초록 ▼

A thermally sensitive record medium is disclosed. Data is generated on the record medium in response to an application of heat. The record medium is capable of generating data images in more than one color by exposing the medium to more than one temperature level in areas to be imaged. Overlap or in

A thermally sensitive record medium is disclosed. Data is generated on the record medium in response to an application of heat. The record medium is capable of generating data images in more than one color by exposing the medium to more than one temperature level in areas to be imaged. Overlap or interference between two colors is avoided by utilizing at least one color-forming system which requires a thermal decomposition of one system component before it can be reacted to yield color. The record material is made by coating individual layers, each containing a color-forming system or preferably by coating a single layer including all of the color-forming systems.

대표청구항 ▼

A multi-color thermally responsive record material comprising a support sheet bearing a first thermally-sensitive color-forming composition comprising particles of a chromogenic material and a coreactant material in contiguous relationship whereby the melting or sublimation of either material produc

A multi-color thermally responsive record material comprising a support sheet bearing a first thermally-sensitive color-forming composition comprising particles of a chromogenic material and a coreactant material in contiguous relationship whereby the melting or sublimation of either material produces a first change in color by reaction between the two, and a second thermAlly-sensitive color-forming composition comprising particles of a thermally decomposable material and a coreactant material in contiguous relationship, whereby decomposition of the thermally decomposable material forms a chromogenic material which produces a different change in color by reaction with the coreactant material, said decomposition occurring at a higher temperature than said melting or sublimation, said first and second compositions being either in separate contiguous superposed layers or in a single layer on the support sheet.