Abstract: A paper sheet handling device (a banknote handling device) includes a paper sheet detection device (a tracking sensor) configured to detect a paper sheet, and a handling unit performing handling related to the paper sheet based on the time when the paper sheet detection device detects an end of the paper sheet. The paper sheet detection device includes a pair of rolling bodies (rollers) facing each other, disposed on a transport path transporting the paper sheet, and configured so that the paper sheet passes therebetween, and a detection unit detecting displacement of the rolling bodies when the paper sheet passes between the pair of rolling bodies to detect the paper sheet.

Abstract: Laser drilling devices are disclosed which include a laser beam source and a laser drilling head. The laser drilling head includes a beam manipulator system in which the only dynamically moving optical element is a mirror. The mirror is dynamically and reciprocally translatable along the direction of the incoming laser beam and is also dynamically and reciprocally tiltable about an axis that is perpendicular to the nominal optical axis of the drilling head. The drilling head also includes a spinnable laser beam rotating system, a simplified compensation system, and a focusing system. The compensation system includes as its only laser beam path shifting optical elements one or two wedge plates which, if two, are fixably rotatable relative to one another in planes which are perpendicular to the nominal optical axis of the laser drilling device.

Abstract: An organic light emitting diode (OLED) display is disclosed. One aspect includes a pixel unit including a plurality of pixels formed at portions at which scanning lines and data lines intersect with each other; a scan driver for supplying scan signals to the scanning lines. The OLED display further comprises a data driver for supplying data signals to the data lines; and a data compensation unit changing the input data using a correction coefficient stored as a unit of a pixel block including a plurality of pixels and supplying the changed input data to the data driver. In such OLED display, the pixel block is divided so that the number of pixel arranged in the first direction is different from the number of pixel arranged in the second direction which intersects with the first direction.

Abstract: An organic light emitting diode (OLED) display is disclosed. One ascpect includes a pixel unit including a plurality of pixels formed at portions at which scanning lines and data lines intersect with each other; a scan driver for supplying scan signals to the scanning lines. The OLED display further comprises a data driver for supplying data signals to the data lines; and a data compensation unit changing the input data using a correction coefficient stored as a unit of a pixel block including a plurality of pixels and supplying the changed input data to the data driver. In such OLED display, the pixel block is divided so that the number of pixel arranged in the first direction is different from the number of pixel arranged in the second direction which intersects with the first direction.

Abstract: An image scanner includes: a light source that irradiates, with light, a recording medium on which an image is formed; a light receiving portion that receives light reflected by the recording medium; a reflecting portion that has plural reflecting surfaces respectively disposed at positions having different distances in an optical axis direction from the light receiving portion; and a processing portion that generates information on the image formed on the recording medium and information for measuring illumination depth of the light source, by use of the light received by the light receiving portion.

Abstract: The present disclosure relates to an image reading device, including: a light emitting portion; a light guiding member; a holding member that holds the light emitting portion and the light guiding member; and a case member that holds the holding member. In the image reading device, the light guiding member is shaped like a stick, of which end portion is disposed to face the light emitting portion. The holding member holds the light emitting portion and the light guiding member. In addition, the holding member has: and a holding portion that disposes the light guiding member along a main scanning direction, and positions and holds an end portion on the light emitting portion side in the main scanning direction. The case member holds the holding member.

Abstract: An optical scanner, which is included in an image forming apparatus, includes a light source including a recessed portion provided on an outer circumference thereof, and a housing configured to support the light source. The housing includes a positioning unit configured to position the light source in a vertical optical axis of the light source, and a cutout provided on an inner circumference of the positioning unit. The light source is positioned to the positioning unit with the recessed portion being disposed at the cutout and then is fixed to the housing. The image forming apparatus includes an image carrier configured to form an image on a surface thereof, and the above-described optical scanner.

Abstract: A method of achieving process-direction sub-raster magnification adjustment using non-redundant overwriting. The raster imager provides overwriting while the image path provides non-redundant data for each pass according to the desired magnification adjustment. The same laser power level can be used for the multiple writes, or optionally, it may be varied to further improve spatial resolution of the adjustment.

Abstract: An optical scanner includes: a light source; a light deflector configured to deflect a light beam from the light source in a main scanning direction; a scanning lens through which the light beam having been deflected by the light deflector passes; a beam detector configured to detect the light beam; a mirror disposed between the light deflector and the scanning lens in an optical axis direction of the scanning lens and configured to reflect the light beam having been deflected by the light deflector toward the beam detector; and a wall portion configured to cover one end face of the mirror that faces the scanning lens, wherein the surface of the wall portion facing the scanning lens is tilted with respect to a sub-scanning direction orthogonal to the main scanning direction.

Abstract: A light source unit includes a holder, a light source, coupling lens, and a support member. The light source is supported by the holder and projects a light beam against a target. The coupling lens adjusts an optical axis of the light beam. The support member contacts the holder and the coupling lens to fix the coupling lens in place on the holder after the coupling lens adjusts the optical axis of the light beam. The holder and the coupling lens are adhered to the support member using an adhesive agent. An optical scanner includes a rotary deflector to deflect and scan the light projected from the light source unit, a scan optical element to focus the light deflected by the rotary deflector, and the light source unit. An image forming apparatus includes the optical scanner.

Abstract: A surface-emitting semiconductor laser includes a substrate, a first semiconductor multi-layered reflector of a first conductivity type, an active region, a second semiconductor multi-layered reflector of a second conductivity type, a columnar structure, a current-confining layer including a conductive area surrounded with an oxidized area, a first electrode defining a light-emitting window, a first dielectric film covering the light-emitting window, and a second dielectric film formed on the first dielectric film. The second dielectric film has an asymmetrical shape having a long axis and a short axis, the second dielectric film is located at a position overlapping with the conductive area, the second refractive index n2 is greater than the first refractive index n1, the thickness of the first dielectric film is an odd multiple of ?/4·n1 (?: oscillation wavelength), and the thickness of the second dielectric film is an odd multiple of ?/4·n2.

Abstract: The invention has an image forming apparatus with a deviation amount calculator for obtaining, by an arithmetic operation, by an arithmetic operation, the deviation amount between the laser beam irradiating positions for each color, under the condition that the deviation amount increases gradually according to a time lapse in at least one of the plurality of operating modes, according with a further time lapse, the deviation amount between the laser beam irradiating positions for each color decreases gradually, and according with a further time lapse, the deviation amount between the laser beam irradiating positions for each color is converged.

Abstract: According to an aspect of the present invention, there is provided an optical scanning apparatus including a light source, an optical unit, a first controller and a second controller. The light source emits a predetermined number of laser beams, the laser beams to be arranged in a sub-scanning direction on a recording medium. The optical unit simultaneously scans the laser beams in parallel on the recording medium. The first controller changes a dot size of the laser beams in a main scanning direction. The second controller changes the predetermined number.

Abstract: A scanning optical device includes a rotating polygonal mirror having a plurality of reflecting faces. A first light source emits a first light beam from one section obtained by sectioning the scanning optical device with a plane passing through the rotation axis of the rotating polygonal mirror. A second light source emits a second light beam from the other section. The first calculation unit calculates scan time of the first light source. The second calculation unit calculates scan time of the second light source. The jitter correction unit corrects jitter by controlling a pixel clock supplied to the first light source according to the scan time of the second light source. The jitter correction unit also corrects jitter by controlling a pixel clock supplied to the second light source according to the scan time of the first light source.

Abstract: In an image forming apparatus, an energy converting unit receives light from an optical source and converts the light into electric power, and an electrical storage unit stores therein the electric power. The energy converting unit is arranged in such a manner that a relative position of the energy converting unit to the optical source is always constant when a reading unit is reading an image.

Abstract: Multiple images are combined where the images exhibit variations in illumination between one another. The images are of the same portion of an object, and each image is represented by a set of image data. A comparative data transform is applied to each set of image data, such that the transformed comparative image data isolates and preserves first variations in the illumination between the images but suppresses second differences in illumination between the images. At least one normalization transform is determined from the transformed comparative image data sets. When applied to at least one of the image data sets, the at least one normalization transform minimizes the variation in illumination between the image data sets. Each determined normalization transform is applied to the at least one of the image data sets. The normalized sets of image data are transformed to a single image of the portion of the object.

Abstract: A surface-emitting semiconductor laser includes a substrate, a first semiconductor multi-layered reflector of a first conductivity type, an active region, a second semiconductor multi-layered reflector of a second conductivity type, a columnar structure, a current-confining layer including a conductive area surrounded with an oxidized area, a first electrode defining a light-emitting window, a first dielectric film covering the light-emitting window, and a second dielectric film formed on the first dielectric film. The second dielectric film has an asymmetrical shape having a long axis and a short axis, the second dielectric film is located at a position overlapping with the conductive area, the second refractive index n2 is greater than the first refractive index n1, the thickness of the first dielectric film is an odd multiple of ?/4·n1 (?: oscillation wavelength), and the thickness of the second dielectric film is an odd multiple of ?/4·n2.

Abstract: An image reading apparatus in which cross-talk noise occurring between plural reading units is reduced, an image reading method and an image reading program are provided. There are included plural reading units that respectively operate at different timings, a noise calculation unit that acquires first read data as a result of reading of a first read object as the read object by the plural reading units, acquires an operation state of the plural reading units during the reading of the first read object, and calculates, based on the operation state and the first read data obtained in the operation state, noise information based on the operation state, and a noise removal unit that acquires second read data as a result of reading of a second read object as the read object different from the first read object by the plural reading units, and removes noise from the second read data based on the noise information calculated by the noise calculation unit.

Abstract: An optical scanning device includes n-odd (n?2) light sources disposed at different positions at least in a sub-scanning direction, a pixel forming part in which one pixel is depicted by light beams emitted from m-odd (n?m?2) light sources of the n-odd light sources and a distance of adjacent light sources for emitting the light beams in the sub-scanning direction is less than 5 ?m, and a light source driving control part configured to control an emitting state of the light sources for depicting the one pixel and conduct an emission driving control for moving a gravity center of the one pixel in the sub-scanning direction.

Abstract: An optical scanning apparatus capable of suppressing a track error is provided. The apparatus includes a swing mirror supported by a torsional vibration system having a first natural frequency and a second natural frequency that is a double of the first natural frequency, and a driving unit applying a swing torque to the vibration system. The apparatus can detect passage of an optical beam at two locations and output track information of the swing mirror, and perform feedback control. When the feedback control is performed, the apparatus sequentially switches target tracks of scanning in a forward and a backward direction, the phases of the second natural frequency of the target tracks being mutually reversed, calculates an amount of offset compensation based on a difference between the predetermined target track and the track for each scanning in the forward and backward direction, and reflects the amount in the feedback control.

Abstract: A method for providing a visible reference marker on a scanning unit for orienting an item to be scanned or copied includes the steps of emitting a light from a light source, guiding the light to a scanning unit having a contact glass scanning surface, and redirecting the light to define an illuminated reference marker substantially adjacent to the contact glass. A reference marker assembly for accomplishing that method is provided, including a light source, a waveguide for guiding light emitted from the light source to a scanning unit having a contact glass, and a redirector for redirecting the light to define an illuminated reference marker adjacent to the contact glass, for orienting an item to be copied or scanned. The light source may be a light emitting diode, and the redirector may be a light diffuser for redirecting the collected light to define an illuminated reference marker adjacent to the contact glass.

Abstract: An optical device including: a laser light emitting portion that emits laser light; a polygon mirror having a reflective surface that reflects the laser light, the polygon mirror being driven to rotate and deflecting the laser light emitted from the laser light emitting portion; a first lens through which the laser light reflected by the polygon mirror is transmitted, the first lens refracting the laser light; a second lens through which the laser light having passed through the first lens is transmitted, the second lens refracting the laser light; and an adjustment unit that adjusts at least one of a length of a first optical path between the polygon mirror and the first lens, and a length of a second optical path between the first lens and the second lens.

Abstract: An optical scanning apparatus which includes: a light source unit which emits a light beam; a deflection scanning device which deflects the light beam emitted from the light source unit; an optical scanning unit having a scanning imaging lens and which scans a surface to be scanned; and a light beam detector which detects a position in a sub-scanning direction of the light beam, and is disposed in a position maintaining a correlation, in a time-varying characteristic, between an amount of change of a position in the sub-scanning direction of the light beam on the surface to be scanned and an amount of change of a position in the sub-scanning direction of the light beam detected by the light beam detector, in which a difference between the amount of change of the position in the sub-scanning direction of the light beam on the surface to be scanned and the amount of change of the position in the sub-scanning direction of the light beam detected by the light beam detector is equal to or less than a set value.

Abstract: A laser driving device that drives a semiconductor laser based on a light-emitting signal includes an expansion circuit that expands a pulse width of the light-emitting signal based on a known difference between the pulse width of the light-emitting signal and a lighting pulse width of the semiconductor laser when the semiconductor laser emits light according to the light-emitting signal, and a driver that outputs a driving signal to the semiconductor laser according to an output signal of the expansion circuit.

Abstract: A light-source drive control unit divides each pixel of the image data into a plurality of subpixels, deletes certain subpixels from the image data in accordance with predetermined correction data, shifts remaining subpixels in the sub-scanning direction thereby obtaining reduced image data, and controls a plurality of light sources based on the reduced image data in such a manner that one line of the subpixels is formed with a light beam emitted from a corresponding one of the light sources.

Abstract: An image sensor includes a light source; a bar-shaped light-guiding element having a first light-emitting section, which propagates light from the light source and irradiates an document from an oblique direction, and a second light-emitting section emitting light in a carrying direction of the document; a lens converging the light reflected from the document; a sensor receiving the light passed through the lens; a reflector disposed on the opposite side of the light-guiding element, by reflecting the light from the second light-emitting section such that an optical path of the light emitted from the second light-emitting section is located between the lens and the document, and irradiating the document from an oblique direction; and first and second light-scattering layers formed in areas opposed to the first and the second light-emitting sections, respectively, in the light-guiding element.

Abstract: Apparatus and method for chemical and biological agent sensing. An example sensing apparatus includes a resonator having a resonance frequency. The resonator includes a coil of a photonic crystal fiber. The photonic crystal fiber has a solid region configured to guide a substantially single optical mode of light having, a cladding surrounding an exterior of the solid region, and at least one hollow core within the cladding. The cladding contains at least one hollow core. The photonic crystal fiber is configured to introduce a fluid that may contain an analyte to the hollow core. The photonic crystal fiber is configured so that the light interacts with the fluid. The resonator is configured to produce a resonance signal centered at the resonance frequency. A predetermined change in the resonance signal indicates a presence of a quantity of the analyte in the fluid.

Abstract: An optical scanning device is provided which comprises a laser array which emits laser beams including a number of beams (1, 2, . . . , n) writing a swath of rasters having a laser scanning section which, when an interlaced scanning period i, is set to a natural number between beams which are adjacent in a sub-scanning direction, scans the laser beams emitted from the laser array with the interlaced scanning period i. The laser scanning section can scan the laser beams such that the beam number n and the interlaced scanning period i are relatively prime natural numbers, and n>i. In a first scan, data for raster lines (1, 2, . . . , n) can be selectively associated with a respective first exposure. At a second scan, data for raster lines (i+1, i+2, . . . , n) can be selectively associated with a respective second exposure and data for raster lines (n+1, n+2, . . . , n+i) can be selectively associated with a respective first exposure. The first respective exposure for raster lines (i+1, i+2, . . .

Abstract: An object is to provide an imaging optical system having a very simple structure that can read image while maintaining excellent image quality without suffering from significant asymmetrical aberrations. An imaging optical system for image reading is adapted to form an image of image information on a surface of an original onto a line sensor while changing a relative position of the original surface and the line sensor to allow the line sensor to read the image information. The imaging optical system includes two off-axial reflecting surfaces, and the two off-axial surfaces are a plus deflecting surface and a minus deflecting surface, or a minus deflecting surface and a plus deflecting surface disposed in the mentioned order from the original surface side, where an off-axial reflecting surface that deflects a reference axis beam clockwise is defined as a minus deflecting surfaces and an off axial reflecting surface that deflects the reference axis beam anticlockwise is defined as a plus deflecting surface.

Abstract: An image forming apparatus includes a first toner image forming section that forms a visible toner image, a second toner image forming section that forms an invisible toner image, in which a resolution of the invisible toner image is lower than a resolution of the visible toner image, and a transfer section that transfers to a medium the visible toner image and the invisible toner image.

Abstract: An image forming apparatus includes an image carrier and an optical scanning device. The optical scanning device generates an optical scanning beam and includes an enclosure. The enclosure includes a pair of arch-like-shaped supporting members. Inside the enclosure there are provided a light source for emitting a light beam, a light deflector for deflecting the light beam emitted from the light source so as to convert the light beam into the optical scanning beam, and at least one reflecting mirror for reflecting the optical scanning beam deflected by the light deflector to scan the image carrying surface of the image carrier. At least one of the reflecting mirrors includes a specific reflecting mirror having a light reflecting surface and mounted on the pair of arch-like-shaped supporting members at a position to reflect the optical scanning beam with the light reflecting surface toward the image carrying surface of the image carrier.

Abstract: A technique for achieving a smart start of scan (SOS) detector that is related with line scan timing on raster output scanners by expanding the available functions to include beam size and position. A start of scan detection system adapted to provide beam size and position control. The system includes a CPU, a data source and laser driver managed by the CPU, and a multiple element pre-patterned detector managed by the CPU and enabling a sensor pattern through which laser beams from the laser driver are passed and detected. According to a method for managing beam size and position in a image processing system, a multiple element pre-patterned detector adapted to enable a sensor pattern is provided wherein at least one laser beam is passed through said sensor pattern enabled by the multiple element pre-patterned detector, analyzed and used by the image processing system to adjust beam size and position.

Abstract: A mobile display apparatus using an optical modulator is disclosed, comprising: a sensor sensing a light reflected from a side of a scanning device and then generating a scanning device reference signal specifying a position of the scanning device; and a driving signal control unit generating such scanning device control signal and optical modulator control signal that allow a light emitted from an optical modulator to be reflected in a predetermined area of the scanning device, by synchronizing the scanning device reference signal transferred from the sensor with an image synchronization signal.

Abstract: An object is to provide an imaging optical system having a very simple structure that can read image while maintaining excellent image quality without suffering from significant asymmetrical aberrations. An imaging optical system for image reading is adapted to form an image of image information on a surface of an original onto a line sensor while changing a relative position of the original surface and the line sensor to allow the line sensor to read the image information. The imaging optical system includes two off-axial reflecting surfaces, and the two off-axial surfaces are a plus deflecting surface and a minus deflecting surface, or a minus deflecting surface and a plus deflecting surface disposed in the mentioned order from the original surface side, where an off-axial reflecting surface that deflects a reference axis beam clockwise is defined as a minus deflecting surfaces and an off-axial reflecting surface that deflects the reference axis beam anticlockwise is defined as a plus deflecting surface.

Abstract: The object of the invention is to extend the life of the light source while uniformizing the illuminance intensity in the main scanning direction. The invention is based on a light source of image reading apparatus comprised of film layers laminated on a transparent substrate in the order of a transparent electrode, an area light emitter and a metal electrode, and emitting light by impressing a specific voltage on these two electrodes. And an area light emitter column configured by arranging area light emitters corresponding to each color of R (red), G (green) and B (blue) in the sub scanning direction, or a monochrome area light emitter is arranged repeatedly in the main scanning direction. Accordingly, even when somewhere in the light emitting element has a defect like the film thickness is thin, the current gathering at this point with the low resistance value becomes a very small volume. Therefore, it would not occur that the film burns out from here.

Abstract: A method for providing a visible reference marker on a scanning unit for orienting an item to be scanned or copied includes the steps of emitting a light from a light source, guiding the light to a scanning unit having a contact glass scanning surface, and redirecting the light to define an illuminated reference marker substantially adjacent to the contact glass. A reference marker assembly for accomplishing that method is provided, including a light source, a waveguide for guiding light emitted from the light source to a scanning unit having a contact glass, and a redirector for redirecting the light to define an illuminated reference marker adjacent to the contact glass, for orienting an item to be copied or scanned. The light source may be a light emitting diode, and the redirector may be a light diffuser for redirecting the collected light to define an illuminated reference marker adjacent to the contact glass.

Abstract: An optical scanning device is provided which comprises a laser array which emits laser beams including a number of beams (1, 2, . . . , n) writing a swath of rasters having a laser scanning section which, when an interlaced scanning period i, is set to a natural number between beams which are adjacent in a sub-scanning direction, scans the laser beams emitted from the laser array with the interlaced scanning period i. The laser scanning section can scan the laser beams such that the beam number n and the interlaced scanning period i are relatively prime natural numbers, and n>i. In a first scan, data for raster lines (1, 2, . . . , n) can be selectively associated with a respective first exposure. At a second scan, data for raster lines (i+1, i+2, . . . n) can be selectively associated with a respective second exposure and data for raster lines (n+1, n+2, . . . , n+i) can be selectively associated with a respective first exposure. The first respective exposure for raster lines (i+1, i+2, . . .

Abstract: Disclosed in an optical scanning apparatus which includes a deflecting unit comprised of a rotary polygon mirror for deflecting a light beam radiated from a light source unit, and a scanning optical system for guiding the light beam deflected by the deflecting unit to a surface to be scanned. In the optical scanning apparatus, individual elements are set such that a diameter of a circumscribed circle of the rotary polygon mirror, the number of deflecting facets of the rotary polygon mirror, an incident angle of the light beam on the deflecting facet at the time when the light beam scans a scanning center, a maximum swing angle of the deflecting facet at the time when an effective scanning range is scanned, and a magnification of the scanning optical system in a sub scanning section can satisfy a predetermined condition, thereby reducing an unevenness of pitches due to a deflecting-facet fall of the rotary polygon mirror, and readily achieving a highly precise and fine image.

Abstract: An optical scanning apparatus includes mechanisms for light modulation, light imaging, light deflecting, and light scanning. The light modulation mechanism includes at least one light modulation device including light modulation elements, and is configured to emit modulated light. The light modulation elements are arranged in a single-dimension formation in a first direction orthogonal to a light axis of the modulated light. The light imaging mechanism transfers the modulated light as light of an object to form an image of the object on an image screen. The light deflecting mechanism deflects the light of the object in a direction orthogonal to the first direction and the axis of the light. The light scanning mechanism is disposed on a passage of the deflected light to scan that light.

Abstract: The deterioration of read-image quality caused by LED color-tone variations is suppressed in a case in which a white-color LED illumination module is used as a light source of a color-image reading apparatus. The color-image reading apparatus includes an illumination module formed of a plurality of white-color LEDs arranged in a main-scanning direction; an image sensor such as a CCD; a unit for moving the original and the image sensor relatively in a sub-scanning direction; and an input masking unit. The illumination module is formed of LEDs having the same color-tone rank. The color-image reading apparatus also includes a setting unit for setting a color-tone rank for the illumination module, and a control unit, such as a CPU, for switching a parameter of the input masking unit according to the color-tone rank.

Abstract: Disclosed is an image capturing apparatus comprising a primary mirror 1 that has a surface which is a section of a surface cut out from a paraboloid with a single focus; a secondary mirror 2 that has a surface which is a section of a surface cut out from a hyperboloid with two foci; and a photodetector 3 which converts the light signal coming from the secondary mirror 2 into an electric signal. The secondary mirror 2 is placed in a position where one of its foci and the focus of the primary mirror 1 match with each other. The photodetector 3 is placed near the other focus of the secondary mirror 2. By using two mirrors, the light from the object is led to the photodetector 3 without being shaded.

Abstract: An image forming apparatus has functions of tilt adjustments to a mirror for reflecting a laser beam and outputting an image after registration of a plurality of images.

Abstract: The present invention provides an optical beam scanning device and an image forming apparatus capable of restraining the light amount irregularity in the main scanning direction in the image plane. An optical beam scanning device of the present invention is for having a light beam with the width in the main scanning direction wider than the width in the main scanning direction of the reflection surface of a deflector incident on the deflector, reflecting and polarizing a part thereof by the reflection surface of the deflector, and focusing the polarized light beam on a surface to be scanned by optical means including a transmission type optical member. Then, the polarization direction of the light beam incident on the deflector is substantially in the main scanning direction.

Abstract: A method of electronic processing of an imagewise exposed dispersed particle photoconductive material imaging element employing pulsed radiation and radio frequency photoconductivity apparatus having a sample capacitor with a gap is described, comprising the steps of: a) placing the imagewise exposed photoconductive material imaging element in an electromagnetic field adjacent the sample capacitor; b) scanning the element through the gap in the sample capacitor with a pulsed, focused beam of radiation; c) directly measuring the photoelectron response of the element and recording the resulting signals from the radio frequency photoconductivity apparatus; and d) advancing the element past the capacitor and repeating steps b) and c); wherein the photoconductive material imaging element comprises photoconductive particles which contain deep electron trapping agents which in an unfilled state effectively decrease the photoconductivity of the photoconductor particles, and wherein imagewise exposure of the photocond

Abstract: An image reader of the present invention comprises a fluctuation detector that can be connected to the external equipment by means of an image data input-output section, and can subject image data, continuous in a first direction and outputted as image information on a test chart is photoelectrically converted by means of a CCD sensor when a mirror set or the test chart is moved in the first direction, to Fourier conversion, thereby obtaining the frequency of a fluctuation of the obtained image data and a maximum value of the amplitude thereof. If the obtained maximum value of the fluctuation amplitude is greater than a given value, the fluctuation detector is used to compare the frequency of the fluctuation and the natural frequency of a drive motor for generating driving force for moving the mirror set or the image. If the fluctuation frequency and the natural frequency are not equal, the value of current supplied to the drive motor is increased.

Abstract: A device for reading out information stored in a storage layer (10), which facilitates a good reproduction quality of this information stored in the storage layer (10). The device (1) includes a radiation source (2) for emitting stimulation radiation (20). Using this stimulation radiation (20), the storage layer (10) is stimulated to emit an emission radiation that corresponds to the information stored in the storage layer (10). The device (1) further includes a receiving device (3) to receive this emission radiation emitted by the storage layer (10). A distance device (30, 56) for setting a pre-specified distance (28, 59) is located between the receiving device (3) and the storage layer (10). A drive device imparts relative movement in a transport direction (A) between the radiation source (2) and the receiving device (3), on one hand, and the storage layer (10) on the other.

Abstract: Upon transferring two image signals to an output apparatus in an image transfer system, the amount of data to be transferred can be reduced. In an image signal output apparatus, subtraction signal generating means generates a subtraction signal from a front-side image signal and rearside image signal, and the subtraction signal as well as either the front-side image signal or the rearside image signal are transferred to an operation and display terminal. When the front-side image signal and the subtraction signal are transferred, the operation and display terminal restores the rearside image signal by carrying out an operation using the subtraction signal and the front-side image signal having been transferred thereto. The front-side image signal and the rearside image signal are similar, and the amount of the subtraction signal is smaller than the amount of the rearside image signal, which results in reduction in the amount of data to be transferred.

Abstract: Because the dynamic range of a solid-state image sensor is relatively narrow, it is necessary to reduce the amount of light using an aperture so that the amount of light incident on the solid-state image sensor is within the range of the dynamic range. However, the amount of control at this time may exceed a controllable range which is the maximum limit of an amount in which diffraction is not generated. As a result, the amount of control by the aperture is determined so that the amount of control by the aperture does not exceed the controllable range, and an ND filter, which corresponds to or is approximate to the amount of control of reduced light which was obtained by subtracting the amount of control by the aperture from the total amount of control, is placed on an optical path.

Abstract: A circular optical reflection apparatus to be used in an optical image capturing device for receiving light ray from a light source and reflecting the light ray at least twice inside the apparatus then projecting the light ray to a lens set for forming an image on an image forming device. The apparatus includes a cylindrical optical member which has its outside surface coating with a reflective material and has an axial cutaway section to serve as a light inlet and a light outlet. Light ray enters through the light inlet into the cylindrical optical member and reflects inside at least twice then emits out through the light outlet. It may obtain an optical path needed for image forming with less number of reflection mirrors. It is smaller size and may be produced and assembled with less time and cost. It can also eliminate accumulated reflection angle tolerance that might otherwise happen to the conventional ones that use reflection mirrors.

Abstract: An image sensor includes a light source; a bar-shaped light-guiding element having a first light-emitting section, which propagates light from the light source and irradiates an document from an oblique direction, and a second light-emitting section emitting light in a carrying direction of the document; a lens converging the light reflected from the document; a sensor receiving the light passed through the lens; a reflector disposed on the opposite side of the light-guiding element, by reflecting the light from the second light-emitting section such that an optical path of the light emitted from the second light-emitting section is located between the lens and the document, and irradiating the document from an oblique direction; and first and second light-scattering layers formed in areas opposed to the first and the second light-emitting sections, respectively, in the light-guiding element.