Abstract: A heating device capable of evenly heating a thermal recording medium without increasing the cost of the device is disclosed. The heating device evenly heats the recording surface of a thermally-reversible recording card by conducting the heat energy transferred from a heat generating member by way of a heating member, made of aluminum having high heat conductivity and high heat capacity characteristics. By this feature, it becomes possible to accurately erase the information recorded on the recording card and to use an inexpensive heat generating member as the heat generating member.

Abstract: An information recording and erasing apparatus configured to record information on and erase other information from a thermo-sensitive recording medium which medium is capable of heat-reversible coloring and discoloring, the information recording and erasing apparatus includes an erasing unit configured to move the thermo-sensitive recording medium from one side to another side, heat the thermo-sensitive recording medium, and erase the other information recorded in the thermo-sensitive recording medium; and a recording unit provided in a direction perpendicular to a moving direction of the thermo-sensitive recording medium with the erasing unit, the recording unit being configured to record the information in the thermo-sensitive recording medium where the other information is erased by the erasing unit.

Abstract: To provide an image processing apparatus which preferably obtains information concerning a record condition or erasure condition varying by each reversible display recording medium. The image processing apparatus which forms an image on the reversible display recording medium containing the record condition or erasure condition varying by each manufacturer, model number, version, or lot number, in which the image processing apparatus containing a condition information obtaining unit configured to obtain condition information concerning the record condition or erasure condition of the reversible display recording medium from the reversible display recording medium.

Abstract: An apparatus for managing a printed document includes a storage medium capable of reversibly storing and erasing information, a printing/erasure device for executing printing to the storage medium and erasing a printed record, a document management server for managing information and security of the information, a write device for adding information onto the storage medium, and a monitor device for monitoring takeout of a printed document. A storage medium ID for identifying an individual medium is imparted to each medium. When printing, write, etc, are performed to the storage medium, the document management server manages the storage medium ID and a security level of a printed document file. The monitor device gives a warning not to take out the printed document in accordance with the security level of the document when the storage medium of printed documents is to be taken out.

Abstract: To provide a reversible thermosensitive recording medium comprising a support, a thermosensitive recording layer formed on the support, and a protective layer formed on the thermosensitive recording layer, wherein the thermosensitive recording layer contains an electron donative coloring compound and an electron acceptive compound, and the color tone reversibly changes depending on the temperature, and the protective layer contains a polymer of a composition containing two kinds of acrylate compounds selected from an acrylate compound having a pentaerythritol group and an acrylate compound having a dipentaerythritol group.

Abstract: The reversible thermosensitive recording medium according to the present invention comprises a support, a thermosensitive layer and a protective layer in order, the thermosensitive layer comprises an electron-donating coloring compound and an electron-accepting compound and reversibly changes the color depending on temperatures, and the protective layer comprises a reactive heterocyclic compound, and inorganic fine particles of which surface is at least partially treated into hydrophobic, alternatively the protective layer comprises inorganic fine particles of which number-average particle size is 100 nm or less and of which surface is at least partially coated with organic silane compounds.

Abstract: The reversible thermosensitive recording medium according to the present invention comprises a support, a thermosensitive layer and a protective layer in order, the thermosensitive layer comprises an electron-donating coloring compound and an electron-accepting compound and reversibly changes the color depending on temperatures, and the protective layer comprises a reactive heterocyclic compound, and inorganic fine particles of which surface is at least partially treated into hydrophobic, alternatively the protective layer comprises inorganic fine particles of which number-average particle size is 100 nm or less and of which surface is at least partially coated with organic silane compounds.

Abstract: A reversible thermosensitive recording medium including a substrate, and a thermosensitive layer including an electron donating coloring compound, an electron accepting compound, and a phenol anti-oxidation agent containing one or more sulfur atoms having an alkyl group on one side. In addition, the thermosensitive layer reversibly changes its color tone depending on temperature to reversibly record and erase an image thereon.

Abstract: An information recording-displaying card, includes: a core sheet; and an over sheet bonded to the core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer disposed on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of relatively forming a coloring state and a decolorizing state, with a difference in at least one of heating temperature, and cooling rate after heating. The over sheet is embossable in an upper portion thereof, functions as an image displaying section, and meets the following condition (A) and condition (B): (A) (the over sheet's upper limit temperature for erasing ?30° C.)?(temperature of a storage elasticity E? (1.0 E+08) Pa)?200° C., and (B) 1.0 E+04 Pa?(the storage elasticity E? of the over sheet at 180° C.)?5.0 E+07 Pa.

Abstract: An information recording-displaying card, includes: core sheet; and over sheet bonded to core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of forming coloring state and decolorizing state, with difference in at least one of the following: heating temperature, and cooling rate after heating. The over sheet is embossable in upper portion thereof, functions as image displaying section, and meets the following conditions (A), (B) and (C): (A) (over sheet's upper limit temperature for erasing?30° C.)>(over sheet's temperature of storage elasticity E? (1.0 E+08) Pa), (B) 10 ?m or less of surface waviness WCM, and (C) 1.0 E+02 Pa?(storage elasticity E? of reversible thermosensitive over sheet at 180° C.)?5.0 E+07 Pa.

Abstract: An information recording-displaying card, includes: core sheet; and over sheet bonded to core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of forming coloring state and decolorizing state, with difference in at least one of the following: heating temperature, and cooling rate after heating. The over sheet is embossable in upper portion thereof, functions as image displaying section, and meets the following conditions (A), (B) and (C): (A) (over sheet's upper limit temperature for erasing?30° C.)>(over sheet's temperature of storage elasticity E? (1.0 E+08) Pa), (B) 10 ?m or less of surface waviness WCM, and (C) 1.0 E+02 Pa?(storage elasticity E? of reversible thermosensitive over sheet at 180° C.)?5.0 E+07 Pa.

Abstract: An information recording-displaying card, includes: a core sheet; and an over sheet bonded to the core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer disposed on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of relatively forming a coloring state and a decolorizing state, with a difference in at least one of: heating temperature, and cooling rate after heating. The over sheet is embossable in an upper portion thereof, functions as an image displaying section, and meets the following condition (A) and condition (B): (A) (the over sheet's upper limit temperature for erasing ?30° C.)?(temperature of a storage elasticity E? (1.0 E+08)Pa)?200° C., and (B) 1.0 E+04 Pa?(the storage elasticity E? of the over sheet at 180° C.)?5.0 E+07 Pa.

Abstract: The reversible thermosensitive recording medium according to the present invention comprises a support, a thermosensitive layer and a protective layer in order, the thermosensitive layer comprises an electron-donating coloring compound and an electron-accepting compound and reversibly changes the color depending on temperatures, and the protective layer comprises a reactive heterocyclic compound, and inorganic fine particles of which surface is at least partially treated into hydrophobic, alternatively the protective layer comprises inorganic fine particles of which number-average particle size is 100 nm or less and of which surface is at least partially coated with organic silane compounds.

Abstract: A reversible thermosensitive recording medium comprising an concealing layer provided between a reversible thermosensitive recording layer which is reversibly changed in its color by heat and a photo-thermal conversion layer which absorbs light with generating heat, wherein the concealing layer has an optical characteristic that the ratio of a light absorptivity of light having 555 nm wavelength, in comparison with a light absorptivity of laser light wavelength, is 80% or less. This reversible thermosensitive recording medium has a concealing layer to conceal the color of the photo-thermal conversion layer, thereby the visibility and the contrast of the obtained images are significantly improved, further more, durability in repeated used is also significantly improved.

Abstract: A reversible thermosensitive recording medium comprising an concealing layer provided between a reversible thermosensitive recording layer which is reversibly changed in its color by heat and a photo-thermal conversion layer which absorbs light with generating heat, wherein the concealing layer has an optical characteristic that the ratio of a light absorptivity of light having 555 nm wavelength, in comparison with a light absorptivity of laser light wavelength, is 80% or less. This reversible thermosensitive recording medium has a concealing layer to conceal the color of the photo-thermal conversion layer, thereby the visibility and the contrast of the obtained images are significantly improved, further more, durability in repeated used is also significantly improved.

Abstract: A reversible thermosensitive recording medium including a substrate; a reversible thermosensitive recording layer on the substrate, which includes an electron donating coloring compound and an electron accepting compound, wherein the recording layer achieves a colored state when heated at a temperature not lower than an image forming temperature and then cooled at a first cooling speed, and the recording layer in the colored state achieves a non-colored state when heated at a temperature lower than the image forming temperature and not lower than an image erasing temperature or when heated at a temperature not lower than the image forming temperature and then cooled at a second cooling speed relatively slow compared to the first cooling speed; and a crosslinked polymer layer including a crosslinked polymer having an ultraviolet absorbing structure.

Abstract: A reversible thermosensitive recording medium including a substrate; a reversible thermosensitive recording layer on the substrate, which includes an electron donating coloring compound and an electron accepting compound, wherein the recording layer achieves a colored state when heated at a temperature not lower than an image forming temperature and then cooled at a first cooling speed, and the recording layer in the colored state achieves a non-colored state when heated at a temperature lower than the image forming temperature and not lower than an image erasing temperature or when heated at a temperature not lower than the image forming temperature and then cooled at a second cooling speed relatively slow compared to the first cooling speed; and a crosslinked polymer layer including a crosslinked polymer having an ultraviolet absorbing structure.

Abstract: A reversible thermosensitive recording material which includes a recording layer including an electron donating coloring agent and an electron accepting coloring developer and in which an image is reversibly formed and erased by appropriately heating and cooling the recording layer, wherein the recording layer further includes an erasure promoter including one or more secondary amide group having the following formulas (1), (2) or (3): wherein each of R1, R2, R3, R4 and R5 independently represents a hydrocarbon group which is optionally substituted and which may be saturated or unsaturated, and wherein R1 and R2 are optionally combined to form a ring which may include one or more of a nitrogen atom, an oxygen atom and a sulfur atom. Alternatively, the erasure promoter may include two or more secondary amide groups having formula (1), (2) or (3).

Abstract: A reversible thermal recording method using a color/non-color type reversible thermosensitive recording material which has a recording layer formed overlying at least one side of a substrate and including an electron donating coloring agent and an electron accepting color developer and which reversibly forms a colored state and a non-colored state by being appropriately heated and cooled. The recording layer having images of the colored state which have been formed in the recording layer is heated to erase the image, and imagewise heated either at substantially the same time as, or after, the image erasing operation to record new images therein, and then relatively rapidly cooled to maintain the new images. A reversible thermal recording apparatus therefor is also provided.

Abstract: A thermal image transfer recording sodium includes a support and a thermal image transfer ink layer formed on the support. The thermal image transfer ink layer contains a coloring agent, a resin with a melting point of 120.degree. C. or more and an SP value of 10.5 to 12.5, and a melt viscosity lowering material for lowering the melt viscosity of the resin, with the compatibility of the resin and the malt viscosity lowering material, measured by a transparency measurement method, being 0.20 or less, or with the melt viscosity at 150.degree. C. of the thermal image transfer ink layer being in the range of 1.times.10.sup.2 to 5.times.10.sup.6 poise.