Mary K Sullivan

US Patent:

48962503, Jan 23, 1990

Filed:

Feb 12, 1988

Appl. No.:

7/155188

Inventors:

Mary Sullivan - Marlboro MA

Assignee:

Emerson & Cuming, Inc. - Lexington MA

International Classification:

H01G 900
H01B 102

US Classification:

361523

Abstract:

Novel solvent processible electrically conductive coatings of conductive particle (e. g. silver) filled polysulfones. The coating compositions are useful in a variety of environments, especially in the manufacture of tantalum capacitors. The coatings advantageously are extremely heat stable to withstand high temperature soldering and attach to solder without thermal decomposition.

US Patent:

49581732, Sep 18, 1990

Filed:

Nov 30, 1989

Appl. No.:

7/444119

Inventors:

John J. Fitch - Natick MA
Tim Parker - Shrewsbury MA
Alfred T. Bouchard - Blackstone MA
Mary Sullivan - Marlborough MA

Assignee:

Dennison Manufacturing Company - Framingham MA

International Classification:

G01D 1506
G03G 1320
G03G 1900

US Classification:

3461601

Abstract:

The invention comprises a toner receptive coating for substrates, typically paper, label or tag stock, for use in conventional printers such as ion deposition printers and photostatic copiers. The coating on paper or polymeric film improves the print density and durability of text or images transferred thereto from printers or copiers, particularly those which employ dry magnetic toner. The coating eliminates the need to use heat fusing to fix the transferred toned image to the substrate. The coating is composed of pressure sensitive polymeric binder material and particulate fillers. The polymeric binder has a glass transition temperature less than 20. degree. C. preferably a glass transition temperature between -10. degree. C. and +10. degree. C. The fillers include a polymeric filler, typically a polyethylene wax or a polyethylene/polytetrafluoroethylene wax mixture and a mineral filler, typically particulate silicon dioxide. The receptive coating also improves the smudge resistance of transferred toned images, particularly when employing dry magnetic toner.