Patent application number | Description | Published |
20110012949 | PRINTING METHOD FOR REDUCING STITCH ERROR BETWEEN OVERLAPPING JETTING MODULES - A method of printing is described for a page-width printer including a line head having a plurality of jetting modules that are staggered in a page-width direction. In a set up procedure, a test pattern is printed using the nozzles of adjacent jetting modules, and the pattern is analyzed to detect a stitch error in the overlap regions. The results of this analysis is used to calculate a set of correction values to be applied to print data subsequently sent to nozzles of the adjacent jetting modules to make a correction for the stitch error. During a subsequent production run, the print data sent to the nozzles of the adjacent jetting modules is analyzed to sense an image content attribute, such as gray or density level, of the print data. These results of the analysis of the print data is then used to calculate a dynamic adjustment that is used to adjust the set of correction values calculated during the set up procedure. The line head is then used to print the corrected print data by applying the set of adjusted correction values to production print data subsequently sent to the jetting modules. | 01-20-2011 |
20110063354 | PRINTING METHOD FOR REDUCING STITCH ERROR BETWEEN OVERLAPPING JETTING MODULES - A method of printing is described for a page-width printer including a line head having a plurality of jetting modules that are staggered in a page-width direction. In a set up procedure, a test pattern is printed using the nozzles of adjacent jetting modules, and the pattern is analyzed to detect a stitch error in the overlap regions. The results of this analysis is used to calculate a set of correction values to be applied to print data subsequently sent to nozzles of the adjacent jetting modules to make a correction for the stitch error. During a subsequent production run, the print data sent to the nozzles of the adjacent jetting modules is analyzed to sense an image content attribute, such as gray or density level, of the print data. These results of the analysis of the print data is then used to calculate a dynamic adjustment that is used to adjust the set of correction values calculated during the set up procedure. The line head is then used to print the corrected print data by applying the set of adjusted correction values to production print data subsequently sent to the jetting modules. | 03-17-2011 |
20140002524 | CORRECTING WEB SKEW IN A PRINTING SYSTEM | 01-02-2014 |
20140002529 | CORRECTING WEB SKEW IN A PRINTING SYSTEM | 01-02-2014 |
20140118433 | WEB SKEW COMPENSATION IN A PRINTING SYSTEM - A printing system includes one or more lineheads that jet ink onto a first side of a print media. At least one roller supports a second side of the print media as the print media is transported through the printing system. A roller deformation adjustment mechanism abuts at least one roller and is configured to apply a force to the roller to deform the roller. The deformation of the roller compensates for web skew by changing the relative timing of ink flight times from the linehead to the first side of the print media. The linehead can be disposed on a movable support. The printing system can also include one or more linehead skew adjustment mechanisms configured to move the movable support to adjust a skew of the linehead. | 05-01-2014 |
20140118452 | WEB SKEW COMPENSATION IN A PRINTING SYSTEM - A printing system includes one or more lineheads that jet ink onto a first side of a print media. At least one roller supports a second side of the print media as the print media is transported through the printing system. A roller deformation adjustment mechanism abuts at least one roller and is configured to apply a force to the roller to deform the roller. The deformation of the roller compensates for web skew by changing the relative timing of ink flight times from the linehead to the first side of the print media. The linehead can be disposed on a movable support. The printing system can also include one or more linehead skew adjustment mechanisms configured to move the movable support to adjust a skew of the linehead. | 05-01-2014 |
Patent application number | Description | Published |
20140063098 | ALIGNING PRINT DATA USING MATCHING PIXEL PATTERNS - A method for aligning multi-channel digital image data for a digital printer having a plurality of printheads is described. A test pattern including test pattern indicia printed using individual printheads is scanned and analyzed to detect locations of the printed test pattern indicia. One of the printheads is designated to be a reference printhead, and one or more of the other printheads are designated to be non-reference printheads. Spatial adjustment parameters are determined for each of the non-reference printheads responsive to the detected test pattern indicia locations. Digital image data for the non-reference printheads is modified by designating an input pixel neighborhood within which an image pixel should be inserted or deleted, comparing the image pixels in the input pixel neighborhood to a plurality of predefined pixel patterns to identify a matching pixel pattern; and determining a modified pixel neighborhood responsive to the matching pixel pattern. | 03-06-2014 |
20140063099 | ALIGNING PRINT DATA FOR OVERLAPPING PRINTHEADS - A method for aligning multi-channel digital image data for a digital printer having an array of printheads for each of a plurality of channels is described. A test pattern including test pattern indicia printed using individual printheads is scanned and analyzed to detect locations of the printed test pattern indicia. For each array position, one of the printheads is designated to be a reference printhead, and one or more of the other printheads are designated to be non-reference printheads. Spatial adjustment parameters are determined for each of the non-reference printheads responsive to the detected test pattern indicia locations. Digital image data to be printed with the non-reference printheads is modified in accordance with the determined spatial adjustment parameters. | 03-06-2014 |
20140063513 | MODIFYING PRINT DATA USING MATCHING PIXEL PATTERNS - A method for aligning multi-channel digital image data for a digital printer having a plurality at least one printhead is described. One or more spatial adjustment parameters are determined for each of the printheads. The spatial adjustment parameters can be determined by comparing locations of test pattern indicia in a printed test pattern to predefined reference indicia locations. Digital image data for the non-reference printheads is modified by designating an input pixel neighborhood within which an image pixel should be inserted or deleted, comparing the image pixels in the input pixel neighborhood to a plurality of predefined pixel patterns to identify a matching pixel pattern; and determining a modified pixel neighborhood responsive to the matching pixel pattern. | 03-06-2014 |
20140285828 | A METHOD TO DETERMINE AN ALIGNMENT ERRORS IN IMAGE DATA AND PERFORMING IN-TRACK ALIGNMENT ERRORS CORRECTION USING TEST PATTERN - A method for aligning image data printed on a receiver medium in a multi-printhead printer that includes printing a test pattern including features separated by predefined test pattern feature separations, where some features are printed with a first printhead and some features printed with a second printhead. An image of the printed test pattern is analyzed to determine a first camera pixel separation between two features printed with the first printhead, which is used to determine a camera scale factor. The camera scale factor is used to scale a second camera pixel separation between a feature printed with first printhead and a feature printed with the second printhead. The scaled second camera pixel separation is compared to a corresponding test pattern feature separation to determine an alignment error, which is used to adjust the alignment of the image data printed with at least one of the printheads. | 09-25-2014 |
20140285829 | MULTI-PRINT HEAD PRINTER FOR DETECTING ALIGNMENT ERRORS AND ALIGNING IMAGE DATA REDUCING SWATH BOUNDARIES - A multi-printhead printing system, including first and second printheads adapted to print on a receiver medium. An alignment process includes printing a test pattern including features separated by predefined test pattern feature separations, where some features are printed with a first printhead and some features printed with a second printhead. An image of the printed test pattern is analyzed to determine a first camera pixel separation between two features printed with the first printhead, which is used to determine a camera scale factor. The camera scale factor is used to scale a second camera pixel separation between a feature printed with first printhead and a feature printed with the second printhead. The scaled second camera pixel separation is compared to a corresponding test pattern feature separation to determine an alignment error, which is used to adjust the alignment of the image data printed with at least one of the printheads. | 09-25-2014 |
Patent application number | Description | Published |
20080316940 | METHODS AND SYSTEMS FOR USING MANAGED PORT CIRCUITRY TO MAP CONNECTIONS AMONG STRUCTURED CABLING APPARATUS AND NETWORK DEVICES - A managed port circuit includes a detection circuit that is disposed in a communication channel between a first local port and a second local port and a controller that is coupled to the detection circuit and is operable to configure the detection circuit in a detection configuration in which the first and second local ports are connected to the controller and a second pass through configuration in which the first and second local ports are connected to each other via the communication channel, the controller being further operable to determine when an end device is connected to one of the first and second local ports when the detection circuit is in the detection configuration. | 12-25-2008 |
20100266117 | Network Switch with Integrated Cable Termination Locations - A network switch that can directly receive and connect to telecommunications cables includes: a body; a first panel mounted to the body; a first plurality of ports located in the first panel, each of the first plurality of ports configured to receive a telecommunications cable; a second panel mounted to the body; a second plurality of ports located in the second panel, each of the second plurality of ports configured to receive a patch cord; and electronic circuitry housed in the body for conducting network switching operations, the electronic circuitry being connected with the first plurality of ports and the second plurality of ports. Such a network switch can receive a cable directly, rather than requiring an intermediate patch panel, and therefore can simplify either an interconnect or a cross-connect telecommunications system. | 10-21-2010 |
20130201993 | NETWORK SWITCH WITH INTEGRATED CABLE TERMINATION LOCATIONS - A network switch that can directly receive and connect to telecommunications cables includes: a body; a first panel mounted to the body; a first plurality of ports located in the first panel, each of the first plurality of ports configured to receive a telecommunications cable; a second panel mounted to the body; a second plurality of ports located in the second panel, each of the second plurality of ports configured to receive a patch cord; and electronic circuitry housed in the body for conducting network switching operations, the electronic circuitry being connected with the first plurality of ports and the second plurality of ports. Such a network switch can receive a cable directly, rather than requiring an intermediate patch panel, and therefore can simplify either an interconnect or a cross-connect telecommunications system. | 08-08-2013 |
20140211809 | NETWORK SWITCH WITH INTEGRATED CABLE TERMINATION LOCATIONS - A network switch that can directly receive and connect to telecommunications cables includes: a body; a first panel mounted to the body; a first plurality of ports located in the first panel, each of the first plurality of ports configured to receive a telecommunications cable; a second panel mounted to the body; a second plurality of ports located in the second panel, each of the second plurality of ports configured to receive a patch cord; and electronic circuitry housed in the body for conducting network switching operations, the electronic circuitry being connected with the first plurality of ports and the second plurality of ports. Such a network switch can receive a cable directly, rather than requiring an intermediate patch panel, and therefore can simplify either an interconnect or a cross-connect telecommunications system. | 07-31-2014 |