Abstract: A thermal transfer recording material comprising a foundation and a heat-meltable ink layer comprising a vehicle and a pigment provided on the foundation, the vehicle comprising not less than 85% by weight of an epoxy resin, the epoxy resin comprising not less than 50% by weight of at least one of tetraphenolethane tetraglycidyl ether and a bromide thereof, cresol novolac polyglycidyl ether and a bromide thereof, and bisphenol F diglycidyl ether and a bromide thereof. The recording material has excellent transferability and gives printed images excellent heat resistance, solvent resistance and scratch resistance.

Abstract: A method is provided for forming a porous film having desired average pore diameter and pore density in a multi-printing-adaptive thermal transfer recording medium having a foundation, a heat-meltable ink layer formed on one side of the foundation and the porous film provided in the heat-meltable ink layer at a location proximate to a surface thereof, which method comprises the steps of: coating the heat-meltable ink layer with a W/O emulsion containing as an essential ingredient thereof at least one resin selected from the group consisting of cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, ethyl cellulose, nitrocellulose and ethyl hydroxyethyl cellulose; and drying the resultant coating to form a porous film.

Abstract: A thermal transfer recording material comprising a foundation and, provided thereon, a heat-meltable ink layer comprising at least an epoxy resin, a coloring agent and a particulate polytetrafluoroethylene, the epoxy resin comprising not less than 50% by weight of at least one member selected from the group consisting of tetraphenolethane tetraglycidyl ether, cresol novolac polyglycidyl ether, bisphenol A diglycidyl ether and bisphenol F diglycidyl ether, the content of the particulate polytetrafluoroethylene in the heat-meltable ink layer being from 1 to 60% by weight. The recording material exhibits satisfactory transferability and gives printed images having excellent scratch resistance.

Abstract: A multi-usable thermal transfer ink sheet including a foundation and a multi-transferable ink layer provided on the foundation, the ink layer containing a heat-meltable material and carbon black as main ingredients, the carbon black having an oil absorption of not more than 70 ml/100 g. The ink sheet enables multi-printing with ensuring a high print density.

Abstract: A thermal transfer recording material is provided comprising a foundation and, provided thereon, a heat-meltable ink layer comprising an epoxy resin, a particulate wax having an average particle diameter of 0.05 to 15 .mu.m and a pigment, the epoxy resin comprising not less than 50% by weight of at least one resin selected from the group consisting of tetraphenolethane tetraglycidyl ether, cresol novolac polyglycidyl ether, bisphenol A diglycidyl ether and bisphenol F diglycidyl ether.

Abstract: A pressure-sensitive magnetic transfer recording medium comprising a support and a pressure-sensitive transferable magnetic ink layer provided directly or indirectly on the support, the pressure-sensitive transferable magnetic ink layer comprising a particulate magnetic substance, a titanate type coupling agent having a solubility parameter of 8.8 to 10.6 (cal/cm.sup.3).sup.0.5 and a cellulose acetate butyrate resin. The magnetic transfer recording medium produces printed magnetic images which can be read with high reliability by means of MICR.

Abstract: A thermal transfer recording medium comprising a foundation, and a filling ink layer provided on the foundation, the filling ink layer being thermally transferred onto a receptor in advance of formation of a print image thereon, the filling ink layer comprising a release layer, a transfer layer having a high melt viscosity and an adhesive layer which three layers are stacked in this order on the foundation, with use of the recording medium, the surface of a receptor paper that is significantly uneven can be changed to a flat one by a single thermal transfer operation, and print images of high quality can be formed by transferring a colored ink layer onto the flat surface.

Abstract: A pressure-sensitive correction tape is provided which includes: a foundation tape; and a pressure-sensitive transfer layer for masking-correction formed on one side of the foundation tape, wherein the pressure-sensitive transfer layer comprises a masking layer containing a pigment and a vehicle and a pressure-sensitive adhesive layer formed on a surface of the masking layer; wherein the pressure-sensitive adhesive layer has a thickness of 0.8 .mu.m to 1.6 .mu.m; and wherein a thickness ratio between the pressure-sensitive adhesive layer and the masking layer is 1:14 to 1:35.

Abstract: A liquid ink composition for an impact printer, comprising a dye and an oily substance as an essential component, the dye being insoluble in the oily substance and dispersed in the oily substance. An ink ribbon for an impact printer using the liquid ink composition is also disclosed. The use of the liquid ink composition reduces wear and corrosion of the printing wires used in a wire dot printer and gives print images with no blurring.

Abstract: A film transfer apparatus includes an apparatus casing having a feed-core support shaft for detachably mounting a feed core and a take-up core support shaft for detachably mounting a take-up core. The support shafts respectively include a transmission member for causing the feed core to provide a film ribbon take-up speed higher than a ribbon feed speed of the feed core. For slippably coupling the feed core rotation and the take-up core rotation, a slip coupling mechanism is provided. This mechanism is constituted by an engaged portion of the take-up core for engagement with a mating engaging portion of the take-up core support shaft. The engaged portion is elastically deformable to a non-transmission condition with application thereto of a force exceeding a predetermined level. Further, the engaged portion is provided with a mechanical strength smaller than the engaging portion.

Abstract: A thermal transfer sheet is provided which comprises: a foundation; a recording agent layer provided on one side of the foundation; and a back layer provided on the other side of the foundation and containing a binder resin and a charge-transfer complex; wherein the charge-transfer complex comprises an electrically conductive organic polymer serving as an electron donor and an electron acceptor; and wherein the back layer has a surface resistivity of not greater than 10.sup.11 .OMEGA./cm.sup.2.

Abstract: An image receptor for a thermal transfer ink for use in a tape printer, which is used with it contained in a cassette in the tape printer, and which comprises an image receptor body (10) and a release material (15) adhered to one side of the image receptor body, and has a total thickness of 80 to 200 .mu.m, characterized in that, when the image receptor is subjected to measurement wherein, with use of a measuring device which comprises a female member (1) having a V-shaped groove (2), and a male member (3) having a V-shaped protrusion (4) capable of engaging with the V-shaped groove (2) and having a radius of rounding of 0.1 to 0.3 mm at the leading edge (5) of the V-shaped protrusion, the image receptor is held between the female member (1) and the male member (3) and a load of 30 to 2,000 g/cm.sup.2 is applied thereto for 10 seconds, a lift is not produced in the image receptor at a bending angle .beta. (which means the supplementary angle of the angle .alpha.

Abstract: A thermal transfer recording material comprising a foundation and a heat-meltable ink layer comprising a vehicle and a pigment provided on the foundation, the vehicle comprising not less than 85% by weight of an epoxy resin, the epoxy resin comprising not less than 50% by weight of at least one of tetraphenolethane tetraglycidyl ether and a bromide thereof, cresol novolac polyglycidyl ether and a bromide thereof, and bisphenol F diglycidyl ether and a bromide thereof. The recording material has excellent transferability and gives printed images excellent heat resistance, solvent resistance and scratch resistance.

Abstract: A solvent-free heat meltable solid ink is provided which ensures printed images of good fastness without any deterioration of its coating properties and which comprises a rosin-type resin in an amount of not less than 10% by weight based on the total amount of the ink, and a coloring agent comprising carbon black and an oil-soluble dye. In one embodiment of the present invention, the oil-soluble dye is a metal complex dye.

Abstract: A thermal transfer recording medium comprising a foundation and a heat-meltable ink layer provided on the foundation, the ink layer containing 50 to 80% by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate content of not more than 19% by weight, 0 to 20% by weight of a wax having a melting point of 70.degree. to 90.degree. C., 0 to 20% by weight of a resin having a glass transition point of 50.degree. to 140.degree. C., and 20 to 50% by weight of a coloring agent, provided that at least one of the wax having a melting point of 70.degree. to 90.degree. C. and the resin having a glass transition point of 50.degree. to 140.degree. C. is necessarily contained, the vehicle in the ink layer having a softening point of 60.degree. to 85.degree. C., a melt viscosity at 100.degree. C. of not lower than 1,000 poises and a melt viscosity at 160.degree. C.

Abstract: A thermal transfer sheet is provided which includes: a base film; and a filling ink layer formed side by side on one side of the base film; the filling ink layer containing an n-paraffin wax in an amount of not less than 10% by weight and an isoparaffin wax in an mount of 20% to 80% by weight of the total amount of the n-paraffin wax and the isoparaffin wax.

Abstract: A thermal transfer recording medium comprising a foundation, and a release layer and a heat-meltable colored ink layer provided on the foundation in that order, the release layer containing 50 to 100% by weight of a polyethylene wax having a melting or softening point of not lower than 100.degree. C., the heat-meltable colored ink layer comprising a coloring agent and a vehicle, the vehicle containing 50 to 100% by weight of carnauba wax. The recording medium gives clear print images having excellent fastness without causing falling of ink and is useful for bar code printing.

Abstract: A thermal transfer medium is disclosed which is useful in a method for forming a color image by selectively melt-transferring at least two of a yellow heat-meltable ink layer, a magenta heat-meltable ink layer and a cyan heat-meltable ink layer onto a receptor having a microporous surface layer. The thermal transfer medium includes a foundation having thereon a yellow heat-meltable ink layer, a magenta heat-meltable ink layer and a cyan heat-meltable ink layer, a non-transferable undercoat layer being provided between the foundation and the respective ink layers, each of the ink layers comprising a coloring agent and a vehicle comprising a wax as a major ingredient, each of the ink layers having a melt viscosity of 20 to 200 cps/90 .degree. C., the undercoat layer comprising a resin exhibiting a strong adhesion to a wax. The thermal transfer medium gives highly fine color images excellent in gradation quality and color reproducibility on the basis of subtractive color mixture of yellow, magenta and cyan.

Abstract: A thermal transfer material is disclosed which is useful in a method for forming a color image comprising selectively melt-transferring at least one of a yellow heat-meltable ink layer, a magenta heat-meltable ink layer and a cyan heat-meltable ink layer onto a receptor having a multiplicity of micropores in the surface layer thereof to enter each ink in a molten state into the micropores, thereby forming a color image comprising at least one of (A) at least one color region of single color of yellow, magenta and cyan, and (B) at least one color region developed on the basis of subtractive color mixture of at least two of yellow, magenta and cyan. The thermal transfer material comprises at least one of a yellow heat-meltable ink layer, a magenta heat-meltable ink layer and a cyan heat-meltable ink layer provided on a foundation or foundations, each ink layer having a melt viscosity of 20 to 200 cps/90.degree. C. and a coating amount of 0.5 to 2.5 g/m.sup.2, the foundation having a thickness of 1.0 to 4.5 .mu.

Abstract: A thermal transfer recording medium comprising a foundation, a heat-meltable release layer provided on the foundation, and a heat-meltable colored ink layer provided on the release layer, the heat-meltable release layer comprising wax particles having an average particle size of 1 to 6 .mu.m, the coating amount of the particles being from 0.3 to 2.5 g/m.sup.2, the average particle size R (.mu.m) and the coating amount M (g/m.sup.2) of the particles satisfying the relationship represented by formula (I):0.28R.ltoreq.M.ltoreq.0.83R (I)The specific release layer provides a great adhesion force of the ink layer to the foundation when not being heated and a good releasability of the ink layer from the foundation when the ink ribbon is peeled from the receptor paper when printing.