Solvent coated metallic thermal mass transfer donor sheets
AssigneeMinnesota Mining and Manufacturing Company
InventorsHsin-hsin Chou, Christopher E. Kunze, Peter A. Vono
Life of this patent
Estimating the term…
Abstract
A thermal mass transfer donor element comprising a carrier layer having on one surface thereof a mass transferable layer of thermoplastic organic polymeric binder and metal flakes, said metal flakes having an average ratio of length to thickness of greater than 20:1.
Claims25
A thermal mass transfer donor element comprising a carrier layer having on one surface thereof a mass transferable layer of thermoplastic organic polymeric binder and metal flakes, said metal flakes having an average ratio of length to thickness of greater than 20:1.
A process for forming a thermal mass transfer donor element which can provide a metal image comprising the steps of:
- a) providing a coating solution comprising a solvent, metal flakes having an average ratio of length to thickness of at least 20:1, and a thermoplastic binder,
- b) coating said solution onto one surface of a carrier layer, and
- c) drying said solution to form a layer of metal flakes and binder.
A thermal mass transfer donor element comprising a carrier layer having one surface in continuous contact with a thermal mass transferable layer, and at least one thermal mass transferable layer over said one surface comprising metal flakes, having an average ratio of length to thickness of greater than 20:1, in a thermoplastic organic polymeric binder.
A thermal mass transfer donor element comprising a carrier layer having on one surface thereof in continuous contact with said surface, a material consisting essentially of a thermal mass transferable layer comprising a thermoplastic organic polymeric binder and metal flakes, said metal flakes having an average ratio of length to thickness of greater than 20:1.
A thermal mass transfer donor element consisting of a carrier layer having on one surface thereof in continuous contact with said surface, a thermal mass transferable layer comprising a thermoplastic organic polymeric binder and metal flakes, said metal flakes having an average ratio of length to thickness of greater than 20:1, and having on the opposite surface thereof a backside non-stick coating.
A thermal mass transfer donor element consisting of at least one thermal mass transferable layer, which comprises metal flakes, having an average ratio of length to thickness of greater than 20:1, in a thermoplastic organic polymeric binder;
- a carrier layer;
- and a release layer which is interposed between the carrier layer and a thermal mass transferable layer and which is in continuous contact with the carrier layer and said thermal mass transferable layer.
A method for producing a metallic image comprising:
- contacting a receptor with a thermal mass transfer donor element which comprises a carrier layer, having one surface in continuous contact with a thermal mass transferable layer, and at least one thermal mass transferable layer comprising metal flakes, having an average ratio of length to thickness of greater than 20:1, in a thermoplastic organic polymeric binder, said contact being such that a thermal mass transferable layer touches the receptor;
- heating the donor sheet in an imagewise manner thereby transferring metal flakes and organic polymeric binder in an imagewise manner to said receptor;
- and
- separating said receptor and mass transfer donor element.
Dependencies are inferred from the claim text.