Abstract: Defective portions, such as black dot defects, in an emulsion layer of an emulsion mask such as a photomask are repaired or removed by irradiating an ultraviolet laser beam from a laser oscillator, preferably an excimer laser. The laser beam is passed through an adjustable aperture for shaping and is then projected onto defective portions in dimensional alignment, whereby the defective portions are destroyed. In order to ensure that only the defective portions are destroyed, the image of the aperture projected on the emulsion layer is observed so as not to cover the emulsion mask where defective portions do not exist. Defective portions such as white defects can also be repaired by using additional procedure together with the irradiation of the laser beam.

Abstract: The heat transfer sheet according to this invention including a substrate sheet and a dye carrier layer formed on one side of the substrate sheet and includes a dye and a binder. The dye contained in the dye carrier layer includes a compound having two chromophores linked together through a divalent linking group, and is improved in terms of both color density and storability, thus producing excellent effects.

Abstract: The heat transfer sheet (10) of the present invention has an image-receiving layer (3) comprising a dye dyeable resin together with a dye layer (2) peelably formed on the surface of a substrate sheet (1), and therefore can form an image of high quality by the heat transfer system without restriction as to the kind of non-transfer material or the surface state.

Abstract: The present invention relates to a thermosensitive recording material used in combination with a heat transfer sheet carried thereon with a thermally transferable dye, which is characterized in that it comprises a substrate 1 and a dye-receiving layer 2 provided on at least one surface of the substrate 1, the dye-receiving layer 2 being obtained by crosslinking and curing a resin having a crosslinkable reaction group with an additive having a crosslinkable reaction group.

Abstract: A decorative sheet having a first substrate sheet 11 formed of a transparent plastic material, in one or both of the surfaces of which all or a part of a pattern-printed layer 2 is embedded, a laminated sheet formed by laminating a second substrate sheet 12 formed of a transparent plastic material on one surface of the abovementioned sheet, or a laminated sheet formed by laminating a third substrate sheet, 13 formed of a plastic material having a concealing effect on the above-mentioned sheet or laminated sheet. This decorative sheet has an excellent three-dimensional effect.

Abstract: The image receiving sheet according to the present invention is an image receiving sheet which receives dye migrated by heat from a heat transfer sheet, wherein the image receiving sheet includes a substrate (3), a dye receiving layer (3) provided on one surface of the substrate and a curl prevention layer. The curl prevention layer includes a non-heat stretchable and shrinkable resin having a heating stretching or shrinking ratio within the range from -1.0 to 1.5% in JIS-K-6734 provided on the surface of the substrate on the side opposite to the above dye receiving layer, or between the substrate and the dye receiving layer. In the present invention, by having such a curl prevention layer as mentioned above, generation of curl by heat during image formation can be prevented to provide an image receiving sheet excellent in both conveyability of sheet and printing quality.

Abstract: The DRAW type optical recording medium which can record optical information by forming information pits in the recording layer by irradiation of an energy beam such as laser beam, and yet can reproduce the information immediately after writing without requiring any step of developing processing after writing of information. The optical recording medium includes a recording layer (3) for forming information pits through the occurrence of physical deformation by irradiation of an energy beam and a sensitizing layer (4) for augmenting the physical deformation in the recording layer (3) laminated on a support (2). By the presence of the sensitizing layer, recording sensitivity is improved and also stability of the medium with lapse of time becomes excellent.

Abstract: A heat transfer image-receiving sheet including a substrate sheet and a dye-receiving layer formed on at least one surface of the substrate sheet, whereinthe dye-receiving layer includes at least two microscopically separated phase regions of resins differing in dyeability, and wherein the phase regions include a dispersion phase of a lipophilic resin and a dispersion medium phase of a hydrophilic resin.

Abstract: A heat transfer sheet having a dye layer including a dye and binder, provided on a substrate film, said dye layer contains a compound represented by the following formula (I):R=[(CH.sub.2).sub.1 --X--(CH.sub.2).sub.m --CH.sub.3 ].sub.2 (I)wherein R is a phenylene group or a napthylene group or an alkylene group which may also have substituent; X is a linking group such as --NHCOO-- group, --NHCONH-- group, --COO-- group, --CONH group, --NHCO group, --NHSO.sub.2 -- group, --OOC-- groups, --OOCNH group, --O.O.sub.2 S group-, --SO.sub.2 NH-- group, --SO.sub.2.O group, --O-- group, --NH-- group, --S-- group; and l and m are integers of 1 to 30.

Abstract: An image-receiving sheet comprising a base sheet and a receiving layer, provided on one surface of said base sheet, for receiving a dye or a pigment migrating from a heat transfer sheet, said base sheet comprising one or two or more layers, at least one layer of said base sheet having a porous structure or a foamed structure.

Abstract: An image-receiving sheet comprising a base sheet and a receiving layer, provided on one surface of said base sheet, for receiving a dye or a pigment migrating from a heat transfer sheet, said base sheet comprising one or two or more layers, at least one layer of said base sheet having a porous structure or a foamed structure.

Abstract: A cartridge case for encasing therein a recording medium disc. The cartridge case includes a shutter which is slidably mounted thereon for opening/closing at least one head insertion hole formed in the cartridge case, a guide portion formed in the front edge of the cartridge case in an insertion direction toward a recording and reproducing apparatus, a slider slidingly engaged with the guide portion for supporting the shutters and a return coil spring for biasing the shutter through the slider to a position where the shutter closes the head insertion hole. The spring includes an elastic wire coiled portion and two arms which extend therefrom. One of the arms includes a first extension portion extending substantially along a circumferential periphery of the disc from the coiled portion and a second extension portion bent from the first extension portion along a front wall in the insertion direction of the recording and reproducing apparatus.

Abstract: A thermal transfer sheet comprising a substratte film, a transferable ink layer formed on one surface side of the substrate film, and a back coating layer formed on the other surface side of the substrate film to be in contact with a thermal head, wherein the transferable ink layer comprises a heat-fusible ink capable of being melted under heating, and the back coating layer comprises a binder predominantly comprising polyparabanic acid.

Abstract: A heat transfer sheet according to the present invention includes a substrate sheet and a dye carrying layer formed on its one major side, and is characterized in that a dye included in the dye carrying layer is expressed by the following general formula (I) or (II): ##STR1## An image formed with such a heat transfer sheet shows excellent fastness properties, and excels in resistance to contamination in particular.

Abstract: An image-receiving for use in combination with a heat transfer sheet has a substrate, an image-receiving layer provided thereon, and optionally a layer of a mold releasing agent provided on at least a part of the image-receiving layer. This image-receiving sheet exhibits good mold releasability and also provides a colored image having a high density, resolving power and continuous gradation.

Abstract: A pictorial image comprising pixels represented by a combination of density values in respect to first color components (R, G, B) is transformed to a pictorial image comprising pixels represented by combination of density values in respect to second color components (C, M, Y). In accordance with the first color modification method, an operation expressed as Q=.alpha.P+.beta. is implemented to an original density value P using two correction coefficients .alpha. and .beta. determined in advance to determine a density value Q after transformation. In addition, in accordance with the second color modification method, density values after transformation are determined by the calculation of the k-th degree masking equation using the k-th degree masking coefficients. At this time, a color cube is defined with respect to the first color components. The color cube thus defined is devided into an n number of blocks. The k-th degree masking coefficients are defined every respective blocks.

Abstract: A thermal transfer printing is carried out in a printer. A cassette case housing a thermal transfer printing film is inserted into the printer and set in position. The cassette case has an outer surface provided with a plurality of marking positions to one of which a reflective mark is applied to indicate the usage and/or ink characteristics of the printing film in the cassette case. For printing, printing sheets are fed into the printer. Each sheet has a sheet mark indicating the usage and/or ink characteristics adapted to it. The reflective mark and the sheet mark are detected in the printer, and only when it is determined that the detected marks are of the same usage and/or of the same ink characteristics, the printer is allowed to operate.

Abstract: An image-receiving sheet comprising a base sheet and a receiving layer, provided on one surface of said base sheet, for receiving a dye or a pigment migrating from a heat transfer sheet, said base sheet comprising one or two or more layers, at least one layer of said base sheet having a porous structure or a foamed structure.

Abstract: A method for producing a thick film type of non-fogging sheets having a thickness of 30 .mu.m or more comprises the steps of: preparing a solvent-free composition comprising (a) a polymer, (b) a hydrophilic monomer and (c) a surface active agent and having a viscosity of 50,000 cP or less, applying this composition as a coating on the surface of a backing film without recourse to any solvent, and crosslinking the thus coated composition by exposure thereof to ionizing radiation, thereby forming a hydrophilic film having a thickness of 30 .mu.m or more.

Abstract: The reading timing determination unit determines a timing at which identification marks such as print bar codes should be read. The reading unit reads identification marks in accordance with the timing to provide identification mark data in a numerical form. The discrimination unit compares identification mark data with data value of an identification mark to be primarily printed to judge whether or not the identification mark is correctly printed. The signal generation unit produces a notifying signal when it is judged that the identification mark is not correctly printed. In this way, this apparatus tests whether or not identification marks successively printed on a moving body in the form of sheet by the printing machine are correctly printed.