Abstract: An apparatus has a detection unit, a rotating polygonal mirror and a generation unit. The rotating polygonal mirror has reflecting surfaces and configured to deflect light. The detection unit outputs a first signal in accordance with detecting the light. The generation unit, based on the first signal, generates a second signal which is a main scanning synchronization signal for controlling a write start in a main scanning direction. The second signal has a first waveform and a second waveform. The first waveform does not correspond to a reference reflection surface. The second waveform corresponds to the reference reflection surface and is different to the first waveform.

Abstract: A CPU is provided which controls a first light emission state in which a light source is controlled to emit a light beam to scan a full-scanning region and a second light emission state in which the light source is controlled to emit a light beam to scan a non-image region in a period from start of activation of a scanning motor to when the number of rotations of the scanning motor reaches a target number of rotations. The CPU acquires BD cycle values of BD signals generated by a main-scanning synchronization sensor, determines a second timing for changing from the first light emission state to the second light emission state on the basis of the two serial BD cycle values, and changes the semiconductor laser from the first light emission state to the second light emission state according to the second timing.

Abstract: An apparatus includes a calculation unit configured to calculate information about power using a first signal and a second signal, a first communication unit configured to transmit a calculation result of the calculation unit, and a second communication unit configured to receive a plurality of pieces of setting information stored in a storage unit, wherein the calculation apparatus is capable of switching calculation processing of the calculation unit based on the plurality of pieces of setting information received via the second communication unit.

Abstract: An image forming apparatus includes a fixing unit having a heater and fixing a toner image formed on a recording material onto this recording material. The heater includes a first heat-generating member and a second heat-generating member, a first driving element provided on a power supply path to the first heat-generating member; a second driving element provided on a power supply path to the second heat-generating member, a control unit controlling the first driving element and the second driving element respectively, first detection unit for detecting current flowing through the first heat-generating member, a second detection unit of detecting current flowing through the second heat-generating member, and a safety circuit receiving a first output of the first detection unit and a second output of the second detection unit.

Abstract: The image forming apparatus of the present invention includes a fixing unit of including a heater and fixing a toner image formed on a recording material onto this recording material, the heater including a first heat generating member and a second heat-generating member, a first driving element provided on a power supply path to the first heat-generating member; a second driving element provided on a power supply path to the second heat generating member, a control unit controlling the first driving element and the second driving element respectively, first detection unit for detecting current flowing through the first heat-generating member, a second detection unit of detecting current flowing through the second heat-generating member, and a safety circuit receiving a first output of the first detection unit and a second output of the second detection unit.

Abstract: In a switching power source, in a state where a second voltage smaller than a first voltage is output from an output unit by intermittently driving a switching unit, the switching unit changes a number of driving times of the switching unit for each driving cycle when the switching unit is intermittently driven.

Abstract: A controller determines a state of a switch unit based on a potential difference between a power supply side and a load side of the switch unit. Alternatively, when an electronic device is in a first operating state, the controller determines a state of the switch based on a result of a first detection unit. When the electronic device is in a second operating state that a power consumption of the device is lower than that in the first operating state, the controller determines the state of the switch based on a result of a second detection unit.

Abstract: Disclosed is an oscillator device that includes an oscillating system having a first oscillator, a second oscillator, a first torsion spring for connecting the first and second oscillators each other, and a second torsion spring being connected to the second oscillator and having a common torsional axis with the first torsion spring; a supporting system for supporting the oscillating system; a driving system for driving the oscillating system so that at least one of the first and second oscillators produces oscillation as can be expressed by an equation that contains a sum of a plurality of time functions; a signal producing system for producing an output signal corresponding to displacement of at least one of the first and second oscillators; and a drive control system for controlling the driving system on the basis of the output signal of the signal producing system so that at least one of amplitude and phase of the time function takes a predetermined value.

Abstract: In a switching power source, in a state where a second voltage smaller than a first voltage is output from an output unit by intermittently driving a switching unit, the switching unit changes a number of driving times of the switching unit for each driving cycle when the switching unit is intermittently driven.

Abstract: An image forming apparatus comprises a developer carrier (101) for developing an electrostatic latent image by supplying an image carrier with developer inside a developer container (100); an electrode member (104) opposing the developer carrier (101) via a space accommodating the developer; an inverter (301); a transformer (302) for transforming an AC voltage from the inverter (301); a rectifying circuit (303) for rectifying the output of the transformer and generating a DC voltage for image formation; a DC voltage applying unit (306) for applying the AC voltage, which is output from the transformer, to the electrode member (104); and a developer remaining-amount detection unit (305) for detecting amount of developer remaining inside the developer container (100) based upon electrostatic capacitance between the developer carrier (101) and electrode member (104).

Abstract: A controller determines a state of a switch unit based on a potential difference between a power supply side and a load side of the switch unit. Alternatively, when an electronic device is in a first operating state, the controller determines a state of the switch based on a result of a first detection unit. When the electronic device is in a second operating state that a power consumption of the device is lower than that in the first operating state, the controller determines the state of the switch based on a result of a second detection unit.

Abstract: An image forming apparatus includes an alternating-current high-voltage power supply generating an alternating-current bias for detection of the remaining amount of toner. The alternating-current high-voltage power supply includes a piezoelectric transformer, a piezoelectric-transformer driving unit, a piezoelectric-transformer driving-signal generating unit, a voltage detecting unit, a voltage setting unit, and an controlling unit that feeds back a difference signal between a detection level signal supplied from a detection signal detecting unit and a setting signal supplied from the voltage setting unit to the piezoelectric-transformer driving-signal generating unit to control an output voltage from the piezoelectric-transformer.

Abstract: An image forming apparatus includes an alternating-current high-voltage power supply generating an alternating-current bias for detection of the remaining amount of toner. The alternating-current high-voltage power supply includes a piezoelectric transformer, a piezoelectric-transformer driving unit, a piezoelectric-transformer driving-signal generating unit, a voltage detecting unit, a voltage setting unit, and an controlling unit that feeds back a difference signal between a detection level signal supplied from a detection signal detecting unit and a setting signal supplied from the voltage setting unit to the piezoelectric-transformer driving-signal generating unit to control an output voltage from the piezoelectric-transformer.

Abstract: An image forming apparatus comprises a developer carrier (101) for developing an electrostatic latent image by supplying an image carrier with developer inside a developer container (100); an electrode member (104) opposing the developer carrier (101) via a space accommodating the developer; an inverter (301); a transformer (302) for transforming an AC voltage from the inverter (301); a rectifying circuit (303) for rectifying the output of the transformer and generating a DC voltage for image formation; a DC voltage applying unit (306) for applying the AC voltage, which is output from the transformer, to the electrode member (104); and a developer remaining-amount detection unit (305) for detecting amount of developer remaining inside the developer container (100) based upon electrostatic capacitance between the developer carrier (101) and electrode member (104).

Abstract: Disclosed is an oscillator device that includes an oscillating system having a first oscillator, a second oscillator, a first torsion spring for connecting the first and second oscillators each other, and a second torsion spring being connected to the second oscillator and having a common torsional axis with the first torsion spring; a supporting system for supporting the oscillating system; a driving system for driving the oscillating system so that at least one of the first and second oscillators produces oscillation as can be expressed by an equation that contains a sum of a plurality of time functions; a signal producing system for producing an output signal corresponding to displacement of at least one of the first and second oscillators; and a drive control system for controlling the driving system on the basis of the output signal of the signal producing system so that at least one of amplitude and phase of the time function takes a predetermined value.

Abstract: An image forming apparatus detects a oscillating state of a oscillation system with a oscillation detector and controls oscillation of the oscillation system such that the oscillation system oscillates a reflective member in a balanced steady state by adjusting a drive force of a drive unit with one or more drive control parameter values on the basis of the detection result obtained by the oscillation detector. When the balanced steady state is detected, the drive control parameter values are stored and are used when an exposure unit is reactivated.

Abstract: An image forming apparatus detects a oscillating state of a oscillation system with a oscillation detector and controls oscillation of the oscillation system such that the oscillation system oscillates a reflective member in a balanced steady state by adjusting a drive force of a drive unit with one or more drive control parameter values on the basis of the detection result obtained by the oscillation detector. When the balanced steady state is detected, the drive control parameter values are stored and are used when an exposure unit is reactivated.