Abstract: An ink ribbon for thermal transfer printer comprising a foundation and a thermal transfer layer, said thermal transfer layer comprising a colored layer containing a wax-like substance as a main component of the vehicle thereof, and a thermoplastic adhesive layer having a film-forming property provided on the surface of the colored layer, said thermoplastic adhesive layer having a melt viscosity of 1.times.10.sup.4 to 5.times.10.sup.6 cP at a temperature by 40.degree. C. higher than the softening temperature of the adhesive layer, a softening temperature of 45.degree. to 90.degree. C., a solidifying temperature of 25.degree. to 65.degree. C. and a temperature difference of at least 10.degree. C. between said softening temperature and said solidifying temperature. The thermal transfer ink ribbon provides clear images not only on a smooth paper but also on a rough paper even in a high-speed printing or even on printers with different peeling conditions.

Abstract: A transfer tape for masking correction comprising a film-like foundation and a pressure-transferable masking layer containing a coloring pigment provided on the foundation, said pressure-transferable masking layer comprising a hiding layer comprising a coloring pigment and a vehicle, and a pressure-sensitive adhesive layer provided on the surface of the hiding layer, said vehicle of said hiding layer having an elongation at break of not less than 3.5.times.10.sup.2 %, said hiding layer having a porous structure with a porosity of 30 to 50% and having a tensile strength of not more than 1.7.times.10.sup.2 g/mm.sup.2. Masking operation using the transfer tape can be conducted with ease, erroneous images on a paper can be completely hidden and clear images can be formed on the masked portion.

Abstract: A multi-usable heat transfer ink ribbon comprising a foundation, and a heat transfer ink layer provided on one surface of the foundation, said heat transfer ink layer having a melt index of 4.times.10.sup.2 to 2.5.times.10.sup.3 g/10 min. at 190.degree. C. and containing a vehicle and 3.times.10 to 6.times.10% by volume of a nonthermoplastic powder dispersed in a nonagglomerative state, wherein said heat transfer ink layer is capable of being melted or softened to be transferred to a receiving medium in increments relative to the thickness direction of the ink layer upon heating by means of a heating head. The multi-usable heat transfer ink ribbon, though the whole of the ink layer is transferable by incorporating into the ink layer no nontransferable material which hinders the transfer of the ink, can give printed images having the same clearness as that of the printed image obtained by the initial printing even after the ribbon is repeatedly used multiple times for printing.

Abstract: An apparatus for cutting a used ink ribbon wound in a pancake form, comprising a ribbon holder for setting a position of the ink ribbon, and a plurality of cutting blades extending radially on one surface of a base member movable relative to the ink ribbon. When the base member is driven to the ink ribbon, the cutting blades cut the ink ribbon through a plurality of cutting planes extending radially from the axis of the ink ribbon in a pancake form.

Abstract: A heat-sensitive melt-transfer recording medium comprising a support (1) and a heat-sensitive melt-transfer ink layer (2) provided on one side thereof is disclosed. The above-mentioned heat-sensitive melt-transfer ink layer (2) comprises a colored ink layer (3) and a layer (4) which is formed on the surface of the colored ink layer (3) and which comprises a wax in the form of microcrystals as a main component, for preventing a smudge of a receiving medium is transfer recording and for obtaining a good print with a small printing energy. This recording medium is used for a heat-sensitive melt-transfer recording system using a thermal head.

Abstract: A liquid ink composition for selective printing comprising a coloring agent and a vehicle comprising a non-drying oil as a main component and a dispersing agent, wherein an iodine-containing antifungal agent having the general formula (I): ##STR1## wherein R is a lower alkyl group or a halogen atom is contained. The ink composition has an excellent fungus resistance and retains a desired ink flowability on storage. Accordingly, an ink ribbon or ink roller impregnated with the ink composition can be stored without impairing printing properties such as printing durability while being kept from getting moldy.

Abstract: A recording medium for electrothermal transfer printing comprising a base film, an adhesiveness improving layer provided on one surface of the base film, an electrically resistive layer provided on the adhesiveness improving layer, and a heat-sensitive transfer ink layer provided on the other surface of the base film, said electrically resistive layer comprising a binder comprising a polyvinyl butyral resin as a main component, an electrically conductive powder and an inorganic metallic compound type flame retardant. The content of an electrically conductive powder such as a conductive carbon in the resistive layer can be increased to reduce the electric resistance of the resistive layer and problems such as peeling of the resistive layer can be prevented, and a satisfactory flame resistance can be obtained without increasing the resistivity of the resistive layer. Thus, the electrothermal transfer printing can be conducted satisfactorily without any dangerousness.

Abstract: An indication element with a protective layer which comprises a receiving medium having an image in a desired pattern on one side thereof, said image being formed by transferring a transferable colored ink of a thermal transfer ink sheet to said receiving medium preferably by means of a thermal printer; and a laminating material laminated to the image-bearing side of said receiving medium, at least the surface layer of said receiving medium on the image-bearing side or at least the surface layer of said laminating material on the side in contact with said receiving medium being compatible with the vehicle of said transferable colored ink. The indication element has a clear image without defects caused by flowing of the image formed on the receiving medium. The production of the indication element can be automatized due to the formation of an image by means of a thermal printer.

Abstract: The invention relates to borderline formation on a multi-color ink ribbon for use on a typewriter or impact type printer.The ink-impervious borderline is formed by melting the fiber in the corresponding linear zone of the substrate fabric by irradiation with thermal radiation, specifically, an oblong laser beam, without physical contact.

Abstract: A multi-usable pressure-sensitive transfer recording medium wherein a finely porous layer comprising minute porous particles and a binder material for bonding the porous particles to each other is provided on a surface of a foundation, and a liquid ink paste substantially incompatible with the binder material is contained in said finely porous layer. The recording medium is characterized in that said foundation is a plastic film, and said foundation and said finely porous layer are bonded to each other with an adhesive layer composed of a hydroxyl group-containing vinyl chloride-vinyl acetate copolymer cross-linked with an isocyanate compound, in order to make it possible to use the recording medium many times at low temperatures.

Abstract: A heat-meltable transfer recording medium comprising a foundation and a transferable ink layer provided on the surface of the foundation, said transferable ink layer comprising a colored layer containing a coloring agent and a heat-meltable adhesive layer provided on the surface of the colored layer, said heat-meltable adhesive layer comprising at least one of a resin and a wax, each of which is solid at ordinary temperatures and softened or melted upon heating with a heating head, and said colored layer having a viscosity of not less than 8.times.10.sup.2 poises at 110.degree. C. (measurement with a rotary viscometer) or being semi-solid or solid at 110.degree. C., in order to produce an image which is fast at a normal state but is readily removed by peeling off when being heated.

Abstract: A lift-off tape capable of being used many times which comprises a foundation and an adhesive layer provided on one major surface of the foundation, said adhesive layer containing a plasticizer capable of plasticizing a polyamide resin which is a main component of the vehicle of a correctable ink. The lift-off tape can be used many times to remove erroneous typed impressions of a correctable ink which contains a polyamide resin as a main component of the vehicle thereof.

Abstract: A multiple-use pressure-sensitive transfer recording media which comprises a foundation and a finely porous resinous layer provided on the foundation, said porous layer comprising minute porous particles and a resinous binder material for bonding the porous particles to each other and containing a liquid ink paste substantially incompatible with the resinous binder material, said liquid ink paste comprising a pigment, a liquid fatty acid and an oil-soluble dye dissolved in said liquid fatty acid, and the weight ratio of said fatty acid to said dye being from 20:1 to 2:1. The recording media gives clear and sharp images without unevenness and blur for a multiplicity of strikes.

Abstract: A spool for a reversible-type correction tape assembly, in which an improved fastening means is provided between the cap and the spool shaft. The spool shaft is designed to hold a ribbon-winding core so that the winding core is slideable in an axial direction of the spool shaft but is not rotatable relative to the shaft. The cap is detachably mounted on the top portion of the spool shaft so that the winding core does not slip off of the spool shaft. The spool shaft is provided with a male thread on a peripheral portion which is an extension above the winding core when the latter is engaged on the spool shaft.

Abstract: A lift-off tape capable of being used many times which comprises a foundation and an adhesive layer provided on one major surface of the foundation, said adhesive layer containing a plasticizer capable of plasticizing a polyamide resin which is a main component of the vehicle of a correctable ink. The lift-off tape can be used many times to remove erroneous typed impressions of a correctable ink which contains a polyamide resin as a main component of the vehicle thereof.

Abstract: A multiple-use pressure-sensitive transfer recording media which comprises a foundation and a finely porous layer provided on the foundation, said porous layer comprising minute porous particles and a binder material for bonding the porous particles to each other and containing a liquid ink paste substantially incompatible with the binder material, characterized by at least one of the following features: (i) that said liquid ink paste contains as a coloring agent a pigment, and an oil-soluble dye in a state that it is dissolved in a liquid fatty acid, and said liquid ink paste has a viscosity of not less than 300 cP and less than 4,000 cP at ordinary temperature; (ii) that said binder material is a vinyl chloride-vinyl acetate copolymer comprising 4 to 7 parts by weight of vinyl chloride and 5 parts by weight of vinyl acetate; and (iii) the combination of the foregoing features (i) and (ii). The recording media gives clear and sharp images without unevenness and spots for a multiplicity of strikes.

Abstract: A multi-gradation heat sensitive transfer medium for use in multi-gradation thermal transfer for adjusting the density of a transfer print image by superimposing ink layers on a recording medium a plurality of times by thermal transfer, which comprises a foundation and ink layers provided thereon, each of said ink layers containing a color pigment having a high transparency and a high tinting strength in an amount smaller than sufficient to provide a maximal degree of reflection density, and each of said ink layers having a light transmittance of not less than about 65% in a region where the color pigment does not have any absorption band. By superimposing the ink layers of the transfer medium on a recording medium a plurality of times, there is obtained a clear print image having a multiplicity of gradations.

Abstract: A reusable heat-sensitive transfer recording element which comprises a foundation and an ink-containing layer provided on the foundation, said ink-containing layer comprising porous particles impregnated with a heat-meltable ink and a binder material for bonding the particles to each other, said binder material being substantially incompatible with the heat-meltable ink. With the present transfer elements, printed images having a high optical density can be obtained from the initial use thereof and printed images having such high optical density can be obtained at every repeated use.