Abstract: An image forming apparatus is provided, including a conveying member configured to convey a long paper along a paper path; an image forming unit which forms an image on the long paper being conveyed by the conveying member along the paper path; an image reading unit which reads a surface of the long paper, the surface having the image formed by the image forming unit; and a color sample member which is arrangeable at a position facing the image reading unit, such that the long paper is conveyed by the conveying member to avoid passing through between the image reading unit and the color sample member. Also included is a switch between a first arrangement in which the image reading unit reads the long paper and a second arrangement in which the image reading unit faces the long paper via the color sample member and reads the color sample member, the switch being made by moving the image reading unit or by moving the color sample member and the conveying member.

Abstract: An image forming apparatus is provided, including a conveying member configured to convey a long paper along a paper path; an image forming unit which forms an image on the long paper being conveyed by the conveying member along the paper path; an image reading unit which reads a surface of the long paper, the surface having the image formed by the image forming unit; and a color sample member which is arrangeable at a position facing the image reading unit, such that the long paper is conveyed by the conveying member to avoid passing through between the image reading unit and the color sample member. Also included is a switch between a first arrangement in which the image reading unit reads the long paper and a second arrangement in which the image reading unit faces the long paper via the color sample member and reads the color sample member, the switch being made by moving the image reading unit or by moving the color sample member and the conveying member.

Abstract: An image forming apparatus comprises a conveying member configured to convey paper along a paper path, an image reading unit configured to read a surface of the paper conveyed by the conveying member along the paper path, and a color sample member. The conveying member, the image reading unit, and the color sample member have a first arrangement in which the image reading unit reads the surface of the paper conveyed by the conveying member along the paper path. The conveying member, the image reading unit, and the color sample member have a second arrangement in which the image reading unit reads the color sample member. The conveying member is configured to change the paper path in front of the image reading unit for switching from the first arrangement to the second arrangement.

Abstract: An image forming apparatus is provided, including a conveying member configured to convey a long paper along a paper path; an image forming unit which forms an image on the long paper being conveyed by the conveying member along the paper path; an image reading unit which reads a surface of the long paper, the surface having the image formed by the image forming unit; and a color sample member which is arrangeable at a position facing the image reading unit, such that the long paper is conveyed by the conveying member to avoid passing through between the image reading unit and the color sample member. Also included is a switch between a first arrangement in which the image reading unit reads the long paper and a second arrangement in which the image reading unit faces the long paper via the color sample member and reads the color sample member, the switch being made by moving the image reading unit or by moving the color sample member and the conveying member.

Abstract: An image forming apparatus comprises a conveying member configured to convey paper along a paper path, an image reading unit configured to read a surface of the paper conveyed by the conveying member along the paper path, and a color sample member. The conveying member, the image reading unit, and the color sample member have a first arrangement in which the image reading unit reads the surface of the paper conveyed by the conveying member along the paper path. The conveying member, the image reading unit, and the color sample member have a second arrangement in which the image reading unit reads the color sample member. The conveying member is configured to change the paper path in front of the image reading unit for switching from the first arrangement to the second arrangement.

Abstract: An image forming apparatus includes a conveying member, an image forming unit, an image reading unit, a background member and a color sample member. The image reading unit reads a surface of long paper being conveyed by the conveying member, the surface having an image formed by the image forming unit. The long paper is conveyed by the conveying member to pass through between the image reading unit and the background member and avoid passing through between the image reading unit and the color sample member. A switch between a first arrangement where the image reading unit faces the background member via the long paper and a second arrangement where the image reading unit faces the color sample member is made by moving the image reading unit or by moving the background member, the color sample member and the conveying member.

Abstract: An image forming apparatus includes: a conveying unit configured to convey a long paper sheet; an image forming unit configured to form an image on the long paper sheet, the image forming unit including a transferring unit configured to transfer toner onto the long paper sheet with a transfer belt; a fixing unit configured to fix the image onto the long paper sheet having the image formed thereon by the image forming unit; and a control unit configured to control a sheet feed path of the long paper sheet with respect to the transfer belt in accordance with state information about the long paper sheet, the long paper sheet being conveyed to the transferring unit by the conveying unit.

Abstract: An image forming apparatus of the present invention includes: an image forming unit for forming an image on a continuous paper; a fixing unit for fixing by heat the image which has been formed on the continuous paper by the image forming unit; conveyance units for conveying the continuous paper; and a control unit for controlling the conveyance units to convey the continuous paper in such a manner that, when an image forming operation by the image forming unit is stopped, the same portion of the continuous paper, on which the image is not formed, does not remain in the fixing unit for a predetermined period of time.

Abstract: An image forming apparatus includes a conveying member, an image forming unit, an image reading unit, a background member and a color sample member. The image reading unit reads a surface of long paper being conveyed by the conveying member, the surface having an image formed by the image forming unit. The long paper is conveyed by the conveying member to pass through between the image reading unit and the background member and avoid passing through between the image reading unit and the color sample member. A switch between a first arrangement where the image reading unit faces the background member via the long paper and a second arrangement where the image reading unit faces the color sample member is made by moving the image reading unit or by moving the background member, the color sample member and the conveying member.

Abstract: An image forming apparatus includes: a conveying unit configured to convey a long paper sheet; an image forming unit configured to form an image on the long paper sheet, the image forming unit including a transferring unit configured to transfer toner onto the long paper sheet with a transfer belt; a fixing unit configured to fix the image onto the long paper sheet having the image formed thereon by the image forming unit; and a control unit configured to control a sheet feed path of the long paper sheet with respect to the transfer belt in accordance with state information about the long paper sheet, the long paper sheet being conveyed to the transferring unit by the conveying unit.

Abstract: An image forming apparatus includes: a conveyance section configured to convey a sheet along a sheet feeding path; an image forming section configured to transfer and fix a toner image on a sheet conveyed by the conveyance section to form an image; and a plurality of cutting sections configured to cut a sheet that is conveyed through the sheet feeding path in a sheet width direction.

Abstract: An image forming apparatus includes: a sheet feeding section configured to feed a roll sheet; a sheet feeding path along which a roll sheet is conveyed; an image forming section configured to transfer a toner image to a roll sheet; a fixing section configured to fix the toner image by applying heat and pressure to a roll sheet on which the toner image is transferred at a fixing nip; a winding section configured to wind up a roll sheet; a guide member disposed along the sheet feeding path on both sides in a sheet width direction and on a downstream side of the fixing nip in a sheet conveyance direction; and a guide adjusting section configured to adjust a guide width of the guide member in accordance with an amount of shrinkage or an amount of expansion of a roll sheet passed through the fixing nip.

Abstract: An image forming apparatus includes: a sheet feeding section configured to feed a roll sheet; a sheet feeding path along which a roll sheet is conveyed; an image forming section configured to transfer a toner image to a roll sheet; a fixing section configured to fix the toner image by applying heat and pressure to a roll sheet on which the toner image is transferred at a fixing nip; a winding section configured to wind up a roll sheet; a guide member disposed along the sheet feeding path on both sides in a sheet width direction and on a downstream side of the fixing nip in a sheet conveyance direction; and a guide adjusting section configured to adjust a guide width of the guide member in accordance with an amount of shrinkage or an amount of expansion of a roll sheet passed through the fixing nip.

Abstract: An image forming apparatus includes a sheet conveyance section capable of conveying a long sheet; an electrophotographic image forming section; and a control section configured to control a toner refreshing operation. The toner refreshing operation includes a first toner refreshing operation and a second toner refreshing operation. In the first toner refreshing operation, an ejection toner image is formed on the image bearing member and removed by a cleaning section for the image bearing member, and in the second toner refreshing operation, an ejection toner image is formed on the image bearing member and the ejection toner image thus formed is transferred and fixed to the long sheet conveyed by the sheet conveyance section. When the toner refreshing operation is required, the control section executes the first toner refreshing operation or the second toner refreshing operation during an interval between jobs.

Abstract: An image forming apparatus includes a sheet conveyance section configured to convey a long sheet; an image forming section configured to transfer a toner image to a long sheet; and a fixing section configured to apply heat and pressure to a long sheet conveyed along a sheet feeding path at a fixing nip so as to fix a toner image. During cooling-down or warming-up of the fixing section, the sheet conveyance section performs conveyance of a long sheet when the a fixing temperature of the fixing side member is higher than a predetermined idling temperature, and stops conveyance of a long sheet when the fixing temperature of the fixing side member is lower than the predetermined idling temperature.

Abstract: An image forming apparatus includes a sheet conveyance section capable of conveying a long sheet; an electrophotographic image forming section; and a control section configured to control a toner refreshing operation. The toner refreshing operation includes a first toner refreshing operation and a second toner refreshing operation. In the first toner refreshing operation, an ejection toner image is formed on the image bearing member and removed by a cleaning section for the image bearing member, and in the second toner refreshing operation, an ejection toner image is formed on the image bearing member and the ejection toner image thus formed is transferred and fixed to the long sheet conveyed by the sheet conveyance section. When the toner refreshing operation is required, the control section executes the first toner refreshing operation or the second toner refreshing operation during an interval between jobs.

Abstract: An image forming apparatus includes: a sheet conveyance section; an image forming section; a fixing section; a driving section configured to rotate a back side supporting member; a pressure contact separation section; and a cooling section configured to cool down the back side supporting member. The sheet feeding path has a configuration in which a long sheet makes contact with the back side supporting member when the fixing side member and the back side supporting member are separated from each other. During cooling-down or warming-up of the fixing section, the pressure contact separation section separates the fixing side member and the back side supporting member from each other, the cooling section cools down the back side supporting member, and the driving section rotates the back side supporting member.

Abstract: An image forming apparatus includes: a conveyance section configured to convey a sheet along a sheet feeding path; an image forming section configured to transfer and fix a toner image on a sheet conveyed by the conveyance section to form an image; and a plurality of cutting sections configured to cut a sheet that is conveyed through the sheet feeding path in a sheet width direction.

Abstract: An image forming apparatus includes a paper feed unit, an image forming unit, a fixing unit, a conveyance unit, a control unit, a movement unit and an actuator. The fixing unit includes sandwiching members between which paper is sandwiched. The paper has a toner image thereon formed by the image forming unit. The sandwiching members form a nip part, and the fixing unit fixes the toner image to the paper at the nip part. When an execution condition is satisfied, the control unit performs first control under which the actuator releases a sandwiching pressure made by the sandwiching members and thereafter the movement unit moves the sandwiching members along a paper width direction which is at right angles to a conveyance direction of the paper.

Abstract: An image forming apparatus includes: a sheet feeding section configured to feed a roll sheet; a sheet feeding path along which a roll sheet is conveyed; an image forming section configured to transfer a toner image to a roll sheet; a fixing section configured to fix the toner image by applying heat and pressure to a roll sheet on which the toner image is transferred at a fixing nip; a winding section configured to wind up a roll sheet; a guide member disposed along the sheet feeding path on both sides in a sheet width direction and on a downstream side of the fixing nip in a sheet conveyance direction; and a guide adjusting section configured to adjust a guide width of the guide member in accordance with an amount of shrinkage or an amount of expansion of a roll sheet passed through the fixing nip.