摘要:
An image forming apparatus which is capable of correctly and accurately detecting a sheet leading edge position and carrying out image formation in appropriate image write timing, includes a detection device disposed at a reference position upstream from the transfer position and detects the recording medium being conveyed. A determining device determines image write timing for forming the electrostatic latent image on the photosensitive drum based on a difference in position between a leading edge position of the recording medium detected by said detection device and the reference position. The detection device respectively include a plurality of light detecting pixels disposed in a recording medium conveying direction, and the leading edge position of the recording medium detected by the respective light detecting pixels.
摘要:
An image forming apparatus, which is capable of correctly and accurately detecting a sheet leading edge position and carrying out image formation in appropriate image write timing, includes a detection device disposed at a reference position upstream from the transfer position and detects the recording medium being conveyed. A determining device determines image write timing for forming the electrostatic latent image on the photosensitive drum based on a difference in position between a leading edge position of the recording medium detected by said detection device and the reference position. The detection device respectively include a plurality of light detecting pixels disposed in a recording medium conveying direction, and the leading edge position of the recording medium detected by the respective light detecting pixels.
摘要:
A heating apparatus has a magnetic flux generator and a rotatable induction heating element for generating heat through electromagnetic induction by the action of magnetic flux generated by the magnetic flux generator, and heats a material to be heated by causing the material to be heated to contact the induction heating element. The heating apparatus further includes a thermistor for detecting a surface temperature of the induction heating element, power supply circuits for controlling power to be supplied to the magnetic flux generator on the basis of signals from the temperature detection, a Curie temperature reaching detector for detecting that the temperature of the induction heating element reaches the Curie temperature, and control circuits for detecting that the material to be heated is wound around the induction heating element on the basis of signals from the thermistor and the Curie temperature reaching detector.
摘要:
A heating apparatus has a magnetic flux generator and a rotatable induction heating element for generating heat through electromagnetic induction by the action of magnetic flux generated by the magnetic flux generator, and heats a material to be heated by causing the material to be heated to contact the induction heating element. The heating apparatus further includes a thermistor for detecting a surface temperature of the induction heating element, power supply circuits for controlling power to be supplied to the magnetic flux generator on the basis of signals from the temperature detection, a Curie temperature reaching detector for detecting that the temperature of the induction heating element reaches the Curie temperature, and control circuits for detecting that the material to be heated is wound around the induction heating element on the basis of signals from the thermistor and the Curie temperature reaching detector.
摘要:
An image taking apparatus consisting of a main unit capable of image recording in at least one of a first recording mode in which an object image is focused by a focusing system onto an image reading device is photoelectrically read and a second recording mode in which the object image is focused by a focusing system onto a recording medium for image recording, and a sub unit detachably attachable to the main unit is used for the recording in the second recording mode, and, when it is attached to the main unit, it receives the light image of the object image from the main unit and executes recording in the second recording mode.
摘要:
An image forming apparatus that is capable of preventing an abnormal operation due to a voltage drop of a commercial power source and continuing an image forming operation efficiently even if the voltage drop occurs. A fixing unit fixes a toner image transferred onto a sheet. A voltage detection unit detects an input voltage of the commercial power source. A setting unit sets a fixing electric power supplied to the fixing unit from the commercial power source. A control unit suspends an operation when the set fixing electric power is less than a predetermined electric power and when the input voltage is less than a first voltage, and to continue the operation while reducing the set fixing electric power when the set fixing electric power is not less than the predetermined electric power and when the input voltage is less than a second voltage.
摘要:
An image forming apparatus which is capable of correctly and accurately detecting a sheet leading edge position and carrying out image formation in appropriate image write timing. a detection device is disposed at a reference position upstream from the transfer position and detects the recording medium being conveyed. A determining device determines image write timing for forming the electrostatic latent image on the photosensitive drum based on a difference in position between a leading edge position of the recording medium detected by the detection device and the reference position. The detection device respectively include a plurality of light detecting pixels disposed in a recording medium conveying direction, and the leading edge position of the recording medium detected by the respective light detecting pixels.
摘要:
An image forming apparatus forms an image by laser beams from a plurality of lasers. The image forming apparatus includes a light amount control circuit that detects displacement in a sub-scanning direction of the main scanning line of a laser beam from the predetermined laser, from a reference position. The apparatus decides an allotted amount of light for each of the plurality of lasers in accordance with the detected displacement and controls to drive each of the plurality of lasers in accordance with the decided allotted amount of light for each laser.
摘要:
An image forming apparatus forms an image by laser beams from a plurality of lasers. The image forming apparatus includes a light amount control circuit that detects displacement in a sub-scanning direction of the main scanning line of a laser beam from the predetermined laser, from a reference position. The apparatus decides an allotted amount of light for each of the plurality of lasers in accordance with the detected displacement and controls to drive each of the plurality of lasers in accordance with the decided allotted amount of light for each laser.
摘要:
A heating apparatus, for heating a material P to be heated by heat from a heat generation member which has a predetermined curie temperature characteristic and generates heat by magnetic flux produced by a magnetic flux generation device. The apparatus includes a discrimination device for discriminating whether or not the curie temperature characteristic of the heat generation member is a predetermined characteristic and a control device for terminating the supply of electric power to the magnetic flux generation device when the discrimination device determines that the curie temperature characteristic is not the predetermined characteristic.