Abstract: An optical proximity correction method includes extracting first patterns from a pattern mask, performing lithography on at least a part of the first patterns to form first-first patterns, forming the first-first patterns at positions where the first patterns are formed, and performing correction on the pattern mask on which the first-first patterns are formed.

Abstract: In an image forming apparatus, if a controller detects an abnormality in an output voltage of the power source device, the controller notifies the abnormality of the power source device. If the controller detects no abnormality in the output voltage after image data is input and before a scanner motor is activated in response to the input of the image data, the controller activates the scanner motor. If a rotary polygon mirror does not reach a target speed within a predetermined time, the controller re-detects whether there is an abnormality in the output voltage. If the controller detects an abnormality in the output voltage, the controller notifies the abnormality of the power source device. If the controller detects no abnormality in the output, the controller notifies the abnormality of the optical scanning device.

Abstract: Various technologies described herein pertain to collocating a signal processing device with a micromechanical scanning silicon mirror as part of an apparatus. The micromechanical scanning silicon mirror and the signal processing device are part of separate dies. According to various embodiments, the apparatus can include wire bonds directly between sensor contacts of the micromechanical scanning silicon mirror and the signal processing device; the signal processing device can be mounted on a printed circuit board or mounted on or adjacent to the micromechanical scanning silicon mirror. Pursuant to other embodiments, the signal processing device can be mounted on the micromechanical scanning silicon mirror (e.g., mounted on a foot) and electrically coupled to sensor contacts of the micromechanical scanning silicon mirror (e.g.

Abstract: When a photosensitive member and a developing portion are in a separation state and in a start-up period, a first light emission is performed in an image region and a non-image region. When light is detected at least twice during a period when the first light emission is being performed, a second light emission is performed in the non-image region. When a prescribed period of time has elapsed from the start of the second light emission, a third light emission is performed in the image region in a third light emission amount that is smaller than a second light emission amount during a period in which the photosensitive member makes at least one revolution. After the third light emission is performed, the photosensitive member and the developing portion are switched to a contact state.

Abstract: Optical scanning devices each have a Hall device for outputting a rotation signal by detecting a rotation of a motor. An optical scanning device controller has ASICs for performing startup control of the optical scanning devices, a CPU for controlling the ASICs, and a power supply path for supplying power to the optical scanning devices. The ASICs each have a FG counter for counting a clock signal and having a counter value to be reset by a rotation signal output from the Hall device. In a case where the motor is not normally driven when the optical scanning devices are started up, the CPU notifies an abnormality of the power supply device or the power supply path, based on a counter value of the FG counter acquired from each of the ASICs.

Abstract: A lighting device includes a substrate, a control circuit, multiple lighting elements and an opaque division plate. The control circuit, the lighting elements and the division plate are mounted on the substrate. The control circuit has a sensor. The lighting elements are electrically connected to the control circuit. The division plate is located between the control circuit and the lighting elements. Given the opaque division plate installed between the lighting elements and the control circuit, light emitted from the lighting elements fails to penetrate through the division plate and is thus not sensed by the sensor on the control circuit opposite to the lighting elements. Accordingly, when detecting a dark environmental luminance, the control circuit activates the lighting elements, and after the lighting elements are activated, light emitted from the lighting elements won't cast on the sensor to affect correct determination of the control circuit.

Abstract: An optical scanning device configured to remove or sufficiently reduce ghost light includes an input optical system for directing a light beam from a light source to a deflecting surface of a deflector, and an imaging optical system for imaging a light beam scanningly deflected by the deflecting surface upon a surface to be scanned, wherein, in a sub-scan section, the light beam is incident on the deflecting surface of the deflector from an oblique direction with respect to an optical axis of the imaging optical system, wherein a light blocking member for blocking ghost light is disposed on a light path between the deflecting surface and the scanned surface, wherein an end portion of the light blocking member in the sub-scan direction is formed with a curved shape having a height in the sub-scan direction which height changes in accordance with the position in the main-scan direction.

Abstract: What is disclosed is a novel system and method for minimizing dot visibility in color marking devices capable of dot-on-dot printing. The present method achieves minimum dot visibility for a given dispersed-dot screen by performing a CMYK to CMYKRGB conversion which uses less visible dots as much as possible before more visible dots are introduced. The output color dot coverages are calculated sequentially to minimize the coverage of more visible dots in a decreasing order of brightness. Resulting images have noticeably reduced halftone graininess, particularly in the mid to darker tone areas. The present method is also computationally efficient.

Abstract: An image forming apparatus that includes: a laser beam source; plural photoconductive members corresponding to plural colors; a modulation drive unit for performing pulse width modulation for each of colors by an image clock having a cycle of a pixel length,; a single piece of polygon mirror whose reflection surfaces are disposed in a rotation direction thereof with a plurality of different inclination angles with colors; a beam detector that is disposed adjacent to the photoconductive member; and an image clock/data switching unit configured to generate the image clock of a frequency varying with the colors for making the same a color-based image magnification, and switch the image clocks generated for each of the colors in synchronization with a detection signal coming from the beam detector.

Abstract: The present invention provides methods and apparatus for adjusting the resonant frequency, scan velocity or other parameters of a pivotally functional surface such as an oscillating mirror used as the scanning engine of a laser printer or projection display. The selected parameter is adjusted by the application of tensional or compression stress to the torsional hinges of the mirror. According to one embodiment, the appropriate stress is generated by a slice of piezoelectric material bonded to the mirror device itself or to other portions of the support structure of the scanning engine.

Abstract: A photo device condenses the bright spot on the display to project the spot light onto the projection plane, thereby projecting it onto photo detectors the projection plane. A counter counts the time from the time of a vertical sync signal and supplies its output to AND gates. A correspondence detector brings bright spot display positions on the display at multiple times into correspondence with their projection positions on the photo device in accordance to recording time. An extrinsic parameter calculator calculates the 3-D translation and rotation of the photo device with respect to the bright spot scanning surface of the display from at least three sets of the bright spot display positions and their corresponding projection positions.

Abstract: A mechanism for and a method of pre-exposing a camera film with images. The mechanism comprises a control unit having a storage device for storing said images, a light generator controlled by the control unit to produce a scanning light beam for pre-exposing the film with said images, and a lens aligned with the tube for focusing the light beam onto the film for said image pre-exposure. The mechanism is arranged to be used at least partially in an absolute dark environment. The method resides in the operation of this mechanism.

Abstract: A method of determining linear position by means of lenticular screens in a direction perpendicular to the axes of the lenticules and in the planes of the screens is disclosed comprising the steps of:a) directing a collimated beam of radiation perpendicularly into a first sheet of lenticular material;b) allowing the beam transmitted by the first sheet to enter a second sheet of similar pitch, oriented parallel to the first sheet, and with the axes of the lenticules parallel to the axes of the first sheet, and spaced so as to recollimate the radiation beam upon exit from the second sheet;c) placing a radiation detector array situated to receive the collimated beam exiting from the second lenticular sheet and subtending the field-of-view of the lenticules;d) sensing the position of the collimated beam within the field-of-view of the lenticules, and keeping account of the number of transits and fractions thereof of the beam across the center of the field-of-view of the lenticules with the detector array, due to

Abstract: A method and apparatus for compensating for color and brightness variations in a white-light printer is described where the white-light printer automatically adjusts exposure of a photosensitive medium to optimize a printed image thereon. The white-light printer generates compensation factors used by the white-light printer to individually correct for primary colors within an image by monitoring chromatic transmission through the same or equivalent color filters as are being used to expose the photosensitive medium. A method is disclosed where the video output is set at maximum and brightness, or Luma, is varied and measured in foot-Lamberts. The Luma that gives "white", a film table is recorded, and that Luma is fixed such that proper white, black, and grays are attained. A similar procedure is repeated for each primary color, thereby compensating for color and brightness variations due to differing CRTs and the warm-up state of each CRT.

Abstract: A light-pattern illuminating apparatus comprises: a light-pattern holding device in which, when a light pattern is applied to one surface thereof, the light pattern is written, and from which, when reading light is applied to another surface thereof, the written light pattern is read; a light-pattern writing device for applying the light pattern corresponding to image information to the one surface of the light-pattern holding device in a state in which at least vertical scanning is controlled; a light-pattern reading and illuminating device for illuminating another surface of the light-pattern holding device with the reading light and for illuminating an image receiving element with the light pattern which has been read from the light-pattern holding device; and a controlling device for controlling the duration of illumination of the image receiving element with the light pattern so that the duration becomes approximately an integral multiple of the period of vertical scanning.

Abstract: An image recording apparatus of the present invention comprises: an image processing means for compensating the color and gradation of an inputted color image; a monochromatic CRT; a display means for successively inputting color images, having a plurality of colors, into the monochromatic CRT, and for displaying a plurality of images on the monochromatic CRT as monochromatic images; an optical system for forming the monochromatic image, displayed on the monochromatic CRT, onto a color photographic paper; a plurality of color filters, which are selectively inserted between the monochromatic CRT and the color photographic paper, and convert the monochromatic image into a plurality of monochromatic color images; an exposure luminance setting means for each separation color; and an emitting luminance control means.

Abstract: Selective pattern exposure with high reliability is made possible by a desired pattern of repeated pattern and a non-repeated pattern. Exposure technology is obtained to enable improvement of preparation efficiency of pattern data and to secure inspection of an aperture pattern. With the invention, an electron beam is used as focused beam, and a pattern exposure apparatus of a batch transfer system for transferring repeated pattern and non-repeated pattern of plural graphics of a semiconductor integrated circuit or the like comprises an EB drawing section for controlling the beam and irradiating beam onto a sample, a control I/O section, a drawing control section and a data storage section. In the EB drawing section, a semiconductor wafer is mounted on a platform, and in the path of the electron beam from the electron beam source to the stage, a first mask, a blanking electrode, an electron lens, a first deflector, a second deflector, a second mask and a third deflector are installed.

Abstract: A raster scanning optical system and method emits a first light beam and a second light beam onto a light receiving member. A scanning device has at least one facet for reflecting the first and the second light beams to the light receiving member. A light transmissive plate is located in a path of the first light beam between the first light emitting device and the scanning device. The light transmissive plate adjusts the sagittal direction and the tangential direction of the first light beam by a desired amount so that the first and second light beams are reflected from positions of the scanning device that are closer to each other and parallel in both the sagittal and tangential meridian.

Abstract: Selective pattern exposure with high reliability is made possible by a desired pattern of repeated pattern and a non-repeated pattern. Exposure technology is obtained to enable improvement of preparation efficiency of pattern data and to secure inspection of an aperture pattern. With the invention, an electron beam is used as focused beam, and a pattern exposure apparatus of a batch transfer system for transferring repeated pattern and non-repeated pattern of plural graphics of a semiconductor integrated circuit or the like comprises an EB drawing section for controlling the beam and irradiating beam onto a sample, a control I/O section, a drawing control section and a data storage section. In the EB drawing section, a semiconductor wafer is mounted on a platform, and in the path of the electron beam from the electron beam source to the stage, a first mask, a blanking electrode, an electron lens, a first deflector, a second deflector, a second mask and a third deflector are installed.