Abstract: An information processing apparatus executes processing of making sizes of a plurality of pieces of data the same by adding dummy data to data other than data having a maximum size among the plurality of pieces of data, generates parity data based on the plurality of pieces of data to which the dummy data is added, and selects the magnetic tapes as recording destinations of the plurality of pieces of data and the parity data from the plurality of magnetic tapes such that a difference in a size of at least one of the dummy data or the parity data to be recorded on each of the plurality of magnetic tapes is minimized.

Abstract: An information processing apparatus reads definition information that is common to a plurality of magnetic tapes and defines a plurality of pieces of data included in archive data, generates the same number of pieces of the archive data as the number of the magnetic tapes based on the definition information, the archive data being obtained by grouping the plurality of pieces of data, and performs control of recording the plurality of pieces of generated archive data on the plurality of magnetic tapes in one-to-one correspondence.

Abstract: A vehicle exterior part is configured to be arranged frontward of a millimeter wave radar device with respect to the transmission direction of millimeter waves. The vehicle exterior part includes an ornamental body, a light source that emits light, and a light diffuse reflection member. The light diffuse reflection member is millimeter wave-transmissive and diffuses and reflects light. The ornamental body includes a base and an ornamental layer. The base is millimeter wave-transmissive and diffuses and transmits the light. The ornamental layer is millimeter wave-transmissive and arranged frontward of the base with respect to the transmission direction. The light source, the ornamental body, and the light diffuse reflection member are arranged so that the light emitted from the light source is diffused and reflected by the light diffuse reflection member and directed toward the base.

Abstract: An image forming apparatus may include a pressurization member rotated by a motor in a direction of transportation in the fixing apparatus, of the recording material downstream in a transportation path, a fixing belt that forms, as being opposed to the pressurization member, a nip region where an unfixed image is fixed, the fixing belt being rotated as following rotation of the pressurization member, a support member that is arranged on an inner side of the fixing belt and slidably supports the fixing belt at a position opposed to the pressurization member against a pressure applied by the pressurization member, and a control unit that obtains torque at the time when the motor is driven each time a predetermined condition is satisfied, and determines that the fixing apparatus has reached the end of its life based on variation over time in obtained torque turning from increase to decrease.

Abstract: A fixing device including: a heating rotating body; a pressure member pressed against the heating rotating body to form a nip; a first acquisition unit that acquires a first index value indicating a change in coefficient of friction between the heating rotating body and the pressure member; a second acquisition unit that acquires a second index value indicating a change in rigidity of an elastic layer in the heating rotating body and/or the pressure member; and a controller that executes at least one of two controls according to the index values: a first control during idling rotation after fixing job execution, for controlling temperature of the heating rotating body and time from a start of the idling rotation to an end of the idling rotation and a second control during idling rotation before and/or after fixing job execution, for controlling rotation speed of the heating rotating body.

Abstract: A fixing device including: a heating rotating body; a pressure member pressed against the heating rotating body to form a nip; a first acquisition unit that acquires a first index value indicating a change in coefficient of friction between the heating rotating body and the pressure member; a second acquisition unit that acquires a second index value indicating a change in rigidity of an elastic layer in the heating rotating body and/or the pressure member; and a controller that executes at least one of two controls according to the index values: a first control during idling rotation after fixing job execution, for controlling temperature of the heating rotating body and time from a start of the idling rotation to an end of the idling rotation and a second control during idling rotation before and/or after fixing job execution, for controlling rotation speed of the heating rotating body.

Abstract: An image forming apparatus may include a pressurization member rotated by a motor in a direction of transportation in the fixing apparatus, of the recording material downstream in a transportation path, a fixing belt that forms, as being opposed to the pressurization member, a nip region where an unfixed image is fixed, the fixing belt being rotated as following rotation of the pressurization member, a support member that is arranged on an inner side of the fixing belt and slidably supports the fixing belt at a position opposed to the pressurization member against a pressure applied by the pressurization member, and a control unit that obtains torque at the time when the motor is driven each time a predetermined condition is satisfied, and determines that the fixing apparatus has reached the end of its life based on variation over time in obtained torque turning from increase to decrease.

Abstract: An image forming apparatus includes: a fixing device having: a heating member having a heat source; a pressing member; and a fixing member heated by the heating member and forming a nip portion passing through a recording material together with the pressing member; and a hardware processor that: estimates a temperature of the fixing member based on a temperature of the heating member; and estimates a durability state of the fixing member according to the temperature of the fixing member estimated.

Abstract: An image forming apparatus includes: a fixing device having: a heating member having a heat source; a pressing member; and a fixing member heated by the heating member and forming a nip portion passing through a recording material together with the pressing member; and a hardware processor that: estimates a temperature of the fixing member based on a temperature of the heating member; and estimates a durability state of the fixing member according to the temperature of the fixing member estimated.

Abstract: An image forming apparatus has an operating state and a non-operating state with power consumption smaller than in the operating state. The image forming apparatus includes: a fixing device for thermally fixing a toner image on a print material; an execution unit for executing warm-up to heat the fixing device up to a printable temperature for fixing the toner image on the print material, upon power-on or in shifting from the non-operating state to the operating state; and a temperature control unit for maintaining a waiting state to keep the fixing device at the printable temperature or higher, after completion of warm-up or printing. The temperature control unit increases the temperature of the fixing device higher in a waiting state after printing a predetermined number of times since power-on or in a waiting state after the non-operating state for a predetermined time or longer, than in any other waiting state.

Abstract: An image forming apparatus has an operating state and a non-operating state with power consumption smaller than in the operating state. The image forming apparatus includes a fixing device for fixing a toner image on a print material by heat, a fan for discharging heat from the image forming apparatus, and a control unit for controlling operation of the fan. When a non-operating time from shifting to the non-operating state to shifting to the operating state is shorter than a predetermined time, the control unit allows the fan to operate with predetermined power in the operating state. When the non-operating time is equal to or longer than the predetermined time, the control unit stops the fan or allows the fan to operate with power smaller than the predetermined power in the operating state.

Abstract: An image formation apparatus includes: a fixer that fixes a toner image onto a sheet by heat and pressure, and includes: a heat source; a first rotary member that is heated by the heat source; a temperature sensing unit that senses a temperature of the first rotary member; and a second rotary member that forms a nip with the first rotary member for applying heat and pressure to the sheet; and a controller that calculates a nip width of the nip in a passing direction of the sheet with use of a rotation period and a rest period of the first rotary member during which the heat source operates, and changes a target temperature of the first rotary member in accordance with the calculated nip width.

Abstract: An image forming apparatus has an operating state and a non-operating state with power consumption smaller than in the operating state. The image forming apparatus includes: a fixing device for thermally fixing a toner image on a print material; an execution unit for executing warm-up to heat the fixing device up to a printable temperature for fixing the toner image on the print material, upon power-on or in shifting from the non-operating state to the operating state; and a temperature control unit for maintaining a waiting state to keep the fixing device at the printable temperature or higher, after completion of warm-up or printing. The temperature control unit increases the temperature of the fixing device higher in a waiting state after printing a predetermined number of times since power-on or in a waiting state after the non-operating state for a predetermined time or longer, than in any other waiting state.

Abstract: An image forming apparatus has an operating state and a non-operating state with power consumption smaller than in the operating state. The image forming apparatus includes a fixing device for fixing a toner image on a print material by heat, a fan for discharging heat from the image forming apparatus, and a control unit for controlling operation of the fan. When a non-operating time from shifting to the non-operating state to shifting to the operating state is shorter than a predetermined time, the control unit allows the fan to operate with predetermined power in the operating state. When the non-operating time is equal to or longer than the predetermined time, the control unit stops the fan or allows the fan to operate with power smaller than the predetermined power in the operating state.

Abstract: An image formation apparatus includes: a fixer that fixes a toner image onto a sheet by heat and pressure, and includes: a heat source; a first rotary member that is heated by the heat source; a temperature sensing unit that senses a temperature of the first rotary member; and a second rotary member that forms a nip with the first rotary member for applying heat and pressure to the sheet; and a controller that calculates a nip width of the nip in a passing direction of the sheet with use of a rotation period and a rest period of the first rotary member during which the heat source operates, and changes a target temperature of the first rotary member in accordance with the calculated nip width.

Abstract: An image forming apparatus has a fusing unit including a first rotor provided with a heat-generating unit and an elastic layer, as well as a second rotor provided in direct contact with the first rotor, the fusing unit fixing a toner image on a sheet, and a duct for allowing an inlet and an exhaust outlet to communicate with each other, the inlet being adapted to allow a current of air derived from the fusing unit to flow in, the exhaust outlet facing toward the outside of the apparatus. The duct includes an introduction channel for guiding and jetting out air taken in from the inlet, a main channel for guiding the air jetted out of the introduction channel to the exhaust outlet, and a cul-de-sac provided in communication with the main channel at one end and closed at the other end.

Abstract: A fixing unit includes a first heat source configured to heat a roller, and a second heat source configured to heat the roller. The maximum value of a total amount of heat generated in the second heat source is smaller than that of the first heat source. The second heat source has an amount of heat generated higher in ends of the second heat source than in a center thereof in a distribution of the amount of heat generated in the axial direction. The second heat source has a rate of the amount of heat generated in the ends of the second heat source to that in the center thereof higher than a rate of the amount of heat generated in the ends of the first heat source to that in the center thereof.

Abstract: An image forming apparatus has a fusing unit including a first rotor provided with a heat-generating unit and an elastic layer, as well as a second rotor provided in direct contact with the first rotor, the fusing unit fixing a toner image on a sheet, and a duct for allowing an inlet and an exhaust outlet to communicate with each other, the inlet being adapted to allow a current of air derived from the fusing unit to flow in, the exhaust outlet facing toward the outside of the apparatus. The duct includes an introduction channel for guiding and jetting out air taken in from the inlet, a main channel for guiding the air jetted out of the introduction channel to the exhaust outlet, and a cul-de-sac provided in communication with the main channel at one end and closed at the other end.

Abstract: A fixing unit includes a first heat source configured to heat a roller, and a second heat source configured to heat the roller. The maximum value of a total amount of heat generated in the second heat source is smaller than that of the first heat source. The second heat source has an amount of heat generated higher in ends of the second heat source than in a center thereof in a distribution of the amount of heat generated in the axial direction. The second heat source has a rate of the amount of heat generated in the ends of the second heat source to that in the center thereof higher than a rate of the amount of heat generated in the ends of the first heat source to that in the center thereof.

Abstract: In a fixing apparatus, a first detection portion detects a temperature of an atmosphere (a first detected temperature) attained by heat conduction from a heating rotating member for fixing a toner image on a sheet of paper by heating, at a position above the heating rotating member. A second detection portion detects a quantity of infrared rays radiated from the heating rotating member, to thereby detect a temperature at a position below the heating rotating member. A heating portion heats the heating rotating member. A control portion controls heating by the heating portion based on a second detected temperature corresponding to the quantity of infrared rays and the first detected temperature.