Process for a Thermal Transfer of a Liquid Crystal Film Using a Transfer Element
First Claim
1. A transfer process for forming a marking on a surface comprising the steps ofa) providing a transfer element comprising a light-to-heat conversion layer and a transfer layer comprising a liquid crystal material,b) placing the transfer element onto a receiving surface with the transfer layer directed to the surfacec) irradiating the assembly selectively with a radiation source in a manner effective to transfer portions of the transfer layer corresponding to the irradiated areas onto the surface.
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Abstract
The invention relates to a laser-induced process that employs a transfer element comprising a liquid crystal material for a thermal transfer onto a receiving surface. The process is suitable for generating markings with various appearance or optical effects on a surface of choice. The transfer element comprises a light-to-heat conversion layer and a transfer layer The transfer layer comprises a liquid crystal material, especially a liquid crystal polymer film.
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Citations
14 Claims
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1. A transfer process for forming a marking on a surface comprising the steps of
a) providing a transfer element comprising a light-to-heat conversion layer and a transfer layer comprising a liquid crystal material, b) placing the transfer element onto a receiving surface with the transfer layer directed to the surface c) irradiating the assembly selectively with a radiation source in a manner effective to transfer portions of the transfer layer corresponding to the irradiated areas onto the surface.
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7. A thermal transfer element comprising at least
a light-to-heat conversion layer, and a transfer layer, comprising at least a liquid crystal material.
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11. Composition for forming a liquid crystalline thermal transfer layer comprising at least
one or more polymerisable mesogens, a resin, and a polymerisation initiator.
Specification