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Title:
THERMAL RECORDING MATERIAL
Document Type and Number:
Japanese Patent JPS5693589
Kind Code:
A
Abstract:

PURPOSE: To obtain the thermal recording material which is improved in terms of the lowering of reservability as color forming constituents turn to be fine and of pressure color development by making a color-removing agent exist in a supporting body and between the supporting body and a thermodeveloped layer.

CONSTITUTION: In the thermal recording material wherein the thermodeveloped layer containing colorless or lightly-colored leuco-dye (e.g. crystal violet lactone, etc.) and acid material developing the leuco-dye by heating (e.g. bisphenol A, etc.) is provided on the supporting body such as paper, the color-removing agent is made to exist in the supporting body and/or between the supporting body and the thermodevelopd layer. As the color-removing agent, the alkylene oxide additive of bisphenol and the like, methylolamido and bisamido, etc. whose melting point is 110°C or above are shown as examples. This color-removing agent is made to exist in the supporting body by mixing the same in a size liquid, or a color-removing layer is formed by applying the agent to the supporting body.


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Inventors:
HONDA YASUHIRO
MOTOSUGI YUKINORI
Application Number:
JP17042079A
Publication Date:
July 29, 1981
Filing Date:
December 28, 1979
Export Citation:
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Assignee:
RICOH KK
International Classes:
B41M5/28; B41M5/30; B41M5/40; (IPC1-7): B41M5/18