公开(公告)号：US5591266A

公开(公告)日：1997-01-07

申请号：US408564

申请日：1995-03-22

Applicant: Yoshihisa Osawa ,  Eizo Tsunoda ,  Ryuji Hosogaya ,  Akira Hatakeyama ,  Hideki Tanaka ,  Seiichi Tobisawa

Inventor： Yoshihisa Osawa ,  Eizo Tsunoda ,  Ryuji Hosogaya ,  Akira Hatakeyama ,  Hideki Tanaka ,  Seiichi Tobisawa

IPC: B05C5/02 ,  B05C9/06 ,  G11B5/842 ,  G11B5/848 ,  B05C3/02

CPC classification number: G11B5/848 ,  B05C5/0254 ,  B05C9/06

Abstract: In an extrusion type coating head according to the present invention, a center line average roughness (Ra) of an inner wall surface of a pocket is made in a predetermined range of 3.5 .mu.m or less and preferably a curvature part is provided, in the part where a surface of a slit joins to a surface of the pocket, which has the radius of curvature R of within a predetermined range. By these configurations, an easiness of cleaning in the pocket of the extrusion type coating head which is difficult to be cleaned is remarkably improved in particular, the rate of operation is improved, labor is saved, and adverse effects are prevented that might be brought by insufficient cleaning on the product coating such as streak generated on the coating surface and thickness fluctuation in the coating.

Abstract translation: 在根据本发明的挤出型涂布头中，将袋的内壁表面的中心线平均粗糙度（Ra）设定在3.5μm或更小的预定范围内，并且优选地，在 狭缝的表面连接到凹部的表面的部分，其具有在预定范围内的曲率半径R。 通过这些构造，特别是在难以清洗的挤出型涂布头的口袋中清洁的容易性得到显着改善，操作速度得到改善，节省了劳动，并且防止了可能带来的不利影响 对产品涂层的清洁不足，例如涂层表面产生的条纹和涂层的厚度波动。

公开(公告)号：US5643363A

公开(公告)日：1997-07-01

申请号：US408567

申请日：1995-03-22

Applicant: Ryuji Hosogaya ,  Eizo Tsunoda ,  Akira Hatakeyama ,  Yoshihisa Osawa ,  Hideki Tanaka ,  Seiichi Tobisawa

Inventor： Ryuji Hosogaya ,  Eizo Tsunoda ,  Akira Hatakeyama ,  Yoshihisa Osawa ,  Hideki Tanaka ,  Seiichi Tobisawa

IPC: B05C5/02 ,  B05C9/06 ,  G11B5/842 ,  G11B5/848 ,  B05C3/12

CPC classification number: B05C9/06 ,  B05C5/0254 ,  G11B5/848

Abstract: The center line average roughness (Ra) of the slit inner surfaces is made in a predetermined range of 5.0 .mu.m according to the present invention, and the straightness (W1) in the delivery direction of the coating solution thereof and the straightness (W2) in the perpendicular direction to the delivery direction thereof are made in predetermined ranges respectively in preferred embodiments. Thereby, development of wrinkles and inclined elongation in the tape itself are prevented when wound on a roll, the productivity is increased, and the product quality is improved.

Abstract translation: 根据本发明，狭缝内表面的中心线平均粗糙度（Ra）在5.0μm的预定范围内，其涂布溶液的输送方向和直线度（W2）的直线度（W1） 在优选实施例中分别在预定范围内沿垂直于其输送方向的方向。 因此，当卷绕在卷上时，可以防止带本身的褶皱和倾斜伸长的发展，提高生产率，并提高产品质量。

公开(公告)号：US5458913A

公开(公告)日：1995-10-17

申请号：US360282

申请日：1994-12-21

Applicant: Eizo Tsunoda ,  Yutaka Shimizu ,  Naomi Yoshiike ,  Katsumi Onozawa ,  Kazuo Katai ,  Eiichi Watanabe

Inventor： Eizo Tsunoda ,  Yutaka Shimizu ,  Naomi Yoshiike ,  Katsumi Onozawa ,  Kazuo Katai ,  Eiichi Watanabe

IPC: B05C5/02 ,  B05C9/04 ,  B05D1/26 ,  B05D3/00 ,  G03C1/74 ,  G11B5/848 ,  B05D3/12

CPC classification number: G11B5/848 ,  B05C5/0254 ,  B05C9/04 ,  B05D1/265 ,  G03C1/74

Abstract: In a coating method of extruding a coating liquid through a slit of an extrusion-type coating head to coat a running web, at a starting or restarting of the coating, the coating liquid is extruded through the slit of the coating head while the coating head is away from the web, and then the coating is started while a slightly large clearance is kept between the coating head and the web at the upstream side of the coating head, thereafter changing the coating state or arrangement to a steady coating state. Therefore, occurrence of a thicker portion of the coating film on the web at the start of the coating can be prevented. Further, at the end or interruption of the coating, the coating state or arrangement of the coating head is changed from the steady coating state to a state wherein a slightly large clearance is kept between the coating head and the web at the upstream side, and the coating head is moved away from the web to end the coating. Therefore, occurrence of a thicker portion of the coating film on the web at the end of the coating can be prevented. With this arrangement, at the start, restart, end and interruption of the coating, a uniformly coated film can be also formed on one surface of the web whose other surface has already been coated with a coating liquid.

Abstract translation: 在通过挤出型涂布头的狭缝挤出涂布液以涂布流动纤维网的涂布方法中，在涂层的开始或重新开始时，涂布液通过涂布头的狭缝挤出，同时涂布头 离开纸幅，然后开始涂布，同时在涂布头的上游侧在涂布头和纸幅之间保持略大的间隙，然后将涂布状态或布置改变为稳定的涂布状态。 因此，可以防止涂层开始时在卷筒纸上产生较厚的涂膜。 此外，在涂层的末端或中断时，涂布头的涂布状态或布置从稳定涂布状态改变到在涂布头和在上游侧的纸幅之间保持略大的间隙的状态，以及 涂布头从纸幅移开以使涂层结束。 因此，可以防止在涂布结束时在卷筒纸上出现较厚的涂膜。 通过这种布置，在涂层的开始，重新启动，结束和中断的情况下，也可以在其另一表面已经涂覆有涂布液的幅材的一个表面上形成均匀涂布的膜。

公开(公告)号：US5424094A

公开(公告)日：1995-06-13

申请号：US265106

申请日：1994-06-24

Applicant: Eizo Tsunoda ,  Kaoru Kawasaki ,  Akihiko Seki ,  Kazuyuki Shimazaki

Inventor： Eizo Tsunoda ,  Kaoru Kawasaki ,  Akihiko Seki ,  Kazuyuki Shimazaki

IPC: G11B5/84 ,  G11B5/842 ,  G11B5/848 ,  H01F10/00

CPC classification number: G11B5/848 ,  G11B5/84 ,  G11B5/842 ,  Y10S428/90

Abstract: A mixture containing a magnetic powder, a binder, and an organic solvent is kneaded by passing it through a twin-shaft continuous kneader while the shearing force applied to the mixture is varied by changing the set angle of paddles used. The temperature of the mixture is controlled to be higher than Tg and lower than the boiling point of the organic solvent when it passes through the maximum shearing force zone, and to be lower than the temperature of the mixture upon its passage through the maximum shearing force zone, preferably lower than Tg when it passes through zones other than the maximum shearing force zone. There is obtained a magnetic recording medium which has improved dispersion of magnetic powder and excellent electromagnetic properties as well as a low coefficient of friction and improved transport stability.

Abstract translation: 将含有磁性粉末，粘合剂和有机溶剂的混合物通过双轴连续捏合机进行捏合，同时施加于混合物的剪切力通过改变所使用的桨叶的设定角度来改变。 控制混合物的温度高于Tg，并且当其通过最大剪切力区时低于有机溶剂的沸点，并且低于混合物在通过最大剪切力时的温度 区域，当其通过除最大剪切力区域以外的区域时，优选地低于Tg。 得到了具有改善的磁粉分散性和优异的电磁特性以及低摩擦系数和改进的运输稳定性的磁记录介质。

公开(公告)号：US5624497A

公开(公告)日：1997-04-29

申请号：US408287

申请日：1995-03-22

Applicant: Hideki Tanaka ,  Eizo Tsunoda ,  Ryuji Hosogaya ,  Akira Hatakeyama ,  Yoshihisa Osawa ,  Seiichi Tobisawa

Inventor： Hideki Tanaka ,  Eizo Tsunoda ,  Ryuji Hosogaya ,  Akira Hatakeyama ,  Yoshihisa Osawa ,  Seiichi Tobisawa

IPC: B05C5/02 ,  B05C9/06 ,  G11B5/842 ,  G11B5/848 ,  B05C3/02

CPC classification number: B05C5/0254 ,  G11B5/848 ,  B05C9/06

Abstract: In a coating apparatus having an extrusion coating head, the working value H of a back end edge which corresponds to an end portion at the downstream side of a support feeding direction of a back edge of the extrusion coating head is set to 25 .mu.m or less, and the straightness of said back end edge with respect to the coating width is set to 5 .mu.m or less. Accordingly, a coating operation to form coated films at a stable thickness can be stably performed without occurrence of streaks and coating unevenness on the films, and a judgment on coating surface characteristics can be readily performed without actually carrying the coating operation.

Abstract translation: 在具有挤出涂布头的涂布装置中，与挤出涂布头的后边缘的支承进给方向的下游侧的端部对应的后端边缘的工作值H设定为25μm或 并且所述后端边缘相对于涂布宽度的平直度设定为5μm以下。 因此，可以稳定地进行形成稳定厚度的涂膜的涂布操作，而不会在膜上产生条纹和涂布不均匀，并且可以容易地进行涂层表面特性的判断而不实际进行涂布操作。

公开(公告)号：US5122414A

公开(公告)日：1992-06-16

申请号：US633781

申请日：1990-12-26

Applicant: Yutaka Shimizu ,  Eizo Tsunoda

Inventor： Yutaka Shimizu ,  Eizo Tsunoda

IPC: G11B5/708 ,  G11B5/845

CPC classification number: G11B5/7085 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/257 ,  Y10T428/265

Abstract: In a magnetic recording medium comprising a magnetic layer containing a magnetic powder, 5 to 20% by weight based on the weight of the magnetic powder of a non-magnetic abrasive having a Mohs hardness of at least 6, and a binder on a non-magnetic substrate, the magnetic layer becomes more durable while maintaining electromagnetic properties by distributing the abrasive in the magnetic layer such that its concentration is highest in a surface-adjoining portion and continuously decreases therefrom toward the substrate side. The medium is prepared by applying a magnetic coating to a substrate and continuously passing the coated substrate through reversing magnetic fields prior to curing of the coating.

Abstract translation: 在包含含有磁性粉末的磁性层的磁记录介质中，基于莫氏硬度至少为6的非磁性研磨剂的磁性粉末的重量为5〜20重量％ 磁性基板，通过将研磨剂分布在磁性层中，磁性层变得更耐用，同时保持电磁特性，使得其在表面相邻部分中的浓度最高，并且朝向衬底侧连续地减小。 通过将磁性涂层施加到基底并在固化涂层之前使涂覆的基底连续地通过反转磁场来制备介质。

公开(公告)号：US5634976A

公开(公告)日：1997-06-03

申请号：US408276

申请日：1995-03-22

Applicant: Ryuji Hosogaya ,  Eizo Tsunoda ,  Akira Hatakeyama ,  Yoshihisa Osawa ,  Hideki Tanaka ,  Seiichi Tobisawa

Inventor： Ryuji Hosogaya ,  Eizo Tsunoda ,  Akira Hatakeyama ,  Yoshihisa Osawa ,  Hideki Tanaka ,  Seiichi Tobisawa

IPC: B05C5/02 ,  G11B5/842 ,  G11B5/848 ,  B05C3/02

CPC classification number: G11B5/848 ,  B05C5/0254

Abstract: A coating apparatus having an extrusion type coating head to form a coating on the surface of a support by extruding a coating liquid continuously or successively from a slit, wherein the slit is tapered so as to expand or become wider gradually from its inlet end so as to allow the coating liquid to be extruded toward its outlet end and apply the coating liquid onto the surface of the support and wherein an opening slit width (d1) at the inlet end of the slit and an opening slit width (d2) at the outlet end thereof satisfies the following relations:5% .ltoreq.[(d2-d1)/d1].times.100.ltoreq.20%.The arrangement of the slit can form a coating in a uniform film thickness by preventing the occurrence of irregularities or streaks on the surface of the coating or by suppressing a variation in film thickness.

Abstract translation: 一种涂布装置，具有挤出型涂布头，用于通过从狭缝连续地或连续地挤出涂布液而在支撑体的表面上形成涂层，其中狭缝从其入口端逐渐变细或逐渐变宽，以便 以使涂布液向其出口端挤出，并将涂布液施加到支撑体的表面上，并且其中狭缝的入口端处的开口狭缝宽度（d1）和出口处的开口狭缝宽度（d2） 其端部满足以下关系：5％

公开(公告)号：US06436465B1

公开(公告)日：2002-08-20

申请号：US08738469

申请日：1996-10-30

Applicant: Eizo Tsunoda ,  Yutaka Shimizu ,  Masujiro Seki ,  Naomi Yoshiike ,  Kazuo Katai ,  Katsumi Onozawa

Inventor： Eizo Tsunoda ,  Yutaka Shimizu ,  Masujiro Seki ,  Naomi Yoshiike ,  Kazuo Katai ,  Katsumi Onozawa

IPC: B05D512

CPC classification number: G11B5/848

Abstract: A magnetic paint is extrusion coated to a length of splice jointed webs through a coating head by continuously feeding the length of webs across the head. When a splice joint passes across the head, the head is moved apart from the web before passage and contacted with the web after passage. Objectionable coating portions which are formed as a result of moving the head out of and into contact with the web are scraped off by a scraping roll downstream of the head.

Abstract translation: 通过连续地将长度的纤维网连续地供给到头部上，通过涂覆头将磁性涂料挤出涂覆到一段接头连接的腹板上。 当接头接头穿过头部时，头部在通过之前从腹板移开并且在通过后与腹板接触。 由于将头部移动并与纸幅接触而形成的不良涂层部分被头部下游的刮刀刮掉。

公开(公告)号：US5597615A

公开(公告)日：1997-01-28

申请号：US359828

申请日：1994-12-20

Applicant: Eizo Tsunoda ,  Yutaka Shimizu ,  Naomi Yoshiike ,  Katsumi Onozawa ,  Kazuo Katai ,  Eiichi Watanabe

Inventor： Eizo Tsunoda ,  Yutaka Shimizu ,  Naomi Yoshiike ,  Katsumi Onozawa ,  Kazuo Katai ,  Eiichi Watanabe

IPC: B05D1/26 ,  B05C5/02 ,  B05C9/04 ,  B05C9/06 ,  B05C9/14 ,  B05C13/00 ,  G11B5/848 ,  B05D3/12 ,  B05D3/02

CPC classification number: G11B5/848 ,  B05C5/0254 ,  B05C9/04 ,  B05C9/06

Abstract: An extrusion coating head which is disposed between a drier for performing a non-contact drying operation and a support roll located at the upstream side of and nearest to the drier is designed so that a back edge surface thereof is designed to have an round surface having a radius of curvature R which satisfies the following inequality: 3 mm.ltoreq.R.ltoreq.30 mm, and the entire R-surface portion of the back edge of the coating head is located at a position higher than a tangential line drawn to the front edge surface at a slit-side edge point of the front edge so as to project toward the web side. The running web is coated with the coating liquid by the extrusion-type coating head, and then dried through a non-contact drying process.

Abstract translation: 设置在用于进行非接触式干燥操作的干燥器和位于干燥器的上游侧并且最接近干燥器的支撑辊之间的挤出涂布头被设计成使得其后边缘表面被设计成具有圆形表面， 满足以下不等式的曲率半径R：3mm

公开(公告)号：US5532041A

公开(公告)日：1996-07-02

申请号：US262366

申请日：1994-06-20

Applicant: Yoshihiro Honjo ,  Yoshisuke Yamakawa ,  Hiroshi Kawahara ,  Eizo Tsunoda

Inventor： Yoshihiro Honjo ,  Yoshisuke Yamakawa ,  Hiroshi Kawahara ,  Eizo Tsunoda

IPC: C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  G11B5/00 ,  G11B5/716 ,  G11B5/73 ,  G11B5/842 ,  G11B5/66 ,  B32B3/10 ,  B32B5/16

CPC classification number: G11B5/716 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/26 ,  Y10T428/265

Abstract: A magnetic recording medium records two or more signals having different frequency bands by frequency multiplex recording. The non-magnetic substrate includes a first magnetic layer and a second magnetic layer on that order, said second magnetic layer having a thickness amounting to 70% or less of the shortest recording wavelength of the signals to be recorded.

Abstract translation: 磁记录介质通过频率复用记录记录具有不同频带的两个或多个信号。 非磁性基板在该顺序上包括第一磁性层和第二磁性层，所述第二磁性层的厚度为要记录的信号的最短记录波长的70％以下。