Richard N Vanhanehem

US Patent:

6631983, Oct 14, 2003

Filed:

Dec 28, 2000

Appl. No.:

09/751229

Inventors:

David P. Trauernicht - Rochester NY
Richard C. VanHanehem - Hamlin NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41J 218

US Classification:

347 89

Abstract:

An improved continuous ink jet printing system which continually recirculates its ink through an ion-exchange treatment is disclosed. The system includes collecting guttered ink for reconstitution and recirculation and propelling said collected and recircultating ink through an ion-exchange column and then to an ink supply reservoir and on through the nozzle bores of continuous ink jet print heads.

US Patent:

59289902, Jul 27, 1999

Filed:

Dec 22, 1997

Appl. No.:

8/995825

Inventors:

Robert A. Guistina - Rochester NY
Elizabeth G. Burns - Rochester NY
Teh-Ming Kung - Rochester NY
Kristine B. Lawrence - Rochester NY
Richard C. VanHanehem - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41M 5035
B41M 538

US Classification:

503227

Abstract:

A thermal dye transfer assemblage comprising: (I) a dye-donor element comprising a support having thereon sequentially repeating dye layer patches of a dye dispersed in a polymeric binder, at least one of the dye patches containing a deprotonated cationic dye which is capable of being reprotonated to a cationic dye having a N-H group which is part of a conjugated system; and (II) a dye-receiving element comprising a support having thereon a polymeric dye image-receiving layer comprising a polyester polymer which itself does not significantly reprotonate deprotonated cationic dyes which may be transferred from the dye-donor element, to which has been added a hydrated transition metal or metalloid salt of a strong acid; the dye-receiving element being in a superposed relationship with the dye-donor element so that the dye layer is in contact with the polymeric dye image-receiving layer.

US Patent:

61325015, Oct 17, 2000

Filed:

Aug 10, 1999

Appl. No.:

9/371657

Inventors:

Raymond P. Scaringe - Rochester NY
Steven Evans - Rochester NY
Richard C. VanHanehem - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

C09D 1102

US Classification:

106 3175

Abstract:

An aqueous ink jet ink composition comprising a humectant in an amount of up to about 70% by weight of the composition, and from about 0. 5% to about 30% by weight of a co-milled mixture of Pigment Yellow 74 and a pigment having the following structure: ##STR1##.

US Patent:

59453745, Aug 31, 1999

Filed:

Dec 22, 1997

Appl. No.:

8/995689

Inventors:

Elizabeth G. Burns - Rochester NY
Steven Evans - Rochester NY
Kristine B. Lawrence - Rochester NY
Richard C. VanHanehem - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41M 5035
B41M 538

US Classification:

503227

Abstract:

A thermal dye transfer assemblage comprising: (a) a dye-donor element comprising a support having thereon a dye layer comprising a dye dispersed in a polymeric binder, the dye being: I) an electrically neutral, deprotonated, delocalized cationic dye precursor; II) a pendant basic dye of the formula D-(L-E). sub. m wherein D represents the residue of a dye, L represents a covalent linking group, E represents a moiety with basic properties and m is an integer of 1-3; or III) a cationic dye precursor having the following structure: ##STR1## (b) a dye-receiving element comprising a support having thereon a polymeric dye image-receiving layer, the dye-receiving element being in a superposed relationship with the dye-donor element so that the dye layer is in contact with the polymeric dye image-receiving layer, the polymeric dye image-receiving layer comprising an acidic salt formed from the reaction of a weak, nitrogen-containing base with a strong protic acid dissolved or dispersed in a polymeric binder.

US Patent:

61805610, Jan 30, 2001

Filed:

Jun 9, 1999

Appl. No.:

9/328720

Inventors:

Derek D. Chapman - Rochester NY
Richard C. Vanhanehem - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41M 5035
B41M 538

US Classification:

503227

Abstract:

A magenta dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of magenta dyes and a yellow dye dispersed in a polymeric binder, at least one of the magenta dyes having the formula: ##STR1## at least another of the magenta dyes having the formula: ##STR2## said yellow dye having the formula: ##STR3## and said element contains a complexing agent having the formula: ##STR4##.

US Patent:

61943495, Feb 27, 2001

Filed:

Jun 8, 1999

Appl. No.:

9/327845

Inventors:

Derek D. Chapman - Rochester NY
Richard C. Vanhanehem - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41M 5035
B41M 538

US Classification:

503227

Abstract:

A magenta dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of magenta dyes and a yellow dye dispersed in a polymeric binder, at least one of the magenta dyes having the formula: ##STR1## at least another of the magenta dyes having the formula: ##STR2## said yellow dye having the formula: ##STR3## and said element contains a complexing agent having the formula: ##STR4##.

US Patent:

6187714, Feb 13, 2001

Filed:

Jun 9, 1999

Appl. No.:

9/329161

Inventors:

Derek D. Chapman - Rochester NY
Richard C. Vanhanehem - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41M 5035
B41M 538

US Classification:

503227

Abstract:

A magenta dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of magenta dyes and a yellow dye dispersed in a polymeric binder, at least one of the magenta dyes having the formula: ##STR1## at least another of the magenta dyes having the formula: ##STR2## said yellow dye having the formula: ##STR3## and said element contains a complexing agent having the formula: ##STR4##.

US Patent:

57535906, May 19, 1998

Filed:

Jun 19, 1997

Appl. No.:

8/878717

Inventors:

Daniel J. Harrison - Pittsford NY
Kristine B. Lawrence - Rochester NY
Richard C. VanHanehem - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B41M 5035
B41M 538

US Classification:

503227

Abstract:

A thermal dye transfer assemblage comprising: (I) a dye-donor element comprising a support having thereon a dye layer comprising a dye dispersed in a polymeric binder, the dye being a deprotonated cationic dye which is capable of being reprotonated to a cationic dye having a N--H group which is part of a conjugated system, and (II) a dye-receiving element comprising a support having thereon a polymeric dye image-receiving layer, the dye-receiving element being in a superposed relationship with the dye-donor element so that the dye layer is in contact with the polymeric dye image-receiving layer, the polymeric dye image-receiving layer comprising a mixture of a) a polymer having a Tg of less than about 19. degree. C. and having no or only slight acidity; and b) an acidic clay capable of reprotonating the deprotonated cationic dye.