| 摘要 |
This invention relates to a thermographic process of image formation and more particularly to such a process for forming images by heating, imagewise, to a temperature above a softening temperature, but below the thermal decomposition temperature, a solid layer of a mixture of a thermoplastic, amorphous, organic polymer and a liquid plasticizer therefor, the mixture being capable of existing in a metastable state and a stable state for a period sufficient to convert the stable polymer to the metastable state, heating the entire surface of the layer to a temperature between the softening temperatures of the stable and metastable state, and converting the softened exposed image areas to a visible image, e.g., by applying finely divided colored particles to the layer and removing them from non-exposed areas or thermally exposed image areas are transferred to a separate image receptive surface. The simple procedure is a dry process, and images of high quality and stability are obtained rapidly.
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