公开(公告)号：US3982938A

公开(公告)日：1976-09-28

申请号：US441861

申请日：1974-02-12

申请人： Satoru Honjo ,  Hajime Miyatuka ,  Seiji Matsumoto

发明人： Satoru Honjo ,  Hajime Miyatuka ,  Seiji Matsumoto

IPC分类号： G03G5/04 ,  G03G9/08 ,  G03G9/09

CPC分类号： G03G9/0926 ,  G03G5/04 ,  G03G9/0825 ,  Y10S430/101

摘要： Improved toner particles each comprising an intimate mixture of a photoconductive pigment and an insulating binder capable of transporting charge carriers when the charge carriers are injected therein from the pigment, the proportion of the total volume of the pigment in the toner particle being 2 to 30 volume percent of the toner particle and the insulating binder being substantially transparent to the light in the region of the spectrum to which the pigment is sensitive. The toner particle may have therein a core or cores of a material which is substantially transparent to the light in the spectral-sensitive region of the pigment. The toner particles have improved surface durability and can be used repeatedly.

摘要翻译： 改进的调色剂颗粒各自包含光电导颜料和当载体从颜料中注入时能够输送电荷载体的绝缘粘合剂的紧密混合物，调色剂颗粒中的颜料总体积的比例为2至30体积 调色剂颗粒和绝缘粘合剂的百分比对于颜料敏感的光谱区域中的光基本上是透明的。 调色剂颗粒可以在其中具有对颜料的光谱敏感区域中的光基本上透明的材料的芯或芯。 调色剂颗粒具有改善的表面耐久性并可重复使用。

公开(公告)号：US4465737A

公开(公告)日：1984-08-14

申请号：US462179

申请日：1983-01-31

申请人： Hajime Miyatuka ,  Akira Kasuga ,  Akihiro Matsufuji ,  Tsutomu Sugisaki

发明人： Hajime Miyatuka ,  Akira Kasuga ,  Akihiro Matsufuji ,  Tsutomu Sugisaki

IPC分类号： G11B5/708 ,  C09D5/23 ,  C09D7/12 ,  C10M105/08 ,  C10N40/18 ,  C10N50/08 ,  G11B5/70 ,  G11B5/71 ,  G11B5/714 ,  H01F10/02

CPC分类号： G11B5/71 ,  G11B5/714 ,  Y10S428/90 ,  Y10T428/269 ,  Y10T428/2982 ,  Y10T428/31678

摘要： A magnetic recording medium is disclosed. The medium is comprised of a support having a magnetic layer coated thereon. The magnetic layer is comprised of a ferromagnetic metal powder and a binder. The ferromagnetic metal powder has a specific surface area of not less than 30 m.sup.2 /g. The magnetic layer is further comprised of a fatty acid and a fatty acid ester in a total amount of 2 to 10 wt % based on the weight of the ferromagnetic metal powder. The proportion of the fatty acid ester is 15 to 60 wt % based on the total weight of the fatty acid and the fatty acid ester. The surface roughness of the magnetic layer is not more than 0.03.mu.. The recording medium has excellent video characteristics obtained by the use of fine metal particles having the disclosed specific surface area and by increasing the surface properties of the magnetic layer so that spacing loss between the recording or reproducing head and the recording tape is decreased and output level is increased and modulation noise is decreased so that the video S/N is increased.

摘要翻译： 公开了一种磁记录介质。 介质由其上涂覆有磁性层的载体组成。 磁性层由铁磁金属粉末和粘合剂组成。 铁磁性金属粉末的比表面积为30m 2 / g以上。 磁性层进一步由脂肪酸和脂肪酸酯组成，总量为2〜10重量％，以铁磁性金属粉末的重量计。 脂肪酸酯的比例相对于脂肪酸和脂肪酸酯的总重量为15〜60重量％。 磁性层的表面粗糙度不大于0.03μm。 记录介质具有通过使用具有公开的比表面积的细金属颗粒和通过增加磁性层的表面性质而获得的优异的视频特性，使得记录或再现头与记录带之间的间隔损耗减小并且输出水平 增加了调制噪声，从而增加了视频S / N。

公开(公告)号：US3969113A

公开(公告)日：1976-07-13

申请号：US381819

申请日：1973-07-23

申请人： Hajime Miyatuka

发明人： Hajime Miyatuka

IPC分类号： G03G5/087 ,  G03G13/10

CPC分类号： G03G5/087 ,  Y10S430/148

摘要： A photoconductive binder layer comprising a particulate mixture of photosensitive titanium dioxide and photosensitive cadmium pigment dispersed in an insulating resin binder.

摘要翻译： 光敏性粘合剂层，其包含分散在绝缘树脂粘合剂中的光敏二氧化钛和感光镉颜料的颗粒混合物。

公开(公告)号：US4455345A

公开(公告)日：1984-06-19

申请号：US457319

申请日：1983-01-11

申请人： Hajime Miyatuka ,  Akira Kasuga

发明人： Hajime Miyatuka ,  Akira Kasuga

IPC分类号： C09D5/23 ,  C09D7/12 ,  G11B5/706 ,  G11B5/708 ,  G11B5/714 ,  H01F1/047 ,  H01F10/02

CPC分类号： G11B5/70605 ,  G11B5/70615 ,  G11B5/7085 ,  G11B5/714 ,  H04H2201/13 ,  Y10S428/90 ,  Y10T428/26 ,  Y10T428/31678

摘要： A magnetic recording medium is disclosed. The medium is comprised of a support having a magnetic layer coated thereon. The magnetic layer is comprised of ferromagnetic metal powder and a binder. The ferromagnetic metal powder has a specific surface area of 35 to 70 m.sup.2 /g, a saturation magnetization (.sigma..sub.s) of 120 to 160 emu/g and a metal content of 75 to 98 wt %. The magnetic recording medium has a high S/N ratio, particularly a high video S/N ratio and has stable magnetic properties.

摘要翻译： 公开了一种磁记录介质。 介质由其上涂覆有磁性层的载体组成。 磁性层由铁磁金属粉末和粘合剂组成。 铁磁性金属粉末的比表面积为35〜70m 2 / g，饱和磁化强度（sigma）为120〜160emu / g，金属含量为75〜98wt％。 磁记录介质具有高S / N比，特别是高视频S / N比，并具有稳定的磁特性。

公开(公告)号：US4072522A

公开(公告)日：1978-02-07

申请号：US741588

申请日：1976-11-15

申请人： Hajime Miyatuka

发明人： Hajime Miyatuka

IPC分类号： G03G5/08

CPC分类号： G03G5/08

摘要： Electronic-photography light-sensitive material provided with a light-sensitive material layer suitable for rendering of continuous gradation of tones.

摘要翻译： 电子摄影感光材料设置有适于呈现连续灰度色调的感光材料层。

公开(公告)号：US3968044A

公开(公告)日：1976-07-06

申请号：US438896

申请日：1974-02-01

申请人： Yasuo Tamai ,  Hajime Miyatuka

发明人： Yasuo Tamai ,  Hajime Miyatuka

IPC分类号： G03G9/12 ,  G03G9/13

CPC分类号： G03G9/122 ,  G03G9/132 ,  Y10S430/105

摘要： A liquid developer composition is given whereby a dispersion comprising a milled mixture of graft pigment and alkyd resin is dispersed in an insulating liquid.

摘要翻译： 给出液体显影剂组合物，由此将包含接枝颜料和醇酸树脂的研磨混合物的分散体分散在绝缘液体中。

公开(公告)号：US4481253A

公开(公告)日：1984-11-06

申请号：US448651

申请日：1982-12-10

申请人： Akihiro Matsufuji ,  Shizuo Umemura ,  Akira Kasuga ,  Hajime Miyatuka ,  Goro Akashi

发明人： Akihiro Matsufuji ,  Shizuo Umemura ,  Akira Kasuga ,  Hajime Miyatuka ,  Goro Akashi

IPC分类号： B22F9/22 ,  G11B5/706 ,  H01F1/06 ,  H01F10/02

CPC分类号： B22F9/22 ,  G11B5/70615 ,  H01F1/065 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/265 ,  Y10T428/266 ,  Y10T428/31678

摘要： A process for preparing a ferromagnetic metal powder and a magnetic recording medium utilizing that powder are disclosed. The ferromagnetic metal powder is prepared by heat-treating an acicular iron oxyhydroxide or an acicular iron oxide powder prepared from the acicular iron oxyhydroxide in a non-reducing gas at a temperature of from 300.degree. C. to 1000.degree. C. or in a reducing gas at a temperature of from 150.degree. C. to 500.degree. C. The heat-treated material is washed and then reduced under heating. The ferromagnetic metal powder prepared in this manner is dispersed in a binder and cated on a non-magnetic base to form a magnetic recording medium. By utilizing the washing step followed by heat-treating preparing the ferromagnetic metal powder a large amount of water soluble impurities are removed from the metal powder. The metal powder produced according to this disclosed process as excellent oxidation stability and ability to resist corrosion. Accordingly, the magnetic recording medium prepared utilizing this powder has an excellent ability to resist oxidation and corrosion even when subjected to adverse conditions.

摘要翻译： 公开了一种制备铁磁金属粉末和利用该粉末的磁记录介质的方法。 通过在300〜1000℃的温度或非还原性气体中以非还原性气体热处理由针状羟基氧化铁制成的针状羟基氧化铁或针状氧化铁粉末，制备强磁性金属粉末。 在150〜500℃的温度下进行气体洗涤。将热处理材料洗涤，然后在加热下还原。 以这种方式制备的铁磁性金属粉末分散在粘合剂中并在非磁性基底上形成磁记录介质。 通过利用洗涤步骤进行热处理，制备铁磁性金属粉末，从金属粉末中除去大量的水溶性杂质。 根据该公开方法制备的金属粉末具有优异的氧化稳定性和耐腐蚀性。 因此，利用这种粉末制备的磁记录介质即使在不利条件下也具有优异的抵抗氧化和腐蚀的能力。

公开(公告)号：US4025338A

公开(公告)日：1977-05-24

申请号：US609648

申请日：1975-09-02

申请人： Hajime Miyatuka ,  Satoru Honjo

发明人： Hajime Miyatuka ,  Satoru Honjo

IPC分类号： B25H7/04 ,  B05D7/14 ,  B23D36/00 ,  B23H9/06 ,  B23K7/08 ,  B23P13/00 ,  C09D5/00 ,  G03G5/00 ,  G03G7/00 ,  G03G8/00 ,  G03G13/22 ,  G03G15/05 ,  G03G15/22

CPC分类号： B23P13/00 ,  B23H9/06 ,  C09D5/008 ,  G03G13/22 ,  G03G7/00 ,  G03G8/00 ,  Y10T409/30112

摘要： A process for machining metal work comprising forming a marked-off image from an image-forming material on a surface of a metal work or on a recording layer provided on the surface of the metal work and subsequently machining the metal work by machine cutting and/or oil immersion electrospark machining on the basis of the marked-off image, and including applying a protective resin layer on the image-bearing surface of the metal work prior to any metal machining, the resin layer comprising a mixture of nitrocellulose and a methacrylic polymer in a weight ratio ranging from about 80:20 to 40:60 of the nitrocellulose to the methacrylic polymer and not hindering the viewing of the image, and the methacrylic polymer mainly comprising methyl methacrylate and having a glass transition temperature of higher than about 85.degree. C.

摘要翻译： 一种用于加工金属加工的方法，包括从金属加工件的表面上的图像形成材料或设置在金属加工件的表面上的记录层上形成标记的图像，随后通过机械切割和/ 或基于标记图像的油浸电火花加工，并且包括在任何金属加工之前在金属加工的图像承载表面上施加保护树脂层，所述树脂层包含硝化纤维素和甲基丙烯酸聚合物的混合物 硝酸纤维素至甲基丙烯酸类聚合物的重量比范围为约80:20至40:60，并且不妨碍图像的观看，主要包含甲基丙烯酸甲酯并且玻璃化转变温度高于约85℃的甲基丙烯酸类聚合物 C。

公开(公告)号：US3986968A

公开(公告)日：1976-10-19

申请号：US438897

申请日：1974-02-01

申请人： Yasuo Tamai ,  Hajime Miyatuka

发明人： Yasuo Tamai ,  Hajime Miyatuka

IPC分类号： G03G9/12

CPC分类号： G03G9/12

摘要： A liquid developer composition is given whereby a mixture of pigment and resin is milled and washed prior to being dispersed in the carrier liquid.

公开(公告)号：US4105448A

公开(公告)日：1978-08-08

申请号：US607521

申请日：1975-08-25

申请人： Hajime Miyatuka ,  Takashi Saida ,  Satoru Honjo

发明人： Hajime Miyatuka ,  Takashi Saida ,  Satoru Honjo

IPC分类号： B25H7/04 ,  B26D5/00 ,  G03G5/05 ,  G03G15/05 ,  G03G15/22 ,  G03G5/087

CPC分类号： G03G5/0567 ,  G03G5/0546

摘要： An electrophotographic photosensitive layer comprising finely divided photoconductive powders and a resin binder comprising a mixture of an acrylic resin and an epoxy ester resin in a ratio by volume of the acrylic resin to the epoxy ester resin of about 10:90 to 70:30; and an electrophotographic marking method suitable for use on substrates subsequently machined comprising electrophotographically marking machining information on a coating film, forming on a support to be machined, of the electrophotographic photosensitive layer as defined above and hardening the coating film.