Abstract: A power supply system connected to a motor unit of an electric vehicle, the power supply system includes: a fuel cell; a secondary battery; a voltage control unit; and a switch. The fuel cell is directly connected to the motor unit, the secondary battery is connected to the motor unit via the voltage control unit, and the switch is configured to switch between a first state in which the secondary battery and the voltage control unit are connected in parallel with the fuel cell and a second state in which the secondary battery and the voltage control unit are connected in series with the fuel cell.

Abstract: According to an embodiment, a heating device includes a cylindrical belt, a heater, a press roller, and a holder. The heater is disposed on an inner surface of the belt. The press roller rotates and is configured to contact an outer surface of the belt at a position opposite the heater to form a nip. The end portions of the press roller project by a first amount in a radial direction more than the central portion of the press roller. A holder has a first surface supporting the heater to face the cylindrical belt. The holder has a second surface that is opposite of the first surface with a center portion projecting in a direction orthogonal to the first surface more than the end portions of the second surface by a second projection amount that is greater than the first projection amount.

Abstract: According to an embodiment, a heating device includes a cylindrical belt, a heater, a press roller, and a holder. The heater is disposed on an inner surface of the belt. The press roller rotates and is configured to contact an outer surface of the belt at a position opposite the heater to form a nip. The end portions of the press roller project by a first amount in a radial direction more than the central portion of the press roller. A holder has a first surface supporting the heater to face the cylindrical belt. The holder has a second surface that is opposite of the first surface with a center portion projecting in a direction orthogonal to the first surface more than the end portions of the second surface by a second projection amount that is greater than the first projection amount.

Abstract: A fixing device includes a tubular body in a tubular shape that forms a nip with a pressurizing member. The heater, disposed inside the tubular body, faces a part of the tubular body in a circumferential direction. The heat equalizing member is disposed on an opposite side of a side where the heater faces the tubular body. The heat equalizing member transfers heat from a place having a high temperature to a place having a low temperature in a second direction along an axial direction of the tubular body. The heat conductive member, disposed between the heater and the heat equalizing member, can conduct the heat in each of the second direction and a first direction in which the heater and the heat equalizing member face each other. A side portion of the heat conductive member in the second direction is divided into three or more portions.

Abstract: A fixing device for an image forming apparatus has a tubular fixing member that has a lubricant-coated inner surface. A rotating member contacts an outer surface of the fixing member. A heater is on an inner surface side of the fixing member at a first position. A pressing member presses against the inner surface of the fixing member at a second position. The pressing member extends beyond the outer edges of the fixing member and includes first grooves in an outward facing surface that contacts the inner surface of fixing member. At least one first groove has end portion that extends beyond an outer edge of the fixing member, an inner portion inside the outer edges of the fixing member, and connecting portion connecting the two other portions. The connector portion is angled inward toward a center of the fixing member and crosses the outer edge of the fixing member.

Abstract: A power supply system connected to a motor unit of an electric vehicle, the power supply system includes: a fuel cell; a secondary battery; a voltage control unit; and a switch. The fuel cell is directly connected to the motor unit, the secondary battery is connected to the motor unit via the voltage control unit, and the switch is configured to switch between a first state in which the secondary battery and the voltage control unit are connected in parallel with the fuel cell and a second state in which the secondary battery and the voltage control unit are connected in series with the fuel cell.

Abstract: A power supply system 1 includes: first power lines (21p, 21n) to which a first battery (B1) is connected; second power lines (31p, 31n) to which a second battery (B2) is connected; a voltage converter (5) which converts voltage; a power converter which converts electric power; a management ECU (71) and converter ECU (73) which operates the voltage converter (5); a smoothing capacitor connected to the first power lines (21p, 21n); and a motor ECU (72) which executes system interruption processing of determining the existence of failure of the contactors (22m, 22s, 32m, 32s) based on a change in voltage of the smoothing capacitor. The management ECU (71) and converter ECU (73) operate the voltage converter (5) so that a state in which the static voltage of the first battery (B1) is higher by at least the determination potential difference than the static voltage of the second battery (B2).

Abstract: A fixing device for an image forming apparatus has a tubular fixing member that has a lubricant-coated inner surface. A rotating member contacts an outer surface of the fixing member. A heater is on an inner surface side of the fixing member at a first position. A pressing member presses against the inner surface of the fixing member at a second position. The pressing member extends beyond the outer edges of the fixing member and includes first grooves in an outward facing surface that contacts the inner surface of fixing member. At least one first groove has end portion that extends beyond an outer edge of the fixing member, an inner portion inside the outer edges of the fixing member, and connecting portion connecting the two other portions. The connector portion is angled inward toward a center of the fixing member and crosses the outer edge of the fixing member.

Abstract: According to an embodiment, a heating device includes a cylindrical belt, a heater, a press roller, and a holder. The heater is disposed on an inner surface of the belt. The press roller rotates and is configured to contact an outer surface of the belt at a position opposite the heater to form a nip. The end portions of the press roller project by a first amount in a radial direction more than the central portion of the press roller. A holder has a first surface supporting the heater to face the cylindrical belt. The holder has a second surface that is opposite of the first surface with a center portion projecting in a direction orthogonal to the first surface more than the end portions of the second surface by a second projection amount that is greater than the first projection amount.

Abstract: According to an embodiment, a fixing device includes rotating body that is rotatably supported, a heater that heats the rotating body, a pressing body that is pressed against the rotating body to form a nip through which print media passes to a media conveyance path, and a water vapor discharge passage downstream of the nip from rotating body. The water vapor discharge passage is separate and distinct from the media conveyance path. The fixing device may be used in image forming apparatuses and the like.

Abstract: A power supply device includes: a first power storage device; a second power storage device that outputs voltage higher than the output voltage of the first power storage device and is connected in series to the first power storage device; a voltage converter connected to the output terminal of the first power storage device to output converted voltage; a second load connected to the output terminal of the voltage converter; and a control unit that controls the voltage converter at fixed boost ratio such that the converted voltage is the sum of the output voltage of the first power storage device and output voltage of the second power storage device. The output terminal of the first power storage device is connected to the second power storage device. The output terminal of the second power storage device is connected to the output terminal of the voltage converter.

Abstract: A vehicle electric power supply apparatus includes: a first battery that supplies electric power to a first load that is driven at a first voltage and a second load that is driven at a second voltage which is lower than the first voltage; a second battery that supplies electric power to the second load and that has a lower output voltage than that of the first battery; a DC/DC converter that reduces a voltage value of the first battery and that supplies electric power to the second load; and a control part that controls a state of supplying electric power of the first battery to the second load by controlling an operation of the DC/DC converter based on a charging rate of the first battery and a charging rate of the second battery.

Abstract: According to an embodiment, a fixing device includes rotating body that is rotatably supported, a heater that heats the rotating body, a pressing body that is pressed against the rotating body to form a nip through which print media passes to a media conveyance path, and a water vapor discharge passage downstream of the nip from rotating body. The water vapor discharge passage is separate and distinct from the media conveyance path. The fixing device may be used in image forming apparatuses and the like.

Abstract: A power supply system 1 includes: first power lines (21p, 21n) to which a first battery (B1) is connected; second power lines (31p, 31n) to which a second battery (B2) is connected; a voltage converter (5) which converts voltage; a power converter which converts electric power; a management ECU (71) and converter ECU (73) which operates the voltage converter (5); a smoothing capacitor connected to the first power lines (21p, 21n); and a motor ECU (72) which executes system interruption processing of determining the existence of failure of the contactors (22m, 22s, 32m, 32s) based on a change in voltage of the smoothing capacitor. The management ECU (71) and converter ECU (73) operate the voltage converter (5) so that a state in which the static voltage of the first battery (B1) is higher by at least the determination potential difference than the static voltage of the second battery (B2).

Abstract: According to an embodiment, a fixing device includes rotating body that is rotatably supported, a heater that heats the rotating body, a pressing body that is pressed against the rotating body to form a nip through which print media passes to a media conveyance path, and a water vapor discharge passage downstream of the nip from rotating body. The water vapor discharge passage is separate and distinct from the media conveyance path. The fixing device may be used in image forming apparatuses and the like.

Abstract: A power supply device includes: a first power storage device; a second power storage device that outputs voltage higher than the output voltage of the first power storage device and is connected in series to the first power storage device; a voltage converter connected to the output terminal of the first power storage device to output converted voltage; a second load connected to the output terminal of the voltage converter; and a control unit that controls the voltage converter at fixed boost ratio such that the converted voltage is the sum of the output voltage of the first power storage device and output voltage of the second power storage device. The output terminal of the first power storage device is connected to the second power storage device. The output terminal of the second power storage device is connected to the output terminal of the voltage converter.

Abstract: A vehicle electric power supply apparatus includes: a first battery that supplies electric power to a first load that is driven at a first voltage and a second load that is driven at a second voltage which is lower than the first voltage; a second battery that supplies electric power to the second load and that has a lower output voltage than that of the first battery; a DC/DC converter that reduces a voltage value of the first battery and that supplies electric power to the second load; and a control part that controls a state of supplying electric power of the first battery to the second load by controlling an operation of the DC/DC converter based on a charging rate of the first battery and a charging rate of the second battery.

Abstract: A fixing device according to an embodiment includes a first rotator, a belt, and a second rotator. The belt forms a nip by abutting onto a surface of the first rotator. The second rotator is disposed to abut onto an inner circumferential surface of the belt. The second rotator presses the belt against the first rotator such that the dynamic frictional force between the inner circumferential surface of the belt and the second rotator becomes equal to or smaller than 0.98 N.

Abstract: A power supply device including a first power supply, a second power supply, a voltage control unit (VCU) stepping up a voltage from an input terminal to an output terminal, and an electronic control unit (ECU) is provided. The VCU includes an upper arm, a lower arm, a reactor having one end connected to the input terminal and the other end connected to a connection midpoint between the upper arm and the lower arm, and a current sensor acquiring a value of a current flowing in the reactor. At startup of the VCU, after performing a startup control that gradually increases a duty ratio of a transistor of the lower arm while turning off a transistor of the upper arm, the ECU performs a normal control that complementarily drives the transistors. During the startup control, the ECU determines whether to terminate the startup control using the acquired current value.

Abstract: According to one embodiment, a fuser includes a heat roller, an endless belt, a first press roller and a second press roller. The heat roller rotates and contacts a toner surface side of a sheet, and heats the sheet. The endless belt contacts a part of an outer peripheral surface of the heat roller. The first press roller contacts a part of an inner peripheral surface of the endless belt, and is provided at an insertion part of the sheet in a nip portion where the heat roller contacts the endless belt. The second press roller contacts a part of the inner peripheral surface of the endless belt, is provided at an exit part of the sheet in the nip portion, and has a lower rotational resistance than the first press roller.