Eastman-kodak Company

Kodak Polychrome Graphics, Gmbh

Kevin W Williams

Shiying Zheng

Ruizheng Wang

Huijuan D Chen

David A Stegman

Jeffrey W Leon

Thap DoMinh

James C Fleming

David Howard Levy

Mark Edward Irving

Margaret Jones Helber

Gustavo R Paz-Pujalt

David John Nelson

William J Harrison

Charles H Weidner

Ann L Carroll-Lee

Timothy W Stoebe

Steven Wade Kortum

David Lynn Patton

Robert E Dickerson

Derek D Chapman

Robert James Perry

Kevin Barry Ray

Thomas M Stephany

Richard L Parton

Ramanuj Goswami

Paul R West

Robert C Bryant

Richard N Blazey

Linda A Kaszczuk

Samir Y Farid

Jayanti Patel

Ian R Gould

Paul A Zielinski

John D Mee

Colin J Gray

Tien-Teh Chen

Jose A Rosario

Vishwakarma L Chand

W S Gaugh

A medium for displaying information thereon, the medium includes a substrate; and visible information formed from a plurality of colors displayed on the substrate; wherein at least one of the colors includes at least one visible colorant and at least one invisible colorant which invisible colorant is imperceptible to the human eye and which is not present in a reproduction therefrom for detecting counterfeiting or forgery.

Steganographically encoded media object having an invisible colorant

Disclosed is a molecule containing a first chromophore that exhibits a first absorption maximum above 700 nm and a second chromophore that exhibits a second absorption maximum different from the first absorption maximum, wherein the absorption of the first and second chromophores are substantially independent of each other. The molecule exhibits improved stability.

Bichromophoric molecules

A method of forming authenticated secure images on image areas on labels including the steps of storing in memory a number of different selectable label size and shapes; selecting an appropriate label size and shape from the memory for a particular image; moving a colorant donor element having a plurality of transferable colorants into transferable relationship with a receiver, the colorant donor element includes a representation of the particular image and marks which authenticate the particular image having colorant over such representation and marks; transferring colorants onto the receiver in accordance with the representation of the particular image and marks in the colorant donor element and the size of the selected label to form authenticated images in the receiver; and cutting the images on the receiver into the selected shape to form a plurality of labels each having an authenticated image.

Authenticated images on labels

A print media has a visible image and a plurality of invisible encodements comprising data printed over it in a hierarchy order, wherein the encodement of the highest order represents a replacement or edited version of the data of lower order encodements. Apparatus and methods provide effectively editing of an existing invisible encodement printed on media with a material sensitive to a first light wavelength by printing an edited or replacement encodement over it with a material sensitive to a second light wavelength of higher order in the hierarchy. Apparatus and methods also provide for selectively reading the highest order encodement, all of the encodements or selected ones of the encodements.

Method and apparatus for editing and reading edited invisible encodements on media

Display element with a backprint comprising a squarine dye

The present invention relates to a thermal developing photographic element comprising a radiant energy absorbing material incorporated into said photothermal film.

Apparatus and method for radiant thermal film development

Positive-working thermally imageable elements, useful as printing plate precursors and having reduced ablation when thermally imaged, and methods for their preparation are disclosed. In one aspect, the elements contain a hydrophilic substrate, an underlayer, a barrier layer, and a top layer. The underlayer comprises a photothermal conversion material.

Minimization of ablation in thermally imageable elements

Stable IR dye composition for invisible marking

A laser-induced thermal recording element comprising a support having thereon a colorant layer comprising a colorant dispersed in a polymeric binder, said colorant layer having associated therewith a laser light-absorbing dye absorbing at the wavelength of a laser used to expose said element, said laser light-absorbing dye comprising a polymethine (cyanine) dye having covalently bonded thereto a phenylenediamine moiety. The element exhibits improved dye stability.

Laser thermal imaging process, dye, and element

This invention relates to a photographic display element comprising a support, a front side which has at least one photographic imaging layer, and a back side, said front and back sides being on opposite sides of the support, wherein said photographic element further comprises applied on the front or back side a composition comprising coalesced hydrophobic polymer particles having associated therewith an infrared absorbing polymethine dye having covalently bonded thereto a phenylenediamine moiety.

Photographic display elements comprising stable IR dye compositions for invisible marking

An imaging member, such as a negative-working printing plate or on-press cylinder, has an imaging layer comprised of a thermally sensitive ionomer (charged polymer) and a photothermal conversion material that is a bis(aminoaryl)polymethine dye that is soluble in water or a water-miscible organic solvent, and that has a &lgr; greater than 700 nm as measured in water or the water-miscible organic solvent.

Thermal imaging composition and imaging member containing polymethine IR dye and methods of imaging and printing

This invention comprises a transferable support comprising a substantially flat sheet having on a surface thereof encoded data in the form of dot code or two-dimensional bar code wherein the data is capable of being read by a sensor. The invention also comprises object having affixed to a surface thereof a support comprising a substantially flat sheet having on a surface thereof encoded data in the form of dot code or two-dimensional bar code wherein the data is capable of being read by an sensor.

Transferable support for applying data to an object

An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared with a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic charged polymer (ionomer) and an infrared radiation sensitive negatively-charged oxonol dye that has a &lgr; of greater than 700 nm. The heat-sensitive polymer and IR dye can be formulated in water or water-miscible solvents to provide highly thermal sensitive imaging compositions. In the imaging member, the polymer reacts to provide increased hydrophobicity in areas exposed to energy that provides or generates heat. For example, heat can be supplied by laser irradiation in the IR region of the electromagnetic spectrum. The heat-sensitive polymer is considered &ldquo;switchable&rdquo; in response to heat, and provides a lithographic image without conventional alkaline processing.

Thermal switchable composition and imaging member containing complex oxonol IR dye and methods of imaging and printing

Imaged medium comprising sensor-readable indicia

A test target having N invisible test data encodements ( ) each comprising test data printed over the surface of test print media media in a defined spatial order printed in invisible ink by a printer under test. The invisible ink print quality of the printer is determined by the ability of an invisible encodement reader to decode certain of the N invisible encodements ( ). In a first preferred embodiment, a test print media is prepared by pre-printing or coating a media surface with an invisible ink that is sensitive to the same wavelength of light as the printer ink in a plurality N of areas on the media surface providing step background densities ( ) ranging from no applied ink to maximum printer ink density in a test tablet manner In the test mode, N test data files are printed as N invisible encodements ( ) in the corresponding N areas ( ) thereby creating a test target that is to be read by the reader. It is presumed that the print quality that the printer is capable of achieving is degraded if fewer than a predetermined number of encodements ( ) are readable, and the invisible ink is replaced or replenished. In a second preferred embodiment, the test target comprises N invisible encodements ( ) differing from one another in a step tablet manner printed by the printer ( ) under test. The encodements ( ) are read and decoded to the extent possible using the reader. The particular ones of the encodements ( ) that can be accurately decoded provide a measure of the print quality that the printer is capable of achieving.

Methods and articles for determining invisible ink print quality

Growing community of inventors

Rochester, NY, United States of America

Kevin W Williams