Abstract: An image forming apparatus includes an intermediary transfer member, a toner image forming unit, a rotatable transfer member, a cleaning unit, a feeding unit, a feeding portion and an executing portion configured to execute a supplying operation for supplying a supplying toner image to a cleaning portion. The executing portion forms the supplying toner image at a position including a position different from a position where an adjusting toner image for adjusting an image forming condition is formed, with respect to a widthwise direction crossing a movement direction of an intermediary transfer member provided in contact with the rotatable transfer member. The executing portion performs the supplying operation at least one time in a double-sided image forming job and does not perform the supplying operation in a single-sided image forming job.

Abstract: Relationships of LB1>LR1 and LN1<LN2 are satisfied, where LB1 is a length of a first contact area in which a first brush roller and an endless belt come into contact with each other. LR1 is a length of a second contact area in which the first roller and the endless belt come into contact with each other. LN1 is a length of an area in which the first contact area and the second contact area overlap with each other. A third contact area is an area in which the second brush roller and the endless belt come into contact with each other. A fourth contact area is an area in which the second roller and the endless belt come into contact with each other. LN2 is a length of an area in which the third contact area and the fourth contact area overlap with each other.

Abstract: A controller measures a stop duration time when an intermediate transfer belt and a secondary transfer belt are stopped, and based on a measurement result, rotates and stops the intermediate transfer belt such that the stretched position by stretch rollers of the intermediate transfer belt is changed. At the same time, the controller rotates and stops the secondary transfer belt such that a stretched position by stretch rollers of the secondary transfer belt is changed. A time from starting to stopping the rotation of the intermediate transfer belt and a time from starting to stopping the rotation of the secondary transfer belt are overlapped.

Abstract: When a drive roller is at a stopped state, an execution portion executes a move mode in which a time from when a rotation of a drive roller has been stopped is measured, and based on the measured result, rotation of the drive roller is started and stopped. In the move mode, a portion of a secondary transfer belt having been at a first contact position in the stopped state is moved to a position other than the first contact position and the second contact position, and the rotation of the drive roller is stopped.

Abstract: Relationships of LB1>LR1 and LN1<LN2 are satisfied, where LB1 is a length of a first contact area in which a first brush roller and an endless belt come into contact with each other. LR1 is a length of a second contact area in which the first roller and the endless belt come into contact with each other. LN1 is a length of an area in which the first contact area and the second contact area overlap with each other. A third contact area is an area in which the second brush roller and the endless belt come into contact with each other. A fourth contact area is an area in which the second roller and the endless belt come into contact with each other. LN2 is a length of an area in which the third contact area and the fourth contact area overlap with each other.

Abstract: A controller measures a stop duration time when an intermediate transfer belt and a secondary transfer belt are stopped, and based on a measurement result, rotates and stops the intermediate transfer belt such that the stretched position by stretch rollers of the intermediate transfer belt is changed. At the same time, the controller rotates and stops the secondary transfer belt such that a stretched position by stretch rollers of the secondary transfer belt is changed. A time from starting to stopping the rotation of the intermediate transfer belt and a time from starting to stopping the rotation of the secondary transfer belt are overlapped with the other.

Abstract: In an image forming apparatus including a pressing member arranged on an inner circumferential surface of an intermediate transfer belt, configured to correct a position of the intermediate transfer belt in the width direction to be fit within a movable region, positions of both ends of the pressing member in the width direction are respectively arranged outside positions of both ends of the movable region.

Abstract: An image forming apparatus includes: an image bearing member; an image forming portion; an intermediary transfer member; a transfer member; an executing portion capable of executing a first mode in which a transfer voltage based on a current detected when a predetermined voltage is applied to the transfer member is applied to the transfer member and capable of executing a second mode in which a transfer voltage is applied to the transfer member to provide a predetermined constant-current; and a controller enabling transition between a stand-by state where the image formation is enabled and a sleep state less than in power consumption than the stand-by state. The controller executes the first mode in a job after main switch actuation and before the transition to the sleep state, and executes the second mode in an initial job after the transition from the sleep state to the stand-by state.

Abstract: At a time for resetting a transfer voltage after a predetermined time period from the performance of ATVC in both a color mode and a monochrome mode, ATVC is performed only in a currently running mode. A transfer voltage in another mode that the ATVC has not been performed at that time is set based on results of the ATVC performed in both the color and monochrome modes and a result of the ATVC performed in the other mode at that time.

Abstract: At a time for resetting a transfer voltage after a predetermined time period from the performance of ATVC in both a color mode and a monochrome mode, ATVC is performed only in a currently running mode. A transfer voltage in another mode that the ATVC has not been performed at that time is set based on results of the ATVC performed in both the color and monochrome modes and a result of the ATVC performed in the other mode at that time.

Abstract: An image formation system includes an image forming apparatus for forming different color toner images on a recording material having a toner reception layer, a first heater for heating and pressing the toner image on the recording material, and a heater for heating and pressing the toner image on the recording material having been heated and pressed by the first heater. The first heater is operable so as to provide a granularity R of the toner image satisfying 0.5?R?4.0 and a glossiness G of the toner image satisfying 5?G?40, the second heater being operable so as to provide a granularity R of the toner image that is not more than 4.0 and a glossiness G of the toner image that is not less than 60.

Abstract: At a time for resetting a transfer voltage after a predetermined time period from the performance of ATVC in both a color mode and a monochrome mode, ATVC is performed only in a currently running mode. A transfer voltage in another mode that the ATVC has not been performed at that time is set based on results of the ATVC performed in both the color and monochrome modes and a result of the ATVC performed in the other mode at that time.

Abstract: An image-forming apparatus includes an image-bearing member supporting a toner image, a transfer portion at which the toner image on the image-bearing member is transferred on a sheet; and first and second guides that guide the sheet to the transfer portion and respectively have first and second contact portions so that a surface of the sheet on which the toner image is transferred contacts these portions. The first contact portion is located at an upstream side of the second contact portion in a sheet-conveying direction. After a rear end of the sheet passes the first contact portion, the rear end of sheet passes the second contact portion while bending the second guide toward the image-bearing member. The second guide is bent from a position of an upstream side in the sheet-conveying direction with respect to a position of the first contact portion.

Abstract: Provided is an image forming apparatus, including: a first image bearing member; a first transfer member that comes into contact with the intermediate transfer member; a colored toner image forming portion; a second image bearing member; a second transfer member; and a transparent toner image forming portion for forming the transparent toner image wherein the transparent toner image forming portion is provided on an upstream side with respect to the colored toner image forming portion in a movement direction of the intermediate transfer member, and a distance between a most upstream end of the second contact area and the second transfer member in a rotation direction is larger than a distance between a most upstream end of the first contact area and the first transfer member in a rotation direction.

Abstract: An image forming apparatus includes a developing apparatus for developing an electrostatic image with a developer comprising at least a toner and a first external additive, the developing apparatus including a plurality of developing devices, containing toners different in color or lightness from each other, in which at least two developing devices contain a dark color toner and a light color toner which have an identical hue and different lightnesses and the developing device containing the light color toner is subjected to a developing operation prior to another developing device; a first transfer apparatus for sequentially transferring toner images, which have been developed by the plurality of developing devices, onto an intermediary transfer member; and a second transfer apparatus for transferring the toner images from the intermediary transfer member all together onto a transfer medium The first external additive includes particles having an aspect ratio of not less than 1.0 and not more than 1.

Abstract: Provided is an image forming apparatus, including: a first image bearing member; a first transfer member that comes into contact with the intermediate transfer member; a colored toner image forming portion; a second image bearing member; a second transfer member; and a transparent toner image forming portion for forming the transparent toner image wherein the transparent toner image forming portion is provided on an upstream side with respect to the colored toner image forming portion in a movement direction of the intermediate transfer member, and a distance between a most upstream end of the second contact area and the second transfer member in a rotation direction is larger than a distance between a most upstream end of the first contact area and the first transfer member in a rotation direction.

Abstract: An image forming apparatus, includes a first image bearing member; a first transfer member that comes into contact with either an intermediate transfer member or a recording material bearing member; a colored toner image forming portion; a second image bearing member; a second transfer member; and a transparent toner image forming toner. The transparent toner image forming portion is positioned on an upstream side with respect to the colored toner image forming portion in a movement direction of the intermediate transfer member or the recording material bearing member. As a result, a distance between a most upstream end of an area of contact between the intermediate transfer member or the recording material bearing member and the second transfer member in a rotation direction is larger than a distance between a most upstream end of an area of contact between the intermediate transfer member or the recording material bearing member and the first transfer member in a rotation direction.

Abstract: An image formation system includes image forming means for forming different color toner images on a recording material having a toner reception layer; first image heating means for heating and pressing the toner image on the recording material; second image heating means for heating and pressing the toner image on the recording material having been heated and pressed by the first image heating means; and wherein the first image heating means is operable so as to provide a granularity R of the toner image satisfying 0.5?R?4.0 and a glossiness G of the toner image satisfying 5?G?40, and the second image heating means is operable so as to provide a granularity R of the toner image satisfying not more than 4.0 and a glossiness G of the toner image satisfying not less than 60.

Abstract: An image forming apparatus includes a developing apparatus for developing an electrostatic image with a developer comprising at least a toner and a first external additive, the developing apparatus including a plurality of developing devices, containing toners different in color or lightness from each other, in which at least two developing devices contain a dark color toner and a light color toner which have an identical hue and different lightnesses and the developing device containing the light color toner is subjected to a developing operation prior to another developing device; a first transfer apparatus for sequentially transferring toner images, which have been developed by the plurality of developing devices, onto an intermediary transfer member; and a second transfer apparatus for transferring the toner images from the intermediary transfer member all together onto a transfer medium The first external additive includes particles having an aspect ratio of not less than 1.0 and not more than 1.

Abstract: An image forming apparatus includes a developing apparatus for developing an electrostatic image with a developer comprising at least a toner and a first external additive, the developing apparatus including a plurality of developing devices, containing toners different in color or lightness from each other, in which at least two developing devices contain a dark color toner and a light color toner which have an identical hue and different lightnesses and the developing device containing the light color toner is subjected to a developing operation prior to another developing device; a first transfer apparatus for sequentially transferring toner images, which have been developed by the plurality of developing devices, onto an intermediary transfer member; and a second transfer apparatus for transferring the toner images from the intermediary transfer member all together onto a transfer medium The first external additive includes particles having an aspect ratio of not less than 1.0 and not more than 1.