Abstract: An image forming apparatus of the present invention includes a circuit including both a circuit within a fixing unit and a power control circuit, provided with a first circuit which supplies power to a heater from an AC power supply, a second circuit electrically insulated from the first circuit, and a third circuit electrically insulated from both the first circuit and the second circuit, all of the first to third circuits are provided on at least one surface of a circuit board, and the first to third circuits are disposed on at least one straight line on which all of the first to third circuits are present on the one surface of the circuit board in the order of the first circuit, the third circuit and the second circuit.

Abstract: An image forming apparatus of the present invention includes a circuit including both a circuit within a fixing unit and a power control circuit, provided with a first circuit which supplies power to a heater from an AC power supply, a second circuit electrically insulated from the first circuit, and a third circuit electrically insulated from both the first circuit and the second circuit, all of the first to third circuits are provided on at least one surface of a circuit board, and the first to third circuits are disposed on at least one straight line on which all of the first to third circuits are present on the one surface of the circuit board in the order of the first circuit, the third circuit and the second circuit.

Abstract: A heater for an image heating device includes a substrate having first and second surfaces, a heat generating element electrically connected to a first electrode group, both formed on the first surface, a temperature detection element electrically connected to a second electrode group, both formed on the second surface. A plurality of first feed terminals provided in the image heating device in contact with the first electrode group. A plurality of second feed terminals provided in the image heating device in contact with the second electrode group. The first and second electrode groups are disposed on the same side of a midpoint of the substrate in a longitudinal direction. The second electrode group is disposed closer to the midpoint than the first electrode group in the longitudinal direction. The first and second electrode groups are disposed with a gap between the first and second electrode groups in the longitudinal direction.

Abstract: An image forming apparatus of the present invention includes a circuit including both a circuit within a fixing unit and a power control circuit, provided with a first circuit which supplies power to a heater from an AC power supply, a second circuit electrically insulated from the first circuit, and a third circuit electrically insulated from both the first circuit and the second circuit, all of the first to third circuits are provided on at least one surface of a circuit board, and the first to third circuits are disposed on at least one straight line on which all of the first to third circuits are present on the one surface of the circuit board in the order of the first circuit, the third circuit and the second circuit.

Abstract: An image forming apparatus of the present invention includes a circuit including both a circuit within a fixing unit and a power control circuit, provided with a first circuit which supplies power to a heater from an AC power supply, a second circuit electrically insulated from the first circuit, and a third circuit electrically insulated from both the first circuit and the second circuit, all of the first to third circuits are provided on at least one surface of a circuit board, and the first to third circuits are disposed on at least one straight line on which all of the first to third circuits are present on the one surface of the circuit board in the order of the first circuit, the third circuit and the second circuit.

Abstract: An image forming apparatus of the present invention includes a circuit including both a circuit within a fixing unit and a power control circuit, provided with a first circuit which supplies power to a heater from an AC power supply, a second circuit electrically insulated from the first circuit, and a third circuit electrically insulated from both the first circuit and the second circuit, all of the first to third circuits are provided on at least one surface of a circuit board, and the first to third circuits are disposed on at least one straight line on which all of the first to third circuits are present on the one surface of the circuit board in the order of the first circuit, the third circuit and the second circuit.

Abstract: An image forming apparatus of the present invention includes a circuit including both a circuit within a fixing unit and a power control circuit, provided with a first circuit which supplies power to a heater from an AC power supply, a second circuit electrically insulated from the first circuit, and a third circuit electrically insulated from both the first circuit and the second circuit, all of the first to third circuits are provided on at least one surface of a circuit board, and the first to third circuits are disposed on at least one straight line on which all of the first to third circuits are present on the one surface of the circuit board in the order of the first circuit, the third circuit and the second circuit.

Abstract: An image forming apparatus of the present invention includes a circuit including both a circuit within a fixing unit and a power control circuit, provided with a first circuit which supplies power to a heater from an AC power supply, a second circuit electrically insulated from the first circuit, and a third circuit electrically insulated from both the first circuit and the second circuit, all of the first to third circuits are provided on at least one surface of a circuit board, and the first to third circuits are disposed on at least one straight line on which all of the first to third circuits are present on the one surface of the circuit board in the order of the first circuit, the third circuit and the second circuit.

Abstract: The disclosure provides a compact fixing device with reduced cost of wiring including electrical cables. In the fixing device, first and second wire guide members that seal a part of wires electrically connected to terminals of a temperature detection element and a part of wires electrically connected to terminals of a safety element are disposed in the internal space of a fixing film.

Abstract: The disclosure provides a compact fixing device with reduced cost of wiring including electrical cables. In the fixing device, first and second wire guide members that seal a part of wires electrically connected to terminals of a temperature detection element and a part of wires electrically connected to terminals of a safety element are disposed in the internal space of a fixing film.

Abstract: The present invention relates to an image fixing apparatus including a fan for cooling one end region of the image fixing apparatus and a fan for cooling another end region thereof. When a temperature of the one end region reaches a cooling starting temperature, a fan corresponding to the one end portion is driven at a first rotation speed, and another fan is driven at a second rotation speed lower than the first rotation speed even if the temperature of the other end region is lower than the cooling starting temperature so as to protect the fans from thermal damages.

Abstract: A sheet interval, serving as the distance between conveyed recording materials, is properly controlled based on a kind of a recording material and any one of a printing ratio, an adhesion amount of toner, and the presence or absence of graphic data, thus allowing printing at throughput suitable for, for example, the kind of the recording material and the printing ratio without changing an image forming condition such that image quality does not vary.

Abstract: The present invention relates to an image fixing apparatus including a fan for cooling one end region of the image fixing apparatus and a fan for cooling another end region thereof. When a temperature of the one end region reaches a cooling starting temperature, a fan corresponding to the one end portion is driven at a first rotation speed, and another fan is driven at a second rotation speed lower than the first rotation speed even if the temperature of the other end region is lower than the cooling starting temperature so as to protect the fans from thermal damages.

Abstract: The present invention relates to an image fixing apparatus including a fan for cooling one end region of the image fixing apparatus and a fan for cooling another end region thereof. When a temperature of the one end region reaches a cooling starting temperature, a fan corresponding to the one end portion is driven at a first rotation speed, and another fan is driven at a second rotation speed lower than the first rotation speed even if the temperature of the other end region is lower than the cooling starting temperature so as to protect the fans from thermal damages.

Abstract: The present invention relates to an image fixing apparatus including a fan for cooling one end region of the image fixing apparatus and a fan for cooling another end region thereof. When a temperature of the one end region reaches a cooling starting temperature, a fan corresponding to the one end portion is driven at a first rotation speed, and another fan is driven at a second rotation speed lower than the first rotation speed even if the temperature of the other end region is lower than the cooling starting temperature so as to protect the fans from thermal damages.

Abstract: A sheet interval, serving as the distance between conveyed recording materials, is properly controlled based on a kind of a recording material and any one of a printing ratio, an adhesion amount of toner, and the presence or absence of graphic data, thus allowing printing at throughput suitable for, for example, the kind of the recording material and the printing ratio without changing an image forming condition such that image quality does not vary.