying unit for conveying the sheet along a conveying path extending in a substantially horizontal direction in a lower portion of the image forming unit. The image forming apparatus includes a recovery container which is provided in front of the image forming unit and above the conveying path, and accommodates the waste toner discharged from the image forming unit. The image forming apparatus includes a waste toner conveying pipe that conveys the waste toner discharged from the image forming unit to the recovery container, without passing through the rear portion and the side portion of the image forming unit.

Abstract: A developing device includes a housing, a developer holding device, and a directing device. The housing includes a container portion containing developer and has a developing opening. The developing device has a through portion disposed at a portion of the housing including a downstream edge portion at a downstream portion of the developing opening in a direction in which the developer holding device is rotated. The through portion has an inlet, an outlet, and a passage that connects the inlet and the outlet to each other so as to allow part of an airflow generated by rotation of the developer holding device to be introduced thereinto and flow therethrough. The directing device extends from a portion of the housing opposite to the developing opening with the inlet of the through portion interposed therebetween toward the developer holding device so as to direct the part of the airflow toward the inlet.

Abstract: An image forming apparatus includes a transfer portion to transfer a toner image to a sheet, a fixing portion to fix the toner image, a reverse conveyance portion to perform a reverse conveyance operation in which the sheet is conveyed to a first direction and thereafter conveyed to a second direction that is opposite to the first direction, and a reverse guide configured to guide the sheet in the reverse conveyance operation. A conveyance guide pair forms a conveyance path through which the sheet subjected to the reverse conveyance operation passes, and guides the sheet toward the transfer portion, and an air blowing portion blows air toward the conveyance path. In addition, a ventilation portion is provided through which air blowing from the air blowing portion toward the reverse guide passes, the air having passed through the ventilation portion flowing along the reverse guide.

Abstract: An image post-processing method includes a glossiness control step of irradiating a fixed toner image with a glossiness control light. The toner image is formed with a toner containing a compound that absorbs light. The glossiness control light is capable of at least reducing a glossiness of the fixed toner image. The glossiness control light has a maximum emission wavelength in a wavelength region which is absorbed by the compound.

Abstract: A fixing member including a base, an elastic layer and a bonding layer is provided. The base contains a polyimide resin. The elastic layer is disposed on the base and contains silicone rubber. The bonding layer is disposed between the base and the elastic layer and is a cured product of a composition containing a siloxane polymer having a glycidyl group.

Abstract: A fixing device is for fixing a toner image on a recording medium an image forming apparatus. The fixing device includes a fixing belt, a heating member, a nip area member, a pressing member, and a protrusion. The fixing belt is held by the heating member and the nip area member. The pressing member presses the fixing belt against the nip area member while being rotationally driven. The toner image is fixed on the recording medium in a nip area where the pressing member presses the fixing belt against the nip area member. The protrusion is in contact with the inner surface of the fixing belt. In the fixing device, the fixing belt is in contact with small areas only other than the heating area and the nip area to reduce the heat loss.

Abstract: Provided is a fixing member includes: a substrate; and an elastic layer on the substrate, wherein the elastic layer contains a rubber and fillers dispersed in the rubber, and wherein an average value of area ratios of large-particle diameter fillers is 20% or more and 40% or less, and the large-particle diameter fillers have an average array degree fL of 0.00 or more and 0.15 or less, an average value of an area ratios of small-particle diameter fillers is 10% or more and 20% or less, the small-particle diameter fillers have an average array degree fS of 0.20 or more and 0.50 or less, and the small-particle diameter fillers have an average array angle ?S of 60° or more and 120° or less.

Abstract: An image forming apparatus includes a controller that receives a print job, which includes the sheet type and print settings of simplex printing or duplex printing. A sheet stacked on a feeding unit is discharged to a discharge portion with an upper surface of the sheet facing different directions in duplex printing and in simplex printing in a first mode, and the sheet stacked on the feeding unit is discharged to the discharge portion with the upper surface of the sheet facing the same direction in the duplex printing and in the simplex printing in a second mode.

Abstract: An image forming apparatus includes a developer information acquisition unit. The developer information acquisition unit performs a developer deterioration information acquisition operation. In the developer deterioration information acquisition operation, the developer information acquisition unit acquires a tilt of a measurement straight line representing the relationship between the change amount of the frequency in a first measurement toner image forming operation and the density change amount of the measurement toner image based on the change amount of the frequency in the first measurement toner image forming operation and a result of detecting density of the measurement toner image in a density detecting unit, and acquires a toner charging amount based on the acquired tilt of the measurement straight line and the reference information in the storage unit so as to acquire information relating to deterioration of developer based on the acquired toner charging amount.

Abstract: In accordance with an embodiment, an image forming apparatus comprises an image forming section, a fixing section and a controller. The image forming section forms a toner image with at least one selected from a first toner having a first fixing temperature area and a second toner having a second fixing temperature area of which a lower limit fixing temperature is higher than the first toner. The fixing section fixes the toner image on the sheet. The controller controls a standby temperature of the fixing section to a temperature lower than the lower limit fixing temperature of the second fixable temperature area.

Abstract: In a cartridge, a developing roller is configured to rotate around a first rotational axis extending in a predetermined direction and to carry developer thereon, the developing roller having a first end and a second end apart from each other in the predetermined direction, a from-first-to-second direction being defined along the predetermined direction as being directed from the first end to the second end. A developing electrode is formed of a conductive material and is configured to be electrically connected to the developing roller, the developing electrode including a main part and a protruding portion protruding from the main part in the from-first-to-second direction. A detection body is formed of an insulating material and is rotatably supported by the protruding portion, the detection body including a first opening that exposes part of the protruding portion and a covering portion covering part of the protruding portion.