Wayne T Cook

Address:

139 Coldwater Crk Ln, Weatherford, TX 76088

Phone:

8175990026

VIN:

1G1YY26U675103186

Make:

CHEVROLET

Model:

CORVETTE

Year:

2007

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:

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.