Jerry Lynn Stone

US Patent:

53522834, Oct 4, 1994

Filed:

Jul 19, 1993

Appl. No.:

8/093520

Inventors:

Bradley L. Beach - Lexington KY
Ashok V. Gangal - Lexington KY
James M. Mrvos - Lexington KY
Ann M. Piekunka - Lexington KY
Jerry F. Stone - Georgetown KY

Assignee:

Lexmark International, Inc. - Greenwich CT

International Classification:

C09D 1102

US Classification:

106 22H

Abstract:

Hydroxyethylated polyethyleneimine is added to jet ink having an anionic dye to prevent whisker forming overnight. To avoid excessive viscosity at start-up, the polyethyleneimine is low molecular weight or a low molecular weight hydroxyethylated amine is combined with high molecular weight polyethyleneimine.

US Patent:

39987850, Dec 21, 1976

Filed:

Jan 6, 1976

Appl. No.:

5/646791

Inventors:

Jerry F. Stone - Georgetown KY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

C08K 547
C08K 534
C08K 539

US Classification:

260 4575W

Abstract:

A printer, such as an ink jet printer, incorporates various hardware such as the ink supply tank, tubing, and ink drop gutter, as representative items, having components molded in the hardware which disinfect groups of micro-organisms which present problems, particularly in areas where ink has depleted. The techniques described lead to inactivation of vegetative bacteria and fungi and prevention of maturation of spores in those areas not in frequent control with the biocide component of the ink. Also mutant forms are prevented from developing in those areas where the biocide component concentration is below the effective lethal level.

US Patent:

52230287, Jun 29, 1993

Filed:

Aug 19, 1991

Appl. No.:

7/746545

Inventors:

Rodney O. Aulick - Lexington KY
Bradley L. Beach - Lexington KY
Terence E. Franey - Lexington KY
James M. Mrvos - Lexington KY
Ann M. Piekunka - Lexington KY
Jerry F. Stone - Georgetown KY

Assignee:

Lexmark International, Inc. - Greenwich CT

International Classification:

C09D 1102

US Classification:

106 22H

Abstract:

A waterfast ink having 3. 0% Food Black 2, 2. 5% highly hydroxyethylated polyethyleneimine, 10. 0% ammonium benzoate, and the balance water. The invention appears to function upon loss of water after printing by a polar neutralizing between the dye and the polyimine, which results in an affinity of the dye to paper. It is applicable to any dye having anionic solubilizing groups but not having quaternary ammonium and to any ammonium salt.