Thermal recording material for display and image display device utilizing the same
AssigneeCanon Kabushiki Kaisha
InventorsYoshihiro Oguchi, Toshikazu Ohnishi, Yoshio Takasu, Kozo Arahara, Akihiro Mouri, Katsumi Kurematsu, Tsutomu Toyono, Shuzo Kaneo
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Abstract
Thermal recording material has a plate- or film-formed polymer blend layer which is in a mutually dissolved transparent state below a certain temperature and in a phase-separated opaque state above said temperature. This thermal recording material is employed in an image display device, which is provided, in succession, with a recording heater movable along the recording material, an image display unit, a uniform heater and a gradual cooler for image erasure.
Claims10
An image display device comprising:
- a thermal recording material composed of a heat-resistance flexible sheet substrate and a polymer blend layer which is provided on said substrate and which changes from a transparent state to an opaque state and retains said opaque state when heated to a certain temperature followed by rapid cooling but returns from said opaque state to the transparent state when heated again above said temperature and then gradually cooled;
- means for movably supporting said recording material;
- and
- thermal recording means for heating said recording material according to image information;
- a display unit for displaying opaque record on said recording material;
- and image erasing means by uniformly heating and then gradually cooling the recording material, in succession, along the moving direction of said recording material.
An image display device comprising:
- a thermal recording material composed of a heat-resistant flexible sheet substrate and a polymer blend layer which is provided on said substrate and which changes from a transparent state to an opaque state and retains said opaque state when heated to a certain temperature followed by rapid cooling but returns from said opaque state to the transparent state when heated above said temperature and then gradually cooled, wherein the substrate of said thermal recording material is composed of a transparent material, and a member having a property of absorbing heat is provided opposite to the display side of the display unit;
- means for movably supporting said recording material;
- thermal recording means for heating said recording material according to image information;
- a display unit for displaying an opaque record on said recording material;
- and
- image erasing means for uniformly heating and then gradually cooling the recording material, in succession, along the moving direction of said recording medium.
An image display device comprising:
- a thermal recording material composed of a heat-resistant flexible sheet substrate and a polymer blend layer which is provided on said substrate and which changes from a transparent state to an opaque state and retains said opaque state when heated to a certain temperature followed by rapid cooling but returns from said opaque state to the transparent state when heated above said temperature and then gradually cooled wherein the substrate of said recording material is of a dark color including black color;
- means for movably supporting said recording material;
- and
- thermal recording means for heating said recording material according to image information;
- a display unit for displaying an opaque record on said recording material;
- and
- image erasing means by uniformly heating and then gradually cooling the recording material, in succession, along the moving direction of said recording medium.
Dependencies are inferred from the claim text.