Erasable image forming material
AssigneeKabushiki Kaisha Toshiba
InventorsSatoshi Takayama, Shigeru Machida, Kenji Sano, Koichi Tsunemi, Shuitsu Sato
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Abstract
An erasable image forming material includes a color former, a developer, a binder resin, and a polymer decolorizer having an electron donating group capable of physically or chemically adsorbing the developer. This polymer decolorizer is, e.g., a polymer compound having a sugar skeleton, representatively starch. This image forming material can form sharp images and erase images by heat or a solvent to achieve a good erased state.
Claims15
An erasable image forming material comprising a color former, a developer, a matrix agent, and a polymer decolorizer having an electron donating group capable of physically or chemically adsorbing said developer.
An erasable image fonning material comprising a color former, a developer, a matrix agent, and a polymer decolorizer, wherein said polymer decolorizer is at least one compound selected from the group consisting of a polymer compound having a sugar skeleton, polyamino acid, a polymer compound having a hydroxyl group, a polymer compound having an amino group, polyvinylacetal, polyacrylonitrile, and copolymers thereof.
Dependencies are inferred from the claim text.