| Patent application number | Description | Published |
|---|
| 20080253783 | SUBJECTIVE AND OBJECTIVE UNIVERSAL SUBSTRATE PRINTER ICC PROFILE SELECTION - Forming a multicolor image on a receiver member wherein a database of custom color profiles based on substrate physical properties and printing process characteristics is established. A set of universal color profiles is determined based on physical properties of substrates from clustered custom profiles. One universal color profile is assigned to a target substrate from the set of universal color profiles based on objective or subjective feedback. Thereafter, a multicolor toner image is formed on the receiver member with toners of at least three different colors of toner pigments which form various combinations of colors at different pixel locations on the receiver member to form the multicolor toner image thereon using the assigned one color profile. Based on objective or subjective feedback, the selected one universal color profile is modified, or a different universal color profile is selected. | 10-16-2008 |
| 20100097657 | ADAPTIVE EXPOSURE PRINTING AND PRINTING SYSTEM - One or more printers or printing systems are connected to a scanning device. Each printer includes one or more color modules that are used during a printing operation. A printer prints a target for each color module or color channel. The printed targets are then scanned by the scanning device. The printed targets may be rotated to any angle and then scanned by the scanning device. The scanned raster data is processed by a controller to detect non-uniformities in at least one density image and to generate one or more correction profiles for the printer. When an image is to be printed, one or more controllers receive the image data and use the one or more correction profiles to correct or compensate for the non-uniformities during the exposure process. | 04-22-2010 |
| 20100156929 | Ridge-based color gamut mapping - Techniques for color gamut mapping between source and destination devices are provided. The mapping is performed in a device-independent color space using color ridges of the primary and secondary color ramps of the source and destination devices. An iterative learning process is also provided to adapt the color gamut mapping to a user's perceptual preferences. | 06-24-2010 |
| 20100224090 | METHODS OF REDUCING GRAIN AND TEXTURE IN A PRINTED IMAGE - Methods of improving image quality by reducing grain and texture in a printed image are provided. According to one embodiment, a method of reducing grain and texture in an image includes the steps of providing a light color toner and a dark color toner, providing an aperiodic micrononuniformity map, using the aperiodic micrononuniformity map to determine an acceptable domain that includes a plurality of combinations of the light color toner and the dark color toner, and forming an image by selecting one combination of the light color toner and the dark color toner from the plurality of combinations of the light color toner and the dark color toner. | 09-09-2010 |
| 20110012919 | MULTILEVEL HALFTONE SCREEN AND SETS THEREOF - A three-dimensional halftone screen is provided that is suited for multilevel printing. The three-dimensional halftone screen includes a plurality of planes each corresponding to one or more input intensity levels of an input RIPped pixel. Within the planes are screen dots, each associated with one or more output exposure intensity values representing an intensity of an exposure dot corresponding to the input RIPped pixel. | 01-20-2011 |
| 20110141491 | AUTOMATIC HIGH-PRECISION REGISTRATION CORRECTION SYSTEM WITH LOW RESOLUTION IMAGING - System and apparatus for automatically correcting alignment of printer writers using a scanner for calculating a calibration parameter. The calibration parameter is used to adjust or maintain the alignment of the printer writers. | 06-16-2011 |
| 20110141525 | MULTI-LEVEL HALFTONE SCREENS - The present invention relates to methods of improving color image quality by optimization of the gray level screens including blending a plurality of gray level screens to reducing the color grain noise and maintaining larger color gamut for the pictorial color imagery in the color printing systems that utilize gray level (multi-level) printing. | 06-16-2011 |
| 20110157611 | METHOD FOR GENERATING PERSONALIZED DOCUMENTS - A computer implemented method of producing personalized documents comprising the steps of inputting handwritten alphanumeric characters which are then mapped into at least one set of text characters. A textural document is entered into the computer and is transcribed into a set of text characters corresponding to the input handwritten alphanumeric characters. The document can be printed and will contain text in the handwriting of the person whose alphanumeric characters were used as input. | 06-30-2011 |
| 20110157615 | SYSTEM FOR GENERATING PERSONALIZED DOCUMENTS - A system with for capturing and storing an image of a user's handwritten alphanumeric characters. The characters are stored in memory in association with a standard alphanumeric character set such as an ASCII character set. A text document can then be transcribed into the stored handwritten alphanumeric characters for resembling a handwriting of the user. The characters can be represented by mathematical functions such as Taylor Series or McLauren Series and can be digitally reproduced based on the stored functions. | 06-30-2011 |
