Polaroid Corporation

Edward J Dombrowski

Robert L Jones

John C Warner

Jiyue Yang

John R McPherson, Sr

Stephen J Telfer

John L Marshall

Russell A Gaudiana

William T Vetterling

Alain Bouchard

Michael J Arnost

Michael S Viola

Yongqi Deng

Mark R Mischke

Fariza B Hasan

Serajul Haque

Donna J Guarrera

There is described a thermal recording system which utilizes a donor element comprising a substrate and a thermal transfer material layer having a dye-containing phase which is amorphous and wherein the dye or dyes present in the amorphous phase form a continuous film. Imagewise heating of the medium transfers portions of the transfer layer to a receiver sheet, thus forming an image. The transfer layer may also include a non-dye phase comprising a thermal solvent. During the heating of the donor element, the crystalline thermal solvent melts and dissolves or liquefies at least a portion of the dye-containing phase, thereby lowering the temperature at which transfer of the transfer layer occurs.

Thermal transfer recording system

There is described a novel thermographic recording film, and more specifically, a novel image-forming system incorporated therein comprising at least one layer and including and a Lewis acid material, a di- or triarylmethane thiolactone dye precursor, an acidic organic material, a binder and a thermal stabilizer. Thermographic recording films comprising the novel image-forming system of the present invention exhibit excellent thermal stability, and desirable minimum optical densities, indicative of substantially less premature image development at elevated environmental temperatures. Embodiments of the invention wherein the thermographic recording films further include a light insensitive organic silver salt, a reducing agent, a binder and, preferably, a toning agent, show substantially enhanced image density.

Thermographic recording

There is described a novel thermographic recording film, and more specifically, a novel image-forming system incorporated therein which employs both thiolactone and silver reduction chemistries. Thermographic recording films comprising the novel image-forming system of the present invention exhibit excellent thermal sensitivity and visual color saturation, enhanced image density, and desirable visual minimum optical densities.

Thermographic recording films

There is described, in thermographic recording films, the use of a compound containing at least two epoxide moieties in the protective layer and/or in a layer on top of the protective layer of thermographic recording films to reduce gouging and streaking of the printed image film and to reduce head build-up on the thermal printhead.

This invention relates to thermographic recording films including both a topcoat and a washcoat. The washcoat comprises at least one quaternary ammonium salt including at least one hydroxyl functional group, and a compound containing at least two epoxide moieties. The subject washcoat, in conjunction with the topcoat, reduces printer head build-up and streaking of the printed image film while simultaneously increases the anti-stat and slip properties of the film.

Thermographic recording film including improved washcoat

This invention relates to the use of a compound containing at least two epoxide moieties in the protective topcoat layer and/or in a layer on top of the protective topcoat layer of certain thermographic recording films to reduce gouging and streaking of the printed image film and to reduce head build-up on the thermal printhead.

Growing community of inventors

Bellingham, MA, United States of America

Edward J Dombrowski