Patent application number | Description | Published |
20090021541 | PRINTER CONTROL SYSTEM AND METHOD FOR CHANGING PRINT MASK HEIGHT - A system and a method for improving the quality of prints using a print mask for a printer with at least one printhead with a plurality of dot forming elements arranged in dot forming element sections, and at least one of the masks are altered so that mask data corresponding to at least one complementary set of dot forming elements is activated or deactivated in response to the paper location and the dot forming element section is shifted as the printhead passes a transition position. As the mask size is reduced, for example, the mask contents are shifted to one end of the printhead. This remapping of the mask within the head allows the page advance distance to be changed to the new page advance distance only once. | 01-22-2009 |
20090033694 | PRINTER CONTROL SYSTEM AND METHOD FOR ARTIFACT FREE AND BORDERLESS PRINTING - A system and a method for improving the quality of prints using a print mask for a printer having at least one printhead with a plurality of dot forming elements arranged in complementary dot forming element groups by section to prevent artifacts by compensating for bad dot forming elements on a print head. The method including the steps of identifying each bad dot forming element, identifying and setting up a threshold for each complementary dot forming element group corresponding to one or more bad dot forming elements, and creating a compensation print mask having one or more intermediate print sections by reassigning printing duty cycle from the bad dot forming elements to their respective complementary dot forming elements before printing using the compensation print mask. | 02-05-2009 |
20100013878 | BI-DIRECTIONAL PRINT MASKING - A method for reducing banding artifacts for bi-directional multi-pass printing on an inkjet printer utilizing a printhead with a plurality of ink nozzles includes defining different print masks to be used for leftward and rightward printing passes such that both the order of ink laydown and the timing between ink laydown on different passes are each substantially constant for a given horizontal position within the image, independent of the vertical position within the image; and printing an input image on the inkjet printer with the defined print masks using a bi-directional multi-pass print mode. | 01-21-2010 |
20100091051 | NONUNIFORM MASK CIRCULATION FOR IRREGULAR PAGE ADVANCE - A method for reducing banding artifacts in a printed image, including irregularly advancing a media that will be printed upon while employing an entire single mask for marking elements of a printhead; and calculating a difference between an irregular advance amount of the media versus a nominal advance amount of the media. Finally, the single mask is nonuniformly circulated by the difference calculated in order to compensate for the media being irregularly advanced. | 04-15-2010 |
20100238219 | IMAGE DATA EXPANSION BY PRINT MASK - A method for using a processor to process image data received from an image data source in preparation for multipass printing, comprising multitoning the image data to produce a multitoned image, using the multitone level of a pixel in the multitoned image to select a plane of a print mask, using the location of the pixel in the multitoned image to select a cell of output pixels in the selected plane of the print mask, and copying the selected cell of output pixels to corresponding locations within a print buffer. | 09-23-2010 |
20110116107 | IMAGE DOWN-SAMPLING WITH FINE DETAIL ENHANCEMENT - A method for resizing an input digital image having input pixel values to produce an output digital image having output pixel values, wherein the output digital image has a lower resolution and wherein single pixel width details in the input digital image are preserved, the method being performed by a processor and comprising: determining an output pixel value for the output digital image by interpolating within a corresponding neighborhood of image pixels in the input digital image; detecting whether the input digital image contains a fine detail within the corresponding neighborhood of image pixels; adjusting the output pixel value when a fine detail is detected; and repeating steps a)-c) for a plurality of output pixels. | 05-19-2011 |
20120001975 | EFFICIENT DATA SCANNING FOR PRINT MODE SWITCHING - A method for printing images on an inkjet printer having grayscale print and color print modes, comprising performing an inspection process to inspect lines of image data in an inspection region downstream from a current swath of image data to determine a print mode for a future swath of image data. The inspection process includes inspecting the lines of image data in the inspection region according to a predetermined inspection sequence, determining whether an inspected line contains any pixels to be printed with color ink, and if so terminating the inspection process and designating that the future swath is to be printed with the color print mode; otherwise, if none of the lines are found to contain any pixels to be printed with color ink, designating the future swath to be printed with the grayscale print mode. | 01-05-2012 |
20120062932 | ANTI-ALIAS PROCESSING WITH LOW-RESOLUTION IMAGE - A method for printing low-resolution digital image data received from a host computer on a digital printer, comprising: receiving low-resolution image data; receiving mask image data, wherein the mask image data is formed by automatically analyzing the full-resolution image data or the low-resolution image data, the mask image data providing an indication of image regions in the low resolution image data that would benefit from the application of an anti-aliasing algorithm; using a data processor in the digital printer to resize the low-resolution image data, forming high-resolution image data at a higher resolution than the low-resolution image data; using the data processor in the digital printer to apply an anti-aliasing method to portions of the high-resolution image data corresponding to the indicated image regions in the mask image data, thereby providing anti-aliased image data; and printing the anti-aliased image data on the digital printer. | 03-15-2012 |
20130106962 | INK DISTRIBUTION CONFIGURATION FOR CARRIAGE INKJET PRINTER | 05-02-2013 |
20130106964 | INK TANK CONFIGURATION FOR INKJET PRINTER | 05-02-2013 |
20140063105 | INKJET PRINTING METHOD USING MODE SWITCHING - A method for printing an input digital image using and inkjet printer being adapted to print horizontal strips of print image data using one or more print passes. The method includes determining print image data and control channel image data for a particular strip responsive to input code values for corresponding input pixels, the control channel image data providing an indication of the number of print passes that should be used to print the input code values. A number of print passes for the particular strip is determined responsive to the control channel image data, and the inkjet printer is controlled to print the particular strip of print image data using the determined number of print passes. | 03-06-2014 |