John Paul Coburn

US Patent:

60602031, May 9, 2000

Filed:

Aug 27, 1996

Appl. No.:

8/703536

Inventors:

John F. Coburn - Malden MA
George Goedecke - Manchester NH
Pat Y. Wang - Londonderry NH

Assignee:

Nashua Corporation - Nashua NH

International Classification:

G03G 1320

US Classification:

430124

Abstract:

A system and method for producing photographic-like output. In the method, an image is formed from image forming agent(s) on a specially coated substrate, after which the combination is fused to preferably form a uniform glossy finish on the substrate. A preferred application is in an electrostatographic process, comprising a system comprising (a) toner comprising a resin component having a glass transition temperature T. sub. gT ; and (b) a coated substrate comprising a coating having a glass transition temperature T. sub. gC, where the resin component has a characteristic chemical compatibility with the coating.

US Patent:

59323426, Aug 3, 1999

Filed:

Nov 3, 1997

Appl. No.:

8/963654

Inventors:

Eitan Zeira - Nashua NH
John F. Coburn - Malden MA

Assignee:

Nashua Corporation - Nashua NH

International Classification:

B29D 1100
G02B 502

US Classification:

428327

Abstract:

A process for producing a light diffusing sheet material, and materials made therefrom. A dispersion of light scattering optically clear particles in an optically clear matrix during mixing of the constituent components of the diffuser in the liquid phase and then forming a film or sheet by, e. g. , extrusion or casting, from which a screen suitable for displaying images projected thereupon may be constructed. The respective light dispersing and matrix components are chosen by their respective viscosities, interfacial surface energies, and refractive index differential. In an embodiment, it has been found that when the viscosity ratio of first (matrix) optically clear material to second (light dispersing) optically clear is between 0. 05 and 10, the first optically clear material disperses or breaks the second optically clear material up into particles of a desired diameter during mixing or mastication of the two optically clear materials while in the fluid phase.

US Patent:

56598629, Aug 19, 1997

Filed:

Sep 19, 1994

Appl. No.:

8/308553

Inventors:

Meftah U. Mahmud - Nashua NH
John F. Coburn - Malden MA
Robert G. Schmidt - Nashua NH

Assignee:

Nashua Corporation - Nashua NH

International Classification:

G03G 1306

US Classification:

399276

Abstract:

A developer roll for use in electrophotographic copying machines and printers. The roll has a coating which is electrically conductive. Also disclosed are the materials comprising the roll and its coating, and a process for formulating the materials and for applying them to the surface of the roll by powder-coating.