Stewart H Merrill

US Patent:

39389928, Feb 17, 1976

Filed:

Aug 19, 1974

Appl. No.:

5/498818

Inventors:

Thomas A. Jadwin - Rochester NY
Ravi Khanna - Rochester NY
Stewart H. Merrill - Rochester NY
Edmond S. Perry - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03G 900
G03G 500

US Classification:

96 1SD

Abstract:

The present invention relates to an electrographic developing composition containing finely divided carrier particles and finely divided toner particles having incorporated therein a fusible, crosslinked binder polymer. An improved electrographic developing process using such toner particles is also disclosed.

US Patent:

44966431, Jan 29, 1985

Filed:

Mar 23, 1984

Appl. No.:

6/592996

Inventors:

John C. Wilson - Rochester NY
Lawrence P. DeMejo - Pittsford NY
Thomas A. Jadwin - Rochester NY
Stewart H. Merrill - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03G 910

US Classification:

430110

Abstract:

A two-component, dry electrostatic developer composition containing toner particles and coated-carrier particles is disclosed. The toner contains a binder polymer and a phosphonium, arsonium or stibonium charge-control agent dispersed in the toner binder. The carrier is coated with a fluoropolymer. The resulting developer exhibits reduced toner throw-off and other disclosed advantages.

US Patent:

42529212, Feb 24, 1981

Filed:

Oct 3, 1979

Appl. No.:

6/081402

Inventors:

Stewart H. Merrill - Rochester NY
Susan E. Hartman - Rochester NY
John M. Noonan - Rochester NY
Mohammad A. Sandhu - Webster NY
Domenic Santilli - Webster NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

C08G 6376
C08F28300
C08F28302

US Classification:

525437

Abstract:

Polyesterionomers having the structure ##STR1## wherein G. sup. 1 represents a straight or branched chain alkylene having about 2 to 12 carbon atoms, or, substituted or unsubstituted cycloalkylene, cycloalkylenebis(oxyalkylene) or cycloalkylenedialkylene; G. sup. 2 represents, substituted and unsubstituted, arylene, cycloalkylene or a straight or branched chain oxygen free alkylene having about 2 to 12 carbon atoms; R and Ar, which are always different, represent 1,1,3-trimethyl-3-phenylindan-5, 4'-diyl, or an unsaturated, substituted or unsubstituted alicyclic group having 7-10 carbon atoms or a substituted or unsubstituted moiety selected from the group consisting of alkylene, cycloalkylene, sulfonyldiarylene, arylene, arylenevinylene, arylenealkylene, arylenebisvinylene or arylenebisalkylene; A represents a sulfoarylene, sulfoaryloxyarylene, sulfocycloalkylene, iminodisulfonylarylene, iminobis(sulfonylarylene), sulfoaryloxysulfonylarylene and sulfoaralkylarylene or the alkali metal or ammonium salt thereof; said G. sup. 1, G. sup. 2, R and Ar substituents are selected from the group consisting of alkyl, alkoxy, nitro, carboxyl, halo and cyano; w is about 50 to about 100, preferably, 65 to 100 mole percent of the total diol component; and of the total acid component; x is about 25 to about 95 mole percent; y is about 1 to about 74 mole percent; and z is about 4 to about 15 mole percent.

US Patent:

41705637, Oct 9, 1979

Filed:

Aug 12, 1977

Appl. No.:

5/824135

Inventors:

Stewart H. Merrill - Rochester NY
Domenic Santilli - Webster NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03G 912

US Classification:

252 621L

Abstract:

Liquid developers for electrography are provided containing soluble polymeric dispersing agents that comprise a phosphonate moiety. The phosphonate moiety comprises a phosphonic acid group, a half-ester of a phosphonic acid group, or a salt of either of these groups.

US Patent:

42027853, May 13, 1980

Filed:

May 15, 1978

Appl. No.:

5/906174

Inventors:

Stewart H. Merrill - Rochester NY
Susan E. Hartman - Rochester NY
John M. Noonan - Rochester NY
Mohammad A. Sandhu - Webster NY
Domenic Santilli - Webster NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03G 912

US Classification:

430106

Abstract:

Polyesterionomers useful as a binder in liquid electrophotographic developers having the structure are disclosed. ##STR1##.

US Patent:

41712757, Oct 16, 1979

Filed:

Aug 12, 1977

Appl. No.:

5/824131

Inventors:

Stewart H. Merrill - Rochester NY
Alec N. Mutz - Rochester NY
Frederick A. Stahly - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03G 912

US Classification:

252 621L

Abstract:

Liquid developers for electrography comprise an electrically insulating carrier liquid containing (1) an addition polymer comprising a polar moiety and at least one additional moiety having predetermined solubility characteristics with respect to the carrier liquid, (2) a polymer comprising a phosphonate moiety, and (3) a halogenated polymer.

US Patent:

42230861, Sep 16, 1980

Filed:

Apr 27, 1979

Appl. No.:

6/033600

Inventors:

Stewart H. Merrill - Rochester NY
Domenic Santilli - Webster NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03G 1310

US Classification:

430119

Abstract:

Liquid developers for electrography are provided containing soluble polymeric dispersing agents that comprise a phosphonate moiety. The phosphonate moiety comprises a phosphonic acid group, a half-ester of a phosphonic acid group, or a salt of either of these groups.

US Patent:

RE310727, Nov 2, 1982

Filed:

Jan 28, 1977

Appl. No.:

5/763962

Inventors:

Thomas A. Jadwin - Rochester NY
Ravi Khanna - Rochester NY
Stewart H. Merrill - Rochester NY
Edmond S. Perry - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03G 910
G03G 914

US Classification:

430 99

Abstract:

The present invention relates to an electrographic developing composition containing finely divided carrier particles and finely divided toner particles having incorporated therein a fusible, crosslinked binder polymer. An improved electrographic developing process using such toner particles is also disclosed.