Reversible theromosensitive coloring recording method, recording

Details Reversible theromosensitive coloring recording method, recording Reversible theromosensitive coloring recording method, recording

1993-03-09

1996-09-03

Hess, Bruce

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Method of use, kit, or combined with marking instrument or...

503204, 503226, B41M 534

Patent

active

055523641

ABSTRACT:
A reversible thermosensitive coloring recording method for producing multi-color images by use of a reversible thermosensitive coloring recording medium which is composed of a support and a reversible thermosensitive coloring recording layer containing a plurality of reversible thermosensitive coloring compositions, each coloring composition being independently present separated from the other coloring compositions, and capable of reversibly forming a color development state with a different color in a predetermined color development temperature range, and a decolorization state in a predetermined decolorization temperature range by the application of heat thereto and maintaining the above two states at room temperature, the decolorization temperature range being located lower in terms of temperature than the color development temperature range therefor, comprises the steps of: temporarily applying heat to the recording medium to a color development temperature at which at least two of the coloring compositions are colored or to a temperature higher than the color development temperature to obtain a mixed coloring state, and decolorizing at least one of the coloring compositions which have been colored, thereby producing multi-color images.

REFERENCES:
patent: 3792481 (1974-02-01), Nagashima et al.
patent: 3924049 (1975-12-01), Truitt et al.
patent: 4311750 (1982-01-01), Kubo et al.

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