Patent application number | Description | Published |
20080266343 | Multipass printing method - A multipass printing method comprises determining at the end of a printing pass if at least some dot depositing elements of at least one printhead require a servicing operation; in case the determination is positive, printing at least one incomplete printing pass in which at least the dot depositing elements of said at least one printhead that require a servicing operation are not operated to print; at the end of said incomplete printing pass, servicing at least said dot depositing elements of said at least one printhead; and printing at least one compensating printing pass adding to the information to be printed in said compensating printing pass at least part of the information that failed to be printed by said dot depositing elements of said at least one printhead in said at least one incomplete printing pass. | 10-30-2008 |
20080267684 | Printing using roll-based print media - A roll-based printer and method of loading the same is presented. The method comprises: sliding a roll of print media onto a print media spindle so that the roll of print media is positioned closer to a first end of the print media spindle than a second end of the print media spindle; loading the spindle onto a supporting assembly so that the spindle is rotatably supported by the supporting assembly and the first end of the print media spindle is at the end of the printer which is opposite to an end of the printer having a media detecting unit for detecting the presence of print media being fed to the printer; feeding the print media to the printer from the loaded spindle; detecting the position of an edge of the print media fed to the printer; and adjusting a starting position of the print head based on the detected position of an edge of the print media. | 10-30-2008 |
20090002429 | PRINTER CALIBRATION - A printer and method of calibrating such a printer is presented. The method comprises: printing a reference pattern on print media; depositing ink over the printed reference pattern; printing a test pattern over the deposited ink to form an interference pattern; and determining an ink density value that results in an acceptable deformation of the printing media based on an optical evaluation of the interference pattern. | 01-01-2009 |
20090128593 | PRINTERS AND PRINTHEAD CLEANING PRIMARILY IN PAGE-WIDE ARRAY PRINTERS - A method of printing on a substrate and a printer are provided. The method uses a printer comprising a print head and a mask having a hole therethrough, the mask being disposed between the print head and the substrate, and comprises aligning the hole with the print head; printing on the substrate through the hole; and misaligning the hole with the print head so that the print head is covered by the mask. The method may allow the servicing of a print head in the array while the printer is printing on the substrate using at least one of the remainder of the print heads in the array. | 05-21-2009 |
20090128594 | DEFECTIVE NOZZLE REPLACEMENT IN A PRINTER - Printing is performed at a full resolution using a first set of nozzles and a second set of nozzles arranged on a printhead. Printing is performed at less than the full resolution using the first set of nozzles less any nozzles in the first set of nozzles that have been determined to be defective. T he second set of nozzles is not used for printing at less than the full resolution except for a subset of nozzles in the second set of nozzles that are used to replace nozzles from the first set of nozzles that have been determined to be defective. | 05-21-2009 |
20090128599 | METHOD AND PRINTER FOR MULTI-PASS PAGE-WIDE ARRAY PRINTING - A method of printing an image on a substrate using a page-wide-array printer and a page wide array printer is provided. The method comprises printing a first portion of the image as relative movement occurs between the substrate and the print heads, and printing a second portion of the image as relative movement occurs between the substrate and the print heads, such that there exists an area of overlap between the first portion of the image and the second portion of the image. The substrate may be moved in a first direction relative to the print heads whilst the first portion of the image is printed, moved in a second direction opposite to the first direction; and moved in the first direction again whilst the second portion of the image is printed. The substrate may be printed whilst the substrate is moved in the second direction. | 05-21-2009 |
20090153600 | SYSTEM AND METHOD FOR DETECTING FLUID EJECTION VOLUME - A fluid ejection device includes an actuator, moveable to actuate a fluid pump, an optical sensor, a flag, affixed to the actuator and positioned to block the optical sensor with motion of the actuator, and a controller, coupled to the actuator and the optical sensor. The controller is configured to determine a volume of fluid pumped by the pump by detecting a change in a degree of blockage of the sensor by the flag. | 06-18-2009 |
20090262380 | CONCURRENT IMAGE AND DIAGNOSTIC PATTERN PRINTING - Print image-quality defects are diagnosed by printing an image and one or more diagnostic patterns concurrently. | 10-22-2009 |
20090303514 | AUTOMATIC ARRANGEMENT OF NESTED IMAGES AS A FUNCTION OF ASSIGNED PRINT MODES - Images selected for printing are assigned respective print-speed modes so that at least first and second of said images are assigned to a relatively fast print mode and at least a third image is assigned to a relatively slow print mode. The images are arranged as a function of print-speed mode so that said first and second images are in a first row and so that said third is in a second row. The images are then printed on real print media, with the first row being printed using a relatively fast print speed and the second row being printed at a relatively slow print speed. | 12-10-2009 |
20100277525 | METHOD OF PRINTING AND PRINTER - A method of printing on a substrate in a page-wide array printer comprises printing on the substrate as the substrate is moved through a printing zone of the printer in a first direction, and printing on the substrate as the substrate is moved through the printing zone in a second direction different to the first direction. | 11-04-2010 |
20110267392 | CHANGING PRINTMODES ACCORDING TO OBJECTIVE - In one embodiment, a plot width for an image to be printed is determined. A carriage return time that is a function of the plot width and a first carriage speed in a first printmode is calculated. A change is made from the first printmode to a second printmode according to an objective if the carriage return time is less than a media advance time. | 11-03-2011 |
20110292111 | INKJET PRINTING APPARATUS AND METHOD FOR PRINTING A PLURALITY OF PIXELS - In a method for printing a plurality of pixels, each pixel of a plurality of pixels is printed by controlling an inkjet print head to provide for each pixel at least two ink drops at different positions in a print head movement direction, the print head having a plurality of trenches supplying ink to a plurality of sets of nozzles. The at least two ink drops forming first pixels of said plurality of pixels are fired from the same trench. | 12-01-2011 |
20110292436 | METHOD FOR SELECTING ONE OF A PLURALITY OF PRINT MODES FOR PRINTING A DOCUMENT AND PRINTING APPARATUS - A method and a print apparatus are described. The method and the print apparatus allow for selecting from a plurality of print modes a print mode for a whole page of a document to be printed dependent on a print material coverage of the whole page of the document to be printed. | 12-01-2011 |
20120013674 | Virtual Pen Calibration - A method for pen drop weight calibration includes altering an image prior to printing based on the difference in printing performance of a first pen and a second pen to produce altered image data, the first pen and the second pen being disposed in the same printer. The altered image data is then printed with the printer. | 01-19-2012 |
20120092398 | FILL REDUCTION FOR PRINTING - Systems and methods of fill area reduction during printing are disclosed. An example of a method includes identifying a fill area. The method also includes generating a depletion matrix corresponding to the fill area. The depletion matrix identifies which of the plurality of print heads to deactivate. The method also includes selectively adjusting output from the plurality of print heads based on the depletion matrix in order to reduce fill area during printing. | 04-19-2012 |