Wayne Lee Cook

US Patent:

6432192, Aug 13, 2002

Filed:

Feb 23, 2000

Appl. No.:

09/510777

Inventors:

Wayne L. Cook - Chelsea MI
Douglas P. Gebler - Elizabethtown KY
Norman E. Pratt - Northville MI

Assignee:

Flint Ink Corporation - Ann Arbor MI

International Classification:

C09B 6754

US Classification:

106496, 106 316, 106471, 106494, 106498

Abstract:

A pigment is synthesized in an aqueous medium and the pigment dispersion is purified by ultrafiltration or microfiltration. In particular, an aqueous pigment dispersion having a very small average particle size and a narrow particle size distribution may be prepared by the steps of (a) synthesizing a pigment in an aqueous medium and (b) removing an impurity such as a dissolved synthesis by-product or unreacted starting material through cross flow filtration using a membrane having an average pore diameter of from about 3 nanometers to about 3000 nanometers to produce a purified aqueous pigment dispersion.

US Patent:

8173215, May 8, 2012

Filed:

May 29, 2009

Appl. No.:

12/474730

Inventors:

Allan F. Sowinski - Rochester NY, US
Wayne L. Cook - Xenia OH, US
Joel D. Coomer - Springboro OH, US
James D. McCann - Waynesvile OH, US
Mihaela L. Madaras - Webster NY, US
Hwei-Ling Yau - Rochester NY, US

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B05D 1/26

US Classification:

427256

Abstract:

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 fluid delivery system capable of measuring the ink electrical resistivity, and providing needed quantities of either vehicle replenisher fluid or fresh ink to maintain the desired recycled ink concentration. The electrical resistivity of the pigmented ink can be modified advantageously for stable ink recycling by the addition of the organic amine salt of an acid, and the pH stability of the ink can be simultaneously improved by the additional inclusion of the neutral form of the organic amine in similar molar proportions to the amine salt. The pigmented ink jet ink compositions provide for particularly stable and invariant fluid properties during periods of extended printer operation and ink recirculation.

US Patent:

8398191, Mar 19, 2013

Filed:

Nov 24, 2009

Appl. No.:

12/624444

Inventors:

Wayne L. Cook - Xenia OH, US
Barbara B. Lussier - Rochester NY, US
Alexandra D. Bermel - Pittsford NY, US

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41J 2/195
B41J 2/17

US Classification:

347 7, 347 95

Abstract:

A continuous ink jet printer aqueous ink composition including pigment particles dispersed with a dispersant or self dispersing pigment particles without the need for a dispersant, and a polymer additive distinct from any dispersant used to disperse the pigment particles, wherein the polymer additive comprises a styrene-acrylic copolymer that does not substantially displace any dispersant used to disperse the pigment, present in an amount effective to stabilize the ink composition against shear induced agglomeration caused by pumping the ink composition through a continuous ink jet printing fluid system. A method of continuous ink jet printing includes A) providing a main fluid supply of a continuous inkjet printer with an aqueous ink composition of the invention; B) pumping the ink composition from the main fluid supply to a print head and ejecting a continuous stream of the ink composition from the print head which continuous stream is broken into spaced droplets; and C) in response to electrical signals received from a control mechanism, controlling the spaced droplets to select between printing droplets for marking a substrate and nonprinting droplets that are collected and returned to the main fluid supply.

US Patent:

20110123714, May 26, 2011

Filed:

Nov 24, 2009

Appl. No.:

12/624439

Inventors:

Hwei-Ling Yau - Rochester NY, US
Wayne L. Cook - Xenia OH, US
Barbara B. Lussier - Rochester NY, US
Simon C. Haseler - Rochester NY, US
Alexandra D. Bermel - Pittsford NY, US

International Classification:

B05D 5/00
C09D 11/10

US Classification:

427256, 523436

Abstract:

A continuous ink jet printer aqueous ink composition including pigment particles dispersed with a dispersant or self dispersing pigment particles without the need for a dispersant, and a polymer additive distinct from any dispersant used to disperse the pigment particles, wherein the polymer additive comprises a water soluble block copolymer having one or more poly(ethylene oxide) block segments wherein the polymer additive is present in an amount effective to stabilize the ink composition against shear induced agglomeration caused by pumping the ink composition through a continuous ink jet printing fluid system. A method of continuous ink jet printing includes A) providing a main fluid supply of a continuous inkjet printer with an aqueous ink composition of the invention; B) pumping the ink composition from the main fluid supply to a print head and ejecting a continuous stream of the ink composition from the print head which continuous stream is broken into spaced droplets; and C) in response to electrical signals received from a control mechanism, controlling the spaced droplets to select between printing droplets for marking a substrate and nonprinting droplets that are collected and returned to the main fluid supply.

US Patent:

20130050323, Feb 28, 2013

Filed:

Aug 31, 2011

Appl. No.:

13/222679

Inventors:

Wayne Lee Cook - Xenia OH, US
Jeremiah D. Allen - Fairborn OH, US

International Classification:

B41J 29/38
B41J 2/17

US Classification:

347 14, 347 95

Abstract:

A method of continuous inkjet printing comprising: A) providing a main fluid supply of a continuous inkjet printer with a printing fluid comprising water, a soluble or dispersed polymeric component, and less than a total of 10 wt % of low-volatile water soluble humectant having a boiling point of greater than 170 C; B) delivering the printing fluid from the main fluid supply to a printhead and ejecting a continuous stream of the printing fluid from the printhead which continuous stream is broken into spaced droplets; C) in response to electrical signals received from a control mechanism, controlling the spaced droplets to select between printing droplets for marking a substrate and nonprinting droplets that are collected and returned to the main fluid supply; D) stopping delivery of the printing fluid to the printhead upon completion of a printing procedure; E) providing a maintenance fluid supply with a maintenance fluid comprising water and at least 5 wt % low-volatile water soluble humectant having a boiling point of greater than 170 C, wherein the concentration of low-volatile water soluble humectant in the maintenance fluid is greater than that in the printing fluid; and F) delivering the maintenance fluid from the maintenance fluid supply to the printhead after use of the printing fluid in the printhead and ejecting the maintenance fluid from the printhead to purge the printing fluid from the printhead. The invention further provides a fluid set for a continuous inkjet printer.

US Patent:

20170283635, Oct 5, 2017

Filed:

Mar 6, 2017

Appl. No.:

15/450394

Inventors:

- Rochester NY, US
Wayne Lee Cook - Xenia OH, US

International Classification:

C09D 11/107
C09D 11/328

Abstract:

An aqueous particle-free inkjet ink composition has a pH of 7 to 9, and consists essentially of: (A) one or more water-soluble dye colorants present in a total amount of 2-10 weight %, (B) a water-soluble polymer present in an amount of 1-4 weight %, and an aqueous medium consisting essentially of water. The water-soluble polymer has an acid number or at least 130 and a molecular weight of 5,000 to 20,000. It comprises: (a) 55-80 mol % of recurring units derived from one or more ethylenically unsaturated polymerizable monomers selected from the group consisting of substituted or unsubstituted styrenes, (meth)acrylates, and combinations thereof, each (meth)acrylate comprising either a pendant phenyl group or an alkyl ester group having 12 to 20 carbon atoms; and (b) 20-35 mol % of recurring units comprising (meth)acrylic acid, all based on total water-soluble polymer recurring units. The one or more water-soluble dye colorants are chosen singly or collectively to provide a hue other than black.

US Patent:

20140231674, Aug 21, 2014

Filed:

Feb 18, 2013

Appl. No.:

13/769504

Inventors:

Wayne Lee Cook - Xenia OH, US

International Classification:

C09D 11/00
G01N 21/64
B42D 15/00
B41J 2/02

US Classification:

2504591, 25230116, 25230135, 347 9, 428207

Abstract:

An aqueous ink jet printer ink composition is designed for ink jet printing of fluorescent images. This composition contains fluorescent pigment particles that have (1) an excitation peak wavelength of at least 300 nm and less than 400 nm, and (2) an emission peak that is greater than 400 nm and up to and including 700 nm when exposed to fluorescent-exciting radiation. The non-polymeric fluorescent pigment particles have a median particle size that is greater than 10 nm and up to and including 500 nm, and the 95percentile fluorescent pigment particle size is less than 150 nm. The composition can be continuously printed on various pretreated or untreated receiver elements or articles to provide a fluorescent image that can be detected when excited at the appropriate wavelength. The fluorescent image can thus be used as a security or identification mark for various purposes.