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31. 发明专利

JPH05338360A 失效
公开(公告)号：JPH05338360A
公开(公告)日：1993-12-21
申请号：JP14548092
申请日：1992-06-05
申请人： TOSHIBA CORP
发明人： SATO NORIAKI , OKUYAMA TETSUO , TAKAYAMA AKIRA , NAKAMURA NANAO
IPC分类号： B41J31/00 , B41M5/30 , B41M5/392
摘要： PURPOSE:To provide a thermal transfer recording medium suitable for multitime printing and n-time speed type printing adapted to high speed printing, satisfying both of printing quality an image density, generating no printing contamination and having stable transfer properties and printing running properties even at high temp. CONSTITUTION:A thermal transfer recording medium is obtained by providing a hotmelt ink layer containing at least a low m.p. crystalline material, a resin material and a colorant on a sheet like base material. In the hot-melt ink layer, when the intensity of the diffraction peak from the crystalline material due to the X-ray diffraction measurement is set to I and the halo intensity of an amorphous part is set to I0, the intensity ratio I/I0 is below 1.0. Further, the hot-melt ink layer is characterized by that the endothermic peak thereof due to DSC (differential scanning calorimeter) measurement is present in the temp. region of + or -30 deg.C centering around the m.p. thereof.

32. 发明专利

JPH05155139A THERMAL TRANSFER RECORDING MEDIUM AND INK RIBBON CASSETTE 失效
公开(公告)号：JPH05155139A
公开(公告)日：1993-06-22
申请号：JP14774792
申请日：1992-06-08
申请人： TOSHIBA CORP
发明人： OKUYAMA TETSUO , NAKAMURA NANAO , TAKAYAMA AKIRA , SATO NORIAKI , NAKAMURA TADAYUKI
IPC分类号： B41M5/392 , B41M5/30
摘要： PURPOSE:To obtain a thermal transfer recording medium having excellent printing quality in printing at high speed by forming a heat-fusing ink layer containing a colorant and a heat-fusing material having specific melting point, complex elastic modulus and pour point onto a sheet-shaped base material. CONSTITUTION:A solvent dispersion containing each fixed quantity of a colorant, an ethylene group low-melting point crystal material and an ethylene resin material is prepared. A heat-fusing ink layer is formed onto a sheet-shaped base material such as a polyethylene terephthalate film from a fixed quantity of the solvent dispersion, and a thermal transfer recording medium is supported. The ethylene group low melting-point crystal material and the ethylene resin material must have the melting point of 70-90 deg.C, the magnitude of complex elastic modulus at 100 deg.C of 10 Pa-10 Pa and the pour point of 150 deg.C or higher. Carbon black, first yellow G, into first orange, irgazin red, etc., are sited as examples of the colorant constituting the heat-fusing ink layer.

33. 发明专利

JPH0435987A THERMAL TRANSFER RECORDING MATERIAL 失效
公开(公告)号：JPH0435987A
公开(公告)日：1992-02-06
申请号：JP13999090
申请日：1990-05-31
申请人： TOSHIBA CORP
发明人： SATO NORIAKI , OKUYAMA TETSUO
IPC分类号： B41M5/382 , B41M5/40 , B41M5/42
摘要： PURPOSE:To enhance the quality of recording and printing and printing durability after transfer and to perform high speed printing by providing a hot melt colorant layer and a hot melt layer in a multilayer structure of two or more layers and dispersing minute particles on the surface of the hot melt colorant layer so as to embed the same in the layer at the time of transfer. CONSTITUTION:A hot melt layer 4 is formed to the surface of a base material 2 and a hot melt colorant layer 6 containing minute particles 5 having a mean particle size of 2 - 8 mum is further formed to the surface thereof. When the hot melt layer and the hot melt colorant layer are melted by the heat energy applied from a thermal head to be transferred to a transfer material, the hot melt colorant layer containing a coloring material is formed to a recording printing surface as an undercoat layer and the hot melt layer is formed thereon as an overcoat layer. Therefore, the printing durability of recording and printing is enhanced and this thermal transfer recording material can correspond to high speed printing. Since minute particles are dispersed in the surface layer, the surface hardness and coefficient of friction of the hot melt colorant layer and the hot melt layer are increased.

34. 发明专利

JPH03251495A THERMAL TRANSFER RECORDING MEDIUM AND INK RIBBON CASSETTE USING THE SAME 失效
公开(公告)号：JPH03251495A
公开(公告)日：1991-11-08
申请号：JP4973790
申请日：1990-03-01
申请人： TOSHIBA CORP , GEN CORP
发明人： OKUYAMA TETSUO , SATO NORIAKI , KOKUNI NAOYUKI , KAMIYAMA SEIJI , OYAMA HIROYASU
IPC分类号： B41J31/00 , B41M5/30 , B41M5/392
摘要： PURPOSE:To form a good transfer image even to plain paper low in surface smoothness without bringing about the lowering of resolving power by specifying the complex modulus at the time of melting of the forming material of a heat- meltable colorant layer selectively heated and melted to be transferred to a material to be transferred. CONSTITUTION:In a thermal transfer recording medium, the forming material of the heat-meltable colorant layer provided on a sheet like base material is characterized by that the magnitude of the complex modulus at the time of melting (m.p. ; 30 deg.C or higher) is within the range of 5 X 10 - 9X10 Pa and the ratio of the dynamic modulus and loss modulus of the complex modulus is within the range of 1 : 2 - 1 : 4. Further, the time required when the magnitude of the complex modulus of the forming material of the heat-meltable colorant layer changes from 1X10 Pa to 1X10 Pa when temp. is raised at speed of 0.5 deg.C/min is within 20 min.

35. 发明专利

JPH03121891A THERMAL TRANSFER RECORDING MATERIAL 失效
公开(公告)号：JPH03121891A
公开(公告)日：1991-05-23
申请号：JP26101289
申请日：1989-10-05
申请人： TOSHIBA CORP
发明人： OKUYAMA TETSUO , SATO NORIAKI , TAMURA SAKAE
IPC分类号： B41M5/382 , B41M5/30 , B41M5/392 , B41M5/40 , B41M5/42
摘要： PURPOSE:To form a good transfer image even to plain paper low in surface smoothness by dispersing thermoplastic resin particles having a specific mean particle size in a heat-meltable colorant layer to provide the surface roughened by said particles. CONSTITUTION:A back coat layer 3 for imparting heat-resistant lubricity is formed to the rear of a sheetlike base material 2. A heat-meltable colorant layer 5 containing particles 4 with a mean particle size of 5-10mum composed of a thermoplastic resin is formed on the surface of the base material 2. Protruding parts are formed on the surface of the heat-meltable colorant layer 5 by the particles 4 to roughen the surface of the layer 5. Therefore, since only the heat-meltable colorant layer 5 at the part heated by a thermal head is sufficiently heated at the time of transfer, good transfer is performed even to a transfer target inferior to surface smoothness such as plain paper. Since the periphery of a part to be heated is hardly heated, faithful recording can be performed.

36. 发明专利

JPH02231192A THERMAL TRANSFER SHEET 失效
公开(公告)号：JPH02231192A
公开(公告)日：1990-09-13
申请号：JP5170889
申请日：1989-03-03
申请人： TOSHIBA CORP
发明人： TAMURA SAKAE , OKUYAMA TETSUO
IPC分类号： B41M5/382 , B41M5/50 , B41M5/52
摘要： PURPOSE:To prevent the adhesion of dust, the occurrence of faulty pixel, and the deterioration of image quality with time by determining the surface resistance of an accepting layer to be less than a specific value, and the surface resistance of the surface of a base sheet at least on the opposite side to that provided with the accepting layer to be less than a specific value. CONSTITUTION:The surface resistance of an accepting layer 2 is determined to be 10 OMEGA/ unit area or less. The surface resistance of the surface of a base sheet 1 at least on the opposite side of the accepting layer 2 is determined to be 10 OMEGA/ unit area or less. The surface resistance values of the both surfaces of the thermal transfer sheet are reduced. In this manner, the thermal transfer sheet can be inhibited from being electrostatically charged. Therefore, charges that are generated are easily discharged, a charge life on the thermal transfer sheet can be shortened, and the deterioration of image quality caused by the adhesion of dust attendant on electrification or the adhesion of suspended dust in the air after recording can be suppressed.

37. 发明专利

JPS63102985A THERMAL TRANSFER RECORDING MATERIAL 失效
公开(公告)号：JPS63102985A
公开(公告)日：1988-05-07
申请号：JP24786286
申请日：1986-10-17
申请人： TOSHIBA CORP
发明人： OKUYAMA TETSUO , TAMURA SAKAE , UEHARA TSUTOMU
IPC分类号： B41M5/395 , B41M5/26
摘要： PURPOSE:To facilitate the control of gradation, by providing a layer, which consists of a specific methacrylate copolymer, a substance melted at predetermined thermal transfer temp. and a colorant, on a sheetlike base material. CONSTITUTION:A copolymer of alkyl acrylate having a 12 or more C alkyl group in the side chain thereof or alkyl methacrylate having a 14 or more C alkyl group in the side chain thereof and a monomer having a polar group, an org. substance melted at predetermined thermal transfer temp. and a colorant are dissolved in a solvent such as toluene or alcohol to prepare a coating solution. This coating solution is applied to a sheet like base material such as a polyester film and dried to form a thermal transfer recording material having a film with a thickness of about 2-10mum.

38. 发明专利

JPS62290582A HEATSENSITIVE TRANSFER RECORDING MATERIAL 失效
公开(公告)号：JPS62290582A
公开(公告)日：1987-12-17
申请号：JP13452486
申请日：1986-06-10
申请人： TOSHIBA CORP
发明人： OKUYAMA TETSUO , TOMURA SHINYA , TAMURA SAKAE , UEHARA TSUTOMU
IPC分类号： B41J31/00 , B41M5/392 , B41M5/40 , B41M5/42 , B41M5/44
摘要： PURPOSE: To facilitate the control of gradient and to improve the sensibility, the mechanical character and the productionability, by forming a first resin fusable under a specific heat transfer temperature, a second resin which does not fuse nor compatible substantially with the first resin and a layer composed of a compound with a coloring agent onto a basic material sheet. CONSTITUTION:The phase condition of a recording material is changed by means of a heatsensitive head so as to move a material onto a substance to be transferred thus performing the recording. A first resin fusable under a heat transfer temperature, a second resin not fusable under the heat transfer temperature or compatible substantially with the first resin under the transfer temperature and a layer composed of a compound with a coloring agent are formed onto a basic material sheet in a heat-sensitive transfer recording material. The first resin includes a paraffin wax, a carnauba wax, etc. while the second resin includes an ester methacrylate such as methyl acrylate, ethyl acrylate, etc. and a copolymer thereof. The mixing quantity of the first resin in the compound is set to 5 80wt.% in order to achieve a good insular dispersion.

39. 发明专利

JPS62223765A DEVELOPING METHOD 失效
公开(公告)号：JPS62223765A
公开(公告)日：1987-10-01
申请号：JP6751286
申请日：1986-03-26
申请人： TOSHIBA CORP
发明人： TOMURA SHINYA , OKUYAMA TETSUO , SAITOU MITSUNAGA , UEHARA TSUTOMU
IPC分类号： G03G9/08 , G03G9/097 , G03G13/08
摘要： PURPOSE:To stabilize the extent of triboelectric charging and to prevent development fog and the scattering of a toner on the periphery of the edge of a latent image by developing the latent image with a specified positively chargeable nonmagnetic one-component toner. CONSTITUTION:An electrostatic latent image is developed with a positively chargeable nonmagnetic one-component toner contg. a resin having >=50 deg.C glass transition point and 110-160 deg.C softening point, e.g., polystyrene and a colorant such as carbon black. The amount of electric charges produced on the resin by triboelectric charging is +25-150muC/m surface area. When the glass transition point of the resin is 160 deg.C, the toner is not fixed. When the amount of electric charge produced on the resin by triboelectric charging is , it is difficult to positively charge the toner. In case of >+150muC/m , it is difficult to form an image. Colloidal silica may be added to the toner so as to improve the flowability and coagulation resistance.

40. 发明专利

JPS623258A TONER AND DEVELOPING METHOD USING IT 失效
公开(公告)号：JPS623258A
公开(公告)日：1987-01-09
申请号：JP14156285
申请日：1985-06-29
申请人： TOSHIBA CORP
发明人： OKUYAMA TETSUO , TOMURA SHINYA , UEHARA TSUTOMU
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09 , G03G9/097 , G03G13/08 , G03G15/08
摘要： PURPOSE:To visualize an electrostatic latent image to form a high-quality image by suing a one-component type nonmagnetic toner composed of a resin having a group containing halogen or N atom on the terminal of the resin chain, and a pigment. CONSTITUTION:The one-component type nonmagnetic toner composed of a resin having a group containing halogen or N atom on the terminal of the resin chain, and a pigment is used, and the resin is obtained by using a compound having a halogen or N atom at a chain transfer agent, and an N- containing compound as a polymerization initiator, and another N-containing compound as a chain transfer agent and a polymerization initiator, and combining these processes, thus permitting the obtained toner to be sufficiently stable even under conditions of high temperature and high humidity, and low temperature and low humidity, and a high-quality image to be obtained by development.

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