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公开(公告)号：US3918974A
公开(公告)日：1975-11-11
申请号：US39666773
申请日：1973-09-13
Applicant: MITA INDUSTRIAL CO LTD
Inventor： NIHYAKUMEN KOUZI , KOUCHI TOSHIHIRO , YOKOYAMA TAIZO , UEDA YASUO , KAMEZAWA YASUTOKI , AIZAWA TATSUO
CPC classification number: G03C1/60
Abstract: A process for the diazo-type multicolor reproduction according to which it is possible to obtain multi-colored copies in which portions corresponding to predetermined portions of an original are colored selectively in different hues without substantial mingling of colors, by conducting the heat transfer at relatively low temperatures (for instance, at 60*-80*C.), and a color former to be used in such process, which comprises a thermosublimative coupler and a thermosublimative, organic, solid transfer promotor having no coupling property in itself.
Abstract translation: 一种用于重氮型多色再现的方法，根据该方法，可以获得多色复印件，其中对应于原稿的预定部分的部分以不同的色调选择性地着色，而没有大量的颜色混合，通过相对地进行热传递 低温（例如在60℃-80℃），以及在该方法中使用的成色剂，其包含本身不具有偶联性质的热分解偶联剂和热释放有机固体转移促进剂。
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2.发明授权Waxy crayon or ink-like diazotype developer composition comprising heat transferrable azo coupler and transfer promotor 失效蜡状蜡笔或油墨状二重显影剂组合物，其包含可转移偶氮偶联剂和转移启动子
公开(公告)号：US3907567A
公开(公告)日：1975-09-23
申请号：US43413974
申请日：1974-01-17
Applicant: MITA INDUSTRIAL CO LTD
Inventor： NIHYAKUMEN KOUZI , KOUCHI TOSHIHIRO , YOKOYAMA TAIZO , UEDA YASUO , KAMEZAWA YASUTOKI , AIZAWA TATSUO
Abstract: A process for diazo-type multicolor reproduction according to which it is possible to obtain multi-colored copies in which portions corresponding to predetermined portions of an original area colored selectively in different hues without substantial mingling of colors, by conducting the heat transfer at relatively low temperatures (for instance, at 60* - 80*C.), and a color former to be used in such process, which comprises a thermosublimative coupler and a thermosublimative, organic, solid transfer promotor having no coupling property in itself.
Abstract translation: 一种用于重氮型多色再现的方法，根据该方法，可以获得多色复印件，其中对应于原始区域的预定部分的部分以不同的色调选择性地着色，而没有大量的颜色混合，通过相对低的传热 温度（例如在60-80℃）和在这种方法中使用的成色剂，其包含本身不具有偶联性质的热分解偶联剂和热释放的有机固体转移促进剂。
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公开(公告)号：CA1118483A
公开(公告)日：1982-02-16
申请号：CA303431
申请日：1978-05-16
Applicant: MITA INDUSTRIAL CO LTD
Inventor： NISHIBAYASHI KATSUMI , AMAGAI YOSHIMI , HIKAKE NORIO , KOUCHI TOSHIHIRO , AIZAWA TATSUO
Abstract: A developer for electrostatic images comprising a binder medium and a pigment dispersed in the binder medium is disclosed. This binder medium comprises (A) a thermoplastic or rubbery polymer containing a member selected from the group consisting of a halogen atom and a nitrile group at a concentration of at least 100 milliequivalents per 100 g of the polymer and (B) a binder having a melting temperature lower than that Or the polymer (A) at an (A)/(B) mixing weight ratio of from 1/20 to 1/1, The halogen- or nitrile-containing polymer (A) is present in the form of fine particles dispersed in the continuous phase of the binder (B). This developer has good flowability and charge characteristics at the developing step and shows an excellent offset-preventing effect at the fixing step.
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公开(公告)号：CA1142787A
公开(公告)日：1983-03-15
申请号：CA323263
申请日：1979-03-09
Applicant: MITA INDUSTRIAL CO LTD
Inventor： KOUCHI TOSHIHIRO , AIZAWA TATSUO
Abstract: 323,263 S P E C I F I C A T I O N To All Whom It May Concern: BE IT KNOWN THAT we, Toshihiro Kouchi and Tatsuo Aizawa, residing at 1-18-208, 3-Chome, Kohoku, Hirakatashi, Osaka-fu, Japan and 6-34, Kuwazu-cho, Higashi Sumiyoshi-ku, Osaka-shi, Osaka-fu, Japan,respectively, have invented certain new and useful improvements in: "DEVELOPER FOR ELECTROPHOTOGRAPHY AND PROCESS FOR PREPARATION THEREOF". of which the following is a specification. A particulate composite developer for electrophotography is disclosed, which has a novel dispersion structure comprising a continuous phase consisting of a homogeneous mixture of a resin and a pigment and a dispersed phase consisting of spherical particles of a soft parting or fixing material having an emulsion grade size and being dispersed in the continuous phase This particulate developer has in combination improved adaptability to the developing operation, excellent transferring and cleaning properties, good ability to form a sharp image free of fog and good fixing property not causing an offset phenomenon.
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公开(公告)号：AU3854778A
公开(公告)日：1980-02-07
申请号：AU3854778
申请日：1978-08-02
Applicant: MITA INDUSTRIAL CO LTD
Inventor： KOUCHI TOSHIHIRO , TAKAYAMA HIROSHI , AIZAWA TATSUO
Abstract: In a one-component type developer for electrophotography consisting essentially of a dry blend of fixing magneto-sensitive particles and flowability- and electric resistance-controlling fine particles, when an aromatic vinyl resin and/or an acrylic resin is used an a binder resin for the magneto-sensitive particles in combination with a low molecular weight olefin resin, the magneto-sensitive particles are much improved in the property of holding the flowability- and electric resistance-controlling fine particles on the surfaces thereof. Accordingly, these fine particles cannot be substantially separated from the magneto-sensitive particles under agitation conditions, development conditions and fixing conditions. As a result, contamination of the interior of a copying machine, especially an optical system, can be completely prevented, and also contamination of the background can be completely prevented. Further, the resulting fixed images have a very high resistance to friction and abrasion, and troubles such as blurring and flow of the image are not caused at all.
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Patent Agency Ranking
公开(公告)号：DE2815093A1
公开(公告)日：1978-10-19
申请号：DE2815093
申请日：1978-04-07
Applicant: MITA INDUSTRIAL CO LTD
Inventor： NISHIBAYASHI KATSUMI , AMAGAI YOSHIMI , HIKAKE NORIO , KOUCHI TOSHIHIRO , AIZAWA TATSUO
Abstract: A developer for electrostatic images consisting essentially of particles comprising a pigment, a binder and an offset-preventing agent selected from the group consisting of aliphatic fluorocarbon compounds and fluorochlorocarbon compounds is disclosed. When this developer is used, a high offset-preventing effect can be attained at the fixing step even if the amount incorporated of the offset-preventing agent is small, and further, the developing operation can be performed in good conditions. By incorporation of this offset-preventing agent, the flowability of particles of the developer and charge characteristics of the developer can be remarkably improved.
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公开(公告)号：DE2909357A1
公开(公告)日：1979-09-20
申请号：DE2909357
申请日：1979-03-09
Applicant: MITA INDUSTRIAL CO LTD
Inventor： KOUCHI TOSHIHIRO , AIZAWA TATSUO
Abstract: A particulate composite developer for electrophotography is disclosed, which has a novel dispersion structure comprising a continuous phase consisting of a homogeneous mixture of a resin and a pigment and a dispersed phase consisting of spherical particles of a soft parting or fixing material having an emulsion grade size and being dispersed in the continuous phase. This particulate developer has in combination improved adaptability to the developing operation, excellent transferring and cleaning properties, good ability to form a sharp image free of fog and good fixing property not causing an offset phenomenon.
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公开(公告)号：DE2834309A1
公开(公告)日：1979-02-15
申请号：DE2834309
申请日：1978-08-04
Applicant: MITA INDUSTRIAL CO LTD
Inventor： KOUCHI TOSHIHIRO , AIZAWA TATSUO , TAKAYAMA HIROSHI
Abstract: In a one-component type developer for electrophotography consisting essentially of a dry blend of fixing magneto-sensitive particles and flowability- and electric resistance-controlling fine particles, when an aromatic vinyl resin and/or an acrylic resin is used an a binder resin for the magneto-sensitive particles in combination with a low molecular weight olefin resin, the magneto-sensitive particles are much improved in the property of holding the flowability- and electric resistance-controlling fine particles on the surfaces thereof. Accordingly, these fine particles cannot be substantially separated from the magneto-sensitive particles under agitation conditions, development conditions and fixing conditions. As a result, contamination of the interior of a copying machine, especially an optical system, can be completely prevented, and also contamination of the background can be completely prevented. Further, the resulting fixed images have a very high resistance to friction and abrasion, and troubles such as blurring and flow of the image are not caused at all.
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公开(公告)号：DE2821422A1
公开(公告)日：1978-12-14
申请号：DE2821422
申请日：1978-05-16
Applicant: MITA INDUSTRIAL CO LTD
Inventor： NISHIBAYASHI KATSUMI , AMAGAI YOSHIMI , HIKAKE NORIO , KOUCHI TOSHIHIRO
Abstract: A developer for electrostatic images comprising a binder medium and a pigment dispersed in the binder medium is disclosed. This binder medium comprises (A) a thermoplastic or rubbery polymer containing a member selected from the group consisting of a halogen atom and a nitrile group at a concentration of at least 100 milliequivalents per 100 g of the polymer and (B) a binder having a melting temperature lower than that of the polymer (A) at an (A)/(B) mixing weight ratio of from 1/20 to 1/1. The halogen- or nitrile-containing polymer (A) is present in the form of fine particles dispersed in the continuous phase of the binder (B). This developer has good flowability and charge characteristics at the developing step and shows an excellent offset-preventing effect at the fixing step.
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公开(公告)号：AU522193B2
公开(公告)日：1982-05-20
申请号：AU3854778
申请日：1978-08-02
Applicant: MITA INDUSTRIAL CO LTD
Inventor： KOUCHI TOSHIHIRO , TAKAYAMA HIROSHI , AIZAWA TATSUO
Abstract: In a one-component type developer for electrophotography consisting essentially of a dry blend of fixing magneto-sensitive particles and flowability- and electric resistance-controlling fine particles, when an aromatic vinyl resin and/or an acrylic resin is used an a binder resin for the magneto-sensitive particles in combination with a low molecular weight olefin resin, the magneto-sensitive particles are much improved in the property of holding the flowability- and electric resistance-controlling fine particles on the surfaces thereof. Accordingly, these fine particles cannot be substantially separated from the magneto-sensitive particles under agitation conditions, development conditions and fixing conditions. As a result, contamination of the interior of a copying machine, especially an optical system, can be completely prevented, and also contamination of the background can be completely prevented. Further, the resulting fixed images have a very high resistance to friction and abrasion, and troubles such as blurring and flow of the image are not caused at all.
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