Thermographic transfer elements and methods

Patent 4828638 Issued on May 9, 1989. Estimated Expiration Date:

June 24, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Heat transferable laminate
Patent #: 4581266
Issued on: 04/08/1986
Inventor: Magnotta

Thermographic transfer recording medium
Patent #: 4585688
Issued on: 04/29/1986
Inventor: Nakamura , et al.

Thermal transfer recording medium
Patent #: 4623580
Issued on: 11/18/1986
Inventor: Koshizuka , et al.

Thermal transfer recording medium
Patent #: 4681796
Issued on: 07/21/1987
Inventor: Maehashi , et al.

Thermal transfer recording medium Patent #: 4774128
Issued on: 09/27/1988
Inventor: Koshizuka , et al.

Inventor

Brown, Albert E.

Assignee

Chemicraft International, Inc.

Application

No. 07/065787 filed on 06/24/1987

US Classes:

156/234, Of portion only of lamina from carrier156/240, Transfer of printing or design427/265, Plural nonuniform coatings428/195.1, Discontinuous or differential coating, impregnation or bond (e.g., artwork, printing, retouched photograph, etc.)428/212, Including components having same physical characteristic in differing degree428/216, No layer or component greater than 5 mils thick428/32.77, Multiple layers transfer428/32.83, Wax in transfer layer428/336, 1 mil or less428/520, Ester, halide or nitrile of addition polymer428/522, Ester, halide or nitrile of addition polymer428/913, MATERIAL DESIGNED TO BE RESPONSIVE TO TEMPERATURE, LIGHT, MOISTURE, ETC.428/914TRANSFER OR DECALCOMANIA

Examiners

Primary: Robinson, Ellis P.
Assistant: Schwartz, P. R.

Attorney, Agent or Firm

Perman & Green

International Classes

B41M 5/42 (20060101)
B41M 5/40 (20060101)

Abstract

Transfer sheets and ribbons having a thin foundation carrying two superposed heat-transferable coatings. The base coating is cohesive, nonadhesive, substantially colorless and free of coloring matter and oil, and functions as a heat sink to insulate the top layer against excessive melting. The supercoating is more adhesive than the base coating, contains coloring matter and has excellent bonding properties for the base layer and also for receptive sheets including those having very smooth or glossy surfaces and relatively smooth closely-woven fabrics.Heat-transferred images are strongly adhered to the receptive sheet and produce no visible loss of clarity or sharpness if smudged by contact since the portion of the images exposed to contact is free of coloring matter.