Eastman-kodak Company

Eastman Kokak Company

David A Niemeyer

Richard J Kapusniak

Charles Chester Anderson

Charles D DeBoer

David F Jennings

Lawrence Philip Pate

Colin Carl Campbell

Roger Stanley Kerr

Thomas P Szumla

Larry R Gartz

Gerald M Leszyk

Gerard J Brien

A method of laminating a pre-press proof () is disclosed comprising the steps of treating a sheet of plastic material () with a corona discharge. Laminating a pre-laminate sheet () comprising a first thermoplastic layer () and a first support layer () to the sheet of corona discharged treated plastic material (). Removing the first support layer () to form a pre-laminated receiver stock (). Creating an imaged receiver sheet () with a second support layer (). Laminating the imaged receiver sheet () to the pre-laminated receiver stock () thereby encapsulating the image. Removing the second support layer () thereby forming the pre-press proof ().

Method of preparing plastic materials to allow lamination of a pre-press color proof

An apparatus for offset lithographic printing including an offset lithographic printing press including a printing cylinder having a surface including a mixture of cationic colloidal silica, fumed alumina, and a polymeric amine; and an inkjet printhead disposed to print a digital image on the printing cylinder with an ink jet fluid including a pigment and a polymeric dispersing agent, which ink jet fluid dries to produce a surface active to oleophilic lithographic printing inks.

Digital offset lithographic printing

A method for preparing lithographic printing plates comprising coating a substrate with a mixture including colloidal silica, fumed alumina, polyethylenimine, a quaternary ammonium polymer and a hardener; utilizing an inkjet printer with pigmented inks to print a digital image on the coated substrate; and drying the image.

Inkjet lithographic printing plates

Laminating a pre-press proof ( ) onto a coated metal plate ( ), consisting of the steps of: laminating a pre-laminate sheet ( ) to a coated metal plate ( ). Removing the first support layer ( ) forming a pre-laminated receiver stock ( ). Creating an imaged receiver sheet ( ) laminating the imaged receiver sheet ( ) to the pre-laminated receiver stock ( ) thereby encapsulating the representative image ( ) and removing the second support layer ( ) forming a pre-press proof ( ) onto a coated metal plate ( ).

Method of preparing metal plates to allow lamination of a pre-press color proof

A process of forming a halftone color proof containing at least one dye transfer image and at least one pigment transfer image, comprising imagewise-exposing, for less than about 10,sec., by means of a laser having a power density of greater than 10,W/cm,, a dye-donor element comprising a support having thereon a dye layer comprising a dye dispersed in a polymeric binder, the dye layer having an infrared-absorbing material associated therewith, the laser exposure taking place through the side of the support of the dye-donor element which does not have the dye layer thereon, and transferring a portion of the dye in the dye layer to a receiving element having thereon an image-receiving layer; and imagewise-exposing, for less than about 10,sec., by means of the laser, an ablative or propulsive pigment-donor element comprising a support having thereon a transfer layer comprising a pigment dispersed in a binder, the transfer layer having an infrared-absorbing material associated therewith, the laser exposure taking place through the side of the support of the pigment-donor element which does not have the transfer layer thereon, and transferring a pigment image to the receiving element to obtain the halftone color proof.

Thermal color proofing process

A process of forming a color proof comprising imagewise-exposing, by means of a laser, a colorant-donor element comprising a support having thereon:

A prepress color proof can be prepared using suitable donor elements and an intermediate receiver element that has a roughened outer image receiving layer so that the color image is transferred with high image resolution. The intermediate receiver element can also have a cushioning layer beneath the outer image receiving layer that reduces the tendency for entrapped dirt particles to form minus density spot defects. In addition, a unique carrier plate can be used to carry the donor and intermediate receiver elements through laminating equipment. This carrier plate has a thermoplastic adhesive layer with sufficient tackiness to prevent irreversible dimensional change during lamination.

Method for preparing prepress color proof and intermediate receiver

An imaging element for use in an electron-beam-recording process is comprised of a film support having, in order, on one side thereof a conductive layer comprising vanadium pentoxide, an adhesion-promoting hydrophilic colloid layer and an imaging layer. The imaging layer is comprised of an electron-beam-sensitive silver halide emulsion and the vanadium pentoxide is present in the conductive layer in an amount sufficient to impart thereto a resistivity of less than 5.times.10.sup.8 .OMEGA./sq. The imaging element is free of objectionable visual density, UV density and mottle and can be manufactured without the need for organic solvents.

Electron beam recording film with low visual and ultraviolet density

An electron-beam-recording process comprises the steps of (1) providing an electron-beam-recording element, (2) introducing the element into a vacuum chamber, (3) imagewise exposing the element within the vacuum chamber to an electron beam and (4) processing the imagewise-exposed element to form a visible image. The electron-beam-recording element comprises a film support having, in order, on one side thereof a conductive layer comprising vanadium pentoxide, an adhesion-promoting hydrophilic colloid layer and an imaging layer. The imaging layer is comprised of an electron-beam-sensitive silver halide emulsion and the vanadium pentoxide is present in the conductive layer in an amount sufficient to impart thereto a resistivity of less than 5.times.10.sup.8 .OMEGA./sq.

Electron beam recording process utilizing an electron beam recording

An electroconductive imaging element, that is especially useful in a high speed laser printing process utilizing electrostatography, is comprised of an insulating support, an electrically-conductive layer overlying the support and a thermoplastic dielectric imaging layer overlying the electrically-conductive layer. The electrically-conductive layer, which is comprised of at least 3 milligrams per square meter of a colloidal gel of vanadium pentoxide dispersed in a polymeric binder combines a high degree of transparency with a high degree of electrical conductivity. The thermoplastic dielectric imaging layer has a thickness of at least 0.2 micrometers and a surface resistivity of at least 10.sup.13 ohms/square and is comprised of a thermoplastic polymer with a glass transition temperature of at least 20.degree. C.

Imaging element for use in electrostatography

A print-out layer is incorporated in a donor element that is useful in a dry color proofing process in which a colored image is transferred from the donor element to a receiver. To achieve full color reproduction, images are transferred in succession and in register, to the receiver from donor elements, respectively containing yellow, magenta, cyan and black colorants. A visible image is formed in the print-out layer as a result of imagewise exposure of the donor element to activating radiation and is utilized to facilitate visual registration in forming the multicolor image on the receiver.

Growing community of inventors

Rochester, NY, United States of America

David A Niemeyer