Abstract: An image reading apparatus includes: light-receiving elements arranged in a main-scanning direction to perform photoelectric conversion pixel by pixel; AD converter units that convert each piece of analog data photoelectric-converted by the light-receiving elements into parallel pieces of digital data; a storage unit that stores therein each of the digital data converted by the AD converter units; a converter unit that reads the digital data stored in the storage unit and converts the read digital data into serial data in the main-scanning direction; a readout control unit that changeably controls a readout start pixel and a readout end pixel of the serial data in the main-scanning direction; and a period change unit that changes a period in which the converter unit converts digital data into serial data in the main-scanning direction based on the readout start pixel and the readout end pixel.

Abstract: An image sensor unit includes: a light source including a light emitting element on a light emitting surface; a light guide that causes light from the light source to be incident on a light incident surface facing to the light emitting surface, ejects the light from a light ejecting surface and illuminates a document; a rod lens array that images reflected light from the document; a sensor substrate on which a photoelectric conversion element is mounted, the photoelectric conversion element converting the reflected light imaged by the rod lens array into an electric signal; and a frame that supports the light source, the light guide, the rod lens array and the sensor substrate, wherein positioning sections are provided on an opposite side of the light emitting surface of the light source and at a part of the frame which is disposed at the opposite side of the light emitting surface.

Abstract: A light-source driving device includes a driving unit configured to drive a light source unit that emits light onto an object; and a driving control unit configured to control the driving unit to drive the light source unit in a first driving mode and a second driving mode. A light emission time of the light source unit is controlled in the first driving mode. An instantaneous value of a quantity of light of the light source unit being controlled in the second driving mode.

Abstract: An image reading apparatus includes: a light source to illuminate an original; a color sensor and a monochrome sensor to receive light reflected from the original illuminated by the light source to output an image signal; an amplifier to amplify the image signal from the color and monochrome sensors; a reflective reference member; and a control circuit to adjust a gain of the amplifier amplifying the image signal from the color sensor that receives light reflected from the reflective member illuminated by the light source, and holds the adjusted gain as a gain setting value for the color sensor, and the control circuit obtains a gain setting value for the monochrome sensor by calculation based on the gain setting value for the color sensor.

Abstract: A portable, thin, flexible, scan-less image capture device with low energy requirement and no moving parts.

Abstract: A frequency distribution of luminances is acquired from an image data acquired by optically reading a document. A frequency distribution of luminances of a background of the document is generated using the maximum frequency of the acquired frequency distribution as the maximum frequency of the frequency distribution of the luminances of the background of the document. A difference between the generated frequency distribution of the luminances of the background of the document and the acquired frequency distribution of the luminances is acquired, and the frequency distribution of the luminances of the background of the document is corrected based on the acquired difference.

Abstract: A visible laser beam scanned by a galvano-scanner system is aligned at each of positioning points on the top surface of a master work by manual operation to record sensor position signals of position sensors on galvano-scanners. The sensor position signals on each positioning point are recorded to create a drive pattern in accordance with recorded sensor position signals. The drive pattern no longer has optics system error sources including focus error and attachment error as well as errors caused by scale, offset and the like, also eliminating the need for entering a distance as far as the top surface of the work. Therefore, the drive pattern with error components removed can be created with ease.

Abstract: A lens array includes a first lens row including first lenses arranged in a first direction, a second lens row including second lenses arranged in a direction substantially parallel with the first direction, a first boundary being a boundary between the first lenses adjacent to each other, a second boundary being a boundary between each of the first lenses and the second lens adjacent to the first lens, and a first join portion where the first boundary and the second boundary join each other. At the first joint portion, the first boundary and the second boundary contact each other with no step as seen in a plane that is substantially orthogonal to the first direction.

Abstract: An image reading apparatus comprises a reading unit including a document table, a cover portion covering the document table, an opening and closing mechanism having a first and second mounting portions and opening and closing the cover portion to an opened and a closed state, a covering member rotating about a rotating shaft of a member side and covering at least a portion of an exposed portion, and a rotating regulating unit regulating rotation of the covering member due to the weight of the covering member in a state where the center of gravity of the covering member is separated further from the cover portion than the rotating shaft of the member side, and where the covering member covers at least a portion of the exposed portion within a movement range of the opening and the closing of the cover portion.

Abstract: A lens array including: a plurality of imaging portions arrayed in a first direction; wherein each of the plurality of imaging portions includes a first optical system configured to form an intermediate image of an object and a second optical system configured to re-form the intermediate image of the object in a first cross section parallel to the first direction and a direction of optical axes of the imaging portions, and wherein in each of the plurality of imaging portions, an optical flux from an object height at which a light available efficiency becomes 90% is restricted by at least one of a first aperture surface of the first optical system and a second aperture surface of the second optical system, and the optical flux from an object height at which the light available efficiency becomes 10% is restricted by the aperture surface which restricts the optical flux from the object height at which the light available efficiency becomes 90%.

Abstract: An image sensor unit includes: a light source including a light-emitting surface that emits light; a substantially rod-shaped light guide including a light emitter that linearizes the light from the light source and irradiates a sheet; an image sensor that receives light from the sheet and converts the light into an electric signal; a light condenser focusing the light from the sheet onto the image sensor; a circuit board on which the light source and the image sensor are mounted; and a frame accommodating the light guide, the light condenser and the circuit board. The light condenser and the light emitter of the light guide are disposed substantially parallel to each other. The center line of the light-emitting surface of the light source is disposed nearer the optical axis of the light condenser than the center line of the light emitter.

Abstract: An image-reading system that includes a plurality of image-reading apparatuses each including a document reading start instructing unit, and an information processing terminal connected to the image-reading apparatuses, wherein each of the image-reading apparatuses includes a detecting unit that detects that a user operates the document reading start instructing unit, a reading unit that reads a document when the detecting unit detects the operation of the user, and an image file transmitting unit that transmits an image file of the document read by the reading unit to the information processing terminal.

Abstract: Disclosed are embodiments of document scanner, a method and a program storage device wherein the scan mode is automatically adjusted to fall within standards established to prevent vision damage and/or discomfort and to still allow for high-resolution scanning. Specifically, the platen cover of the document scanner can be operatively connected to the scan carriage such that the mode at which the scan carriage operates depends upon the detected position of the platen cover. When the platen cover is closed, the scan carriage can automatically illuminate the document being scanned at a relatively high light intensity level and can move at a relatively fast speed. When the platen cover is opened, the scan carriage can automatically illuminate the document being scanned at a lower light intensity level and, optionally, can move at a slower speed to compensate for the lower light intensity level.

Abstract: An image reader is provided, which includes a first light emitting unit emitting light toward a first side of a document sheet in a predetermined reading area, a second light emitting unit emitting light toward a second side of the document sheet in the predetermined reading area, a first light receiving unit receiving light emitted by the first light emitting unit and reflected by the document sheet and light emitted by the second light emitting unit and transmitted through the document sheet, and a controller that controls the first light emitting unit to emit light of a first color, controls the second light emitting unit to emit light of a second color, the first and second colors being mutually complementary colors, and controls the first light receiving unit to output read image data of the document sheet based on a light receiving result of the first light receiving unit.

Abstract: An image reading apparatus includes a fed original placing portion on which an original is placed, wherein the fed original placing portion is configured to be rotated; an feeding portion that feeds the original placed on the fed original placing portion; an image reading portion that reads an image of the original fed by the feeding portion; a discharging portion, disposed below the fed original placing portion, onto which the original with the image read by the image reading portion is discharged; an irradiation portion that irradiates the discharging portion with light; and a stopping unit that stops the irradiation of the light by the irradiation portion according to a rotation of the fed original placing portion.

Abstract: A document illumination device includes a light-conducting member in which is formed a base surface that extends along a lengthwise direction, an irradiation surface that extends along the lengthwise direction and is tilted in the widthwise direction relative to the base surface, and a side surface that extends in the lengthwise direction and connects the base surface to the irradiation surface; a scattering member that is provided opposing the base surface and the side surface and that scatters light emitted from the base surface and the side surface; and a light source provided opposing a lengthwise direction-end surface of the light-conducting member.

Abstract: An image forming apparatus includes: an image reading mechanism configured to read an image from a document; an image forming mechanism configured to print the image read by the image reading mechanism on a recording sheet; and an image inspection mechanism configured to read the image printed on the recording sheet in the image forming mechanism. The image reading mechanism and the image inspection mechanism each include: a light source configured to irradiate a reading target with light; and a solid-state image sensing device on which reflected light from the reading target is made incident, and configured to perform photoelectric conversion operation. Light emitting members forming the light sources of the image reading mechanism and the image inspection mechanism have the same spectral characteristics.

Abstract: An image sensor unit has a light emitting module and a light guide that guides light emitted by the light emitting module to a bill, the light guide has an incident surface on which the light emitted by the light emitting module is incident, a reflection surface that reflects the light having entered the light guide through the incident surface, and an emission surface from which the light reflected by the reflection surface is emitted toward the bill, and the reflection surface is formed by a plurality of contiguous flat surfaces.

Abstract: An image reading apparatus includes a light source, a reading unit, a moving unit, a moving speed control unit, a turn-ON time control unit. The light source irradiates light onto a document. The reading unit receives light reflected from the document, converts the received light into electrical charges, and accumulates the electrical charges as an image signal. The moving unit relatively moves the light source and the document. The moving speed control unit controls a moving speed of the moving unit in accordance with a reading mode of the image reading apparatus to control a reading speed in the reading unit. The turn-ON time control unit controls the light source to be turned off in a given period based on the reading mode when the reading unit accumulates the electric charges so as to prevent the electrical charges accumulated in the reading unit from reaching a saturation amount.

Abstract: A pupil splitting lens that splits a pupil of a light beam from a deflector into a plurality of light beams in a main scanning direction of the deflector and a pupil splitting lens that splits the light beam into a plurality of light beams in a sub-scanning direction are disposed relative to a light detection element. The light detection element detects image forming positions of the four light beams formed as a result of the splitting by the plurality of pupil splitting lenses. A CPU determines the amount of focus shift and the amount of image forming position shift from these four image forming positions.

Abstract: An image reading apparatus includes an array substrate in which a plurality of point light sources is mounted along the main scanning direction, a light guide member disposed on a surface of the array substrate that mounts the plurality of point light sources, and guiding light from the plurality of point light sources to the document surface, a frame for fixing the light guide member and the array substrate, a positioning unit that determines the positional relationship of the frame with the light guide member and the array substrate in a configuration in which the incident surface of the light guide member is in proximity to or in contact with the plurality of point light sources; and an image reading unit that uses reflected light when illuminating light from the plurality of point light sources through the light guide member onto the document surface to thereby read the document image.

Abstract: An illuminating device capable of stably illuminating an irradiated object such as a document while suppressing light loss with a simply structure is provided. An LED array (71) and a reflective plate (73) are disposed sandwiching a slit (St) through which light reflected by a document MS passes and a light-guiding member (72) is disposed on the side of the LED array (71). The light-guiding member (72) includes a direct emission unit (77) disposed between an illumination range y centered on a document reading position and the LED array (71) and an indirect emission unit (78) disposed between the reflective plate (73) and the LED array (71), a light incidence face of the direct emission unit (77) and a light incidence face of the indirect emission unit (78) are disposed at mutually different position around the LED array (71), and the LED array (71) is disposed on a side of an interior angle formed by the light incidence faces.

Abstract: A scanner device according to one aspect of the present disclosure has a first mode for reading a normal object placed on a document table, and a second mode for reading a self-luminous object placed on the document table. The scanner device has a light detecting portion and a control portion. The light detecting portion detects light of an object placed on the document table. The control portion switches the reading mode between the first mode and the second mode on the basis of a detection result of the light detecting portion.

Abstract: A scanner device according to one aspect of this disclosure includes a document table, a light detecting portion, and a control portion. The light detecting portion detects light from an object placed on the document table. The control portion adjusts reading sensitivity for the object on the basis of a detection result of the light detecting portion.

Abstract: An image reader includes a light source that irradiates light to a recording material on which an image is formed, a generation section that receives light reflected from the recording material and generates image information from the received light, and a processing section that extracts information corresponding to a window region of the recording material set in advance, as correction information, from the image information generated by the generation section when light from the light source is irradiated to the recording material on which the image is formed.

Abstract: An image reading apparatus includes an ADF driven by a motor; an image reading unit transmitting charges accumulated in a photoelectric conversion element as a shift pulse to a shift register; and a shift pulse control unit controlling an output timing of the shift pulse based on rotation of the motor. When the rotation of the motor stops, the shift pulse control unit outputs the shift pulse to transmit the charges accumulated in lighting of a light source immediately before the stoppage of the motor.

Abstract: An electrophotographic image forming apparatus including a light scanning device to scan first and second light beams, a synchronization signal detector to receive a portion of the first light beam scanned by the light scanning device and to generate a first horizontal synchronization signal, and a video signal processor including a second horizontal synchronization signal generating unit to count a synchronization signal offset and generate a second horizontal synchronization signal regarding the second light beam when the first horizontal synchronization signal is transmitted from the synchronization signal detector, and a video controller to transfer video data to the light scanning device based on the first and second horizontal synchronization signals.

Abstract: An image reading apparatus includes a reading unit, a controlling unit and a changing unit. The reading unit receives a reflected light from a sheet onto which a light is irradiated from a light source, converts the received light into an image signal, and accumulates a charge corresponding to the image signal in accordance with a reading time of the sheet. The controlling unit controls the light source to be turned off in accordance with a reading mode of the sheet so that an amount of the accumulated charge does not reach a saturated amount. The changing unit changes an amplification factor of an amplifying unit in accordance with a turn-off time of the light source to amplify the image signal to a predetermined level when the controlling unit controls the light source to be turned off. The amplifying unit amplifies the image signal at a predetermined amplification factor.

Abstract: An overhead image-reading apparatus includes a one-dimensional image sensor having imaging elements arranged in parallel to each other and is configured to change an angle between an optical axis of a light source and a medium to be read during reading of the medium, and the apparatus includes a correcting unit that corrects distortion in a main-scanning direction in read image data of the medium read by the apparatus.

Abstract: An imaging system is provided, including a detection unit and a scan unit. The detection unit senses radiation of a target area. The scan unit directs the radiation to the detection unit, in which the scanning unit scans the target area N times at a constant speed within a scan period, such that each of the pixels of the target area is scanned N times by the scan unit, thereby the detection unit generates N sub-detection values for each of the pixels and adds the N sub-detection values up to generate a detection value for each of the pixels.

Abstract: An illumination apparatus for use in an image reading apparatus that forms a reduction image of a read area of an original on an image pickup element by an imaging optical system, includes: a light source illuminating the original; and a light guide guiding light to the original; wherein the light guide has a first surface on which light is incident or that diffuses light, a second surface from which light exits toward the read area, and a third and fourth surfaces arranged between the first and second surfaces in a sub-scanning section perpendicular to a longitudinal direction of the light guide, the third surface arranged on a side closer to an optical axis of the imaging optical system, and the fourth surface arranged on a side farther from the optical axis, wherein the third and fourth surfaces are reflective surfaces having the same paraxial power which is appropriately set.

Abstract: In an illuminating apparatus including a plurality of rows of light source groups each having a plurality of light-emitting elements for irradiating light to an original that are arranged in a main scanning direction, the light-emitting elements in the plurality of rows of light source groups illuminate an irradiated face of the original at the same pitch within the same light source group and at different pitches from each other among the plurality of rows of light source groups.

Abstract: An image processing apparatus determines a direction of document placement relative to a scanning direction based on a direction of a shadow region in an input image when a line sensor having a light receiving element performs a scan and an image read from a book document by a reading apparatus is input. When the direction of the binding portion of the document is determined to be along a longitudinal direction of the line sensor, an image of a region read by the light receiving element of the line sensor from reflected light undergoing specular reflection from the document is detected based on the amount of variation in luminance between adjacent pixels in the read image of the book document. Luminance of the image corresponding to the region is corrected.

Abstract: A method of scanning a document uses a document scanning device having a case which defines a cavity and has a docking location on a first side and a document platform on a second opposed side. The method includes steps of inserting an electronic image capturing device into the docking location, inserting a document to be scanned onto the document platform, activating a camera on the electronic image capturing device, and capturing an image of the document. Once the document image has been captured, the method may also include a further step of transmitting the image to another location, using a communications network.

Abstract: A light guide member includes a main body part, and an entrance surface, a strip-shaped exit surface and a strip-shaped reflecting surface that are formed on the main body part. The illumination light is output from the exit surface. The reflecting surface extends in the first direction on a face placed opposite to the exit surface of the main body part and reflects the illumination light. The reflecting surface includes, on a flat face, a reflection pattern surface provided with a plurality of minute reflective concave parts having a function of reflecting the illumination light toward the exit surface. The reflective concave parts each include a deflection surface which deflects the illumination light in a direction in which a reflection angle widens in a cross sectional view in a second direction that is orthogonal to the first direction in a horizontal direction, and then reflects the illumination light.

Abstract: In a collimator lens, in a case where divergent light emitted from a position P1 at a distance S1 from a second face enters the second face and imaging is performed at a position P2 at a distance S2 from a first face, in a temperature range of 0° C. to 60° C. and in a range of the emission wavelength of the light source which changes within the temperature range, and when a minimum value of a wavefront aberration of an image, which is generated at the position P2 by the divergent light emitted from the position P1 in a range of 0<S1/S2?50, is WF1, and when a minimum value of a wavefront aberration of an image, which is generated at the position P2 when parallel light satisfying S1=? enters the second face, is WF2, a relationship of WF1<WF2 is satisfied.

Abstract: An optical scanning apparatus includes a light source, rotational polygonal mirror, correction data calculating unit, modification computing unit, and adjustment unit. The adjustment unit adjusts drive current supplied to the light source using the correction data calculated by the correction data calculating unit when a first of a plurality of modes is selected or using the correction data calculated by the modification computing unit when a second of the plurality of modes is selected.

Abstract: An image reading device having an improved shading compensation capability and a method thereof are disclosed. The image reading device includes an automatic document feed unit to deliver documents along a document delivery path. A light source unit including a light source to illuminate a first criterion image at a first position within the image reading device, and to illuminate the documents delivered by the automatic document feed unit at a second position. The image reading device further includes a second criterion image arranged to opposingly face the light source unit when the light source unit is located at the second position. The second criterion image extends along a sufficient length to cover the scanning range of the light illumination by the light source unit along a main scanning direction.

Abstract: In an image forming apparatus for making a position deviation correction, a position deviation amount can be accurately calculated by stabilizing the detection result at position deviation detecting and considering an ideal correction amount and an actual correction amount to make the position deviation correction accurately. A forming unit forms a pattern for position deviation detection without making the position correction for less than one pixel by an image position correcting unit, to a pattern formed in the vicinity of a detection region of a detecting unit, and the position deviation amount is calculated by using a value of a position correction which is not made to the pattern for position deviation detection to be formed.

Abstract: An optical scanner includes: a light reflecting section having light reflectivity; a movable section which includes the light reflecting section and can be displaced; two link sections connected to positions of ends of the movable section, the positions facing each other; a supporting section supporting the link sections; and a displacement providing section turning the two link sections, wherein each link section includes a turnable drive section, and a shaft section connecting the movable section and the drive section and bending in a thickness direction of the movable section by turning of the drive section.

Abstract: A light-source control device includes a light source including a first light emitter for emitting light and a second light emitter for emitting light due to the light emitted by the first light emitter; a constant current unit configured to maintain a current constant that is input via the light source from a power supply; a switching unit configured to switch the current to be input to the constant current unit at a designated duty ratio and cycle; and a control unit configured to control the current applied to the light source so that a rise transition time and a fall transition time of the current applied to the light source are nearly equal to each other.

Abstract: Provided is a reading apparatus that includes a light source that emits a light to a source material and an image pickup element that receives the light reflected by the source material, to thereby read the source material. The image pickup element is disposed so as to move to a plurality of positions at each of which the image pickup element is oriented at a different angle with respect to a surface to be read of the object to be read, and to perform reading at the plurality of positions. The reading apparatus compares read values obtained by the image pickup element at the plurality of positions to thereby decide a property of an image expressed on the object to be read.

Abstract: An image reading apparatus, an image reading method and a program are provided for favorably correcting color misalignment in a sub-scanning direction of a read signal read by a plurality of line sensors without increasing a circuit scale or processing time. To accomplish this, the image reading apparatus sets, as a reference signal, the read signal that is output from one of the plurality of line sensors, and detects a correlation between the reference signal and each of a plurality of read signals output from line sensors other than the one of the plurality of line sensors of a plurality of lines that are displaced in predetermined line units from a line from which the reference signal is read, and selects a read signal having a high correlation with the reference signal as a read signal from the line of the reference signal.

Abstract: Provided is a reading apparatus that includes a light source that emits a light to a source material and a plurality of image pickup elements that each receive the light reflected by the source material, to thereby read the source material. The plurality of image pickup elements are each located at different positions and each mounted at different angles with respect to a surface to be read of the source material. The reading apparatus compares read values acquired from the image pickup elements, so as to decide the property of the image expressed on the source material.

Abstract: An image correction method is applied to a scanner device. The scanner device includes a main case, a drive module, an optical module, an analog-to-digital converter, a first-in and first-out data buffer, a data flow control unit, a set unit, a data classification unit and a memory storage unit which are electrically connected and assembled in the main case. The scanner device executes a program statement set by the set unit in the memory storage unit to get values for building an update shading table. The scanner device utilizes the update shading table to compensate pixel values corresponding to red, green and blue light of each scanned line of an image for doing a luminance compensation of image pixels corresponding to the red, green and blue light of each scanned line of the image so as to complete an image correction of each scanned line of the image.

Abstract: Provided is an image scanning unit which makes it possible to improve scanning accuracy while also making the overall body thinner by appropriately positioning a plurality of reflection members within an effective space in a carriage frame without wasting space.

Abstract: A plurality of line sensors corresponding to a plualrity of color components receive reflected light passed through an imaging unit and convert the light into a plurality of color component data. A correcting unit performs color misalignment correction based on a reference color component for which resolution performance is lowest among the plurality of color component, on the color component data corresponding to other color components.

Abstract: An imaging device including a base and an enclosed chamber positioned on the base. The enclosed chamber has a scanning surface inclined with respect to the base, a reflecting member positioned opposite to the scanning surface and an imaging member adjacent the scanning surface and oriented towards the reflecting member. The imaging member is illuminated with a red, a green, a blue, and an additional color LED. In one embodiment the additional color is a color other than red, green, and blue. In an alternate embodiment the additional color is Ultraviolet (UV) or Infra-Red (IR).

Abstract: Disclosed is an image forming apparatus including a plurality of components, a display section to display information of the components, a storage section to store replacing person information of the components and a control section to make the information of the components which are displayed in the display section be different according to the replacing person information of the components.

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.