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Kartheek
Kartheek Chandu, Boulder, CO US
| Patent application number | Description | Published |
|---|---|---|
| 20100053241 | Non-interfering flushing method for inkjet printers - A method is disclosed. The method includes receiving an overlay having a flushing pattern to flush nozzles of an inkjet print head, printing a page of print data and flushing the nozzles of the inkjet print head during the printing of the page of print data as indicated by the flushing pattern. The flushing of a nozzle does not occur at a data point of the flushing pattern corresponding to a data point of the page of print data. | 03-04-2010 |
| 20100053245 | High speed dual pass ink jet printer - A method is disclosed. The method includes performing a first print pass to print a first data point on a medium using a first set of ink jet nozzles and performing a second print pass to print the first data point on the medium with a second set of ink jet nozzles. | 03-04-2010 |
| 20100231978 | PRINTING WITH ALTERNATIVE HALFTONE PATTERNS IN INK JET PRINTING TO REDUCE INK PENETRATION - Systems and methods of printing to a tangible medium provide for reducing ink penetration via the controlled selection of halftone patterns. One method includes steps of printing to the tangible medium (e.g., via a multicolor ink supply such as CMYK) using a plurality of initial halftone patterns, measuring ink absorption of the tangible medium in response to printing to the tangible medium, and determining a subset of the plurality of initial halftone patterns based on the absorption measurement. The method also includes printing a print job to the tangible medium based on the subset of the plurality of initial halftone patterns. For example, a print controller may be reprogrammed with the subset of the plurality of initial halftone patterns to print a print job to reduce the amount of ink applied to the tangible medium. | 09-16-2010 |
Kartheek Chandu, Longmont, CO US
| Patent application number | Description | Published |
|---|---|---|
| 20100045722 | CORRECTION OF PRINT ENGINE ARTIFACTS USING AN ITERATIVE HALFTONING SEARCH ALGORITHM - Methods and systems herein provide for reducing artifacts during printing. One printing system is operable to prepare a continuous tone image (CTI) for printing onto a print medium by generating an initial half tone image (HTI) based on the CTI. The printing system includes a printer and a print controller. The print controller filters the initial HTI and the CTI with a perceptual filter and determines an error between the filtered CTI and the filtered HTI. The print controller prints the HTI via the printer to determine printer artifacts and processes a scanned version of the printed HTI to determine an error between the filtered CTI and the scanned and filtered HTI. This processing updates the initial HTI and reduces the error between the filtered CTI and the filtered HTI. | 02-25-2010 |
| 20110148968 | MULTI-PASS CALIBRATION IN FIXED PRINTHEAD ARRAY PRINTERS - Methods and apparatus herein provide for automated calibration of multiple printheads used in a multi-pass printing system. Aspects hereof print a plurality of gray scale printed patterns each printed pattern corresponding to a gray scale value for each of the multiple printheads. The printed patterns are then measured to determine the intensity (e.g., optical density) of each of the printed patterns. A measurement function is derived from the measured intensity and gray scale levels used to print each pattern. Calibrated transfer functions are then determined from the measurement function and target function where each calibrated transfer function relates, for a corresponding printhead, an input gray scale level of a pixel in an image to be printed to a calibrated gray scale level to use for the corresponding printhead when operating in multi-pass mode. | 06-23-2011 |
Kartheek Karna, Fargo, ND US
| Patent application number | Description | Published |
|---|---|---|
| 20080247139 | ELECTRICAL CIRCUIT ASSEMBLY FOR HIGH-POWER ELECTRONICS - An electrical circuit assembly includes an electrical circuit substrate having a first side; a heat sink including a metal base plate having a first side and a second side, and a plurality of fins extending from the second side; and a thermally conductive and electrically insulating adhesive directly interconnecting at least a portion of the first side of the electrical circuit substrate with the first side of the base plate. | 10-09-2008 |
Kartheek Nagasuri, Bangalore IN
| Patent application number | Description | Published |
|---|---|---|
| 20110242327 | INTELLIGENT CAMERA DISPLAY BASED ON SELECTIVE SEARCHING - A system and method for intelligent camera display based on selective searching is provided. The method includes searching a plurality of devices for compliance with a search criteria, and performing an action substantially simultaneously on all devices in the plurality of devices that are in compliance with the search criteria. | 10-06-2011 |