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| Number | Title | Issue Date |
| 7633942 | Network traffic generation and monitoring systems and methods for their use in testing frameworks for determining suitability of a network for target applications A system for monitoring traffic on a network first discovers the network so as to map the various devices and links in the network. Statistics are then gathered from various points in the network relating to quality of service, and especially loads on the network de... | 12/15/2009 |
| 7072429 | Filter coefficient setting technique for variable filtering process and variable sampling frequency conversion A first series of filter coefficients stored in a memory itself corresponds to a given filter characteristic such as a given high cutoff frequency. A second series of filter coefficients is generated by performing an interpolation process on the first series of filt... | 07/04/2006 |
| 6449000 | Deflection scanning apparatus having balance control In a deflection scanning apparatus used for a laser beam printer or the like, a rotating body is provided with a deflector which has a plurality of recesses arranged in a concentric manner with the center at the rotation axis of the rotating body. Balance... | 09/10/2002 |
| 6411323 | High power marking system achieved through power scaling via multiplexing Power scaling by multiplexing multiple fiber gain sources with different wave-lengths is useful in printing applications requiring higher optical powers to perform the printing function, such as through thermal inducement in thermal ablation, thermal fusi... | 06/25/2002 |
| 6356292 | Density correction method for recording apparatus and density correction apparatus The density correction method according to the present invention includes recording an image on said recording medium at a predetermined halftone density, measuring record density of a result of recording of the halftone density by a densitometer, raising... | 03/12/2002 |
| 6356293 | Printer including a plurality of print drums A printer of the present invention includes at least a first and a second drum unit each including a respective print drum. Angular position sensing device each are assigned to the respective print drum. A main motor included in drum drive mechanism is co... | 03/12/2002 |
| 6330016 | Image recording apparatus and image recording method An image recording apparatus includes a PLZT head. The PLZT head performs an interval exposure based on an interval exposure data between exposures of photosensitive material. Further, exposure data of a predetermined number of lines already used in an N-... | 12/11/2001 |
| 6307584 | Single polygon scanner for multiple laser printer A color laser printer includes a photoconductor section having photoconductive material configured to be exposed to receive a plurality of color toners in a selective manner representative of a color image to be printed. The printer further includes a sca... | 10/23/2001 |
| 6304282 | Color image forming apparatus Disclosed is a color image forming apparatus in which it is possible to prevent positional deviation in scanning of each optical scanning device without having to improve the lens accuracy to an extreme degree. In a color image forming apparatus of the ty... | 10/16/2001 |
| 6300970 | Image forming apparatus having a detachably mounted sheet supply roller The present invention provides an image forming apparatus including a sheet supply device having a detachable sheet supply roller for feeding stacked sheets, an image forming device having a process cartridge for forming an image on the sheet fed by the s... | 10/09/2001 |
| 6295079 | Scanning optical unit A scanning optical unit is provided which can prevent flare reflection of a laser beam at an end portion of a reflecting mirror which is provided outside an exposure region and which is for detecting a time of starting of exposure by the laser beam. In th... | 09/25/2001 |
| 6295081 | Recording medium discharge apparatus and image forming apparatus equipped with recording medium discharge apparatus A recording medium discharge apparatus includes bins for storing sheets of paper therein. The apparatus also includes level sensors for each detecting one of the bins having been filled with paper sheets. Each sensor consists of a light emitter and a ligh... | 09/25/2001 |
| 6285388 | Image forming apparatus having a plurality of image-forming modes and method of controlling the apparatus When the image-forming modes are switched over, the difference between the scan speeds of image-forming modes before and after the mode switching is checked. If the difference is not less than a predetermined set value, the adjustment of a laser beam is e... | 09/04/2001 |
| 6281924 | Image forming method Image patterns formed on a sheet of paper changes in correspondence with an input image density. As the input density increases, the image patterns change from the state of FIG. 6(a) through the state of FIG. 6(b)-6(g) to the state of FIG. 6(h). As appare... | 08/28/2001 |
| 6281079 | MOS transistor in a single-transistor memory cell having a locally thickened gate oxide, and production process A MOS transistor in a single-transistor memory cell having a locally thickened gate oxide, and a process for producing the transistor. The MOS transistor can be used as a selection transistor in a single-transistor memory cell having nitride spacers, or a... | 08/28/2001 |
| 6281923 | Optical print head An optical print head, which records an image in accordance with image data on a photosensitive recording medium by exposure/unexposure to light, comprises a light source for emitting light, a light source conversion unit for converting the light into lin... | 08/28/2001 |
| 6281920 | Image recording apparatus The improved image recording apparatus that performs image recording on a recording material to output a print with a record of a visible image includes an outputting device of a print having printed thereon a minimum density in the recording material, a ... | 08/28/2001 |
| 6278475 | Optical writing device Disclosed are optical writing devices each of which has three arrays of light shutter elements for emitting light signals of red, green and blue, respectively. The arrays of light shutter elements of each optical writing device are adjustably provided in ... | 08/21/2001 |
| 6278474 | Image forming apparatus provided with a plurality of light signal emitting heads An image forming apparatus which is capable of composing an image with a high accuracy on an image receiving member with use of a plurality of light signal emitting heads. The image forming apparatus, which is used for forming an image on the image receiv... | 08/21/2001 |
| 6278476 | Image forming apparatus in which a laser beam is applied from a semiconductor laser to scan an image carrier, and method of controlling the apparatus A driving current is supplied via a current limiting resistor to a laser diode for emitting a red laser beam. This driving current is controlled so as to make the optical output of the laser diode have a predetermined reference value. Further, a current o... | 08/21/2001 |
| 6278477 | Image forming apparatus An image forming apparatus having a colorimeter for measuring density or color of an image, and capable of carrying out calibration with high accuracy. In the image forming apparatus, a test image, and a first reference line and a second reference line fo... | 08/21/2001 |
| 6274903 | Memory device having a storage region is constructed with a plurality of dispersed particulates A memory device, a manufacturing method thereof, and an integrated circuit thereof are provided for storing information over a long period of time even if the memory device is manufactured at low temperatures. On a substrate made of glass, etc., a memory ... | 08/14/2001 |
| 6275250 | Fiber gain medium marking system pumped or seeded by a modulated laser diode source and method of energy control Double clad fiber gain medium systems particularly adapted for marking indicia on surfaces of articles are disclosed. These systems provide a modulated output from a pump or seed semiconductor laser source to a double clad fiber gain medium which provides... | 08/14/2001 |
| 6275249 | Method of evaluating characteristics of a light beam, apparatus for evaluating the characteristics, and apparatus for adjusting a write unit by employing the evaluation method At least two light beam detection units are spaced at a predetermined distance and provided in the scanning direction of a surface to be scanned. A light beam is emitted to the light beam detection unit provided on a scanning start side, by lighting a lig... | 08/14/2001 |
| 6270177 | Printer unit for PC disk drive bay A printer unit having a pagewidth full color ink jet printhead; a detachable print roll cartridge including ink and paper, wherein the printer unit is formed within the disk drive bay of a personal computer type system. The printer unit includes a rotatab... | 08/07/2001 |
| 6268877 | Scanning optical device featuring optical system image magnifications in main and subscanning directions within a prescribed range A scanning optical device includes a light source having a plurality of light emitting points, a deflector for deflecting a plurality of light beams emitted from the light source, and an optical system for guiding the plurality of light beams emitted from... | 07/31/2001 |
| 6268254 | Method and device for improved salicide resistance on polysilicon gates A method and device for improved salicide resistance in polysilicon gates under 0.20 .mu.m. The several embodiments of the invention provide for formation of gate electrode structures with recessed and partially recessed spacers. One embodiment, provides ... | 07/31/2001 |
| 6268876 | Method of evaluating characteristics of a light beam apparatus for evaluating the characteristics and apparatus for adjusting a write unit by employing the evaluation method At least two light beam detection units are spaced at a predetermined distance and provided in the scanning direction of a surface to be scanned. A light beam is emitted to the light beam detection unit provided on a scanning start side, by lighting a lig... | 07/31/2001 |
| 6266080 | Thermal recording with variable power density The power density used during a thermal recording process is changed without changing the total energy, scanning speed or resolution. The change of power density is achieved by making the optical resolution greater than the addressability and sweeping the... | 07/24/2001 |
| 6262758 | Image formation apparatus with clock circuit for driving recording chips An image formation apparatus which records an image on a recording medium is provided. The apparatus has a recording element array head on which plural recording chips are arranged, plural recording elements being arrayed on the recording chip, a referenc... | 07/17/2001 |
| 6262759 | Method and apparatus for forming an image using signals synchronized with scanning A method and apparatus for forming an image reduce the processing load on a video controller. A CPU causes a counter to start counting the optical beam detection signals of a photodiode in accordance with a signal which indicates the leading edge of a she... | 07/17/2001 |
| 6259466 | Light source drive apparatus and image formation apparatus An image formation apparatus stably controls a drive current of a laser diode irrespective of change in density. In the apparatus, a current restriction circuit restricts a current ILD according to the output light quantity. If the current ILD increases a... | 07/10/2001 |
| 6259467 | Multi stage oscillator phase alignment scheme A method and apparatus for signal phase alignment. A pulse is produced and a reference clock signal having a first frequency with one or more clock edges is produced. An alignment clock signal is generated having the first frequency aligned with the pulse... | 07/10/2001 |
| 6256054 | Photo receptor belt edge detection apparatus A photo receptor belt edge detection apparatus by which out-of-alignment of color images which arises from displacement of scanning start positions for different colors on a photo receptor belt of a color image formation apparatus can be eliminated with a... | 07/03/2001 |
| 6256055 | Electrophotographic printer An object is to make it possible to compensate a forming position of an electrostatic latent image just after detection of a position of a photosensitive belt. A position control section has a timing compensating function to compensate output timing of an... | 07/03/2001 |
| 6252620 | Image recording apparatus and image recording method An image recording apparatus and an image recording method enable high density and without blank space between pixels printed on a recording medium to be printed. The image recording apparatus comprises a multi-hole photoreceptor provided with a transpare... | 06/26/2001 |
| 6249307 | Image forming apparatus using plural beam scanning The timing control of optical beams (i.e., the control of the beam positions in the main scanning direction) and the beam amount control of the optical beams for position control (i.e., the control of the beam positions in the sub-scanning direction) are ... | 06/19/2001 |
| 6249304 | Image forming apparatus and image forming method for forming color images by gray-level image forming technique The present invention is aimed at carrying out high-precision and stable image formation using a gray-level image forming technique. In carrying out image formation by a gray-level electrophotographic process, the relationship between the layer thickness ... | 06/19/2001 |
| 6247781 | Ink jet printhead with an improved eyelid system A technique for sealing a printhead of an ink jet printer system on startup, opening the seal to print, and opening further on an arbitrary path for cleaning, is provided for by the present invention. The ink jet printhead has an ink drop generator, a cat... | 06/19/2001 |
| 6249308 | Method of controlling peak power of a radiant energy emitting system A method of controlling peak power of a radiant energy emitting system, such as lasers adapted for use in laser edge marking apparatus, reduces fog spots on the web caused by impinging laser energy. A laser printer has an attenuating member provided in th... | 06/19/2001 |
