Abstract: An image reading device includes: a scanner configured to read an image formed on a sheet of paper; a first background member configured to reflect light emitted from the scanner; a colorimeter configured to take a color measurement of the image; a second background member configured to reflect light emitted from the colorimeter; a guide member configured to guide the sheet of paper passing between the colorimeter and the second background member; and a regulating member configured to regulate movement of the sheet of paper, wherein the regulating member includes: a first member including a rolling member; a second member including a rolling member; and a pressing member configured to press the first member and the second member against the guide member, and the pressing member is disposed in a position offset from axes of the first member and the second member.

Abstract: An image reading apparatus includes: a light emission section including a light emitting element, and a light guiding member configured to irradiate a sheet with light emitted from the light emitting element; a reading section configured to read an image formed on the sheet; a heat dissipation section configured to dissipate heat of the light emitting element; and a cooling section configured to cool the heat dissipation section, in which the light emitting element and the heat dissipation section are disposed at positions outside a sheet passing region of the sheet in the width direction.

Abstract: An image reading apparatus capable of detecting correct color tones of an image printed on a sheet is described. The image reading apparatus includes a scanner 100, a colorimeter 103, a cooling device 145, a temperature control unit 111, and an image correction unit 113. While an image correction process is not performed, the temperature control unit 111 controls the cooling temperature to a first temperature for shifting the cooling device 145 to a predetermined cooled state. While the image correction process is performed, the temperature control unit 111 controls the cooling temperature to a second temperature for making the temperature of the sheet uniform. The image correction unit 113 obtains, while the temperature control unit 111 controls the cooling temperature to the second temperature, the correction amount of the image based on the colorimetric measurement result of the colorimeter 103 and the reading result of the scanner 100.

Abstract: An image reading apparatus includes a scanner structured to reads an image formed on a medium which is conveyed; a calibration member located opposite to the scanner and structured to reflect irradiation light to be radiated to the medium when reading an image; a first roller arranged in a fixed position and structured to guide a conveying direction of the medium passing between the scanner and the calibration member; and a second roller arranged in a variable position in accordance with the stiffness of the medium and structured to guide the conveying direction of the medium passing between the scanner and the calibration member.

Abstract: An image reading device includes: a scanner configured to read an image formed on a sheet of paper; a first background member configured to reflect light emitted from the scanner; a colorimeter configured to take a color measurement of the image; a second background member configured to reflect light emitted from the colorimeter; a guide member configured to guide the sheet of paper passing between the colorimeter and the second background member; and a regulating member configured to regulate movement of the sheet of paper, wherein the regulating member includes: a first member including a rolling member; a second member including a rolling member; and a pressing member configured to press the first member and the second member against the guide member, and the pressing member is disposed in a position offset from axes of the first member and the second member.

Abstract: An image reading apparatus includes a scanner structured to reads an image formed on a medium which is conveyed; a calibration member located opposite to the scanner and structured to reflect irradiation light to be radiated to the medium when reading an image; a first roller arranged in a fixed position and structured to guide a conveying direction of the medium passing between the scanner and the calibration member; and a second roller arranged in a variable position in accordance with the stiffness of the medium and structured to guide the conveying direction of the medium passing between the scanner and the calibration member.

Abstract: An image forming system that includes an image forming apparatus which forms a predetermined identification mark on a recording medium and a reading apparatus which reads the identification mark formed on the recording medium, the image forming system including: a color information acquisition unit which acquires color information indicating a color of the recording medium; an identification mark color setting unit which sets a color of the identification mark to be formed on the recording medium by the image forming apparatus to a color distinguishable by the reading apparatus from the color indicated by the color information that is acquired by the color information acquisition unit; and an image forming control unit which controls the image forming apparatus to form the identification mark in the color set by the identification mark color setting unit on the recording medium.

Abstract: An image reading apparatus includes: a light emission section including a light emitting element, and a light guiding member configured to irradiate a sheet with light emitted from the light emitting element; a reading section configured to read an image formed on the sheet; a heat dissipation section configured to dissipate heat of the light emitting element; and a cooling section configured to cool the heat dissipation section, in which the light emitting element and the heat dissipation section are disposed at positions outside a sheet passing region of the sheet in the width direction.

Abstract: A fixing device and An image forming apparatus include: a first pressure roller having an elastic layer in a surface layer section; a fixing belt wound on the elastic layer of the first pressure roller; a second pressure roller that presses the elastic layer of the first pressure roller via the fixing belt, the second pressure roller forming a fixing nip portion between the fixing belt and the second pressure roller; and a guide member that guides the fixing belt in such a manner as to separate the fixing belt from a protruding portion of the elastic layer, the protruding portion being formed on an entrance side of the fixing nip portion in a sheet conveying direction.

Abstract: An image reading apparatus capable of detecting correct color tones of an image printed on a sheet is described. The image reading apparatus includes a scanner 100, a colorimeter 103, a cooling device 145, a temperature control unit 111, and an image correction unit 113. While an image correction process is not performed, the temperature control unit 111 controls the cooling temperature to a first temperature for shifting the cooling device 145 to a predetermined cooled state. While the image correction process is performed, the temperature control unit 111 controls the cooling temperature to a second temperature for making the temperature of the sheet uniform. The image correction unit 113 obtains, while the temperature control unit 111 controls the cooling temperature to the second temperature, the correction amount of the image based on the colorimetric measurement result of the colorimeter 103 and the reading result of the scanner 100.

Abstract: An image forming system that includes an image forming apparatus which forms a predetermined identification mark on a recording medium and a reading apparatus which reads the identification mark formed on the recording medium, the image forming system including: a color information acquisition unit which acquires color information indicating a color of the recording medium; an identification mark color setting unit which sets a color of the identification mark to be formed on the recording medium by the image forming apparatus to a color distinguishable by the reading apparatus from the color indicated by the color information that is acquired by the color information acquisition unit; and an image forming control unit which controls the image forming apparatus to form the identification mark in the color set by the identification mark color setting unit on the recording medium.

Abstract: An image forming apparatus includes: a toner supply section that supplies toner to a plurality of developing sections; a carrier supply section that supplies carrier to the plurality of developing sections; and a control section that controls an operation of the carrier supply section. The carrier supply section includes: a carrier housing section; a carrier distributing section that receives a predetermined amount of carrier that has freely fallen from the carrier housing section and guides the predetermined amount of carrier to each of the plurality of developing sections; a support frame section that slidably supports the carrier distributing section; and a vibration exciter section that vibrates the carrier distributing section.

Abstract: A fixing device and An image forming apparatus include: a first pressure roller having an elastic layer in a surface layer section; a fixing belt wound on the elastic layer of the first pressure roller; a second pressure roller that presses the elastic layer of the first pressure roller via the fixing belt, the second pressure roller forming a fixing nip portion between the fixing belt and the second pressure roller; and a guide member that guides the fixing belt in such a manner as to separate the fixing belt from a protruding portion of the elastic layer, the protruding portion being formed on an entrance side of the fixing nip portion in a sheet conveying direction.

Abstract: An image forming apparatus includes: a toner supply section that supplies toner to a plurality of developing sections; a carrier supply section that supplies carrier to the plurality of developing sections; and a control section that controls an operation of the carrier supply section. The carrier supply section includes: a carrier housing section; a carrier distributing section that receives a predetermined amount of carrier that has freely fallen from the carrier housing section and guides the predetermined amount of carrier to each of the plurality of developing sections; a support frame section that slidably supports the carrier distributing section; and a vibration exciter section that vibrates the carrier distributing section.