Abstract:
A reversible thermosensitive recording medium including a support, a reversible thermosensitive recording layer provided on the support and an antistatic layer, wherein the antistatic layer is provided on at least one of the reversible thermosensitive recording layer and a surface of the support opposite to the surface thereof on which the reversible thermosensitive recording layer is provided, wherein the antistatic layer contains spherical fillers and a curable conductive polymer, and wherein the spherical fillers satisfy the following Expression (1): 4 ≤ average particle diameter of the spherical fillers/thickness of the antistatic layer ≤ 6... Expression (1)
Abstract:
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.
Abstract:
The invention provides novel hydroxyphenylhydroxy- alkylamides; reversible thermosensitive compositions and reversible thermal printing materials which contain the amides and are excellent in stability of color development, erasability, sensitivity of color development, the balance between color developing temperature and erasing temperature, and thermal stability of the colored state in storage; and a color developing and reducing process with the amides, more specifically, hydroxyphenylhydroxyalkylamides represented by the general formula (I); and reversible thermosensitive compositions and reversible thermal printing materials which each contain both an electron-accepting compound as described above and an electron-donating color-forming compound: (I) (wherein n is an integer of 1 to 3; and A is straight-chain hydroxyalkyl having a hydroxyl group on a non-terminal carbon atom). The printing materials can cause color development or erasing by temperature control.
Abstract:
A reversible thermal recording medium comprising a sheetlike substrate and a thermal recording layer which is formed on the support and contains a substantially colorless dye precursor and a developer which can cause the precursor to undergo color development and color extinction reversibly, in which the developer contains an aromatic compound of general formula (1) and which may optionally have, on the thermal recording layer, an overcoat layer preferably containing a polymer cured by electron beams or ultraviolet rays, wherein R is naphthyl or (lower alkoxy)-substituted phenyl; Y is -NHCO-, -SCONH-, -CONHCO-, NHCONH-, -OCO-, -NHCOO-, -NHCOS-, -S-, NHCONHSO2-, -O-, -OCSNH-, -CONHNH-, -OCONHSO2-, -CO-, -SCSNH-, -NHSO2-, -CONHSO2-, -OSO2-, -NHCSNH-, or -N=CH-; and n is an integer of 11 to 30.
Abstract:
A reversible thermal recording material which enables images to be formed with a high contrast and erased and can store images having stability even after the lapse of time under the conditions of daily life. The material comprises a substrate having thereon a dye precursor which is usually colorless or light-colored, and a reversible developer capable of causing a reversible change in color tone of the dye precursor by taking advantage of a cooling rate difference after heating, and is characterized by further comprising at least one particular color disappearance promoter containing a long-chain alkyl group. Further provided is a reversible thermal recording material which enables images to be erased by a simple method, such as by allowing the recording material to stand in a natural environment or drying the recording material with a dryer. This material is characterized in that a specified compound containing a long-chain alkyl group and an imide group is used as a reversible developer in combination with a particular amine compound containing a long-chain alkyl group or an imide compound as a color disappearance promoter.
Abstract:
A visual display dependent upon the use of thermochromic materials is formed as a thin structure on a substrate sheet (21) with a vapor deposited conductive film heater (40) applied thereto. The current is applied to the heater through parallel opposed bus bars (52, 54). A non-thermochromic image layer (22) is mounted on the substrate, with one or more thermochromic image layers (24, 26, 28) thereover. One thermochromic image layer (24) covers a first portion of a visible display area (30) of the substrate, while a second thermochromic layer (26) covers a second portion of the visible display area, with the first and second portions overlapping slightly along contiguous edges thereof. As the display is heated and cooled, the thermochromic materials of the thermochromic imager layers reach their respective transition temperatures to change state from opaque to colorless or vice-versa, or from one color to another. The visual display is mounted within an enclosure.