Sheet material for thermal transfer imaging
AssigneePolaroid Corporation
InventorHoward G. Schild
Life of this patent
Estimating the term…
Abstract
Sheet materials for use in thermal transfer imaging systems comprising a donor sheet and a receiving sheet are provided wherein the donor sheet and the receiving sheet do not stick to each other during thermal processing.
Claims36
Sheet materials for use in combination in thermal diffusion transfer imaging comprising a donor sheet and a receiving sheet, the donor sheet comprising a support, an image-forming material capable of being transferred by heat and a polymer system comprising at least one polymer as a binder for the image-forming material, and the receiving sheet comprising a polymer system comprising at least one polymer capable of receiving said image-forming material from said donor sheet upon application of heat thereto, the polymer system of said receiving sheet being incompatible/immiscible with the polymer system of said donor sheet at the receiving sheet/donor sheet interface so that there is no adhesion between the donor sheet and the receiving sheet during thermal processing, said donor sheet polymer system and said receiving sheet polymer system being substantially free of a release agent.
A process for thermal diffusion transfer imaging comprising placing a donor sheet and an image-receiving sheet adjacent to one another and heating selected portions of the donor sheet so as to transfer said image-forming material from the donor sheet to the receiving sheet, the donor sheet comprising a support, an image-forming material capable of being transferred by heat and a polymer system comprising at least one polymer as a binder for the image-forming material, and the receiving sheet comprising a polymer system comprising at least one polymer capable of receiving said image-forming material from said donor sheet upon application of heat thereto, the polymer system of said receiving sheet being incompatible/immiscible with the polymer system of said donor sheet at the receiving sheet/donor sheet interface so that there is no adhesion between the donor sheet and the receiving sheet during thermal processing, said donor sheet polymer system and said receiving sheet polymer system being substantially free of a release agent.
Dependencies are inferred from the claim text.