Abstract: An exposure head, includes: a substrate that is provided with a first light emitting element, a second light emitting element that is arranged at one side of the first light emitting element in a first direction and a third light emitting element that is arranged at the one side of the second light emitting element in the first direction, the first light emitting element and the second light emitting element being arranged at a first distance from each other in the first direction, the second light emitting element and the third light emitting element being arranged at a second distance, which is different from the first distance, from each other in the first direction; and an imaging optical system that images light from the first, the second and the third light emitting elements.

Abstract: A method for arranging print head chips, includes: (a) setting a first fiducial mark and a second fiducial mark on a PCB for determining coordinate positions of a plurality of array units that are arranged on the PCB and calculating a print range of the array units, wherein each array unit has a plurality of spots that are transversely arranged from the first one of the spots to the last one of the spots in sequence; (b) setting a third fiducial mark as a start point for arranging the first spot of a first array unit of the array units on the PCB; and (c) arranging other array units on the PCB in sequence according to the coordinate positions and the start point.

Abstract: An image forming apparatus is capable of forming a clear image by using laser beams projected from a plurality of laser light sources. The image forming apparatus forms an electrostatic latent image on a medium to be scanned by laser beams, which are projected from a plurality of laser light sources and periodically deflected by a rotational deflecting unit, so that the laser beams scan the medium, which is uniformly charged and moving in a sub-scanning direction, in a main-scanning direction perpendicular to the sub-scanning direction. A pixel clock generating unit generates pixel clocks, which are used for controlling timings of projection of the laser beams, separately for each of the laser light sources, and for performing a phase change of each of the pixel clocks; and a phase control unit that controls independently each of the pixel clocks.

Abstract: A line head, includes: a head substrate that includes a first light emitting element and a second light emitting element; and a lens array that includes a first positive lens that images a light emitted from the first light emitting element on a specified plane and has a lens surface of a free-form surface, and a second positive lens that images a light emitted from the second light emitting element on the specified plane and has a lens surface of a free-form surface, each of the lens surfaces of the first and the second positive lenses having focal points with different focal lengths.

Abstract: There is provided a method for controlling a line head including a focusing optical system, first light emitters, light from which being focused by the focusing optical system, second light emitters disposed next to the first light emitters in a first direction, light from the second light emitters being focused by the focusing optical system, and third light emitters disposed next to the second light emitters in the first direction, light from the third light emitters being focused by the focusing optical system. The method includes turning on the first light emitters at time t0, turning on the second light emitters after a period t1 has passed since the time t0, and turning on the third light emitters after a period t2 has passed since the time t0. The periods t1 and t2 are controlled under the following condition: t2?n×t1 (n is an integer two or greater).

Abstract: A method for arranging print head chips, includes: (a) setting a first fiducial mark and a second fiducial mark on a PCB for determining coordinate positions of a plurality of array units that are arranged on the PCB and calculating a print range of the array units, wherein each array unit has a plurality of spots that are transversely arranged from the first one of the spots to the last one of the spots in sequence; (b) setting a third fiducial mark as a start point for arranging the first spot of a first array unit of the array units on the PCB; and (c) arranging other array units on the PCB in sequence according to the coordinate positions and the start point.

Abstract: Provided is a line head module including line heads on which a plurality of light emission elements are arrayed and exposing a photosensitive body by the light from the light emission elements, including: a support having a rotation axis parallel to the photosensitive body; and the plurality of line heads which are provided on the peripheral surfaces of the support and switched with respect to the photosensitive body by rotating the support about the rotation axis.

Abstract: A line head module includes a line head in which a plurality of organic EL elements is arranged, a lens array made by arranging lens elements that form an image of light from the line head. A first chamber formed on the side of the lens array of the line head is sealed.

Abstract: Systems and methods are provided for detecting process direction registration errors in a printer. The errors are detected by analyzing a metric of a dash minimum response obtained from a test pattern. The test pattern contains dashes. At least one dash is shifted in the process direction in relation to another dash.

Abstract: An electro-optical apparatus including: an electro-optical panel on which a plurality of electro-optical devices are arranged; a focusing lens which focuses light emitted from the electro-optical devices; an optically transparent spacer which is interposed between the electro-optical panel and the focusing lens and contacts the electro-optical panel and the focusing lens; and a frame which has a first facing surface facing a first surface which is a surface of the spacer on the side of the focusing lens, wherein the first surface contacts the first facing surface.

Abstract: An image forming device includes: an exposure head having a plurality of light emitting elements arranged in a first direction, a first imaging optical system adapted to image light emitted from the light emitting elements, and a second imaging optical system disposed in a second direction with respect to the first imaging optical system; a latent image carrier movable in the second direction; a detection section adapted to detect a moving time the latent image carrier takes to move from a first position to a second position in the second direction; and a control section adapted to control the time from emission of a first part of the light emitting elements adapted to emit light to be imaged by the first imaging optical system to emission of a second part of the light emitting elements adapted to emit light to be imaged by the second imaging optical system based on the detection result of the detection section, thereby aligning a latent image formed on the latent image carrier by the first imaging optical sy

Abstract: An image forming device includes a display panel for exposing a photosensitive recording medium to light. The display panel includes a light transmissive substrate, and a plurality of light emitting elements provided on the substrate. The substrate includes a first surface for facing the photosensitive recording medium, a second surface which is opposite from the first surface, and thickness T defined as spacing distance between the first surface and the second surface. The plurality of light emitting elements is provided on the second surface to be spaced from each other. When refractive index of the substrate is expressed by n and minimum spacing distance between the plurality of light emitting elements is expressed by S, the thickness T satisfies the following inequality: T ? S ? n 2 - 1 2 .

Abstract: A line head, includes: a head substrate; a first light emitting element group which is arranged on the head substrate and includes a first light emitting element and a second light emitting element; a second light emitting element group and a third light emitting element group which are arranged in a first direction on the head substrate; a first wiring which is arranged between the second and the third light emitting element groups on the head substrate and is electrically connected with the first light emitting element; a second wiring which is arranged between the second and the third light emitting element groups on the head substrate and is electrically connected with the second light emitting element; and a connecting portion which is arranged on the head substrate and is electrically connected with the first and the second wirings.

Abstract: The present invention relates to a security element for security papers, value documents and the like, having a laser-markable transparent or translucent marking layer into which, through the action of laser radiation, visually perceptible identifiers are introduced in the form of patterns, letters, numbers and/or images. The identifiers each comprise a lamellar structure composed of a plurality of substantially parallel lamella that extend into the depth of the marking layer and include the parameters color, width, height, lateral orientation, tilt angle and/or spacing.

Abstract: At least one light emission array includes a plurality of light emitting elements arrayed in a first direction. Each of the light emitting elements is an organic electroluminescence element. A monitor quantitatively monitors a light emitting state of at least one of the light emitting elements to obtain a monitored amount. A comparator compares the monitored amount and a reference amount. A controller performs a constant current control with respect to at least one of the light emitting elements in accordance with a result of the comparison performed by the comparator.

Abstract: An anti-counterfeiting method and apparatus causes a first mark to be produced on an object such as a pill in a package and then causes a second mark to be produced on said object while also producing said second mark on the plastic package cover over said object. A first laser beam producing means produces a first laser beam, preferably in the IR spectrum, and produces said first mark on the object when the beam passes through said cover. A second laser beam producing means produces a second laser beam preferably in the UV spectrum. The second laser beam also passes through said cover and produces said second mark superimposed on said first mark on said object. The second mark is always different from said first mark. Continued passing of said second beam through said cover causes said cover cloud up and form said second mark on said cover also.

Abstract: A light emitting head for use in copiers or printers, the light emitting head having an illuminated length, e.g.

Abstract: A line head includes an element substrate having light-emitting elements arrayed thereon and a sealing substrate that seals the light-emitting elements on the element substrate. A recess is formed on a portion of the substrate where light emitted from the light-emitting elements exits, and the recess is formed to include an entire region immediately above at least the light-emitting elements.

Abstract: Cavity lasers exhibit a relatively high beam quality (e.g., M2<1.25) despite a relatively small cavity length (e.g., 50-53 mm) for a high (e.g., ?10 watt) output power device. This enables the construction of physically smaller laser and optical assemblies without sacrificing performance. Reduction of optical photonic interference, which can impair imaging performance, is also facilitated. Laser and optical assemblies may utilize an aperture defined within an optical barrier element to reduce the divergence of the light beam emanating from a diode-pumping laser.

Abstract: The image forming apparatus comprises: a first photosensitive drum; a second photosensitive drum; deflective scanning means for deflecting a laser beam and scanning by rotation; first laser irradiation means including a plurality of light emitting sources of laser beam for irradiating the first photosensitive drum, to irradiate the deflective scanning means with the laser; second laser irradiation means including a plurality of light emitting sources of laser for irradiating the second photosensitive drum, to irradiate the deflective scanning means with the laser beams; supporting means for supporting the first laser irradiation means and the second laser irradiation means; and a rotation supporting member for rotationally moving the first laser irradiation means, the second laser irradiation means and the supporting means integrally with respect to an axis generally parallel to the emanating axis of the laser beam to be emitted from the first laser irradiation means.

Abstract: A line head includes: a positive lens system having two lenses with positive refractive power; an image-side lens array in which the image-side lens of the two lenses is arrayed in a plural number in first and second directions; an object-side lens array in which the object-side lens of the two lenses is arrayed in a plural number in the first and second directions; a light emitter array in which a plurality of light-emitting elements are arrayed on an object side of the positive lens system for the one positive lens system; and an aperture plate that forms an aperture diaphragm, the aperture plate being disposed between the image-side lens array and the object-side lens array so that an image side is telecentric or approximately telecentric.

Abstract: An image forming apparatus utilizing a light-emitting diode (LED). The image forming apparatus includes: an LED head including an LED array that has a plurality of dots, in which a resolution a (dpi) of the LED array and a resolution b (dpi) in a main scanning direction at an image data exposure satisfy a relation: a>b (a being an integral multiple of b); and a lighting control unit that performs a lighting control for the LED head such that main dots used for an exposure are turned on in every {(a/b)?1} dots.

Abstract: In a line head, a plurality of light emitters are arrayed on a substrate in a first direction. Each of the light emitters is operable to emit a light beam. In a rod lens array, a plurality of rod lenses are arrayed in the first direction, and each of the rod lenses is adapted to focus the light beam emitted from an associated one of the light emitters onto a target surface. The substrate and the rod lens array are attached to a holder elongated in the first direction. Positioning members are provided at both end portions of the holder in the first direction. A relative position between the substrate and at least one of the positioning members is variable in a second direction perpendicular to the first direction.

Abstract: A line head includes a lens array having a plurality of positive lens systems in a first direction. Each positive lens system has a pair of lenses with positive refractive power. A light emitter array disposed on an object side of the lens array has a plurality of light emitting elements disposed corresponding to the positive lens systems. An aperture plate forms an aperture stop on the object side of the pair of lenses. A focal distance f1 of one of the pair of lenses disposed on the object side satisfies the conditional formula f1?d0/(1+W0/D1).

Abstract: An image forming apparatus includes a photoreceptor member; a LED head that includes a plurality of light emitting diodes arrayed in a line along a rotating axial direction of said photoreceptor member and that is modulated in response to image signals, so as to expose said photoreceptor member while said photoreceptor member is rotating; a deviation detecting sensor to detect deviations on a circumferential surface of said photoreceptor member; a filter to extract low frequency components including a rotational frequency component of said photoreceptor member from deviation signals detected by said deviation detecting sensor, so as to acquire deviation information with respect to said circumferential surface of said photoreceptor member; a driving section to move said LED head back and forth against said circumferential surface of said photoreceptor member; and a position controlling section to control said driving section, based on said deviation information acquired by said filter, so as to keep a distance

Abstract: A line head, includes a light-emitting element row, having a plurality of light-emitting elements arranged in a first direction; a plurality of feeding portions; a first power supply line for power supply, connected to a first feeding portion for a power supply of the feeding portions; and a second power supply line for ground, connected to a second feeding portion for a ground of the feeding portions. The light-emitting elements are respectively connected between the first power supply line and the second power supply line.

Abstract: A semiconductor apparatus includes a substrate; m electrically conductive layers formed on the substrate, m being an integer of 2 or more, potentials of the m electrically conductive layers being capable of being independently controlled; and semiconductor thin films having at least one semiconductor device respectively. The semiconductor thin films are bonded on surfaces of the m electrically conductive layers respectively.

Abstract: An image forming apparatus illuminates a pixel formation member with optical energy according to image data specifying a value for each pixel in the image. Some of the optical energy emitted to form a pixel is distributed over surrounding pixels; similarly, a pixel may receive peripheral optical energy that was emitted to form surrounding pixels. The amount of peripheral optical energy thus received is calculated, and the amount of optical energy emitted to form the pixel is adjusted to compensate for the peripheral optical energy, so that the total optical energy received by the pixel has the intended value. Image irregularities are thereby avoided, even if the image formation apparatus employs multiple light-emitting elements with different energy emission distributions.

Abstract: A line head, includes: a plurality of first substrates each of which includes a plurality of light emitting elements which emit light beams, a second substrate to which the plurality of first substrates are bonded, and an optical system which includes a plurality of lenses which focus light beams emitted from the plurality of light emitting elements toward an image plane, and in which a plurality of lenses face each of the plurality of first substrates.

Abstract: A light-emitting device has a plurality of pixel circuits arranged in one direction, each of the plurality of pixel circuits having a light-emitting element that emits light according to the amount of driving current, a driving transistor that supplies the driving current to the light-emitting element, a holding transistor that supplies a data signal supplied via a data line to the driving transistor, and a connecting line that connects the driving transistor to the holding transistor. The holding transistor, the light-emitting element, and the driving transistor are arranged in a direction crossing the arrangement direction of the plurality of pixel circuits. The light-emitting element is provided between the holding transistor and the driving transistor.

Abstract: Various exemplary embodiments include an electrostatographic printing apparatus and a method of correcting one or more associated uniformity profiles. In various exemplary embodiments the apparatus includes first and second actuators. In various exemplary embodiments the method includes measuring an image and generating at least one corresponding TRC, generating a charge profile, subtracting a reference patch density from a patch value to obtain a difference profile, converting the difference profile to a ROS intensity profile and an LED intensity profile, and iteratively repeating the steps of measuring, generating, subtracting and converting until within an acceptable range.

Abstract: A photosensitive member is movable in a first direction. A line head is provided with a plurality of organic-EL photo emitters, arrayed in a second direction perpendicular to the first direction to form a plurality of photo emitter arrays arranged in the first direction. A plurality of imaging lenses are arrayed in the second direction to form at least one lens array, so that an array of pixels defined on the photosensitive member are subjected to multiple exposure to light emitted from the photo emitter arrays in accordance with the movement of the photosensitive member, thereby forming an electrostatic latent image on the photosensitive member. At least one chromatic-aberration correcting lens is adapted to correct chromatic aberration of the imaging lenses relative to the first direction, and disposed between the photo emitter arrays and the lens array.

Abstract: A line head includes pixel circuits each of which has a plurality of light-emitting elements and circuit elements arranged in a line, and which allow the light-emitting elements to selectively emit light, based on selection signals and data signals; data lines that are arranged adjacent to the pixel circuits along one side of the pixel circuits and to which the data signals are supplied to the pixel circuits; and a selection circuit that generates the selection signals.

Abstract: A method for image generation on a recording material reduces the nonlinear spacing error between individual beams. In the method for image generation on a recording material, in which, in order to produce recording points on the recording material, individual radiation sources are used which are disposed along a line on a carrier material and in which the individual radiation sources are driven in accordance with an image and the individual beams are imaged onto a radiation-sensitive layer of the recording material. The spacing of the recording points on the recording material is set by length changes in the direction of the line being produced thermally in the carrier material.

Abstract: A line head, includes: a head substrate that includes a plurality of light emitting element groups as groups of light emitting elements; a lens array that includes a plurality of lenses each of which faces the corresponding light emitting element group in a first direction; and a light shielding member that is disposed between the head substrate and the lens array and includes a plurality of light shielding plates which are arranged side by side in the first direction while defining a space layer therebetween, wherein each of the plurality of light shielding plates is provided with a plurality of light guide holes penetrating in the first direction and facing the plurality of light emitting element groups in the first direction respectively, the plurality of light guide holes facing each of the light emitting element groups are arranged in the first direction respectively to form a plurality of light guide portions, and lights from the plurality of light emitting element groups are incident on the plurality o

Abstract: Provided is an exposure head, including: an array substrate having a plurality of organic EL elements arranged in an array on one face; and a plurality of circuit chips having a circuit for driving the organic EL element, and in which the forming face of the circuit is serially arranged along the extending direction of the array substrate so as to face one face of the array substrate; wherein the plurality of circuit chips are mutually serially connected by providing a pair of wiring groups for each mutual boundary location of the circuit chips on one face of the array substrate and outside the arrangement area of the organic EL element, bump-bonding one of the adjacent circuit chips to one end of the pair of wiring groups, and bump-bonding the other adjacent circuit chip to the other end of the pair of wiring groups.

Abstract: An exposure apparatus adopting an organic light-emitting diode (OLED) array as a light-emitting source is provided. The apparatus illuminates light beams emitted from a printing head disposed along the lengthwise direction of a photosensitive body to form an electrostatic latent image that corresponds to an image. The printing head has the OLED array in which a plurality of light-emitting sources are formed and a beam expander that focuses light beams such that exposure spots that correspond to a plurality of light beams emitted from the plurality of light-emitting sources are focused onto the photosensitive body to not overlap one another.

Abstract: Provided is an exposure head, including: an array substrate having a plurality of organic EL elements arranged in an array on one face; and a plurality of circuit chips having a circuit for driving the organic EL element, and in which the forming face of the circuit is serially arranged along the extending direction of the array substrate so as to face one face of the array substrate; wherein the plurality of circuit chips are mutually serially connected by providing a pair of wiring groups for each mutual boundary location of the circuit chips on one face of the array substrate and outside the arrangement area of the organic EL element, bump-bonding one of the adjacent circuit chips to one end of the pair of wiring groups, and bump-bonding the other adjacent circuit chip to the other end of the pair of wiring groups.

Abstract: The LED printer includes: a photosensitive drum; a resist roller for feeding a printing medium to the photosensitive drum at a first constant speed; a fixing device for discharging the printing medium from the photosensitive drum at a second constant speed; a separation type LED head arranged zigzag; and a printing control circuit for detecting a position of the printing medium fed by the resist roller or the fixing device and adjusting printing timings of the first portion LED head and the second portion LED head based on the detected position and the LED head interval. The LED printer can normally correct a print length in each of a front end region and a rear end region of a sheet.

Abstract: An apparatus and method for making a grayscale photo mask and a three-dimensional grayscale diffractive optical element operate as follows. A grayscale photo mask is obtained by exposing a laser direct write (LDW) glass material to laser beam radiation from a first laser beam of modulated power moved over a grid of discrete locations on the LDW material, the modulated power being in accordance with grayscale pattern data, and, while the first laser beam is moved over the discrete locations of the grid, exposing the grid to a second laser beam, the power of the second laser beam being less than the bleach threshold of the glass material, to provide each of the discrete locations with a gray scale level to provide a predetermined gray scale pattern of varying optical transmissivity on the LDW material to produce a grayscale mask.

Abstract: An optical unit array comprises a plurality of optical units (2) in each of which a plurality of light source modules (1) are arranged and a first comb-teeth member (41) and a second comb-teeth member (42) which are provided for holding the optical units (2), and respective first pins (213) and second pins (214) of a plurality of optical units (2) are held by the first comb-teeth member (41) and the second comb-teeth member (42). In the optical unit array (4), positions of a plurality of optical units (2) relative to one another can be determined with high accuracy by bringing the first pins (213) and the second pins (214) into contact with grooves (411) and grooves (421), respectively. The outgoing positions and directions of light beams emitted from the light source modules (1) are also determined with high accuracy in each optical unit (2).

Abstract: An exposure apparatus includes a line head and a rotatable photosensitive drum, which is exposed by light from the line head. The line head includes N (“N” being 2 or greater) EL element column. In each EL element column, the area S of a light-emitting pixel of the EL element is constant within a corresponding column. When the column number of the EL element columns is from 1 to N, the area of the light-emitting pixel of the EL element in each column is Si=S1/(2n?1) (where, “i” is the column number of each EL element column and a natural number from 1 to N, and “S1” is the area of the light-emitting pixel of the EL element of a first column). One or more EL elements selected from N EL elements within the N EL element columns perform exposure on the same unit drawing region on the photosensitive drum.

Abstract: The present invention provides a light source apparatus in which wasteful cost increases can be suppressed during the manufacture of various types of light source apparatuses, and replacement of a broken light source can be performed at low cost, a recording apparatus using the light source apparatus, and an image forming apparatus comprising the recording apparatus. A plurality of optical units comprising optical members (a light source element and a lens) for outputting a single beam are combined separably in row form. A holder is used as means for holding the optical units in row form.

Abstract: A line head, includes: a substrate on which a plurality of light emitting elements are provided; a lens array that includes a plurality of lenses; and a cover member that is optically transmissive, is opposed to the lens array, and is provided at the other side of the substrate with respect to the lens array.

Abstract: A pattern exposure method and a pattern exposure apparatus in which the throughput is improved with an inexpensive apparatus and without a low running cost. Output faces of a plurality of laser beams emitted from a plurality of semiconductor lasers respectively are arranged in two directions. One of the directions is the same direction as the scanning direction of a polygon mirror while the other is a direction crossing the scanning direction of the polygon mirror. In this event, the array pitch of the output faces arranged in the direction crossing the scanning direction of the polygon mirror is made equal to resolution of an exposure pattern. In this event, the wavelength of each laser may be made not longer than 410 nm.

Abstract: A light source device includes a light-emitting unit having a plurality of light-emitting elements, a first optical unit that substantially collimates beams emitted from the light-emitting elements in a first direction, and a second optical unit that condenses the emitted beams substantially collimated by the first optical unit in a second direction intersecting the first direction.

Abstract: A laser marking system comprises means for transmitting the laser-emitted light onto one or a plurality of points on a substrate, with means for displacing the substrate and laser light emitting source relative to one another, wherein the substrate is selected to be sufficiently sensitive to the emitted light so that a reaction occurs at either said point or plurality of points which marks the substrate and characterised by the feature that the laser light emitting source comprises an array of lasers.

Abstract: Provided is an exposure head, including: an array substrate having a plurality of organic EL elements arranged in an array on one face; and a plurality of circuit chips having a circuit for driving the organic EL element, and in which the forming face of the circuit is serially arranged along the extending direction of the array substrate so as to face one face of the array substrate; wherein the plurality of circuit chips are mutually serially connected by providing a pair of wiring groups for each mutual boundary location of the circuit chips on one face of the array substrate and outside the arrangement area of the organic EL element, bump-bonding one of the adjacent circuit chips to one end of the pair of wiring groups, and bump-bonding the other adjacent circuit chip to the other end of the pair of wiring groups.

Abstract: A line head includes pixel circuits each of which has a plurality of light-emitting elements and circuit elements arranged in a line, and that make the light-emitting elements emit light selectively, based on selecting signals and data signals; selecting circuits that generate the selecting signals based on clock signals input through clock signal lines; data lines that supply data signals to the pixel circuits; and a conductive line having low impedance, arranged in the vicinity of the clock signal line.

Abstract: In a method of manufacturing a semiconductor thin film piece device, a plurality of semiconductor thin film pieces (14) are selected from among the semiconductor thin film pieces (14) formed on a first substrate (35), and bonded to a first set of predetermined area on a second substrate (12). Subsequently, a plurality of semiconductor thin film pieces are selected from the remaining semiconductor thin film pieces (14), and bonded to a second set of predetermined area.