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公开(公告)号：US4933315A
公开(公告)日：1990-06-12
申请号：US156606
申请日：1988-02-17
申请人： Jumpei Kanto , Hitoshi Saito , Nobuhisa Nishitani , Masaki Kutsukake , Tatsuya Kita , Masanori Akada , Masayuki Nakamura , Katsuhiro Kamakari
发明人： Jumpei Kanto , Hitoshi Saito , Nobuhisa Nishitani , Masaki Kutsukake , Tatsuya Kita , Masanori Akada , Masayuki Nakamura , Katsuhiro Kamakari
CPC分类号： B41M5/385 , B41M5/345 , B41M5/3854 , B41M5/39 , Y10S428/913 , Y10S428/914 , Y10T428/31551
摘要： A heat transfer sheet to be used for heat-sensitive transfer, comprising a substrate sheet and a dye layer formed on said substrate sheet, said dye layer being constituted of a layer containing a yellow dye, a cyan dye, and a magenta dye comprising a specific compound having phenylene-diamine or its derivative as the developer.
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2.发明授权Process for producing a polyvinyl acetacetal resin for use in a heat transfer sheet 失效用于生产聚乙烯乙酸乙烯酯树脂用于热转印片材的方法
公开(公告)号：US5068282A
公开(公告)日：1991-11-26
申请号：US428619
申请日：1989-10-30
申请人： Jumpei Kanto , Masanori Akada , Katsuhiro Kamakari , Kenichi Asahina , Katsuaki Sakashita , Yoshihisa Watanabe
发明人： Jumpei Kanto , Masanori Akada , Katsuhiro Kamakari , Kenichi Asahina , Katsuaki Sakashita , Yoshihisa Watanabe
CPC分类号： B41M5/395 , C08F8/48 , C08J5/18 , C09D129/14 , C09J129/14 , Y10S428/913 , Y10S428/914 , Y10T428/24802 , Y10T428/31797 , Y10T428/31942
摘要： A heat transfer sheet comprises a substrate sheet and a heat transfer layer laminated on the substrate sheet and containing a dye which can be caused to migrate by heating to be transferred onto a transferable sheet, said heat transfer sheet containing a polyvinyl acetacetal resin as a binder component, the acetal moiety of said polyvinyl acetacetal resin being 50% by weight or more based on the total amount of the resin, and 80% by weight or more of said acetal moiety comprising polyvinyl acetacetal.A process for producing a polyvinyl acetacetal resin by the reaction of a polyvinyl alcohol and acetaldehyde in an aqueous phase in the presence of 4 to 10% by weight of an acid catalyst comprises initiating precipitation of an acetalated product by maintaining the reaction system at a temperature of 8.degree. to 17.degree. C. for 30 minutes or longer, and then maintaining said reaction at a temperature of 25.degree. to 40.degree. C.
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公开(公告)号：US4902670A
公开(公告)日：1990-02-20
申请号：US132001
申请日：1987-12-11
申请人： Jumpei Kanto , Masanori Akada , Katsuhiro Kamakari , Kenichi Asahina , Katsuaki Sakashita , Yoshihisa Watanabe
发明人： Jumpei Kanto , Masanori Akada , Katsuhiro Kamakari , Kenichi Asahina , Katsuaki Sakashita , Yoshihisa Watanabe
CPC分类号： B41M5/395 , C08F8/48 , C08J5/18 , C09D129/14 , C09J129/14 , Y10S428/913 , Y10S428/914 , Y10T428/24802 , Y10T428/31797 , Y10T428/31942
摘要： A heat transfer sheet comprises a substrate sheet and a heat transfer layer laminated on the substrate sheet and containing a dye which can be caused to migrate by heating to be transferred onto a transferable sheet, said heat transfer sheet containing a polyvinyl acetacetal resin as a binder component, the acetal moiety of said polyvinyl acetacetal resin being 50% by weight or more based on the total amount of the resin, and 80% by weight or more of said acetal moiety comprising polyvinyl acetacetal.A process for producing a polyvinyl acetacetal resin by the reaction of a polyvinyl alcohol and acetaldehyde in an aqueous phase in the presence of 4 to 10% by weight of an acid catalyst comprises initiating precipitation of an acetalated product by maintaining the reaction system at a temperature of 8.degree. to 17.degree. C. for 30 minutes or longer, and then maintaining said reaction at a temperature of 25.degree. to 40.degree. C.
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