Nippon Steel Corporation

Canon Kabushiki Kaisha

Nippon Steel Sumitomo Metal Corporation

Tokico, Ltd.

Shuichi Nakamura

Shinji Yamamoto

Yoshiyuki Ushigami

Hiroyasu Fujii

Takeshi Akiyama

Yusuke Yamamoto

Hiroki Kitamura

Kenzo Tojima

Masanao Motoyama

Yoshiyuki Akiba

Takaaki Nagaoka

Shinsuke Takatani

Kenichi Murakami

Tsutomu Takata

Kazuhiro Kojima

Seiki Takebayashi

Norihiro Yamamoto

Tsutomu Takada

Shunsuke Okumura

Toshiyuki Fukui

Yusuke Kawamura

Tomoji Kumano

Shohji Nagano

Yasuhito Totsuka

Ryuichi Shimura

Fumiaki Takahashi

Shuichi Yamazaki

Hiroshi Abe

Kazumasa Hamaguchi

Norikazu Fujii

Kazumi Mizukami

Takeshi Imai

Koji Yamasaki

Takeshi Kimura

Takashi Kataoka

Tomoaki Ito

Shinya Yano

Yuji Kubo

Tomohiko Shimoyama

Takehide Senuma

Shingo Okada

Yoshiaki Hirota

Osamu Morimoto

Tatsuya Kumagai

Hotaka Honma

Maremizu Ishibashi

Genichi Shigesato

Kiyoshi Sawano

Yasumitsu Kondo

Masaaki Sugiyama

Suo Saruwatari

Chie Hama

Shota Morimoto

Masahide Urago

Yohichi Zaizen

Hotaka Homma

Shimura Ryuichi

An electronic device that is capable of keeping the impedance (ground impedance) between a printed circuit board and a shield case low. The electronic device includes a printed circuit board that has ground layer(s) which is conductive and is provided at a location in the thickness direction of the printed circuit board, and the shield case which is disposed on one side of the printed circuit board and consists of a hollow body that has conductivity. A through hole(s) passing through the ground layer is formed in the printed circuit board. A projecting portion(s), which is inserted into the through hole(s), is formed in a projecting manner in the shield case. In a state of being inserted in the through hole(s), the projecting portion(s) is electrically connected to the ground layer via solder.

Electronic device capable of suppressing high ground impedance, and method for manufacturing the electronic device

A method for manufacturing a grain-oriented electrical steel sheet includes: a silicon steel material production process of producing a silicon steel material; a hot rolling process of obtaining a hot rolled sheet by subjecting the silicon steel material to hot rolling; a cold rolling process of obtaining a steel sheet having a final sheet thickness by subjecting the hot rolled sheet to a single cold rolling process or to multiple cold rolling processes having intermediate annealing performed between cold rolling processes; a decarburization annealing process of subjecting the steel sheet to decarburization annealing using a decarburization annealing furnace including a heating area and a soaking area; and a final annealing process of applying an annealing separator having alumina as a main component to the steel sheet and subjecting the steel sheet to final annealing, wherein, in the decarburization annealing process, when X represents the Cr content of the silicon steel material in terms of mass %, an oxidation degree P1 of an atmosphere gas in the heating area satisfies the following Expression 1 and an oxidation degree P2 of an atmosphere gas in the soaking area satisfies the following Expression 2:0.18−0.008≤1≤0.25+0.15≤0.20  (Expression 1); and0.01≤2≤0.15  (Expression 2).

Method for manufacturing grain-oriented electrical steel sheet

A method for producing a grain oriented electrical steel sheet includes a decarburization annealing process where an oxidation degree PHO/PHis controlled, an annealing separator applying process where a mass ratio of MgO and AlOin an annealing separator is controlled, a final annealing process where an oxidation degree is controlled when atmosphere includes hydrogen or a dew point is controlled when atmosphere consists of inert gas, and an insulation coating forming process where a baking temperature and a heat treatment temperature are controlled.

Method for producing grain oriented electrical steel sheet

A grain-oriented electrical steel sheet according to an aspect of the present invention includes an underlying steel sheet and a tension-insulation coating arranged on the surface of the underlying steel sheet, and a ten-point average roughness RzL in an L direction obtained when the tension-insulation coating is removed from the grain-oriented electrical steel sheet with an alkaline solution, and then the surface of the underlying steel sheet is measured in a rolling direction is 6.0 μm or less.

Grain-oriented electrical steel sheet, and steel sheet serving as base sheet for grain-oriented electrical steel sheet

A method for manufacturing a grain-oriented electrical steel sheet includes: a silicon steel material production process of producing a silicon steel material; a hot rolling process of obtaining a hot rolled sheet by subjecting the silicon steel material to hot rolling; a cold rolling process of obtaining a steel sheet of a final sheet thickness by subjecting the hot rolled sheet to a single cold rolling process or multiple cold rolling processes having intermediate annealing performed between the cold rolling processes; a decarburization annealing process of subjecting the steel sheet to decarburization annealing; and a final annealing process of applying an annealing separator containing alumina as a main component to the steel sheet and subjecting the steel sheet to final annealing.

A grain oriented electrical steel sheet includes: by mass %, 0.010% or less of C; 2.50 to 4.00% of Si; 0.010% or less of acid soluble Al; 0.012% or less of N; 1.00% or less of Mn; 0.020% or less of S; and a balance comprising Fe and impurities, and has a tension-insulation coating at steel sheet surface and a SiOintermediate oxide film layer with an average thickness of 1.0 nm to 1.0 μm at an interface between the tension-insulation coating and the steel sheet surface. In the grain oriented electrical steel, when a surface of the intermediate oxide film layer is analyzed by an infrared reflection spectroscopy, a peak intensity Iat 1250 cmand a peak intensity Iat 1200 cmsatisfy I/I≥0.010.

Grain oriented electrical steel sheet and producing method thereof

A grain oriented electrical steel sheet includes the texture aligned with Goss orientation. In the grain oriented electrical steel sheet, when (αβγ) and (αβγ) represent deviation angles of crystal orientations measured at two measurement points which are adjacent on the sheet surface and which have an interval of 1 mm, the boundary condition BA is defined as [(α−α)+(β−β)+(γ−γ)]≥0.5°, and the boundary condition BB is defined as [(α−α)+(β−β)+(γ−γ)]≥2.0°, the boundary which satisfies the boundary condition BA and which does not satisfy the boundary condition BB is included.

Grain oriented electrical steel sheet

In a base sheet for a grain-oriented electrical steel sheet of the present invention, an amount of surface oxygen x per one surface of the base sheet and a value y of a peak (ΔR/R@1250 cm) of SiOon the surface of the base sheet obtained by infrared reflection spectroscopy satisfy y≥1500xand y≥0.24. A method of manufacturing the base sheet for a grain-oriented electrical steel sheet of the present invention includes: adjusting the amount of surface oxygen per one surface of a final-annealed grain-oriented silicon steel sheet to more than 0.01 g/mand 0.05 g/mor less, or more than 0.05 g/mand 0.10 g/mor less; and performing thermal oxidation annealing in an atmosphere in which an oxidation potential represented by a ratio P/Pof water vapor pressure to hydrogen pressure is 0.0081 or less in a case where the amount of surface oxygen is more than 0.01 g/mand 0.05 g/mor less, or in an atmosphere in which the oxidation potential is 0.005 or less in a case where the amount of surface oxygen is more than 0.05 g/mand 0.10 g/mor less, at a soaking temperature of 1000° C. or lower to form an externally oxidized layer on a surface of the grain-oriented silicon steel sheet.

Base sheet for grain-oriented electrical steel sheet, grain-oriented silicon steel sheet which is used as material of base sheet for grain-oriented electrical steel sheet, method of manufacturing base sheet for grain-oriented electrical steel sheet, and method of manufacturing grain-oriented electrical steel sheet

A grain oriented electrical steel sheet includes the texture aligned with Goss orientation. In the grain oriented electrical steel sheet, when (αβγ) and (αβγ) represent deviation angles of crystal orientations measured at two measurement points which are adjacent on the sheet surface and which have an interval of 1 mm, the boundary condition BA is defined as |β−β|≥0.5°, and the boundary condition BB is defined as [(α−α)+(β−β)+(γ−γ)]≥2.0°, the boundary which satisfies the boundary condition BA and which does not satisfy the boundary condition BB is included.

A grain oriented electrical steel sheet includes the texture aligned with Goss orientation. In the grain oriented electrical steel sheet, when (&#x3b1;&#x3b2;&#x3b3;) and (&#x3b1;&#x3b2;&#x3b3;) represent deviation angles of crystal orientations measured at two measurement points which are adjacent on the sheet surface and which have an interval of 1 mm, the boundary condition BA is defined as |&#x3b3;&#x2212;&#x3b3;|&#x2265;0.5&#xb0;, and the boundary condition BB is defined as [(&#x3b1;&#x2212;&#x3b1;)+(&#x3b2;&#x2212;&#x3b2;)+(&#x3b3;&#x2212;&#x3b3;)]&#x2265;2.0&#xb0;, the boundary which satisfies the boundary condition BA and which does not satisfy the boundary condition BB is included.

An image forming apparatus includes: a photoconductor; an optical scanner configured to cause a plurality of light beams to scan simultaneously on a surface of the photoconductor; a pixel size calculator configured to calculate a pixel size corresponding to a scanning position of each of the light beams; a light-quantity value quantization converter configured to quantize a light-quantity value corresponding to the scanning position of each of the light beams; a storage configured to store conversion data for conversion from image density data into a light beam driving signal; a signal converter configured to perform, with the conversion data, conversion from the image density data into the light beam driving signal; a selector configured to select the conversion data, according to the pixel size calculator and the light-quantity value quantization converter; and a light source configured to emit the plurality of light beams, based on driving data obtained through conversion by a driving data converter with the conversion data selected by the selector, in which a number of pieces of the conversion data correspond to a number resulting from a number of obtainable pixel size values&#xd7;a number of obtainable light-quantity quantized values&#xd7;a number of light beams.

Image forming apparatus

A grain-oriented electrical steel sheet includes: a base steel sheet; an intermediate layer arranged in contact with the base steel sheet; and an insulation coating arranged in contact with the intermediate layer to be an outermost surface, in which the intermediate layer has a local oxidized area when viewing a cross section whose cutting direction is parallel to a thickness direction, and a thickness of the intermediate layer in an area where the local oxidized area is included is 50 nm or more, and a thickness of the intermediate layer in an area where the local oxidized area is not included is less than 50 nm.

Grain-oriented electrical steel sheet

A grain-oriented electrical steel sheet includes: a base steel sheet; an intermediate layer arranged in contact with the base steel sheet; and an insulation coating arranged in contact with the intermediate layer to be an outermost surface, in which the insulation coating has a crystalline phosphide-containing layer containing a crystalline phosphide in an area in contact with the intermediate layer when viewing a cross section whose cutting direction is parallel to a thickness direction.

A grain-oriented electrical steel sheet includes: a steel sheet; and an amorphous oxide layer that is formed on the steel sheet, in which a glossiness of a surface is 150% or higher.

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Tokyo, Japan

Shuichi Nakamura