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| Number | Title | Issue Date |
| 7589868 | Method and apparatus for creating 3D-prints and a 3-D printing system A method and apparatus for creating a print file for printing a 3-D print using a 3-D printing system is described, the 3-D print comprising a plurality of 3-D structures printed on a substrate, each 3-D print structure having a height with respect to the substrate.... | 09/15/2009 |
| 7486420 | Flexographic printing A method of screening a continuous tone image into a halftone representation for a flexographic printing operation can compensate for characteristic printing problems in highlight areas by selectively placing non-printing dots or pixels proximate highlight dots. The... | 02/03/2009 |
| 7436977 | Embedding variable watermark information in halftone screens Using correlated stochastic screens, time stamps, text messages, logos and other variable data can be incorporated into printed halftone images in real-time as invisible watermarks. A reference stochastic screen, which is suitable for halftoning the input image, is ... | 10/14/2008 |
| 7394567 | Data embedding scheme for duplex color laser printer A data embedding technique that adds a watermark in the form of embedded data in the RGB domain in a duplex color laser printer. The data embedding algorithm employs a two-color (cyan and magenta) patch based coding scheme. Each bit of raw data is coded by a rectang... | 07/01/2008 |
| 7385731 | Method and system for processing a multi-colour image A method and system are provided for processing digital multi-colour images for the reproduction thereof on a colour printing and/or copying system. Particularly, the printing and/or copying system is capable of complementary forming registered composite multi-colou... | 06/10/2008 |
| 7372594 | Image processing apparatus and method, and storage medium A pattern which does not appear at a flat portion in normal binarization processing is set as a code pattern, and a code formed from this pattern is attached. At this time, code attachment with little degradation in image quality is implemented by selecting an unnot... | 05/13/2008 |
| 7365881 | Halftone dot-growth technique based on morphological filtering A method for converting an original halftone bitmap image to a color converted halftone bitmap image. A set of asymmetrical morphological filters is provided. The original halftone bitmap image is segmented into blocks and for each block: apply the set of morphologi... | 04/29/2008 |
| 7359091 | Multi-bit output sampled threshold array halftoner Xerox Reference No. D/A0639A system and method for improving xerographic halftoning by magnifying a threshold array, interpolating the in-between values, enabling multiple thresholds to be accessed simultaneously and presented to multiple comparators, to cause multi... | 04/15/2008 |
| 7355756 | Color electrophotographic apparatus and method of processing an image produced thereby An image reproduction engine which causes toner to adhere to a development region of certain area located at a certain position within dots according to image reproduction data is utilized for image processing, wherein a halftone is expressed by means of halftone sp... | 04/08/2008 |
| 7292368 | Halftone proofing with inkjet printers Techniques are described for preparing halftone bitmap images for printing on inkjet printers. The techniques may involve exclusive use of low-density inks to reproduce highlight colors and means for reducing the amount of ink applied to the page within “solid” ... | 11/06/2007 |
| 7284937 | Machining apparatus A pulse generation means that generates a pulse each time an XY movable member moves linearly by a certain amount relative to a base is provided. A workpiece and a light and dark pattern member are provided on the base. A tool, a light and dark pattern scanning sens... | 10/23/2007 |
| 7284484 | Laser ablating of printing plates and/or printing rollers to decrease taper and TIR Apparatus for reducing variations in total indicated run-out and taper in a printing roller, includes a detector which detects variations in total indicated run-out and taper in a surface of the printing roller, and a laser which ablates the surface of the printing ... | 10/23/2007 |
| 7245402 | Flexographic printing A method of screening a continuous tone image into a halftone representation for a flexographic printing operation can compensate for characteristic printing problems in highlight areas by selectively placing non-printing dots or pixels proximate highlight dots. The... | 07/17/2007 |
| 7239420 | Corresponding lenticular imaging Disclosed herein is a method of making a corresponding lenticular image comprising: providing an output device in communication with a computer having a memory; receiving into the computer memory an interlaced image file; converting the interlaced image file into an... | 07/03/2007 |
| 7212688 | Computer program and method for converting an image to machine control data A method of transferring a representation of an image to a surface (12) of a building (14). The method comprising receiving the image as an image file, converting the image file to a raster file comprising a series of dots, scaling the raster file to t... | 05/01/2007 |
| 7196820 | Printer controller for a pagewidth printhead A printer controller for a pagewidth printer includes input interface circuitry configured to receive page description data in the form of bi-level data and contone data. Decompression circuitry is configured to decompress, in parallel processes, the bi-level data a... | 03/27/2007 |
| 7136185 | Corresponding lenticular imaging Disclosed herein is a method of making a corresponding lenticular image comprising: providing an output device in communication with a computer having a memory; receiving into the computer memory an interlaced image file; converting the interlaced image file into an... | 11/14/2006 |
| 7126619 | System and method for direct laser engraving of images onto a printing substrate An optical scanning system and method for laser engraving a plurality of data subrasters into a substrate to form a raster of engraved data defining an image on the substrate. Each subraster has a length dimension and a width dimension. The system includes a transpo... | 10/24/2006 |
| 7126724 | Flexographic printing A method of screening a continuous tone image into a halftone representation for a flexographic printing operation can compensate for characteristic printing problems in highlight areas by selectively placing non-printing dots proximate highlight dots. The non-print... | 10/24/2006 |
| 7126723 | Producing engraving-style halftone images An image processing scheme that applies engraving-style effects to an image is described. In one embodiment, an initial line pattern is warped to produce a warped line pattern, and an original image is mapped onto the warped line pattern to produce an engraving-styl... | 10/24/2006 |
| 7116445 | Image forming apparatus and image forming method An object of this invention is to eliminate graininess caused by superposition of noise on an image reproduced as a hard copy. To achieve this object, this invention provides an image forming apparatus which forms an image corresponding to bitmap image data, includi... | 10/03/2006 |
| 7085017 | Polar halftone methods for radial printing Disclosed are apparatus and methods for implementing polar halftone techniques that substantially reduce or eliminate interference patterns while printing on rotating circular media with a radial print system. In one embodiment, Cartesian image pixels are selected s... | 08/01/2006 |
| 7058202 | Authentication with built-in encryption by using moire intensity profiles between random layers This invention discloses new methods, security devices and apparatuses for authenticating documents and valuable articles which may be applied to any support, including transparent synthetic materials and traditional opaque materials such as paper. The invention rel... | 06/06/2006 |
| 7050638 | Binary-coding pattern creating method and apparatus, binary-coding pattern, and computer-readable recording medium in which binary-coding pattern creating program is recorded A method is provided for creating a binary-coding pattern to be used in binary-coding a multi-value image. The method includes the steps of: creating a basic pattern shape of the prospective binary-coding pattern by a first arithmetic operation; determining the sequ... | 05/23/2006 |
| 7046863 | Optimizing the advantages of multi-level rendering Systems and methods for optimizing the advantages of multi-level rendering of text and/or graphics at an output device by providing an alternate manner to perform multi-level rendering. A computer device, employed to render an image or graphical entity, is connected... | 05/16/2006 |
| 7025515 | Bit mask generation system A printing system is disclosed where a multi level pixel image (200) is converted into a half tone image (300) utilising a set of bit mask arrays (350-0 to 350-255) stored within a memory (310). The value of a multi l... | 04/11/2006 |
| 7006244 | Image rendering method and system using negative signals A xerographic marking device includes a source of pixels representative of digitized image information. A rendering image processor analyzes the pixels for an image characteristic, and based on the analysis assigns one of at least three values to each pixel. The thr... | 02/28/2006 |
| 7006256 | Watermarked image generator and method of embedding watermarks into an input image A watermarked image generator includes a watermark data source that inputs watermark data to a watermark embedding device. The watermark embedding device halftones the input image to generate the output image made of 2×2 binary patterns, the 2×2 binary patterns fo... | 02/28/2006 |
| 6943808 | System and method of reducing aliasing in printed images The system and method reduces aliasing which is formed by the patterns that are introduced by the halftone screens used in the printer. The system and method provides halftone-specific anti-alias filters for obtaining optimal effective resolution in printed images. ... | 09/13/2005 |
| 6938550 | System and method for print screen tonal control and compensation A print screen tonal control and compensation system and method are provided in which a compensated density curve is utilized to increase press predictability, performance, resources consumption, color variation, and quality. A computerized test pattern is generated... | 09/06/2005 |
| 6870633 | Printing device The printer driver receives print data from an application software program. When the received print data is font data, the printer driver transmits the font data as it is to the printer. When the print data is other than font data, but is vector data, for example, ... | 03/22/2005 |
| 6833933 | Stochastic screens for printing A method of generating a stochastic screen for use in printing a halftone containing image on a surface, where the generated stochastic screen comprises an array of threshold values each of which represents a halftone threshold at which pixels are printed at the cor... | 12/21/2004 |
| 6763144 | Halftone image reproduction Method and apparatus for performing halftoning of an image, using two 2-dimensional look up tables (LUTS). The first LUT receives coordinates of an image value and outputs a screen reference value which then serves, together with the image value as address for the s... | 07/13/2004 |
| 6748102 | Document alteration indicating system and method A system and method for detecting alteration of a document. The invention evaluates markings in half-tone fields by ascertaining a first dot count of dots isolated from the marking in the half-tone field of the document; forming an image of the marking; superimposin... | 06/08/2004 |
| 6741369 | Method for the operating an engraving member In a method for operating an engraving member in an electronic engraving machine to engrave printing forms, especially printing cylinders for intaglio printing, a stylus of the engraving member is controlled by an engraving signal and engraves a sequence of cups arr... | 05/25/2004 |
| 6731405 | Printing plates containing ink cells in both solid and halftone areas A method, associated software and resulting printing plate having both solid and halftone areas comprising ink cells. Ink cells may be provided in the solid areas according to a first pattern with a first density and size of cells per unit area, and in the halftone ... | 05/04/2004 |
| 6731408 | Method for producing a raster surface for use in the coloring of contact lens Method for producing a raster surface for use in the coloring of a contact lens, in which method an image surface consisting of picture elements is selected, the image surface is subjected to a tonal reduction operation and a threshold tone value is defined for it, ... | 05/04/2004 |
| 6717701 | Signal processing method In a method for processing signals in an electronic engraving machine for engraving printing forms, engraving control signals for guiding the stylus of an engraving element are obtained from engraving data representing predetermined tone values between “light” (... | 04/06/2004 |
| 6707572 | Filtering method to reduce pixel density A computerized method for controlling the density of pixels deposited by a print engine includes the steps of: (a) obtaining a two-dimensional pixel map of an image to be printed; (b) comparing a value of a first pixel element in the pixel map with values of pixel e... | 03/16/2004 |
| 6700679 | Image recording apparatus An image recording system is provided with an image data producing apparatus to produce and output halftone dot image data corresponding to a single sheet of output image, for each of plural colors successively; an image recording apparatus having a drum,... | 03/02/2004 |
