Nippon Steel Corporation

Ricoh Company, Ltd.

Kaoru Ito

Minoru Sasaki

Wataru Ohashi

Katsuhiko Nuno

Shinya Nariki

Katsushige Matsuzaki

Yoshitaka Yamana

Izumi Matsushita

Yoshimasa Ikeda

Kenji Kawahito

Fumihiko Hasegawa

Tatsunori Sunagawa

Noritane Tsugane

Michimasa Sasaki

Toshiaki Kurihara

Junji Omori

Yukihiro Hida

Tsuneo Enokido

Shoichi Osada

Kiyoshi Aritome

Junichi Shinohara

Katsuhiro Minamida

Ikuya Tsurukawa

Yohsuke Suzuki

Takuroh Yasuda

Akihiro Etoh

Keiki Fujita

A lens drive device in at least one lens barrel holding a lens moveably includes a motor to drive the lens; an acceleration detection section to detect an acceleration; and an output control section to control an output of the motor corresponding to the acceleration detected by the acceleration detection section. The output control section determines whether the acceleration detected by the acceleration detection section falls within a predetermined acceleration range or not. When the acceleration is determined to be within the range, a further determination of whether the lens drive device is in a stationary state is performed. When it is determined not being in the stationary state, the motor is driven by a maximum drive voltage. When it is determined being in the stationary state, a further determination of whether the posture is horizontal or not is performed.

Lens drive device, image pickup device and lens drive method

A lens barrel, including, a moving frame () to hold a lens (), a direct-advance ring () provided on an outer periphery of the moving frame and movable relative to the moving frame in an optical direction, a resilient member () provided between the moving frame and the direct-advance ring, and a control part () provided on the moving frame to control an amount of movement of the direct-advance ring in the optical direction.

Lens barrel

An atomization roasting furnace for producing ferrite raw material powder includes an elongated roasting furnace body with a center burner located at the top end thereof. At least three liquid spray nozzles are located in an expansion slope portion below the center burner circumferentially with respect to the center burner. A quencher, located below the elongated roasting furnace body, has a top end connected to a bottom end of the elongated roasting furnace body. Quencher nozzles are located adjacent the top end of the quencher.

Atomizing roasting furnace for producing ferrite raw material powder

Soft ferrite raw material powder, its sintered body, and their

A method for controlling an iron ore pelletizing and pellet processing operation by evaluating the results of the on-stream analysis of the apparent specific gravity or apparent density distributions of the dry and fired pellet samples which permits the operator of the process to determine if any changes in the process control factors are required in order to impart into the fired pellets an apparent specific gravity or apparent density distribution optimized therefor as the fired pellets are used as a blast furnace charge composition. The method includes the use of an apparent specific gravity measuring step wherein a pellet process stream is periodically sampled and the pellet samples are presented in sequence to a weight measurement unit capable of producing an electric signal proportional to the weight of each sample, from which it proceeds into a volume measurement unit photoelectrically responsive thereto to produce an electric signal proportional to the volume of the sample. A computer is provided in response to the electric signals to compute the apparent specific gravity of each of the samples. This permits a rapid and accurate record of sample analysis to be maintained for the effective control of the process factors.

Iron ore pellet process control

A material for sintering capable of emitting a lesser amount of nitrogen oxide during sintering thereof to produce a sintered ore. It is composed of finely divided coke concentrated within a predetermined range in an outer shell layer of agglomerated particles.

Material for sintering emitting a lesser amount of nitrogen oxide and a

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Yokohama, Japan

Kaoru Ito