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...
Patent
1993-09-20
1995-04-25
Schwartz, Pamela R.
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...
503207, 503214, B41M 530
Patent
active
054098793
ABSTRACT:
The reversible thermal recording medium of the invention is composed by forming on a substrate a porous reversible thermal recording layer which reversibly shows transparent states and opaque states by cooling after two modes of heating, by means of organic crystal particles dispersed in matrix polymer. One method for manufacturing a reversible thermal recording medium of the invention includes a coating step for applying a paint in which a matrix polymer, organic crystal particles and pore forming particles are contained and at least one of matrix polymer and organic crystal particles is dispersed in a granular form on a substrate to form a coating layer; plus a solvent contact step of eluting the pore forming particles by causing the coating layer to come into contact with a solvent in which the pore forming particles are soluble; and a drying step. Another method for manufacturing the reversible thermal recording medium of the invention includes a coating step of applying a paint in which a matrix polymer and organic crystal particles are contained and at least one of matrix polymer and organic crystal particles is dispersed in a granular form on a substrate to form a coating layer; plus a solvent contact step of causing the coating layer to come into contact with a solvent capable of dissolving the matrix polymer and organic crystal particles; and a drying step.
REFERENCES:
patent: 4917948 (1990-04-01), Hotta
Kishimoto Yoshio
Suzuki Masa-aki
Ueno Takayoshi
Matsushita Electric - Industrial Co., Ltd.
Schwartz Pamela R.
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