Abstract: An image forming apparatus comprises a light source, a photosensitive member and a control unit. The light source turns on in response to a driving current supplied based on image data. An electrostatic latent image is formed on the photosensitive member by exposing the photosensitive member to a light beam output from the light source turned on. The control unit controls the value of the driving current supplied to the light source in accordance with a driving state of the light source so that the value of the driving current supplied to the light source differs and changes with the passage of time in accordance with the driving state of the light source prior to the driving current being supplied to the light source.

Abstract: A method for reducing visible artifacts among image pixels formed on recording media by a plurality of individually addressable recording channels includes operating the recording channels to form a plurality of image pixel arrangements, wherein each image pixel arrangement comprises a plurality of image pixel columns extending along a first direction. The image pixels columns in each image pixel arrangement are arranged along a second direction that intersects the first direction. The recording channels form a first image pixel arrangement on the recording media and overlap a first image pixel column with a second image pixel column by an amount along the second direction that is determined based at least on a misalignment along the first direction between two of the image pixel arrangements.

Abstract: A method for reducing visible artifacts includes operating recording channels to form image pixel arrangements comprising a plurality of image pixel columns. Each column extends along a first direction and each image pixel has a size L in a second direction. The recording channels form a first image pixel arrangement and the arrangement includes a first set of M image pixel columns. Image pixels in the first set of M image pixel columns are formed in accordance with first image data. Second image data is modified to include the first image data. Second image pixel arrangement are formed and include a second set of M image pixel columns. A distance between the first set of M image pixel columns and the second set of M image pixel columns is adjusted such that the first set of M image pixel columns is overlapped by the second set of M image pixel columns.

Abstract: An optical disc device includes a position detector which detects a position of the pickup in accordance with a output signal from the first light receiver of a position sensor which receives light from a encoder board, a rotation position detector which detects a rotation position of the disc in accordance a output signal from the second light receiver which receives a reflected light or a transmitted light of the light irradiated onto the variable area of the disc, and a controller which controls a recording dot marks on a label surface of the disc by driving a feed motor to move the pickup based on the rotation position detected by the rotation position detector and the position detected by the position detector and driving the pickup to control a intensity of the laser light in accordance with the rotation position detected by the rotation position detector.

Abstract: Curve information is set in accordance with curving of a scanning line that occurs when an image is formed. A value of a target pixel is corrected on the basis of image data that is provided in a reference window having the target pixel and peripheral pixels, thereby transforming a region having a color of a specified image. The reference window that is used in the transformation is corrected in accordance with the curve information with respect to a main scanning position for pixels that are to be processed.

Abstract: An optical scanning device includes a housing, a light source, a rotatable polygon mirror deflecting a light beam from the light source, a scanning optical system scanning a scanning object with the light beam from the polygon mirror, first and second reflective mirrors one of which is provided inside a deflection area, and a photodetector detecting the timing of scanning of the scanning object with the light beam from the one of the first and second reflective mirrors. The scanning object is one of first and second scanning objects. The housing includes first and second supports configured to support the first and second reflective mirrors at first and second positions, respectively, that are outside first and second scan-use areas, respectively. The first position is also inside the second scan-use area. The first and second scan-use areas are used for the scanning of the first and second scanning objects, respectively.

Abstract: A light scanning unit includes a light source unit to emit a plurality of light beams, a light deflector to deflect the plurality of light beams emitted from the light source unit in a sub-scanning direction, an incident optical system to allow the plurality of light beams emitted from the light source unit to be incident on different reflection surfaces of the light deflector, and an imaging optical system that allows a plurality of light beams that are deflected by the light deflector, to be imaged on different scanning surfaces, wherein the incident optical system includes at least one incident light path changing member that folds light paths of the plurality of light beams between the light source unit and the light deflector.

Abstract: Provided is an image forming apparatus to form an image by scanning with a light beam through a polygon mirror, having a motor drive section to rotate and drive the polygon mirror based on a polygon drive clock pulse and an image processing section capable of adjusting image magnification through image processing, and a control section to control that at least image magnification adjustment by changing revolution of the polygon mirror or image magnification adjustment through the image processing in the image processing section is selected in accordance with an output form of the image when the image magnification is adjusted.

Abstract: A surface-condition-information obtaining unit obtains information on a surface condition of a rewritable display medium on which information is reversely displayed visually. A write-laser output unit outputs a write laser to irradiate the rewritable display medium with the write laser, to perform a drawing on the rewritable display medium. A control unit performs a write process for displaying an image on the rewritable display medium by adjusting a laser output condition based on the information obtained by the surface-condition-information obtaining unit and controlling the write-laser output unit based on an adjustment of the laser output condition.

Abstract: A light sensor generates a detection signal upon receiving laser light. A rotation sensor generates a rotation signal in synchronization with rotation of a polygon motor. A mirror-rotation-signal generating section generates a mirror rotation signal, based on the detection signal. A motor-rotation-signal generating section generates a motor rotation signal, based on the rotation signal. A phase-difference measuring section measures a phase difference between the motor rotation signal and the mirror rotation signal A prediction-signal generating section generates a prediction signal that is delayed from the motor rotation signal by the phase difference. A switching section switches a control mode between: a mirror control mode in which the mirror rotation signal is used to control a rotational speed of the polygon mirror; and a prediction control mode in which the prediction signal is used to control the rotational speed. A motor driver drives the polygon motor in the selected control mode.

Abstract: According to one embodiment, an organic EL device includes a substrate, a first translucent insulating film, a second translucent insulating film, a first electrode, a second electrode, and an emitting layer. The substrate has a first index of refraction. The first translucent insulating film is on the substrate, and the first insulating film has a second index of refraction higher than the first index of refraction. The second translucent insulating film is on the first insulating film, and the second insulating film has a third index of refraction lower than the second index of refraction. The first electrode is on the second insulating film, and the first electrode has a fourth index of refraction higher than the third index of refraction. The second electrode is facing the first electrode. The emitting layer is between the first electrode and the second electrode.

Abstract: In a driving circuit, a drive transistor supplies drive electric current to record elements to construct an array, and a reference electric current generating circuit that provides a control voltage to the drive transistor and controls the drive electric current, wherein the drive transistor is composed of a first PMOS transistor and a second PMOS transistor that are connected in series; and the reference electric current generating circuit has a resistance element and a operational amplifier that are used to set a reference electric current for deciding the control voltage, wherein an output of the operational amplifier is provided to a control terminal of the first PMOS transistor; and a drive electric current ON/OFF signal to control on/off of the drive electric current is provided to a control terminal of the second PMOS transistor.

Abstract: An exposure device includes: an optical system member that causes light irradiated from a light emitting element to converge; an optical system support part that supports the optical system member; and a fixing member for fixing the optical system member to the optical system holding part. An elongation of the fixing member is in a range of 40% to 80% inclusive.

Abstract: An optical scanner includes a light source, an optical part, a housing, and a retainer. The light source projects light against a target. The optical part is disposed on a light path between the light source and the target. The housing houses the light source and the optical part. The retainer fixed to the housing holds the optical part and includes a plurality of flanges disposed along an outer circumference of the retainer. One of the plurality of flanges of the retainer is adhered to the housing an adhesive agent. An image forming apparatus includes the optical scanner.

Abstract: Provided is an optical scanning device including: a plurality of light sources; an optical deflector that includes reflection surfaces that deflect different light beams toward opposite sides of the optical deflector; and a light-shielding member provided in an area between incident light beams emitted from the plurality of light sources. The light-shielding member is positioned such that a portion of the light-shielding member is in a light-shield area surrounded by a circumscribed circle of the optical deflector, a line tangent to the circumscribed circle and orthogonal to a Y direction, and the incident light beam, the Y direction being a direction parallel to a main scanning direction and passing through a rotation center of the optical deflector, the main scanning direction being a direction, in which surfaces of image carriers are scanned.

Abstract: An image forming apparatus has a speed range showing image forming capability per unit time that is determined in advance, and is settable to either a model set at a relatively low-speed range or a model set at a relatively high-speed range. Then, the arrangement of the laser elements is differentiated between a low-speed machine and a high-speed machine each other. Even when timing of writing for the high-speed machine is applied to the arrangement of the laser elements for the low-speed machine to write in an image, the image is not able to be written successfully, and resulting in an image which is displaced vertically.

Abstract: An optical device comprising a region divided into a first division plane running in parallel with a direction of an incident vector of a laser beam entering an incidence place for the laser beam and a second division plane running in parallel with the direction of the incident vector and normal to the first division plane, wherein: provides the laser beam with phase rotation angles differentiated by ? between the regions divided by the first division plane when the laser beam travels in the direction of the incident vector and is linearly polarized in a direction parallel to the first division plane; and also provides the laser beam with phase rotation angles differentiated by ? between the regions divided by the second division plane when the laser beam travels in the direction of the incident vector and is linearly polarized in a direction parallel to the second division plane.

Abstract: A recording/reproducing apparatus performs labeling that matches the information recorded on a recording medium. The recording/reproducing apparatus labels the content stored on a recording medium, and includes a control unit that acquires label information for labeling the content. A printing unit labels the label information on the recording medium.

Abstract: An optical scanning device includes a pre-deflection optical system including a first optical element that adjusts the shape of beams emitted from the light source; and a second and third optical elements arranged such that the second optical element is arranged closer to the light source than the third optical element is. Both of the second and third optical elements have no refracting power in the deflection scanning direction and have positive refracting power only in a direction perpendicular to the deflection scanning direction. An interval between scanning lines formed on the scanned area and a deviation of the scanning-line interval between scanning positions are adjusted by displacement of the second and third optical elements in a direction of an optical axis of the pre-deflection optical system and displacement of at least one of the second and third optical elements in the direction perpendicular to the deflection scanning direction.

Abstract: In a method for producing a permanent mark in an optical element which consists essentially of a material that is transparent in the visible spectral region, a marking region of the optical element is irradiated with laser radiation in order to generate local, near-surface material changes in such a way that a mark of prescribed shape and size is generated. The laser radiation has an operating wavelength ? from the wavelength region between 1.1 ?m and 9.2 ?m. A thulium-doped fiber laser is preferably used as laser radiation source. The operating wavelength is selected in dependence from the material of the optical element such that the material exhibits a partial absorption with a transmittance between 60% and 98%. The method can be used, in particular, to provide spectacle lenses, contact lenses or intraocular lenses with marks.

Abstract: According to one embodiment, an organic EL device includes a first substrate, a second substrate, an adhesive agent, and a drying agent. An organic EL element is formed on the first substrate. The second substrate has a first surface facing the first substrate and a second surface on an opposite side from the first surface. A concave portion having a bottom portion and a sidewall portion is formed on the first surface. The adhesive agent is surrounding the organic EL element. The adhesive agent is configured to join the first substrate and the second substrate to each other. The drying agent is applied to at least a part of the bottom portion and the sidewall portion of the concave portion.

Abstract: The present invention provides an image processing method which includes at least any one of an image recording step and an image erasing step, wherein a light irradiation intensity I1 at a center position of the laser beam irradiated in the image recording step and a light irradiation intensity I2 on an 80% light energy bordering surface to the total light energy of the irradiated laser beam satisfy the expression, 0.40?I1/I2?2.00, and in the image recording step, at an overlap portion where a first image line among a plurality of image lines constituting an image is overlapped with a second image line, any one of the first image line and the second image line is not to be recorded.

Abstract: Translucent, transparent, or semi-translucent microlens sheetings with composite images are disclosed, in which a composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. The sheeting may have at least one layer of material having a surface of microlenses that form one or more images at positions internal to the layer of material, at least one of the images being a partially complete image. Additional layers, such as retroreflective, translucent, transparent, or optical structure layers may also be incorporated into the sheeting.

Abstract: A plotting device (1) includes: plotting means (13) for plotting a desired pattern onto a label plane by applying a laser beam (LB) to the label plane (120) of a recording medium (100); drive means (15) for driving the plotting means along the label plane; voltage application means (17) for applying a first voltage and a second voltage for driving the drive means to the drive means; and control means (31) for controlling the voltage application means so that the first voltage and the second voltage have the same polarity and amplitude when the plotting means is positioned at the initial position corresponding to the position where plotting of the desired pattern onto the label plane is to be started.

Abstract: According to one embodiment, the control section forms a latent image pattern for detecting malfunction, on each photoconductive drum. The control section determines malfunction of each laser unit based on the detection result of each surface potential sensor with respect to the formed latent image pattern.

Abstract: A driving device that drives a light emitting thyristor array includes: a first driving circuit operated by a second power source; a scanning circuit including plural stages of scanning thyristors and sequentially scanning the plural stages of light emitting thyristors, a second driving circuit operated by a second power source, generating first and second clock signals for driving the scanning circuit, and outputting the first and second clock signals from first and second clock terminals, respectively, a terminal of an odd numbered stage scanning thyristor is commonly connected to the first clock terminal, another terminal of an even numbered stage scanning thyristor is commonly connected to the second clock terminal, and a control terminal of a first stage scanning thyristor is connected to the second clock terminal via a first resistor.

Abstract: There is provided with an image forming apparatus, which includes: a laser output unit that outputs laser light; a rotary polygon mirror that reflects the laser light output from the laser output unit; a photoconductor where the laser light reflected from the rotary polygon mirror is incident to scan; and a controller that corrects the written position of laser light on the photoconductor in a first state where the amount of laser light output from the laser output unit is a first amount of light and a second state where the amount of laser light is larger than the first amount of light, by controlling emission timing of the laser output unit.

Abstract: An optical scanner includes a housing, a light source, a polygon mirror, an optical device, and a holder. The housing includes a mounting portion. The light source projects light. The polygon mirror is enclosed within the housing and rotates to deflect the light projected from the light source. The optical device is disposed substantially near the polygon mirror. The holder is disposed within the housing and attached to the housing at the mounting portion, and holds the optical device in place. A distance L1 between a center of rotation of the polygon mirror and the optical device is shorter than a distance L2 between the center of rotation of the polygon mirror and the mounting portion. An image forming apparatus includes the optical scanner.

Abstract: An optical scanning device, arranged on one side of at least two to-be-scanned members in a second direction, and the two to-be-scanned members being arranged in a first direction perpendicular to the second, includes: an illuminating system that emits beams including a first beam and a second beam whose polarization directions are different from each other; an optical deflector that deflects the beams; and a scanning optical system that includes a polarization separation element that transmits one of the first and second beams and reflects the other; a first mirror group including reflecting mirrors for guiding the first beam to a to-be-scanned member; and a second mirror group including reflecting mirrors for guiding the second beam to a to-be-scanned member. Last-stage reflecting mirrors in the first and second mirror groups are arranged on one side of the beams deflected by the optical deflector in the second direction.

Abstract: To provide high flexibility in the arrangement of optical paths toward a plurality of photosensitive members and not to cause an increase in size of an image forming apparatus even when a cartridge capacity is increased, provided is an image forming apparatus including: light source units; a deflecting unit for deflecting a plurality of light beams for scanning; a plurality of photosensitive members; an imaging optical system for imaging the light beams deflected for scanning; and a plurality of toner containers, in which the toner containers are different in capacity, and an optical path length from the photosensitive member for the same color as the toner container having a large capacity to the deflecting surface of the deflecting unit is longer than an optical path length from the photosensitive member for the same color as the toner container having a small capacity to the deflecting surface of the deflecting unit.

Abstract: The image forming apparatus includes a chassis; plural image bearing members; plural optical scanning devices having the same configuration and located on respective installation positions of the chassis after installed thereon to scan the image bearing members with light beams; and plural incompatibility imparting mechanisms. The incompatibility imparting mechanisms are located on the corresponding optical scanning devices, and have the same configuration and the same initial state before the plural optical scanning devices are installed on the chassis, but achieve incompatible states after the optical scanning devices are installed. When the optical scanning devices in the incompatible states are detached from the chassis and then attached again thereto, the incompatibility imparting mechanisms prevent the corresponding optical scanning devices from being set to positions other than the respective installation positions.

Abstract: A laser scanning assembly generates a laser beam and scans the laser beam through a plurality of scan lines to form desired dots. Each scan line is positioned to overlap an adjacent scan line and each dot includes a plurality of segments. The scanning assembly scans the laser beam through multiple scan lines to fully discharge each segment of each dot. The laser scanner assembly would typically be part of a laser printer.

Abstract: An optical scanning device includes an enclosure having a plurality of windows covered with transparent members. The enclosure houses a plurality of light sources, a scanning portion, optical elements and a light amount attenuation portion. The scanning portion deflects each of a plurality of light beams emitted from a plurality of light sources at a constant angular speed in a main scanning direction. The optical elements constitute respective light paths from the scanning portion to the windows for the plurality of light beams, respectively. The light amount attenuation portion attenuates light amount in a light path of a first light source among the plurality of light sources in a downstream side of the position where a light beam emitted from a second light source enters as stray light. The drive portion drives the first light source so as to compensate for light amount attenuated by the light amount attenuation portion.

Abstract: A light-emitting device includes: a circuit board including at least two of signal interconnection layers each having plural signal interconnections, at least adjacent two of the signal interconnection layers including signal interconnections provided so that center positions of the respective signal interconnections in a direction intersecting with a longitudinal direction are displaced from each other in portions of the signal interconnections provided in the longitudinal direction; and plural light-emitting chips each having plural light-emitting elements, the light-emitting chips being arrayed in line in the longitudinal direction on a surface of the circuit board.

Abstract: A surface emitting laser element includes a light emission part having a mesa structure. The light emission part includes a lower reflector; a resonator structure including an active layer; and an upper reflector. The lower reflector, the resonator structure and the upper reflector are laminated on a substrate. A peripheral part of a top surface of the mesa structure is covered by a dielectric layer that has a tapered surface such that a thickness decreases in a direction toward an outermost part, a taper angle of the tapered surface with respect to a surface of the substrate is smaller than a slope angle of a side wall of the mesa structure with respect to the surface of the substrate, and an end part of the dielectric layer coincides with an end part of the upper reflector.

Abstract: A laser driving device in the embodiment includes: a laser light source that emits laser light; a light source drive control unit that adjusts a light amount of laser light emitted from the laser light source constant and controls on-off driving of the laser light source; a light amount adjustment element that is disposed in an optical path of laser light emitted from the laser light source and is capable of electrically changing transmittance or reflectance of the laser light that is entered thereinto; and a peak light amount control unit that controls the transmittance or the reflectance of the light amount adjustment element, so as to adjust a peak light amount of the laser light that is output from the light amount adjustment element after having traveled through or having been reflected by the light amount adjustment element.

Abstract: An image forming apparatus includes a photoconductor, a charger to charge the photoconductor, a multi-beam scanning unit, a development unit, and a transfer unit. The multi-beam scanning unit includes a vertical cavity surface emitting laser as a light source having light emitting elements arrayed in main and sub-scanning directions by setting an interval between light emitting elements adjacently disposed at a center portion of the scanning unit in the sub-scanning direction narrower than an interval between other light emitting elements adjacently disposed at other portions of the scanning unit in the sub-scanning direction, a deflecting element to deflect light emitted from the light emitting elements to scan the surface of photoconductor by an interlace scan, and a light intensity adjustment unit to adjust light intensity of the light emitting elements adjacently disposed at the center portion relative to a light intensity of other light emitting elements adjacently disposed at other portions.

Abstract: An optical scanning apparatus includes a housing, light deflector, first optical system and reinforcement member. The housing includes a peripheral wall and a partitioning portion to divide an inner side of the peripheral wall into first and second portion. The partitioning portion includes a first hole to cause the first portion to communicate with the second portion to form an optical path. The light deflector mounted in the first portion has a rotatable polygon mirror to perform deflection scanning of scanning light beams emitted from light sources and a drive unit to drive the rotatable polygon mirror to rotate. The first optical system mounted at least in the first portion causes the scanning light beams reflected from the rotatable polygon mirror to return towards the first hole. The reinforcement member mounted on a surface facing at least the second portion on the partitioning portion reinforces the housing.

Abstract: An image forming apparatus capable of reducing density variation that occurs in an output image when the rotational speed of a polygon mirror is changed. A light source emits a light beam for forming an electrostatic latent image on a photosensitive drum. The polygon mirror deflects the light beam such that the light beam moves on the photosensitive drum in a predetermined direction. A polygon mirror control circuit controls the polygon mirror such that when the toner image is to be formed at a first magnification, the rotational speed of the polygon mirror is made higher than when the toner image is to be formed at a second magnification that is larger than the first magnification. When the toner image is to be formed at the first magnification, the light beam becomes smaller in light amount than when the toner image is to be formed at the second magnification.

Abstract: An optical scanning apparatus includes a housing, light source, deflector, imaging lens, reflective mirrors, a synchronization detector and synchronization detection mirror. The housing has a plate to partition the housing. The deflector deflects a light beam emitted from the light source. The imaging lens converts the deflected light beam into a constant speed scanning light beam. The reflective mirrors reflect the constant speed scanning light beam to a photoreceptor. The synchronization detector detects timing for starting scanning of the photoreceptor. The synchronization detection mirror reflects the light beam to the synchronization detector. At least one of the reflective mirrors is disposed midway in a synchronization detection light path extending from the deflector to the synchronization detection mirror. The light beam reflected by the synchronization detection mirror is reflected again by at least one of the reflective mirrors, such that the light beam is guided to the synchronization detector.

Abstract: Disclosed is an image forming apparatus that makes it possible to cope with the deviations in the main-scanning direction when the image forming velocity has been changed. The apparatus includes: a light source; a polygon mirror; a start-position light detecting section to detect a light beam at a main-scanning start point; a stop-position light detecting section to detect the light beam at a main-scanning stop point; a measuring section to measure a time difference between times when the start-position light detecting section and the stop-position light detecting section detect the light beam; a magnification correction data creating section to create magnification correction data for every rotation number of the polygon mirror, based on the main-scanning time; and a magnification factor correcting section to adjust interval distances between positions of exposed dots so as to correct the magnification factor in the main-scanning direction by using the magnification correction data.

Abstract: A light source unit includes a surface-emitting laser array including light emitting units; and an apertured member provided on a light path of light beams emitted from the surface-emitting laser array, the apertured member including an aperture. In at least one direction, an intensity distribution of interference patterns caused by the light beams passing through the aperture includes an equal number of crests and troughs.

Abstract: An optical disc drive for marking a label side of a lightscribe disc is provided. The optical disc drive includes a metallic plate, a spoke detecting device and a spindle motor PCB. The spoke detecting device is used for detecting spoke patterns on the lightscribe disc. The spindle motor PCB is supported on the metallic plate and having a notch such that a receptacle is defined by sidewalls of the notch and a surface of the metallic plate. The spoke detecting device is received in the receptacle such that the spoke detecting device is separated from the lightscribe disc by a specified gap.

Abstract: An image forming apparatus is provided. The image forming apparatus includes: a photosensitive member on which an electrostatic latent image is to be formed; a first body which rotatably supports the photosensitive member; an exposing unit which exposes the photosensitive member; a second body which supports the exposing unit movably between an exposing position in which the exposing unit exposes the photosensitive member and a retracting position in which the exposing unit is retracted from the photosensitive member; a first grounding unit which, when the exposing unit is positioned at the exposing position, causes the exposing unit to be electrically connected to the first body; and a second grounding unit which, when the exposing unit is positioned at the retracting position, causes the exposing unit to be electrically connected to the first body via the second body.

Abstract: An optical disc drive for marking a label side of a lightscribe disc is provided. The optical disc drive includes a spoke detecting device, a traverse assembly frame, a spindle motor PCB and an insulating base. The spoke detecting device is used for detecting spoke patterns on the lightscribe disc. The spindle motor PCB is communicated with the spoke detecting device through a flexible cable. The insulating base is coupled with the frame for supporting the spoke detecting device such that the spoke detecting device is separated from the lightscribe disc by a specified gap.

Abstract: A system and method for watermarking a film includes a light source array including one or more light sources having light directed toward a film to be watermarked. A control mechanism is configured to synchronize a position of the film with the light sources such that the light sources are activated to record a watermark on the film to identify an aspect of the film, wherein the watermark includes a plurality of spots aligned transversely to a direction of film motion during printing of the film.

Abstract: An optical head includes a light-emitting substrate that emits light, a lens that focuses the light emitted from the light-emitting substrate, a holder that hold the light-emitting substrate and the lens, and a drive circuit that includes an electric element fixed to at least one of the lens and the holder and drives the light-emitting substrate.

Abstract: An optical head includes a light-emitting element to emit light, a substrate to which the light-emitting element is fixed, a heat radiation member to which the substrate is fixed, a filling member filled between the substrate and the heat radiation member, and a lens to focus the light emitted from the light-emitting element.

Abstract: According to one embodiment, an optical head includes a light emitting substrate emitting light and a heat sink including a contact section in contact with an area different from a light emitting area of the light emitting substrate and a deformable section separated from the light emitting substrate and deformed according to thermal expansion of the light emitting substrate.

Abstract: An image forming apparatus includes: a light source; a brushless motor including a stator and a rotor; a rotary polygon mirror rotated by the brushless motor to form scanning lines on a photosensitive member; an energization switching unit turning on/off energizations of the coils; a voltage detecting unit outputting a detection signal based on induced voltages generated in coils of the stator by rotation of the rotor; a motor controlling unit turning on/off of the energizations by the energization switching unit based on the detection signal; an electric component that operates during formation of the scanning lines; and a power supply controlling unit which, in a detecting period of the detection signal for starting a rotation control of the brushless motor, reduces an amount of electric power supplied to the electric component to less than in a period of the formation of scanning lines after the detecting period.