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| Number | Title | Issue Date |
| 8174554 | Optical scanning device and printing apparatus using a threshold matrix to improve image quality An optical scanning device includes: an emission unit which emits a light beam; an oscillating mirror which deflects the light beam to reciprocate on a scanning surface; and a controller which controls the emission unit to be on and off to form a pattern of dots in ... | 05/08/2012 |
| 8018480 | Image forming apparatus and its control method A first process unit replaces a portion of pixels in a pixel sequence forming a first scanning line of a first color by a different portion of pixels in a pixel sequence forming a second scanning line of the first color. A second process unit performs a thicken proc... | 09/13/2011 |
| 7978214 | Apparatus and method of reducing banding artifact visibility in a scanning apparatus A method of, and apparatus for, reducing the visibility of banding artifacts on a printed medium comprising producing synthetic artifacts on the printed medium, overlapping scan lines at swath boundaries and controlling exposure along a scan line to reduce the visib... | 07/12/2011 |
| 7961211 | Optical scanning device and image forming apparatus An optical scanning device includes a light source; a light source driving unit configured to modulate/drive the light source; a pulse width information holding unit configured to hold pulse width information items of predetermined pixels corresponding to scanning p... | 06/14/2011 |
| 7688341 | Laser jet bow/tilt correction A method for printing with a laser printer includes obtaining data representative of the bow and tilt characteristics of the printer. Data representing an image to be printed is loaded and analyzed. A control signal is determined from the image data and modified bas... | 03/30/2010 |
| 7586512 | Image forming apparatus and image density controlling method An image forming apparatus, forming an image by two-dimensionally fast and slow-scanning and exposing with light that has been modulated in accordance with image data representing an image and visualizing an electrostatic latent image with toner, includes a calculat... | 09/08/2009 |
| 7405743 | Image forming method and apparatus An image forming method using an image forming apparatus including: a latent image carrier whose surface is driven in a sub scanning direction; a deflector which scans a beam spot reciprocally in a main scanning direction substantially perpendicular to the sub scann... | 07/29/2008 |
| 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 |
| 7369269 | Print toner density mode/print media default link A method for automatically selecting a print job parameter including the steps of ascertaining a first print job parameter and automatically selecting a second print job parameter based upon the first print job parameter. In one embodiment the method includes the st... | 05/06/2008 |
| 7327379 | Pixel clock and pulse-modulation-signal generating device, optical scanner, and image forming apparatus A pixel clock and pulse-modulation-signal generating device includes a high-frequency-clock generating unit that generates a high-frequency clock; a modulation-data generating unit that generates, based on pixel control data that specifies a pixel length and image d... | 02/05/2008 |
| 7315315 | Halftone processing method in laser printer and apparatus using the same A halftone processing method for correcting the variation in light intensity on a photoconductive drum and an apparatus using the same, wherein the method includes the steps of preparing a plurality of dithering functions, detecting the position where image data for... | 01/01/2008 |
| 7292260 | Image forming apparatus and image forming method An image forming apparatus records an image on a photosensitive material by controlling a light emission amount from a plurality of light emission elements that each emit light in accordance with a supplied light emission control signal. The apparatus has a control ... | 11/06/2007 |
| 7262882 | Distribution curve generating device A plurality of color signals indicative of a plurality of color patterns are processed based on a first distribution curve to distribute the original color signals into color signals for normal ink and color signals for light ink. Then, the plurality of color patter... | 08/28/2007 |
| 7253922 | Monochromatic printer and image processing apparatus A printing apparatus is provided with multiple achromatic color inks having different densities and at least one chromatic color ink. Diversity of dots are created with the multiple achromatic color inks on a printing medium according to image data to form a black a... | 08/07/2007 |
| 7236184 | Exposure device and exposure method for exposing a photosensitive medium to light on the basis of image data containing multiple pixels In an exposure device according to the present invention, a plurality of exposure bands each containing multiple dots is formed on photographic paper by repeating main scanning in a main scanning direction based on image data that contains multiple pixels and the tr... | 06/26/2007 |
| 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 |
| 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 |
| 7193643 | Scan non-linearity correction using frequency modulation and synchronization with a master clock An electronic circuit is utilized to correct scan non-linearity of a raster output scanner. The circuit modulates a clock frequency to match a scan linearity error profile. Because it is a separate circuit, the exiting closed-loop clock generator does not need to be... | 03/20/2007 |
| 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 |
| 7110138 | Apparatus, method and computer program product for performing image formation An image forming apparatus, method and computer program product, including a pattern detecting device configured detect whether or not a pattern is constructed with a lengthwise line of a single dot width on a basis of a pattern of respective multi-value data of a t... | 09/19/2006 |
| 7102799 | Method for electronic image rectification in laser scanner devices In a method for electronic image rectification in pixel-by-pixel scanning of a substrate by a bundled electromagnetic beam, the pixels are read out one after the other in readout intervals of constant predetermined duration. In order to improve image quality, the de... | 09/05/2006 |
| 7072522 | Image processing apparatus and method The invention provides a method of burying additional information in an image, which can suppress deterioration of image quality and reduce an extraction error rate when extracting the additional information. For implementing the method, in an image processing appar... | 07/04/2006 |
| 7057617 | Font memory and font data reading method Font data for each resolution level is stored in a font memory (10). Character specifying addresses A0 to Ax and font resolution levels L0 to Lz are input to output the optimum font data that match the resolution of... | 06/06/2006 |
| 7046398 | Method and apparatus for dynamic adjustment of print quality A method and apparatus for adjusting a printer is disclosed. An area is printed over, and sensors are used to collect pixel values over the area. Then, metric criteria are applied against pixel values to determine whether or not to adjust the number-density of dots ... | 05/16/2006 |
| 7000543 | Method and apparatus for loading and unloading flexographic plates for computer-to-plate imaging A method and apparatus to aid the loading and unloading of flexographic plates to and from an imager. The apparatus includes a magazine containing a plurality of compartments each for holding a single flexographic plate, the compartments arranged vertically, and mov... | 02/21/2006 |
| 6976426 | Image replication element and method and system for producing the same A process and system for making an image replication element from a photosensitive printing element by digital photopolymerization are provided. The process includes forming a desired printing image on a photopolymer layer by digital light processing without the use... | 12/20/2005 |
| 6956594 | Image forming apparatus including two image bearing members and featuring a variable dot image The image forming apparatus includes, a movable first image bearing member on which a toner image is formed; and a movable second image bearing member which is brought into contact with the first image bearing member and to which the toner image on the first image b... | 10/18/2005 |
| 6936300 | Method for fabricating organic electroluminescent display Relating to a method for fabricating an organic electroluminescent display having improved surface flatness and thickness uniformity as well as an improved image quality at edge regions of a pattern, a method for fabricating an organic electroluminescent display inc... | 08/30/2005 |
| 6919973 | Auxiliary pixel patterns for improving print quality Utilization of non-printing high-spatial-frequency auxiliary pixels are introduced into the bitmap of an image to obtain local control of the image development by modification of local average voltage in the development nip. These auxiliary pixels embody frequencies... | 07/19/2005 |
| 6916131 | Image forming device customizing the image to fit the paper length A tandem-type image forming device is provided which includes a plurality of photosensitive drums, a paper edge detecting section to detect a front edge and a rear edge of a sheet of paper, an exposure starting time calculating unit for each of a plurality of photos... | 07/12/2005 |
| 6819450 | Enhanced edge resolution and critical dimension linearity in lithography A semiconductor fabrication gray level photolithography strategy, in which the energy beam intensities corresponding to each gray level are selected from a set of non-linear, non-monotonic intensities. Rasterized geometric shape edges are defined by associating one ... | 11/16/2004 |
| 6812951 | Image recording method and apparatus with density control An image recording method includes: forming a latent image on a photothermographic imaging material by exposing a light beam from a light source thereto; and forming a visible image on the photothermographic imaging material on which the latent image is formed by th... | 11/02/2004 |
| 6795100 | Method and apparatus for controlling a light signal in electrophotographic developing type printer An optical signal control process and circuit providing an improved electronic photography method reproduction apparatus. The reproduction apparatus has a data transmitting unit converting data to be printed to a series of video data in accordance with a first clock... | 09/21/2004 |
| 6724415 | Image recorder and method of recording image An image quality on a recording material is influenced by, for example, the sensitivity of a developer for use in developing the recording material. Compensating for the lowering of the sensitivity of the developer requires increasing the amount of emission of a las... | 04/20/2004 |
| 6714225 | Image formation apparatus and image formation method When a halftone image region that is below a predetermined density is to be reproduced, a processing unit controlling an exposure unit selects an exposure pattern that can represent a record dot diameter within a range based on a predetermined rule from exposure pat... | 03/30/2004 |
| 6693660 | Method and apparatus for controlling an acousto-optic modulator A method is provided of modifying pulsed image data signals for controlling an acousto-optic modulator in an image setter system. The method comprises modifying the pulse widths of the image data signals in accordance with predetermined parameters so as t... | 02/17/2004 |
| 6683640 | Image recording method having increased recording element output or increased recording element spot size A recording method and a recorder for making it possible to eliminate a slight gap occurring every revolution of a drum (rotation gap) and a slight gap occurring for each column of a two-dimensional spot arrangement (column-to-column gap), enabling high-q... | 01/27/2004 |
| 6681055 | Formation method of two-dimensional code A formation method of a two-dimensional code is characterized by including the steps of: storing each cell having a bright pattern or a dark pattern as 0 or 1 in a two-dimensional array after reading a bit map file; calculating a number of round dots cont... | 01/20/2004 |
| 6677959 | Virtual true color light amplification A method is provided for enhancing a digital image without distortion of the color. The result is an adjusted image which preserves the essential color of each and every dot in the input digital image while varying the effective light gathering power--lik... | 01/13/2004 |
