Abstract: It can be obtained a receiving sheet for a dye transfer type thermal printing which is improved in a curing speed, image reliability, recording sensitivity, and dot reproducibility, and useful for high speed and/or relative-speeds printing by arranging a polymer layer on a substrate and then a cured resin layer of a moisture-curable resin on the polymer layer.

Abstract: Thermal dye transfer printing systems which are adapted for multiple-use printing modes wherein one dye transfer sheet is repeatedly used and which comprise a dye transfer sheet having, on a substrate, a dye transfer layer containing a sublimable dye and a binder resin and a dye receiving sheet having a dye receiving layer which has a diffusion rate of the dye smaller than the dye transfer layer. This is effective in suppressing a lowering of printing density owing to the increase in number of printing cycles using one dye transfer sheet. Alternatively, the dye transfer sheet is constituted such that the dye transfer layer is made of a plurality of sub-layers in which the concentration of the dye decreases from the sub-layer formed directly on the substrate toward the surface side of the dye transfer layer. The dye is invariably supplied from the higher concentration sub-layers to ensure full color printing with a remarkably increasing number of multiple-use printing cycles.

Abstract: A teaching playback swing-phase-controlled above-knee prosthesis comprises a thigh frame, a leg frame, an air cylinder interconnecting the thigh and leg frames and provided with adjusting means for adjusting the degree of opening the valve of the air cylinder to a plurality of degrees respectively for a plurality of walking speeds selected during trial walking, a mode selecting switch having positions respectively for setting degrees of opening of the valve of the air cylinder in a teaching mode and for a playback mode in which one of the degrees of opening is selected according to an actual walking speed, an opening detector for detecting the degree of opening of the valve of the air cylinder, an opening storage device for storing a plurality of set degreess of opening of the valve of the air cylinder, a phase detector for detecing swing phases and stance phases, walking speed detector for detecting an actual walking speed, and control unit for adjusting the degree of opening of the valve of the air cylinder

Abstract: A teaching playback swing-phase-controlled above-knee prosthesis comprises a thigh frame, a leg frame an air cylinder interconnecting the thigh and leg frames and provided with adjusting means for adjusting the degree of opening the valve of the air cylinder to a plurality of degrees respectively for a plurality of walking speeds selected during trial walking, a gait selecting switch having positions respectively for setting degrees of opening of the valve of the air cylinder in a teaching mode and for playback mode in which one of the degrees of opening is selected according to an actual walking speed, an opening detector for detecting the degree of opening of the valve of the air cylinder, an opening storage device for storing a plurality of set degrees of opening of the valve of the air cylinder, a phase detector for detecting swing phases and stance phases, walking speed detector for detecting an acutal walking speed, and control unit for adjusting the degree of opening of the valve of the air cylinder in

Abstract: A dye transfer sheet consisting of a transfer substrate and a coloring material layer comprising a high concentration layer which comprises a dye and is formed on the transfer substrate and a low concentration layer which comprises a water soluble resin or water dispersible resin having a polydimethylsiloxane structure and has a lower dye concentration than the high concentration layer and is formed on the high concentration layer. A dye transfer sheet consisting of a transfer substrate and a coloring material layer comprising a high concentration layer which comprises a dye and a binder polymer cross-linked with a cross-linking agent and is formed on the transfer substrate and a low concentration layer which comprises a water soluble resin or water dispersible resin and has a lower dye concentration than the high concentration layer and is formed on the high concentration layer.

Abstract: A teaching playback swing-phase-controlled above-knee prosthesis has a thigh frame, a leg frame, an air cylinder interconnecting the thigh and leg frames and provided with adjusting means for adjusting the degree of opening the valve of the air cylinder to a plurality of degrees respectively for a plurality of walking speeds selected during trial walking. A mode selecting switch has positions respectively for setting degrees of opening of the valve of the air cylinder in a teaching mode and for a playback mode in which one of the degrees of opening is selected according to an actual walking speed. An opening detector detects the degree of opening of the valve of the air cylinder. An opening storage device for stores a plurality of set degrees of opening of the valve of the air cylinder.

Abstract: The dye transfer type thermal printing sheet of the present invention comprises(a) a substrate, and(b) a lamina comprisinga dye andeither a cured product of a moisture curing type resin or a reaction-cured product of a moisture curing type resin and a reactive silicone oil,on at least one side of the substrate.According to the present invention, a surface release property and surface lubricity can easily be imparted to the color material layer or to the surface layer. Further, since no crosslinking agent is required to cure the resin, curing at low temperature becomes possible. The dye transfer type thermal printing sheet of the present invention can provide a printing sheet useful for high speed recording and/or relative speed recording.

Abstract: The present invention provides dye transfer type thermal printing sheet comprising a base sheet, a dye-containing layer formed on the base sheet and a dye-permeable layer which is formed on the dye-containing layer and comprises at least one water dispersible polysiloxane graft polymer which is obtainable by polymerizing (B) 0.05 to 10% by weight of a polymerizable silane compound, (C) 1 to 30% by weight of an unsaturated organic acid and (D) 40 to 97.95% by weight of a monomer which is copolymerizable with the silane compound (B) and the unsaturaed organic acid (C) in the presence of (A) 1 to 20% by weight of a polysiloxane having terminal hydroxyl groups (provided that the total of the components (A), (B), (C) and (D) is 100% by weight) in an organic solvent except an alcohol or at least one salt of said graft polymer with a base, which has good storage stability, generates images with improve weather durability and prevents great decrease of print density as increase of the number of printing times.

Abstract: When a dyeable layer comprises cured product of at least one moisture-curable type resin, it can have a high image reliability, permit easy control of the printing sensitivity and serve for both low-speed printing and high-speed printing. A receiving sheet having a dyeable layer excellent in surface slipperiness which is useful for high-speed printing and/or relative-speeds printing, can be obtained when the dyeable layer comprises cured product of a moisture-curable type resin, or reaction cured product of a moisture-curable type resin with a reactive silicone oil.

Abstract: A thermal transfer printing system comprising a dye transfer sheet having a dye carrier layer containing at least one sublimable dye and a dye acceptor sheet having a dye-receiving layer with good affinity for the sublimable dye. The two sheets are arranged during printing operations in such a way that they are facing through a slippage means which is in the form of a layer of particles of lubricating or thermally releasable materials. This system is adapted for a printing process in which a relative speed of the dye transfer sheet to a thermal printing head is smaller than a relative speed of the dye acceptor sheet under which the dye transfer sheet is heated in an imagewise pattern to permit the sublimable dye to deposit on the dye-receiving layer according to the imagewise pattern. The dye transfer sheet and the dye acceptor sheet most suitable for use in the system are also described.

Abstract: A dye-receiving sheet comprising a substrate and a dye-receiving layer formed on one side of the substrate, the substrate being made of an extruded, biaxially stretched sheet of a mixture of white fine particles and a polyester resin. The extruded, stretched sheet has a specific gravity of from 1.0 to 1.38. A layer of polymer having a thermal deformation temperature or softening point lower than that of the extruded, stretched sheet may be formed on the extruded, stretched sheet. The dye-receiving sheet has high brightness and good flexibility with high printing sensitivity.

Abstract: A thermal transfer printing system comprising a dye transfer sheet having a dye carrier layer containing at least one sublimable dye and a dye acceptor sheet having a dye-receiving layer with good affinity for the sublimable dye. The two sheets are arranged during printing operations in such a way that they are facing through a slippage means which is in the form of a layer or particles of lubricating or thermally releasable materials. This system is adapted for a printing process in which a relative speed of the dye transfer sheet to a thermal printing head is smaller than a relative speed of the dye acceptor sheet under which the dye transfer sheet is heated in an imagewise pattern to permit the sublimable dye to deposit on the dye-receiving layer according to the imagewise pattern. The dye transfer sheet and the dye acceptor sheet most suitable for use in the system are also described.

Abstract: A dye-receiving sheet comprising a substrate and a dye-receiving layer formed on one side of the substrate, the substrate being made of an extruded sheet of a mixture of white fine particles and a polyester resin and a layer of a polymer material or composition whose thermal deformation temperature or softening point is lower than that of the extruded sheet. This sheet has high printing sensitivity.

Abstract: A dye-receiving sheet for thermal transfer printing which is used in combination with a dye transfer sheet and comprises a substrate and a dye-receiving layer formed on one side of the substrate. The dye-receiving layer is made of a dye-receiving resin matrix dispersing a mixture of a silane copolymer and colloidal silica particles which form strong network structures through silane coupling, and a releasing surface active agent.

Abstract: Dye-receiving sheets for heat transfer recording comprising on a substrate, a dye-receiving layer consisting essentially of a cured product of an acrylate having two acrylic or methacrylic unsaturated bonds. The sheet is used in combination with a dye transfer sheet comprising a sublimable dye, and has a high affinity for the dye and a high heat resistance without bleeding of the dye.

Abstract: In an image forming method including the steps of electrostatically adhering light-transmissive particles onto the surface of a photoconductive substrate, exposing an image on the particles, and developing the image by separating the particles through which no light is transmitted from the particles through which light is transmitted in order to obtain a particle image consisting of one of the particle groups, the step of equalizing the potentials of the particles through which light is transmitted and those of the particles through which no light is transmitted is inserted between the exposure step and the development step. This additional step eliminates the defect in the conventional method in which degradation of color purity occurs at a thick color portion.