Eastman-kodak Company

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Global Oled Technology LLC

Todd Russell Griffin

Ravi Sharma

Charles F Faisst

Allan Francis Sowinski

David Louis Jeanmaire

Robert Link

Douglas E Bugner

David John Nelson

Barbara Boland Lussier

David Daniel Putnam

Mark Edward Irving

Alexandra DiLauro Bermel

Joseph E Yokajty

James Lee Bello

Jinquan Xu

Brian L Lindstrom

Kim W Montz

Thomas W Palone

Michael Frank Baumer

James Alan Katerberg

Christopher Newell Delametter

Rajesh Vinodrai Mehta

Qing Yang

John Charles Brazas, Jr

Zhanjun Gao

Robert J Simon

Thomas Walter Steiner

John R Debesis

Randolph Brost

Randy Lee Fagerquist

Chang-Fang Hsu

Bradley A Phillips

Michael S Hanchak

Edwin A Mycek

Larry L Lapa

Milton S Sales

Simon C Haseler

Gyanendra P Sasmal

Robert J Green, Jr

Ronald J Hill

Randolph Carl Brost

John Charles Brazas

Robert James Simon

Joseph Edward Yokajty

Bradley Allen Phillips

An ink set has two or more aqueous pigment-based inks, each of which has 75-95 weight %, a) one or more pigment colorants, and b) one or more water-miscible humectants that are present in a total amount of at least 1 weight % and up to and including 20 weight %, and consist essentially of compounds, each of which has a carbon atom to oxygen atom ratio of at least 1.0:1.0 and only two hydroxy groups. The weight % amounts of water and the b) water-miscible humectants are based on the total weight of each aqueous pigment-based ink. The aqueous pigment-based inks in the ink set can be used individual or in combination to provide monochrome or polychrome inkjet-printed images on various ink-receptive media and using various inkjet printing equipment and methods.

Ink set for inkjet printing

A flexible inkjet-printed article is prepared by: A') providing an ink receptive medium having a substrate and an aqueous-based ink-receptive layer. This layer has: (a) a water-soluble salt of a multivalent metal cation; (b) one or both of a polyvinyl alcohol and a polyvinyl amine (or a copolymer derived from a vinyl alcohol and a vinyl amine) at 0.5-30 weight %; and optionally, (c) a crosslinking agent and (d) silica particles. At least one aqueous pigment-based ink is deposited directly on the aqueous-based ink-receptive layer, each having: a) an anionically-stabilized pigment colorant; and b) a water-miscible humectant at 1-20 weight %, each having a carbon to oxygen atom ratio of &#x2265;1.0:1.0 and only two hydroxy groups. After drying, a functional layer with adhesive composition is formed on the inkjet-printed image and a flexible material is laminated to the functional layer, to form a flexible inkjet printed article.

Method of preparing laminated article

Inkjet printing is carried out to provide monochrome or polychrome inkjet-printed images. An ink-receptive medium is provided with a substrate with an aqueous-based ink-receptive layer disposed thereon. The aqueous-based ink-receptive layer has: (a) one or more water-soluble salts of a multivalent metal cation in an amount of 0.6-49 weight %; (b) one or both of a polyvinyl alcohol and a polyvinyl amine (or a copolymer of a vinyl alcohol and vinyl amine) in a total amount of 0.5-30 weight %; and optionally, (c) a crosslinking agent and (d) silica particles. One or more aqueous pigment-based inks are inkjet printed onto this aqueous-based ink-receptive layer, each ink comprising: a) one or more anionically-stabilized pigment colorants; b) one or more water-miscible humectants that are present in a total amount of 1-20 weight % and each having a carbon atom to oxygen atom ratio of at least 1.0:1.0 and only two hydroxy groups.

Method for inkjet printing

An inkjet-printed article has an ink receptive medium with a substrate and an aqueous-based ink-receptive layer disposed thereon. The aqueous-based ink-receptive layer includes: (a) a water-soluble salt of a multivalent metal cation at 0.6-49 weight %; (b) one or both of a polyvinyl alcohol and a polyvinyl amine (or a copolymer derived from a vinyl alcohol and a vinyl amine) at 0.5-30 weight %; and optionally, (c) a crosslinking agent or (d) silica particles. The article also has an inkjet-printed image disposed on the aqueous-based ink-receptive layer, provided from one or more aqueous pigment-based inks, each of which has a) an anionically-stabilized pigment colorant; b) one or more water-miscible humectants at a total amount of 1-20 weight %, each of which has a carbon atom to oxygen atom ratio of at least 1.0:1.0 and only two hydroxy groups.

Article prepared by inkjet printing

A flexible inkjet printed article includes an ink receptive medium comprising a substrate and an aqueous-based ink-receptive layer. The aqueous-based ink-receptive layer has: (a) a water-soluble salt of a multivalent metal cation; (b) one or more of a polyvinyl alcohol and a polyvinyl amine (or a copolymer derived from a vinyl alcohol and a vinyl amine) at 0.5-30 weight %; and optionally, (c) a crosslinking agent or (d) silica particles. An inkjet-printed image is disposed on the ink-receptive layer, provided from one or more aqueous pigment-based inks, each having: a) one or more anionically-stabilized pigment colorants; b) one or more water-miscible humectants at 1-20 weight %, each of which has a carbon atom to oxygen atom ratio of at least 1.0:1.0 and only two hydroxy groups. A functional layer comprising an adhesive composition disposed on the inkjet-printed image; and a flexible polymeric film or paper adhered to the functional layer.

Laminated article

A printhead includes a nozzle plate including a plurality of nozzles and a manifold body bonded to the nozzle plate. The manifold body includes a liquid channel in fluid communication with the plurality of nozzles. A cavity that dampens pressure modulation in liquid channel of the manifold body is located between the nozzle plate and the manifold body. The cavity is fluidically common to the plurality of nozzles.

Printhead with print artifact supressing cavity

A method of printing an image with a continuous inkjet printer system employing a jetting module including a nozzle in fluid communication with a liquid ink source and a catcher including a liquid drop contact face; wherein the liquid ink is an aqueous inkjet black ink comprising a black colorant and at least one surfactant selected to provide a 10-ms dynamic surface tension of less than 54 mN/m. Full color images may be printed by further employing at least second, third and fourth jetting modules and yellow, magenta and cyan inks each also comprising a surfactant selected to provide a 10-ms dynamic surface tension of less than 54 mN/m for each ink. The ink compositions provide for fluid properties on the drop catcher face that minimize printing defects that can occur during drop deflection during the printing of high dynamic range images at high speed.

Continuous inkjet printing method

A method of printing an image with a continuous inkjet printer system employing bimodal drop size generation with pigmented inkjet ink compositions comprising a polymer additive, wherein the liquid ink is an aqueous inkjet ink comprises dispersed pigment colorant particles having a mean particle size of less than 150 nanometers and at least about 0.1 wt % of polymer additive distinct from any polymer dispersant used to disperse the pigment particles, and recirculating liquid ink supplied to the nozzle if the printer system from a liquid ink source is in-line filtered with a filter selected to be effective at retaining particles having particle sizes equal to and greater than 0.6 micrometers from the liquid ink and to pass the dispersed pigment particles. The invention enables high quality drop control in a continuous inkjet printing system.

A method for providing drop placement adjustment of drops deposited on a print media by a printhead in a continuous inkjet printer, the method comprising the steps of providing the printhead with a drop generator having at least one nozzle; moving the printhead relative to the print media; causing the printhead to form drops from the at least one nozzle with a drop formation period being the time between consecutive drop formations; wherein a portion of the formed drops are allowed to strike pixel locations on the print media for forming print drops, while other drops are directed toward a catcher and do not strike the print media for forming catch drops; creating a series of the print drops to print on a series of consecutive pixel locations; and adjusting a velocity of a portion of the formed print drops relative to a velocity of other print drops to adjust the placement of the print drop within the pixel locations.

Drop placement method for continuous printers

A method for operating a jetting module includes applying to a drop forming mechanism a sequence of drop formation waveforms in which a small-drop waveform applied after another identical small-drop waveform causes a small drop of volume Vs to be formed; applying a large-drop waveform after another identical large-drop waveform causes a large drop of volume Vto be formed, and applying a large-drop waveform adjacent to a small-drop waveform can be done in a way that produces a large drop having a volume V, where Vis different than Vand a small drop of volume V, where Vis different than Vs.

Method of adjusting drop volume

An aqueous inkjet ink set for use in continuous inkjet printing comprising at least one cyan ink, at least one yellow ink, at least one magenta ink, and at least one black ink, wherein each ink of the ink set comprises dispersed pigment particles and at least one surfactant selected to provide a 10-ms dynamic surface tension of less than 54 mN/m for each ink. The invention relates to continuous ink jet printing of aqueous pigmented ink compositions recycled from main ink supply reservoirs, employing a printer with drop ejectors and a drop deflector and non-printing drop catchers capable of returning unprinted ink to the fluid delivery systems following the capture of non-printing drops. The pigmented ink jet ink compositions provide for particularly suitable fluid properties on the drop catcher face that minimize printing defects that can occur during drop deflection during the printing of high dynamic range images at high speed.

Ink set for continuous inkjet printing

A printhead includes a drop generator configured to selectively form a large volume drop and a small volume drop from liquid emitted through a nozzle associated with the drop generator, the large volume drop and the small volume drop traveling along an initial drop trajectory, and a gas flow deflection system including a gas flow that interacts with the large volume drop and the small volume drop in a drop deflection zone such that at least the small volume drop is deflected from the initial drop trajectory, the gas flow being provided by a gas flow source connected in fluid communication with a gas flow duct, the gas flow deflection system including a gas flow pressure oscillation dampening structure located between the gas flow source and the drop deflection zone.

Printhead having improved gas flow deflection system

An aqueous inkjet black ink composition for use in continuous ink jet printing is provided comprising black pigment particles dispersed with a polymeric dispersant or self dispersing pigment particles without the need for a dispersant; and at least one surfactant, wherein the at least one surfactant is selected to provide the ink composition with a 10-dynamic surface tension of less than 54 mN/m. The invention relates to continuous ink jet printing of an aqueous pigmented ink composition recycled from a main ink supply reservoir, employing a printer with a drop ejector and a drop deflector and a non-printing drop catcher capable of returning unprinted ink to the fluid delivery system following the capture of non-printing drops. The pigmented ink jet ink compositions provide for particularly suitable fluid properties on the drop catcher face that minimize printing defects that can occur during drop deflection during the printing of high dynamic range images at high speed.

Ink composition for continuous inkjet printing

A method of aligning an OLED substrate with a shadow mask includes forming a shadow mask with at least three spaced alignment openings, providing a precision alignment element into each of the alignment openings, and positioning the OLED substrate so that the edges of the OLED substrate engage the precision alignment elements and thereby align the shadow mask with the OLED substrate.

Aligning OLED substrates to a shadow mask

The method includes forming first size drops by applying drop forming pulses during a unit time period &#x3c4;; forming second size drops by applying drop forming pulses during a second size drop time period, &#x3c4;m, which is a multiple, m, of the unit time period; forming the corresponding plurality of drop forming energy pulse sequences so as to form non-print drops and print drops; delaying the timing of the drop forming energy pulses sent to the transducers of the second group relative to the drop forming energy pulses sent to the transducers of the first group by a delay time &#x3c4;, characterized by &#x3c4;being equal to d*&#x3c4;where d is 1&#xbd; to 9&#xbd;, when printing at a first speed and &#x3c4;approximately equal to f*&#x3c4;times where f is 1&#xbd; to 9&#xbd;, f is greater than d when printing at a speed slower than the first speed.

Phase shifts for printing at two speeds

Growing community of inventors

Webster, NY, United States of America

Todd Russell Griffin