摘要:
A receiver sheet for dye diffusion thermal transfer printing comprises a white molecularly oriented polyester film, supporting a layer of dye-receptive material on one surface, the other surface of the film being laminated to an undersheet of higher compliance than the film, and the thickness of the film lying within the range 10 to 50 .mu.m. The undersheet increases the effective compliance of the receiver, increasing the area heated during printing thereby to give better pixel transfer.
摘要:
A leuco dye having the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represent a lower alkyl group; R.sup.5 represents an .alpha.-naphthyl group, .beta.-naphthyl group or ##STR2## wherein R.sup.6 represents --NHCOR.sup.9, a halogen or an amino group which is unsubstituted or substituted by one or two C.sub.1 -C.sub.4 alkyl groups which are the same or different; and R.sup.7, R.sup.8 and R.sup.9 each represent hydrogen or a lower alkyl group, provided that when both R.sup.7 and R.sup.8 are hydrogen, R.sup.6 represents --NHCOR.sup.9 or bromine.These dyes absorb in the near-infrared region and yield colored images with a color developer therefor with excellent preservability.
摘要:
A thermosensitive recording material comprising a support material and a thermosensitive coloring layer formed thereon, in which thermosensitive coloring layer, colored images are formed by the reaction between a colorless or light-colored leuco dye and a color-developer of the following formula capable of inducing color formation in the leuco dye upon application of heat thereto, ##STR1## wherein X indicates halogen.
摘要:
A thermosensitive recording material is disclosed, which comprises a support material and a thermosensitive coloring layer formed thereon comprising a leuco dye, a color developer capable of inducing color formation in the leuco dye upon application of heat thereto, and a vinyl ether compound having the general formula, ##STR1## which serves as thermosensitivity improvement agent.
摘要:
A multi-color thermosensitive recording material comprising a support material, three or more thermosensitive coloring layer successively overlaid thereon and decolorizing intermediate layers interposed between the thermosensitive coloring layers, with at least the thermosensitive coloring layers except the thermosensitive coloring layer adjacent to the support material each comprising a basic leuco dye and a color developer capable of inducing color formation in the leuco dye upon application of thermal energy at a predetermined temperature, and each decolorizing intermediate layer containing a decolorizing agent which is capable of decolorizing the color developed in the thermosensitive coloring layer adjacent to the decolorizing intermediate layer when heated to a higher temperature than the predetermined coloring temperature for the thermosensitive coloring layer, which decolorizing agent for use in at least one of the decolorizing layers is (i) a N,N'-disubstituted aromatic diamide compound, (ii) a piperazine compound having at least two amido groups or (iii) a combination of the two compounds.
摘要:
A thermosensitive recording material is disclosed, which comprises a colorless or light-colored coloring material, and a color developer capable of inducing color formation in the colorless or light-colored coloring material upon application of heat thereto, in which the color developer is a phenolic material of the formula ##STR1## wherein R represents an straight-chain or branched alkylene group having at least one hydroxyl group.
摘要:
Coloring phthalide compounds having general formula [I], a method of producing the phthalide compounds and a recording material comprising as a coloring component any of the coloring phthalide compounds, are disclosed, ##STR1## wherein R.sup.1 and R.sup.2 each represent a straight chain or branched alkyl group having 1 to 6 carbon atoms, a cycloalkyl group, or a benzyl group, and R.sup.1 and R.sup.2 in combination may form a ring; R.sup.3 represents and alkyl group having 1 to 4 carbon atoms; R.sup.4 represents a dialkylamino group having 1 to 6 carbon atoms, a cyclic amino group or halogen; l is an integer of 0 to 4; A represents ##STR2## wherein R.sup.5 and R.sup.6 each represent a straight chain or branched alkyl group having 1 to 8 carbon atoms, a cycloalkyl group, or a benzyl group, R.sup.5 and R.sup.6 in combination may form a ring; and B is the same as A, or represents a phenyl group which may have a substituent.
摘要:
Coloring phthalide compounds having general formula [I] ##STR1## R.sup.1 represents hydrogen, an alkyl group, or halogen, m is an integer of 1 to 4, when m is 1, R.sup.2 represents hydrogen, an amino group, an alkylamino group, a dialkylamino group, a cyclic amino group, an alkyl group, or halogen, when m is 2 to 4, R.sup.2 represents halogen, R.sup.3 and R.sup.4 each represent a straight chain or branched alkyl group having 1 to 8 carbon atoms, a cyclic alkyl group, or a benzyl group, and R.sup.5 represents hydrogen, an alkyl group or an alkoxyl group; and a thermosensitive recording material including a thermosensitive recording layer comprising any of the above coloring phthalides and a color developer capable of inducing color formation in the phthalide compound are disclosed.
摘要:
Coloring phthalide compounds having general formula [I], a method of producing the phthalide compounds and a recording material comprising as a coloring component any of the coloring phthalide compounds are disclosed, ##STR1## wherein R.sup.1 and R.sup.2 each represent a straight chain or branched alkyl group having 1 to 6 carbon atoms, a cycloalkyl group, or a benzyl group, and R.sup.1 and R.sup.2 in combination may form a ring; R.sup.3 represents an alkyl group having 1 to 4 carbon atoms; R.sup.4 represents a dialkylamino group having 1 to 6 carbon atoms, a cyclic amino group or halogen, l is an integer of 0 to 4; A represents ##STR2## wherein R.sup.5 and R.sup.6 each represent a straight chain or branched alkyl group having 1 to 8 carbon atoms, a cycloalkyl group, or a benzyl group, R.sup.5 and R.sup.6 in combination may form a ring; and B is the same as A, or represents a phenyl group which may have a substituent.
摘要:
A two-color thermosensitive recording label capable of forming two different colors when heated at different temperatures is disclosed, which comprises: (a) a support material and the following layers successively formed thereon, (b) a first thermosensitive coloring layer which is colored in a first color at a predetermined high temperature T, formed on one side of the support material, (c) a decolorizing layer containing a decolorizing agent, (d) an intermediate layer, (e) a second thermosensitive coloring layer, which is colored in a second color at a predetermined low temperature, the second color being decolorized by the decolorizing agent when heated to a predetermined temperature, so that the color developed in the second thermosensitive coloring layer is prevented from being mixed with the color developed in the first thermosensitive coloring layer, and the second thermosensitive coloring layer and the second color are protected from the decolorizing layer by the intermediate layer so long as the second thermosensitive coloring layer is not heated up to the predetermined temperature, (f) a protective layer for protecting the second thermosensitive coloring layer, (g) an adhesive layer formed on the other side of the support, and (h) a disposable backing sheet which is attached to the adhesive layer.