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51. 发明专利

JPH07149056A PHOTORECORDING MATERIAL 失效
公开(公告)号：JPH07149056A
公开(公告)日：1995-06-13
申请号：JP22936394
申请日：1994-09-26
申请人： JUJO PAPER CO LTD
发明人： MINAMI TOSHIAKI , NAGAI TOMOAKI , HAMADA KAORU , SEKINE AKIO , SATAKE HISAMI , TAKANO TOSHIYUKI , HAYASAKA HIDEKI
IPC分类号： B41M5/28 , B41M5/26 , B41M5/30 , B41M5/333
摘要： PURPOSE:To provide a photorecording material which is excellent in plasticizer resistance and heat resistance of an image, and waterproof quality and moisture resistance of a base material. CONSTITUTION:A photorecording material comprises a recording layer on a base material, which layer contains a dye precursor, a developer adapted to react with the dye precursor for color development, and a light absorbent adapted to convert light into heat, which developer contains at least one compound represented by a general formula (R-NH(C=S)NH)n-Z, wherein, R represents alkyl group substituted or non-substituted, cycloalkyl group, aryl group, aralkyl group and alkenyl group, n is an integer of 22, and Z represents a group having at least divalence, with the proviso that at least either one of R and Z has at least one aromatic ring adjacent to the group -NH(C=S)NH-.

52. 发明专利

JPH0761130A THERMAL RECORDING SHEET 失效
公开(公告)号：JPH0761130A
公开(公告)日：1995-03-07
申请号：JP21385693
申请日：1993-08-30
申请人： JUJO PAPER CO LTD
发明人： MINAMI TOSHIAKI , NAGAI TOMOAKI , HAMADA KAORU , SEKINE AKIO
IPC分类号： B41M5/337 , B41M5/26
摘要： PURPOSE:To ensure the stability of an image by providing a thermal recording sheet having high sensitivity and excellent in heat resistance, water resistance and oil resistance by adding at least one kind of a dimerized thiourea compd. represented by a specific general formula to a thermal color forming layer as a stabilizer. CONSTITUTION:A thermal recording sheet is obtained by providing a thermal color forming layer containing a colorless or light colored basic leuco dye and an org. coupler on a support. In this case, at least one kind of a dimerized thiourea compd. represented by general formula (wherein R1-R8 are respectively independently a hydrogen atom, a lower alkyl group or a halogen atom, A is a substituted or non-substituted 1-18C alkyl group or an aryl group and X is S or SO2) is added to the thermal color forming layer as a stabilizer. As the stabilizer, there is 4,4'-(N,N''-diphenylcarbamoyl)aminodiphenyl sulfide or 4,4'-(N,N'-diphenylcarbamoyl)aminodiphenylsulfone.

53. 发明专利

JPH0672041A THERMAL RECORDING SHEET 失效
公开(公告)号：JPH0672041A
公开(公告)日：1994-03-15
申请号：JP22952792
申请日：1992-08-28
申请人： JUJO PAPER CO LTD
发明人： MINAMI TOSHIAKI , FUKUCHI CHUICHI
IPC分类号： B41M5/337 , B41M5/26 , B41M5/30 , B41M5/333
摘要： PURPOSE:To improve dynamic sensitivity, dot reproducibility and image preservation stability by incorporating a pigment having a predetermined oil absorption amount in an intermediate layer and organic developer formed of special compound, special stabilizer and calcium carbonate as pigment in a heat sensitive color developing layer in a thermal recording sheet for a heat pen, etc. CONSTITUTION:An intermediate layer of a thermal recording sheet having the intermediate layer and a heat sensitive color developing layer sequentially provided on a support comprises organic or inorganic pigment having an oil absorption amount of 80ml/100g based on JIS K 510 such as alumino of about 70-90wt.%. The developing layer contains organic developer formed of compound represented by a formula I such as 4-hydroxy-4'-isopropoxydiphenyl sulfone, a stabilizer such as 4-benzyloxy-4'-(2,3-epoxy-2-methylpropoxy)diphenyl sulfone, and pigment such as calcium carbonate. In the formula I, R is propyl group, isopropyl group, n-butyl group.

54. 发明专利

JPH05318927A THERMAL RECORDING SHEET 失效
公开(公告)号：JPH05318927A
公开(公告)日：1993-12-03
申请号：JP12364492
申请日：1992-05-15
申请人： JUJO PAPER CO LTD
发明人： MINAMI TOSHIAKI , OGINO NAOMI
IPC分类号： B41M5/337 , B41M5/40 , B41M5/42 , B41M5/44 , B41M5/26
摘要： PURPOSE:To provide a thermal recording sheet excellent in dynamic sensitivity, the reproducibility of a printing pixel (dot) and image quality and not generating sticking or the adhesion of refuse. CONSTITUTION:A thermal recording sheet is constituted by providing an intermediate layer containing fine particles with a particle size of 0.2-5.0mum composed of a polymer having a crosslinked structure and inorg. pigment with oil absorbancy of below 170ml/100g in a mixing ratio of 1:1-1:9 between a support and a thermal color forming layer.

55. 发明专利

JPH054455A HEAT0SENSITIVE RECORDING SHEET 失效
公开(公告)号：JPH054455A
公开(公告)日：1993-01-14
申请号：JP15649091
申请日：1991-06-27
申请人： JUJO PAPER CO LTD
发明人： MINAMI TOSHIAKI , KANEKO TOSHIO
IPC分类号： B41M5/337 , B41M5/26 , B41M5/30 , B41M5/333
摘要： PURPOSE:To provide a heat-sensitive recording sheet on which a felt pen with an aqueous fluorescent ink can be used to write in vivid color and which has an excellent writing preservation property of images at the same time. CONSTITUTION:For a heat-sensitive recording sheet for which a heat-sensitive coloring layer, of which the principal ingredients are a colorless or light-colored basic colorless dye and an organic developer, is provided, as the organic developer, 4-hydroxy-beta--naphthalenesulfonate is contained, and also a diphenyl sulfone derivative is contained.

56. 发明专利

JPH0493285A THERMAL RECORDING CARD 失效
公开(公告)号：JPH0493285A
公开(公告)日：1992-03-26
申请号：JP20913290
申请日：1990-08-09
申请人： JUJO PAPER CO LTD
发明人： MINAMI TOSHIAKI , FUKUCHI CHUICHI , KANEKO TOSHIO
IPC分类号： B41M5/28 , B41M5/26 , B41M5/30 , B41M5/323 , B41M5/337 , B41M5/42
摘要： PURPOSE:To improve optical reading properties in a near infrared region by a method wherein a substrate is a specific opaque polyester resin, a basic colorless dye is at least one of dyes forming a recording image and having absorption in a specific near infrared region, and an intermediate layer containing an oil absorbing pigment having non-absorption in a specific near infrared region is provided between the substrate and a thermal recording layer. CONSTITUTION:An opaque polyester resin of 100-500mum thickness containing 10-60wt.% calcium carbonate in a polyester resin is used as a substrate. Thereon, an intermediate layer containing an oil absorbing pigment having non-absorption in a 700-1200nm near infrared region and a near infrared light absorbing thermal recording layer containing a leuco dye having absorption in a 700-1200nm near infrared region are successively provided. It is desirable that the calcium carbonate has a particle diameter of 0.3-5mum and is contained in the amount of 10-60wt.% in the polyester resin. As the oil absorbing pigment, calcined clay, amorphous silica, and the like can be exemplified. As the near infrared light absorbing leuco dye, 2-methyl-6-p-(p-dimethylaminophenyl)aminoanilino fluorane or the like is especially desirable.

57. 发明专利

JPH0417158B2 失效
公开(公告)号：JPH0417158B2
公开(公告)日：1992-03-25
申请号：JP2573985
申请日：1985-02-13
申请人： JUJO PAPER CO LTD
发明人： SATAKE HISAMI , MINAMI TOSHIAKI , NAGAI TOMOAKI , FUJIMURA AKIO
IPC分类号： B41M5/327 , B41M5/155 , B41M5/333 , B41M5/337

58. 发明专利

JPH0371036B2 失效
公开(公告)号：JPH0371036B2
公开(公告)日：1991-11-11
申请号：JP18934384
申请日：1984-09-10
申请人： JUJO PAPER CO LTD
发明人： SATAKE HISAMI , MINAMI TOSHIAKI , FUJIMURA AKIO
IPC分类号： B41M5/333 , B41M5/32

59. 发明专利

JPH0369318B2 失效
公开(公告)号：JPH0369318B2
公开(公告)日：1991-10-31
申请号：JP26226684
申请日：1984-12-12
申请人： JUJO PAPER CO LTD
发明人： SATAKE HISAMI , KIMURA YOSHIHIDE , MINAMI TOSHIAKI , FUJIMURA AKIO
IPC分类号： B41M5/333 , B41M5/337

60. 发明专利

JPH01186376A THERMAL RECORDING MATERIAL 失效
公开(公告)号：JPH01186376A
公开(公告)日：1989-07-25
申请号：JP1045188
申请日：1988-01-20
申请人： JUJO PAPER CO LTD
发明人： KANEKO TOSHIO , MINAMI TOSHIAKI , FUKUCHI CHUICHI , FUJIMURA AKIO
IPC分类号： B41M5/30 , B41M5/32 , B41M5/327
摘要： PURPOSE:To enhance thermal response, resistance to weather, resistance to oil, and properties of optically reading a bar code, etc., in a near infrared region, by incorporating a specific fluorane leuco dye and a specific divinyl compound in a thermal color-forming layer. CONSTITUTION:A thermal color-forming layer contains a fluorane leuco dye shown by a formula (I) as a basic colorless dye and a divinyl compound shown by a formula (II). The specific divinyl compound and the specific fluorane leuco dye in use markedly efficiently absorb a light in a near infrared region when generating a hot melt reaction with a color developer. The use of the divinyl compound in combination with the fluorane leuco dye results in the occurrence of a synergistic action between them in the hot melt reaction. As a result, a chemical bonding force between the organic color developer and the divinyl compound and that between the organic color developer and the fluorane leuco dye are remarkably enhanced. In this manner, even under a long-time exposure to the environmental condition affected by light, heat, humidity, etc. a colored image is kept stable and properties of optically reading a recording image in a near infrared region are never deteriorated.

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