Eastman-kodak Company

Nexpress Solutions, Inc.

Christopher B Liston

Patrick Metzler

Karlheinz Walter Peter

Matthias Hermann Regelsberger

James Alan Katerberg

Ingo Klaus Dreher

Thomas Nathaniel Tombs

Todd Mathew Spath

Heiko Hunold

Stacy M Munechika

Douglas Edward Garman

Carolyn Rae Ellinger

Michael Thomas Dobbertin

Timothy John Young

John R Thompson

Robert Michael Peffer

Donald Calvin Buch

Ralph Petersen

David J Fuest

Donald Saul Rimai

John W May

Rodney Ray Bucks

Thomas Allen Henderson

Gregory P Mahoney

Frank Pierel

Michael H Green

G&uuml;nther Voss

Stephan Walter Pareigis

Michael Mordhorst

Michael Kowalczyk

An electrode film includes a first electrode pattern having a first set of parallel conductive electrodes and a second electrode pattern having a second set of parallel conductive electrodes disposed on a surface of a transparent film. The conductive electrodes in the first and second electrode patterns are conductive mesh patterns including a pattern of open areas and are arranged in an interlaced pattern. The first and second electrode patterns are configured to be connected to respective sources of electrical power supplying respective waveforms to generate a time-varying electric field pattern above a surface of the electrode film.

Open electrodes for in-plane field generation

An electrode film includes a first electrode pattern having a first set of parallel conductive electrodes and a second electrode pattern having a second set of parallel conductive electrodes disposed on a first surface of a transparent film, wherein elements of the first electrode pattern do not cross over elements of the second electrode pattern. A third electrode pattern having a third set of parallel conductive electrodes is disposed on a second surface of the transparent film, wherein the first, second and third sets of parallel conductive electrodes are arranged in an interlaced pattern. The electrode patterns are configured to be connected to respective power sources of electrical power supplying respective waveforms to generate a time-varying electric field pattern above a surface of the electrode film.

Double-sided electrodynamic screen films

An electrode film is fabricated by using a flexographic printing system to print a first electrode pattern including a first set of parallel electrodes and a second electrode pattern including a second set of parallel electrodes onto a first surface of a transparent film using a catalytic ink, wherein elements of the first electrode pattern do not cross over elements of the second electrode pattern. The flexographic printing system prints a third electrode pattern including a third set of parallel electrodes onto a second surface of the transparent film using the catalytic ink, wherein the first, second and third sets of parallel electrodes are arranged in an interlaced pattern. A conductive metallic material is electrolessly plated onto the catalytic ink such that the elements of the first, second and third electrode patterns become conductive.

Fabricating double-sided electrodynamic screen films

Color registration errors are corrected for print jobs including periodic image content. Pixels values for a set of document pages are analyzed to identify the presence a periodic pattern of ink coverage having a repeat period. A first subset of document pages are printed and the resulting color registration errors are measured and analyzed to determine a periodic pattern of color registration errors. A repeating pattern of color registration correction values are determined corresponding to the periodic pattern of color registration errors. A second subset of the document pages is printed using the determined repeating pattern of color registration correction values.

Registration correction for periodic ink coverage patterns

A method for correcting image plane registration errors for a multi-channel printing system that prints documents of a particular document-type classification having a variable number of pages. An image plane registration error database stores image plane registration error information characterizing image plane registration errors as a function of page number for each of a plurality of different page-count classifications. A page-count classification is determined for a document to be printed, and image plane registration correction values are determined for each page based on the stored image plane registration error information associated with the determined page-count classification, wherein the image plane registration correction values for each page are determined based on the stored image plane registration error information for the corresponding page number. The image data for each document page of the document is then printed responsive to the corresponding image plane registration correction values.

Color registration error correction using page count

Color registration errors are corrected for print jobs including periodic image content. A first subset of document pages are printed and the resulting color registration errors are measured. The measured color registration errors are analyzed to identify the presence of a periodic pattern of color registration errors having a repeat period. A repeating pattern of color registration correction values are determined corresponding to the periodic pattern of color registration errors. A second subset of the document pages is printed using the determined repeating pattern of color registration correction values.

Correction of periodic registration errors

A method for high-speed multi-color printing includes at least one high-resolution sensor array (), wherein an output of the high-resolution sensor array is transmitted to a controller (); at least one low-resolution sensor array (); wherein the controller calculates a correction for stitch; wherein the controller, based on the calculated correction, adjusts a timing of image data provided to individual print elements comprising print stations () to aligned an output of the print elements; and wherein the low-resolution sensor array provides full page viewing.

Method for correcting stitching errors in multi-color high-speed printing

A multi-resolution imaging device () for a high-speed multi-color printer includes at least one high-resolution sensor array (), wherein an output of the high-resolution sensor array is transmitted to a controller (); at least one low-resolution sensor array (); wherein the controller calculates a correction for stitch; wherein the controller, based on the calculated correction, adjusts a timing of image data provided to individual print elements comprising print stations () to aligned an output of the print elements; and wherein the low-resolution sensor array provides full page viewing.

High-speed multi-color printing

A method of detecting and correcting imaging defects in a media printed on a high-speed multi-color printer includes providing a multisensory imaging device (); illuminating the media; sensing images on the media at high resolution with at least one high resolution sensor () as it passes the multisensory imaging device; transmitting an output of the high resolution sensor to a controller (); sensing images on the media at low resolution with at least one low resolution sensor (); calculating a correction for stitch; adjusting a timing of image data provided to image writers to align the inkjets to produce an optimal cross-track line; and providing a full page view from the low resolution sensor.

Multi-resolution segmented image sensor

A print engine synchronization system apparatus enables the movement of a first print engine dielectric support member (DSM) having one or more image frames as well as the movement of a second print engine DSM having one or more image frames by monitoring a first frame signal from the moving first print engine DSM and a second frame signal from the moving second print engine DSM. An offset is determined for each of corresponding pairs of frames from the one or more image frames of the first and second print engine DSM and the determined offset for each corresponding pair of frames is compared to a target offset to maintain synchronization between the first and second print engines on a frame by frame basis by adjusting a second print engine DSM velocity based on the comparison of the determined offset and the target offset.

Print engine synchronization system and apparatus

A print engine synchronization method enables the movement of a first print engine dielectric support member (DSM) having one or more image frames as well as the movement of a second print engine DSM having one or more image frames by monitoring a first frame signal from the moving first print engine DSM and a second frame signal from the moving second print engine DSM. An offset is determined for each of corresponding pairs of frames from the one or more image frames of the first and second print engine DSM and the determined offset for each corresponding pair of frames is compared to a target offset to maintain synchronization between the first and second print engines on a frame by frame basis by adjusting a second print engine DSM velocity based on the comparison of the determined offset and the target offset.

Method for print engine synchronization

The invention relates to a method and apparatus for minimizing the influence of register differences in multicolor printing, in particular in digital printing processes, register values () in the transport direction (), which are different transversely with respect to this direction being set to a value between the extremes ('). The invention is intended to carry out a development such that the influence of register differences on the image quality can be minimized reliably and to a great extent. This is achieved by a number of individual values of the register values () being measured and an average value (&#x2032;) being determined from these and brought into alignment with the average value (&#x2032;) from at least one further color printing unit (&#x2032;&#x2033;).

Method and apparatus for minimizing the influence of register differences

A printing machine having at least one printing unit whose image cylinder is driven by friction by an element to which the image is transferred. The influence of a change in the application of print is kept as small as possible, by the width of image cylinder and element being at least so much wider than the maximum width of the image to be transferred that the rotational speed of the image cylinder remains essentially constant in the event of a change in the image.

Printing machine with friction driven image cylinder

Correcting register faults in a multicolor printing machine having a number of items of equipment for the digital production of color separations, wherein correction values are determined and assigned to angular positions of at least one image cylinder and, as a result, taken into account for the control of the production of the color separations on the image cylinder. Correction values are to be made available for the correction of register faults, which, with a fine graduation, make it possible to assign them to angular positions of machine elements in a repeatable way. This is achieved by determining circularity errors of machine elements which have an influence on the register, assigned to their angular positions and, from these, the correction values for the control of the production of the color separations on the at least one image cylinder being determined.

Method and apparatus for correcting register faults in a printing machine

A method for sensing a register discrepancy (r) in a multi-color printed item, the position of at least one register mark ( &prime;) that is associated with one color being sensed with respect to the position of at least one register mark ( &prime;) that is associated with at least one further color, and any density register discrepancy (r) using a measurement window being ascertained from discrepancies in the actual relative position ( ) with respect to the reference relative position ( ). The invention, furthermore, concerns an apparatus, a register control system, and register marks ( &prime;).

Growing community of inventors

Rochester, NY, United States of America

Christopher B Liston