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| Number | Title | Issue Date |
| 8072478 | Optical scanning device, image forming apparatus, and write method An optical scanning device acquires a displacement amount of each of scanning light beams in the main scanning direction, and corrects, based on the displacement amount, writing energy density at a write position such that a variation in image density due to a varia... | 12/06/2011 |
| 7920157 | Image forming apparatus that controls an exposure amount intensity for forming a first image formed of an equal or smaller number of consecutive dots than a predetermined number in a predetermined direction is higher than an electric intensity for forming a second In an image forming apparatus, an exposure device performs exposure on a non-image area of image pattern, performs an exposure on the image area in an exposure amount lower than the non-image area or does not perform exposure, and an exposure amount control device c... | 04/05/2011 |
| 7787006 | Image forming apparatus capable of forming excellent image Differing ratios of the amount of light from light source LD2 to the amount of light from light source LD1 are provided. An image pattern for adjustment that includes, for each color, an area made up of isolated dots by light source LD1 and an a... | 08/31/2010 |
| 7782355 | Image forming apparatus using a plurality of lasers with a varying exposure ratio An electrostatic latent image is formed by exposing the same exposure point on a photosensitive drum to a laser beam having an emission wavelength of 420 nm and a laser beam having an emission wavelength of 780 nm. The exposure is performed in a pulse-height modulat... | 08/24/2010 |
| 7688340 | System and method for controlling the lower power bound for a raster output scanner in a color xerographic printer A method and system for a color xerographic machine determines a lower bound for the ROS power levels so that color defects are not produced by light attenuation from one or more layers of toner particles on a latent image. The method computes a minimum ROS power le... | 03/30/2010 |
| 7564475 | Compensation of high frequency banding in printing systems A test pattern is written using multiple image beams in a non image zone at set time intervals. The test pattern is sensed and a profile of each beam is determined from the multiple image beams. A minimum reflectance of the profile is determined from the test patter... | 07/21/2009 |
| 7557823 | Image forming apparatus An image forming apparatus including a light source unit configured to emit a light beam, an optical deflector configured to generate a scanning light beam from the light beam of the light source unit, an optical writer having an optical system configured to guide t... | 07/07/2009 |
| 7463279 | Image forming apparatus and control method therefor An image forming apparatus forms an image by laser beams from a plurality of lasers. The image forming apparatus includes a light amount control circuit that detects displacement in a sub-scanning direction of the main scanning line of a laser beam from the predeter... | 12/09/2008 |
| 7394479 | Pulsed laser printing The present disclosure includes systems and techniques relating to pulse laser printing. In general, in one implementation, an apparatus includes: a laser operable to produce a pulsed printing beam; an optics assembly operable to focus and direct the pulsed printing... | 07/01/2008 |
| 7382387 | Image forming apparatus and image density correction device An image forming apparatus, having a submodule that causes non-uniformity in density in a slow-scanning direction in accordance with rotation, includes a correction image forming unit that forms an image for density correction, in cooperation with the submodule, a d... | 06/03/2008 |
| 7363856 | Flat bed platesetter system The present invention provides a flat bed platesetter system and a method for its use, particularly for imaging printing plates. For providing a precise, continuous, rapid and format-independent system which is reliable, the present invention suggests to move the pr... | 04/29/2008 |
| 7362348 | Image forming apparatus capable of forming image on optical disk, and image forming method An image forming apparatus includes: a spindle motor (130) for rotating an optical disk (200); an optical pick-up (100) for applying laser light to the optical disk which moves in a radial direction of the optical disk; a stepping motor (140 | 04/22/2008 |
| 7292314 | Exposure device with spatial light modulator and neutral density filters Exposure device for writing mixed data onto a photosensitive support comprising: a light source (10), supplying an exposure light; a first two-dimension pixel matrix modulator (50), and a neutral optical filter means (12) having at least two dif... | 11/06/2007 |
| 7289137 | Method and test form for equalizing the exposure heads in an exposer for printing originals A method and a test form for equalizing exposure heads of an exposer recording printing originals onto a recording material with exposure heads, with regard to the area coverage recorded. Each head contains a laser module generating a laser beam and focusing it onto... | 10/30/2007 |
| 7286764 | Reconfigurable modulator-based optical add-and-drop multiplexer An optical add and drop multiplexer system comprising a first module for providing a first signal; a second module for providing a second signal; and a modulator for receiving a channel of the first signal at a first location, the first location configured to actuat... | 10/23/2007 |
| 7285365 | Image enhancement for multiple exposure beams An aspect of the present invention includes a method for patterning a workpiece covered at least partly with a layer sensitive to electromagnetic radiation by using a plurality of exposure beams having a predetermined separation in at least a first direction for exp... | 10/23/2007 |
| 7280132 | Method and device for imaging a printing form A method for imaging a printing form (10) using at least one controllable light source (42) is described, a number of image spots (20) being generated at a number of positions on the printing form (10) in accordance with image data in a b... | 10/09/2007 |
| 7265768 | Image forming apparatus A photoreceptor cleanerless image forming apparatus and method for overlappingly forming yellow, cyan, magenta, and black toner images and decreasing color mixture or an exposure error due to reverse transfer toner or untransferred toner are provided. The image form... | 09/04/2007 |
| 7233557 | Method for identifying location on an optical disk A method is disclosed for positioning an optical labeling mechanism substantially close to a particular track of a labeling surface on an optical disk. The method can include the operation of positioning the optical labeling mechanism adjacent to the particular trac... | 06/19/2007 |
| 7224646 | Method of forming image on optical disc by radialy vibrating laser beam under focus control An optical disc recording apparatus can draw an image by radially vibrating a laser beam under stable focus control. A pickup radiates the laser beam onto the optical disc rotated by a spindle motor. A focus servo controller maintains a constant spot diameter of the... | 05/29/2007 |
| 7221383 | Printer for recording on a moving medium A method for forming a pixel (20) having a predetermined density onto a sensitized recording medium moving in a length direction energizes a pixel exposure source (14) to begin exposure at the leading edge (34) of a pixel (20) and for a f... | 05/22/2007 |
| 7218336 | Methods and apparatus for driving illuminators in printing applications A method of providing drive signals to an illuminator module having a plurality of channels in a printing application. Binary image data including image bits is provided from a data source to the illuminator module. Each image bit is converted to a multi-bit amplitu... | 05/15/2007 |
| 7215353 | Method and apparatus for image forming capable of effectively controlling a light beam with a pulse width modulation An image forming apparatus includes a modulation data storage, a pulse width modulator, and an optical writing mechanism. The modulation data storage stores different gray-scale pulse sets. Each set includes gray-scale pulses having pulse widths different from each ... | 05/08/2007 |
| 7212226 | Image density control apparatus and image formation apparatus An image forming apparatus includes a memory which stores test pattern data. The test pattern data are configured for detecting a density of image data formed on a photo conductor. The image forming apparatus includes a laser unit which forms a plurality of test pat... | 05/01/2007 |
| 7206011 | Apparatus for and method of recording optically scanned image An image signal with an overshoot is generated on a positive-going edge of an input image signal with an overshoot producing unit. Then, a light signal with an overshoot is outputted from a recording light source in response to the image signal with the overshoot su... | 04/17/2007 |
| 7196717 | Image forming apparatus, control method therefor, and program for implementing the control method An image forming apparatus which is capable of eliminating density irregularities of an image formed caused by potential irregularities of the photosensitive member when the drum is irradiated by a beam of constant luminous intensity. A laser driver irradiates a bea... | 03/27/2007 |
| 7190483 | Image recorder An illumination lens applies a laser beam emitted from a laser light source onto a light valve. The laser beam divided into a number of beams and modulated in the light valve is reflected by a total internal reflection prism so that the optical path thereof is bent,... | 03/13/2007 |
| 7177081 | High contrast grating light valve type device A grating light valve has with a plurality of spaced reflective ribbons are spatially arranged over a substrate with reflective surfaces. The grating light valve is configured to optimized the conditions for constructive and destructive interference with an incident... | 02/13/2007 |
| 7147338 | Circuit on a curved, or otherwise irregularly shaped, surface, such as on a helmet to be worn on the head, including a fiber optic conductive path A curved surface, such as a helmet, including a light source and light conductive paths. Light emitting diodes (LEDs) provide the light source and fiber optic conductors provide the light conductive paths. The fiber optic conductors have polished ends to create lens... | 12/12/2006 |
| 7145464 | Data collection device In one aspect of the invention a data collection device is provided for use with a medium said medium being usable when exposed to electromagnetic radiation that is characteristic of such use. The data collection device has a sensor capable of sensing when the mediu... | 12/05/2006 |
| 7129968 | Image forming apparatus capable of forming image on optical disk, and image forming method An image forming apparatus includes: a spindle motor (130) for rotating an optical disk (200); an optical pick-up (100) for applying laser light to the optical disk which moves in a radial direction of the optical disk; a stepping motor (140 | 10/31/2006 |
| 7106964 | Light amount adjustment method for use in image exposure apparatus A light amount adjustment method for use in an image exposure apparatus records an image by scanning a photosensitive material with a light beam modulated in accordance with image signal. The light beam has a first light amount level and a second light amount level ... | 09/12/2006 |
| 7102801 | Pulse-width modulated drivers for light-emitting units of scanning mechanism A scanning mechanism of one embodiment of the invention is disclosed that includes light-emitting units, an integrating detector, and pulse-width modulated (PWM) drivers. Each light-emitting unit can emit colored light corresponding to a color of a color space. The ... | 09/05/2006 |
| 7088468 | Data-conversion method for a multibeam laser writer for very complex microlithographic patterns The invention relates to microlithography, in particular to the writing of photomasks for computer displays, microelectronic devices, and precision photoetching. It is also applicable to wafers, optical devices and a variety of electronic interconnection structures ... | 08/08/2006 |
| 7068372 | MEMS interferometer-based reconfigurable optical add-and-drop multiplexor The interferometer comprises a beam splitter, a mirror and a phase modulator. The beam splitter splits a signal into a first portion and a second portion. The mirror reflects the first portion. The first portion includes an optical path length, which is fixed. The p... | 06/27/2006 |
| 7057819 | High contrast tilting ribbon blazed grating The light modulator includes elongated elements and a support structure coupled to the elongated elements. Each element includes one or more lengthwise slits within an active optical area, and a light reflective planar surface with the light reflective planar surfac... | 06/06/2006 |
| 7054515 | Diffractive light modulator-based dynamic equalizer with integrated spectral monitor An integrated device of the present invention comprises free-space optics, a bi-directional multiplexor/de-multiplexor, a diffractive light modulator, a beam splitter, an optical performance monitor, and a controller. The free-space optics collimate, transform and i... | 05/30/2006 |
| 7049164 | Microelectronic mechanical system and methods The current invention provides for encapsulated release structures, intermediates thereof and methods for their fabrication. The multi-layer structure has a capping layer, that preferably comprises silicon oxide and/or silicon nitride, and which is formed over an et... | 05/23/2006 |
| 7046266 | Scanner system A method of scanning for writing a pattern on a surface, including providing a scanning beam comprised of a plurality of independently addressable sub-beams, scanning the surface with the scanning beam a plurality of times, the sub-beams scanning the surface side-by... | 05/16/2006 |
| 7042482 | Image processing apparatus, image processing method, and program An image processing apparatus, comprising: an exposing device for exposing an image forming material so as to form a latent image on the image forming material based on image data; a thermal developing device for developing and visualizing the latent image on the ex... | 05/09/2006 |
