摘要:
The present invention provides a reversible thermosensitive recording medium including a support and a thermosensitive recording layer thereon, in which the thermosensitive recording layer comprises an electron-donating coloring compound and an electron-accepting compound, and the thermosensitive recording layer is capable of forming a relatively developed condition and a relatively erased condition depending on at least one of the difference of heating temperatures and the difference of cooling rates following to heating, and in which the electron-accepting compound comprises a phenol compound represented by the General Formula (1): where, in the General Formula (1) “l” represents an integer of 1 to 3, “m” represents an integer of 1 or more, and “n” represents an integer of 7 or more.
摘要:
The present invention provides a reversible thermosensitive recording medium including a support and a thermosensitive recording layer thereon, in which the thermosensitive recording layer comprises an electron-donating coloring compound and an electron-accepting compound, and the thermosensitive recording layer is capable of forming a relatively developed condition and a relatively erased condition depending on at least one of the difference of heating temperatures and the difference of cooling rates following to heating, and in which the electron-accepting compound comprises a phenol compound represented by the General Formula (1): where, in the General Formula (1) “l” represents an integer of 1 to 3, m represents an integer of 1 or more, and n represents an integer of 7 or more.
摘要:
The present invention provides a reversible thermosensitive recording medium including a support and a thermosensitive recording layer thereon, in which the thermosensitive recording layer contains an electron-donating coloring compound and an electron-accepting compound, and the thermosensitive recording layer is capable of forming a relatively developed condition and a relatively erased condition depending on at least one of the difference of heating temperatures and the difference of cooling rates following to heating, and in which the electron-accepting compound contains a phenol compound expressed by General Formula (1): where, in the General Formula (1), “l” represents an integer of 1 to 3 and “m” represents an integer of 23 or more.
摘要:
The present invention provides a reversible thermosensitive recording medium including a support and a thermosensitive recording layer thereon, in which the thermosensitive recording layer contains an electron-donating coloring compound and an electron-accepting compound, and the thermosensitive recording layer is capable of forming a relatively developed condition and a relatively erased condition depending on at least one of the difference of heating temperatures and the difference of cooling rates following to heating, and in which the electron-accepting compound contains a phenol compound expressed by General Formula (1): where, in the General Formula (1), “l” represents an integer of 1 to 3 and “m” represents an integer of 23 or more.
摘要:
A reversible thermosensitive coloring material which can reversibly achieve a relatively colored state and a relatively discolored state depending on a temperature to which the coloring material is heated or a cooling speed at which the coloring material is cooled after heated. The coloring material including an electron donating coloring agent; an electron accepting color developer configured to color the coloring agent; and a compound having a Zwitter ion in which a total of charges in a molecule of the compound is zero. A reversible thermosensitive recording material including a substrate and a reversible thermosensitive recording layer, which is located overlying the substrate and which includes the reversible thermosensitive coloring material.
摘要:
A reversible thermosensitive coloring material which can reversibly achieve a relatively colored state and a relatively discolored state depending on a temperature to which the coloring material is heated or a cooling speed at which the coloring material is cooled after heated. The coloring material including an electron donating coloring agent; an electron accepting color developer configured to color the coloring agent; and a compound having a Zwitter ion in which a total of charges in a molecule of the compound is zero. A reversible thermosensitive recording material including a substrate and a reversible thermosensitive recording layer, which is located overlying the substrate and which includes the reversible thermosensitive coloring material.
摘要:
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.
摘要:
A reversible thermosensitive composition including a coloring agent and a developer and capable of assuming a colored state and a discolored state depending upon the thermal hysteresis thereof. The developer is a phenol compound represented by the formula: ##STR1## wherein R.sup.1 represents a substituted or non-substituted divalent hydrocarbon group having at least two carbon atoms, R.sup.2 represents a substituted or non-substituted hydrocarbon group, X and Y represent, independently from each other, a divalent group having a hetero atom and r is an integer of between 1 and 3. A reversible thermosensitive recording medium includes a support and a thermosensitive layer including the above composition.
摘要:
A reversible thermosensitive coloring composition contains an electron-donating coloring compound and an electron-accepting compound, and is capable of reversibly assuming a color-developed state or a decolorized state depending upon the the temperature of the reversible thermosensitive coloring composition when heated, and/or the cooling rate of the reversible thermosensitive coloring composition when cooled after the heating thereof, with the electron-accepting compound being a compound of formula (I):A--R--X (I)wherein A represents a color-developing moiety; R represents an aliphatic hydrocarbon group comprising as the main chain thereof a straight chain hydrocarbon group having 8 or more carbon atoms, and may comprise a bivalent hetero-atom containing group and/or a bivalent aromatic group; and X represents a hetero-atom containing associative group. There is also provided a reversible thermosensitive recording medium comprising a support, and a thermosensitive recording layer formed thereon comprising the aforementioned reversible thermosensitive coloring composition.
摘要:
A reversible thermosensitive composition including a coloring agent and a developer and capable of assuming a colored state and a discolored state depending upon the thermal hysteresis thereof. The developer is a phenol compound represented by the formula: ##STR1## wherein R.sup.1 and R.sup.3 represent, independently from each other, a substituted or non-substituted hydrocarbon group, R.sup.2 represents a substituted or non-substituted aliphatic hydrocarbon group having at least two carbon atoms, with the proviso that the total number of carbon atoms of R.sup.1, R.sup.2 and R.sup.3 is at least 8, X and Y represent, independently from each other, a divalent group having a nitrogen atom or an oxygen atom and r is an integer of between 1 and 3.