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Nobuyuki Tamaoki

Hiroo Matsuda

Shigeaki Nimura

Hiroyuki Sugimoto

Yoshishige Kida

Kyohji Tsutsui

There is disclosed a reversible recording material having a liquid crystal mixture comprising at least two cholesteric liquid crystal compounds. The cholesteric liquid crystal compounds which are contained in the reversible recording material has a molecular weight of less than 2000 and a grass transition temperature equal to or more than 30&deg; C. The two cholesteric liquid crystal compounds are compatible each other. After at least a part of the reversible recording material is heated to a temperature where the part of the reversible recording material becomes a cholesteric liquid crystal phase, the part of the reversible recording material is rapidly cooled down to below the glass transition temperature thereof, so that a reflecting color from the reversible recording material can be fixed to achieve a recording.

Reversible recording material based on thermal energy

A reversible recording medium has a support, a reversible light absorbing layer formed on the support, and, a reversible cholesteric reflection layer formed on the reversible light absorbing layer, containing a cholesteric liquid crystalline compound capable of assuming a cholesteric liquid crystalline phase reversibly showing iridescent colors by selective reflection. A method for reversibly recording an image in the above-mentioned recording medium, and a reversible recording apparatus using the above-mentioned recording medium are also disclosed.

Reversible recording medium, and reversible recording method and apparatus using the same

Cholesteryl compound and rewritable full-color thermosensitive recording material

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Ibaraki, Japan

Nobuyuki Tamaoki