Abstract: An insulator (12), which is provided between a lower electrode (11) by patterning a substrate and a counter electrode (15), defines a light emitting area by covering on ends of the lower electrode (11). The light emitting area (13) has a shape of which edges in a first direction of the substrate are defined by at least the insulator (12) and other edges in a second direction on the substrate different from the first direction are defined by one of the lower electrode (11) and the counter electrode (15). A plurality of the light emitting elements is placed independent electrically in the second direction on the substrate, whereby a light emitting array and an exposure apparatus is formed.

Abstract: An optical sensor includes a light-emitting element for directing light to an image, a light-receiving element for receiving light reflected by the image, a normal detection optical path for allowing the light emitted by the light-emitting element and the light reflected from the image to follow a normal detection optical path during normal operation, a calibration reflecting plate disposed inside the optical sensor for reflecting light from the light-emitting element when sensitivity is calibrated, a calibration optical path for allowing the light emitted by the light-emitting element to follow a calibration optical path to the light-receiving element when the emitted light is reflected by the calibration reflecting plate, and a first optical function element disposed in the calibration optical path and switchable between a light permeating state, in which the light passes therethrough, and a light intercepting state, in which the light is blocked, when voltage is applied.

Abstract: Disclosed is a scanning optical module, which includes a light source, a rotatable multifaceted mirror adapted to scanningly deflect a scanning beam emitted from the light source, in a given direction, a driving device adapted to drivingly rotate the rotatable multifaceted mirror through a shaft thereof, a plate-shaped member formed with a driving device-mounting portion mounting thereto the driving device in such a manner as to absorb heat generated in the shaft, an air blower adapted to generate an airstream, and an airstream passage-defining member adapted to direct the airstream from the air blower, toward the driving device-mounting portion of the plate-shaped member.

Abstract: A device as well as method for deactivating without developing an exposed lithographic printing plate is disclosed. The device comprises a structure for providing a deactivating agent that is capable of deactivating without developing the plate. The plate comprises on a substrate a photosensitive layer capable of hardening upon exposure to a radiation, and becoming incapable of or having reduced rate of hardening after contacting with a deactivating agent. The deactivated plate is safe or has better stability at room lighting, and can be handled under room lighting before and during development. The development can be on press with ink and/or fountain solution or off press with a liquid developer.

Abstract: An optical unit includes an optical element having a first combining surface and a second combining surface that applied an adhesive that is cured when exposed to a curing light respectively and that have different transmittance of the curing light; and a mount member combined with the optical element by the adhesive. The adhesive is cured when exposed to the curing light.

Abstract: The exposure apparatus is provided with: plural light emitting elements that are arranged in a line; a substrate that the plural light emitting elements are arranged thereon; plural temperature measuring units that are arranged along the arrangement direction of the plural light emitting elements and measure temperatures of the substrate on which the plural light emitting elements are arranged; and plural heating units that are arranged along the arrangement direction of the plural light emitting elements and heat the substrate on the basis of the temperatures measured by the temperature measuring units respectively.

Abstract: A writing device to write an image onto a photoconductor, including a print head having plural LEDs, a first supporting member, having a position determining section to determine the position of the print head, and an adjustment screw, and a second supporting member, having a reference shaft which comes into contact with the first supporting member and movably supports the first supporting member while moving to or separating from the photoconductor, and a pressuring member which presses the first supporting member against the reference shaft, wherein the second supporting member is engaged with the first supporting member by the adjustment screw, whereby when the adjustment screw is rotated, the print head is shifted along with the first supporting member, and a first direction joining the position determining section and the adjustment screw makes a right angle with a second direction joining the adjustment screw and the reference shaft.

Abstract: A semiconductor device includes a substrate; a first conductive type semiconductor layer disposed on a main surface of the substrate; a second conductive type semiconductor layer disposed on the first conductive type semiconductor layer; a plurality of light emitting elements; and a second conductive side wiring pattern for commonly connecting the second conductive type semiconductor layer in the light emitting elements arranged adjacently. The second conductive type semiconductor layer includes a first conductive type semiconductor connection surface and a second conductive type semiconductor connection surface between the first conductive type semiconductor layer.

Abstract: An image-drawing device, which carries out image-drawing on the basis of image-drawing data, has image-drawing heads which are moved relatively in a predetermined scanning direction along an image-drawing surface. The image-drawing heads have a large number of image-drawing elements lined-up two-dimensionally within a plane which is parallel to the image-drawing surface. The straight lines along which the plural image-drawing elements are lined-up are inclined, with respect to the scanning direction, at a predetermined inclination angle such that an image-drawing magnification has an effective value after a decimal point. A data allocating unit allocates the image-drawing data to the respective image-drawing elements at predetermined timings corresponding to a resolution determined in accordance with the image-drawing magnification.

Abstract: A mounting structure for an inverter circuit board for a light source lamp of an image reader in which mounting means for mounting the inverter circuit board for a light source lamp of an image reader onto a carriage is located to be operated from the direction in which the carriage moves in one embodiment. The inverter circuit and heat dissipation plate are removably mounted to an end of the full rate carriage. In another embodiment, the circuit board is mounted to the top for access from above the carriage.

Abstract: In a contact type image sensor including an illumination section including a light source and light guide to illuminate a document, an image sensing element for converting an optical image of the document into an electrical signal, a cylindrical rod lens for forming an optical image on the image sensing element, and a frame for integrally holding the illumination section, image sensing element, and cylindrical rod lens, the light guide has undergone antireflection treatment on a surface thereof on the document side.

Abstract: An apparatus for reducing start-up time uses an auxiliary light source and method for the same are proposed. The auxiliary light source has relatively short start-up time to compensate a cold cathode fluorescent lamp (CCFL) with long start-up time. The auxiliary light source is a light emitting device and simultaneously turned on with the CCFL. The light-emitting device is turned off when the output light of the CCFL is stable. Therefore, the light-emitting device with the CCFL can provide stable light source for scanner.

Abstract: An image reading apparatus for imaging an original document or photographic film includes an original placement bed on which to place the original, and a reading device to form an image of the original. A transparent original adapter, detachably connected to the image reading apparatus, includes a delivery device that moves the original along an original placement plane of the original placement bed. The transparent original adapter also includes a lighting device that illuminates the original as the reading device forms the image of the original. A film position adjustment device adjusts the original away from the original placement plane when the original is moved, and against the original when the image of the original is read by the reading device.

Abstract: The present invention is directed to a system and method which capture images by use of an optical detector. The system and method illuminate a scan region utilizing a bulb that emits light of greater intensity near its extremities than at its center to provide image light to an optical detector via an optical reduction component.

Abstract: A light source using electroluminescence layers of which width and thickness are adjusted so that emission luminance does not depend on the position on the layer. Also, a light source using red, green and blue electroluminescences light media for a color source of which the width and thickness are so adjusted that the required emission luminance can be obtained from electroluminescences for the respective colors. In light sources using electroluminescence not adjusted in width and thickness as light medium, emission luminance is different from position to position, especially in the direction along the longitudinal direction.

Abstract: An image reader apparatus for lighting a manuscript surface of a manuscriptin a line state, and for image-forming a reflection light from a reading part of the manuscript surface lighted in the line state, to an image sensor, by an image forming lens which forms a part of a scaled down optical system so that an image of the manuscript is read, includes an irradiation opening part and an optical element. The irradiation opening part is for irradiating a lighting light to an outside part, which is formed at the light source. The optical element for attenuating a light amount so as to be permeated, which is provided between the irradiation opening part and the manuscript stand.

Abstract: A light source lamp socket of an image reader is formed to be capable of being placed as close to a platen glass as possible to increase the intensity of light beams to be irradiated on a original. A part of each of lamp socket attached on the both ends of a lamp tube of a light source lamp, which faces a platen glass, is cut-away into the shape of one or more flat surfaces such that a part of the lamp tube is exposed from a part of such a flat portion. Therefore, the light source lamp can be move closer to the platen glass a distance corresponding to the depth of the cut-away section of the lamp socket.

Abstract: Provided are an electrophotographic method and an electrophotographic apparatus that can reduce ghost memory latent in an a-Si photosensitive member, relieve potential unevenness, and provide image copies with high quality. In an electrophotographic process of forming a toner image at least through decharging of a photosensitive member as a recording element, charging, exposing, developing, and transferring, at least a light-receiving layer of the photosensitive member is comprised of an amorphous material; a latent image is formed by the exposing with a light; the light has such a peak wavelength in an emission spectrum as to make minimum a value of optical memory at a unit contrast potential; and the decharging is implemented by use of a light having a full width at half maximum of a peak in an emission spectrum of not more than 50 nm.

Abstract: An image reading device includes a feeding cable which connects a voltage applying part and a light source, and includes a conductive cable with an outer circumference covered with an insulating film. A first portion at one end side of the feeding cable is held by a first feeding cable holding member fixedly arranged in a vicinity of the voltage applying part. A second portion at the other end side of the feeding cable is held by a second feeding cable holding member attached to a first moving carriage that carries a light source and a first mirror. A portion of the feeding cable between the first and second feeding cable holding members is wound around a pulley in a U-shape. The pulley moves integrally with a second moving carriage that carries second and third mirrors.

Abstract: An image forming apparatus including a photoreceptor including a photosensitive layer on a surface of an electroconductive substrate and a light irradiator configured to irradiate the photoreceptor with a light beam having a wavelength &lgr; represented in units of micrometers and a diameter &phgr; represented in units of micrometers to form a dot latent image on the photoreceptor, wherein a maximum height in a part of a profile of the lower surface of the photosensitive layer in a sampling range of &phgr; is not less than &lgr;/(2n), where n is a refractive index of the photosensitive layer at the wavelength &lgr;.

Abstract: An electrophotographic photoconductor has an electroconductive support, and a charge generation layer and a charge transport layer successively formed on the electroconductive support, the charge transport layer allowing any monochromatic light with a wavelength in a wavelength region of 390 to 460 nm to pass through and exhibiting a fluorescence generation coefficiency of 0.8 or less when irradiated with the monochromatic light. An electrophotographic image forming apparatus and a process cartridge employ the above-mentioned photoconductor.

Abstract: A method of electrostatic recording on a cylindrical photoreceptor with a dielectric coating of a photosemiconductor layer is presented. The method includes such main operational steps as charging, exposure and illumination of the photoreceptor, wherein the exposure is carried out by means of optical image scanning along a helix line. This method provides for use of the electrophotography for production of PCBs and printing matrices.

Abstract: It is decided whether or not a light exposure lamp 5 burns out by comparing a light receiving output of a CCD 10 involved when a light exposing position of a light exposure lamp 5 corresponds to a white color reference sheet 13 with an initially set value.

Abstract: The object of the invention is to provide an electro-photographic photoreceptor which has high sensitivity to long wavelength light to form a less defective image and exhibits a sufficient electrical charging property at the first rotation of the receptor to rapidly form an image. The electro-photographic photoreceptor is constructed by laminating an intermediate layer, a charge generation layer and a charge transport layer in order on a conductive support. The intermediate layer contains an adhesive resin, a carboxylic acid salt of the following structural formula (I), and titanium oxide. The content of the carboxylic acid salt is in a range of 0.5-5 weight % and that of titanium oxide in 10-50 weight % for the total amount of the intermediate layer.(R(COO).sub.k).sub.m A.sub.n (I)wherein R is a straight, branched or cyclic, saturated or unsaturated, and mono- to tetra-valent hydrocarbon group; A is an alkali metal or alkaline earth metal; and k, m and n each represent an integer of 1-4.

Abstract: In an image reading apparatus provided with a light source for illuminating an original, the light source includes a fluorescent lamp having a tube surface by means of which a part of a beam of light therefrom is condensed on the surface of the original by the optical action thereof, a line sensor for reading image information of the original and an optical device for causing image information of the original illuminated with the beam of light from the light source to be imaged on the line sensor.

Abstract: An image scanner arrangement having a scanner, a document feeder scanning portion and a flat scanning bed. A single white plate is provided between the document feeder scanning portion and flat bed. Before scanning, the scanner scans the white plate to provide image data for testing. If this image data contains white pixels not less than 90%, a controller determines that a lamp of a light source of the scanner illuminates appropriately. After confirming that the light source is in a good condition, the scanning starts. The single white plate is utilized regardless of scanning being performed with the document feeder scanning portion or the flat scanning bed.

Abstract: An illumination compensation device of a scanner for balancing the light intensity on the optic-electric sensor of the scanner and facilitating the connection of the power wires and power supply. The device includes at least one curved light source having a curved middle portion and two bent ends whereby the light intensity on a whole optic-electric sensor can transfer images to electric signals without distortion, and the scanning quality is upgraded. In addition, both bent ends of the curved light source of the invention can facilitate the connection of its power wires and power supply.

Abstract: A device for illuminating an original for use in an original reading apparatus for reading an original placed on an original supporting table has a light source having a filament having its lengthwise direction disposed so as to be perpendicular to a reading line.

Abstract: A light source package includes a light source, a lens for collimating the light from the light source, and a support member for supporting the light source and the lens so that the optical axis of the lens is set to a desired position relative to the light source. The support member includes a compensating device for compensating the lens for deviation of the optical axis of the lens resulting from a difference in the coefficients of linear thermal expansion between the lens and the support member when the ambient temperature changes.

Abstract: An image forming apparatus includes an LED array head to which a vibration applying unit driven by a driver is attached. The LED array head is shifted by a predetermined amount in a direction at an angle .theta. relative to the axis of a photosensitive drum. LEDs are driven to emit the light in accordance with video data before and after the shift, and an electrostatic latent image according to the video data is formed on the photosensitive drum. Since the LED array head is shifted in a diagonal direction relative to the axis of the photosensitive drum, it is possible to form high-resolution dot lines in the axial direction even if the photosensitive drum is rotated at a constant speed.

Abstract: A light source mounted in a scanner adjacent to a platform thereof, including a lamp tube, the lamp tube having a straight middle section across the width of the scanner area within the platform, and two curved end sections respectively extended from both ends of the straight middle section at a contained angle, permitting light from the curved end sections and light from the straight middle section to overlap.

Abstract: A field controlled plasma discharge display element is disclosed for light source use in single element and multiple element plasma discharge electrostatic printers. The display element includes a pair of hollow discharge electric field electrodes, and a third electrode positioned external to and aligned with the discharge electric field electrodes for generating a control electric field proximate to the discharge electric field. The control electric field is used to control the intensity of the plasma discharge by distorting the shape of the generated discharge electric field. The single element plasma discharge device is modulated in accordance with the image to be printed and the modulated output is scanned across the photoconductive surface to produce the latent image.

Abstract: In an electrophotographic process using an electrophotographic photoconductor having a photoconductive layer which contains a charge generation material and a charge transport material, the charge transport material being convertible from a neutral state into a charged state during the photoconduction in the photoconductive layer, when light is applied to the photoconductive layer, there is employed at least one type of rays of light selected from type 1 which has a light emission peak, and type 2 and type 3, each of which has a continuous spectrum with a threshold wavelength value, in such a manner that a half-width wavelength range of type 1 does not overlap a peak wavelength or a half-width wavelength range of an absorption peak of the charge transport material in the charged state, and a half value of a threshold wavelength value of each of type 2 or type 3 is beyond the wavelength or a half-width wavelength range of any of extreme end absorption peaks in terms of the wavelength of the absorption light of

Abstract: An exposing apparatus having exposing function for irradiating light and scanning an original, function for detecting a reflected light from the original, function for setting the exposing function so as to repeat a plural times of the exposing/scanning same one of the original, function for calculating out a amount of the reflected light every one of the plural times of exposing/scanning when the setting function sets the plural times of exposing/scanning, and function for determining a malfunction of the exposing function by means of referring of the amount.

Abstract: A lens plate is provided with many lenses, and a base plate is provided with many LED arrays and driving ICs arranged at respective opposite ends of the base plate. The lens plate and the base plate are positioned in place relative to each other by spacers. The base plate has a thermal conductive layer and a thermal preserving layer over the layer. Grooves are formed in the preserving layer between the driving ICs and the LED arrays.

Abstract: A fluorescent light source includes a fluorescent lamp, lamp bases attached to opposite ends of the fluorescent lamp, and an electrically insulating substrate connected to the fluorescent lamp. A heating element is positioned on the fluorescent lamp, and a first and second pair of power traces are formed on the electrically insulating substrate. The first pair of power traces are connected to the heating element to provide power thereto. The second pair of power traces are connected to a pair of electrical conductors that provide power to the fluorescent lamp. This fluorescent lamp can be used in a replaceable fluorescent light source unit for a document scanner. The replaceable fluorescent light source unit includes a housing, lamp base receiving members attached to the housing, and registration notches to properly align the fluorescent lamp.