Seiko Precision Inc.

Canon Kabushiki Kaisha

Hitachi, Ltd.

Resonac Corporation

Nec Compound Semiconductor Devices, Ltd.

Akihiro Ito

Akira Yasuda

Koji Sonoda

Naoki Utsunomiya

Mitsuru Suzuki

Hiroyuki Kumazaki

Masato Tanaka

Shigeru Yanagisawa

Masami Aizawa

Kazuo Akimoto

Shigeru Tagami

Junichi Shimizu

Miyoshi Tanikawa

Michiaki Yajima

Mika Kobune

Yasufumi Naoi

Masami Yamamoto

Masaki Tanaka

Takahiro Ikabata

Shinji Morinaga

Shuichi Kawaguchi

Mikishige Sugasa

Tetsuya Iwamoto

A sheet conveyance apparatus includes a first skew correcting portion, a second skew correcting portion, an acquisition unit, a control unit. The first skew correcting portion corrects skew of a sheet by abutting a leading edge of the sheet against the first roller pair to form a bend in the sheet. The second skew correcting portion corrects skew of a sheet by conveying the sheet with a turning motion. When a first sheet with a length of a first length is conveyed, the control unit corrects the skew of the first sheet by the second skew correcting portion. When a second sheet with a length of a second length longer than the first length is conveyed, the control unit corrects the skew of the second sheet by the first skew correcting portion, and configured not to correct the skew of the second sheet by the second skew correcting portion.

Sheet conveyance apparatus and image forming apparatus

A heat conduction sheet, includes at least one kind of graphite particle (A) selected from the group consisting of scale-like particles, ellipsoidal particles and rod-like particles; a polymer (B) having an isobutylene structure; an ethylene-propylene copolymer (C); and an ethylene octene elastomer (D), in which, in a case of scale-like particles, a plane direction of the particle is oriented in a thickness direction of the heat conduction sheet, and in a case of ellipsoidal particles or rod-like particles, a long axis direction of the particle is oriented in the thickness direction of the heat conduction sheet.

Heat conduction sheet, method of manufacturing heat conduction sheet, and heat dissipating device

A sheet discharging apparatus includes a discharge portion discharging a sheet in a discharge direction; a sheet supporting portion including a support surface which supports a lower surface of the sheet discharged from the discharge portion; and a conductive portion which is electrically conductive and connected to a ground potential. The conductive portion is provided at the support surface.

Sheet discharging apparatus and image reading apparatus

An electromagnetic actuator includes: a coil for excitation; a stator excited with different magnetic poles by energization of the coil; a rotor magnetized with the different magnetic poles in accordance with a circumferential direction, and rotated by a magnetic force generating between the rotor and the stator; and an outputting member rotated in conjunction with the rotor and outputting rotational movement of the rotor to a first blade and a second blade. The outputting member is provided with a fitting hole press-fitted onto the rotor.

Actuator and blade drive device for camera

An electromagnetic actuator includes; a coil for excitation; a stator excited with different magnetic poles by energization of the coil; a rotor magnetized with different magnetic poles in a circumferential direction thereof, and rotated by a magnetic force generated between the rotor and the stator; and an outputting member rotated in conjunction with the rotor and outputting rotational movement of the rotor to a first blade and a second blade. The rotor and the outputting member are jointed by welding and a welding portion of the rotor lies in a boundary of the magnetic poles thereof.

An actuator includes: a coil for excitation; a stator excited with different magnetic poles by energization of the coil; a rotor magnetized with different magnetic poles in a circumferential direction, and rotated by magnetic force generating between the rotor and the stator; and an outputting member rotated in conjunction with the rotor and outputting rotational movement of the rotor to a member. The outputting member fits onto the rotor, and the rotor has at least one of a recess portion and a projection portion at a fitting surface of the rotor. The outputting member is jointed with the rotor so as to have a shape corresponding to the at least one of the recess portion and the projection portion by welding.

Actuator, shutter driving device for camera and method of manufacturing actuator

In a shutter drive device for a camera, the device including: a plate having an aperture; a shutter blade provided in the plate, and for opening and closing the aperture; and an driving source provided in the plate, and for driving the shutter blade. The driving source includes: a rotor magnetized with plural magnetic poles in a circumferential direction, and rotatable about an axis thereof; a stator generating magnetic force against the rotor; and a coil provided in the stator and for exciting the stator. The rotor has an arm portion extending outwardly in a direction perpendicular to the axis of the rotor, and a pin portion engaging with the shutter blade and provided in the arm portion to stand. The rotor, the arm portion and the pin portion are disposed within a thickness of the coil in the axis direction.

Shutter drive device for camera

The rotational torque of an electromagnetic actuator having a stator and rotor, such as a stepping motor, is increased. The electromagnetic actuator includes a rotor () having multiple magnetic poles (Nr, Nr, Nr, Nr, Nr, Sr, Sr, Sr, Sr, Sr) on a circumferential surface () and a plurality of stators () in an electromagnet form. The stator () has a pair of magnetic poles () facing the circumferential surface () of the rotor (), and an auxiliary yoke () made of a soft magnetic material member extending in a circumferential direction (A) over an angular range (&#x3b3;) larger than a spread angle (&#x3b1;) of the magnetic poles (Nr, Sr) of the rotor () in the circumferential direction (A) is provided between the pair of magnetic poles ().

Electromagnetic actuator

In a system of the present invention in which a file ID is defined for each file, upon receiving a request for accessing a file specifying a file ID from a user, a file server refers to a file management table to obtain a logical disk ID for accessing the file. The file server then refers to a logical disk management table to obtain an I/O path corresponding to the logical disk ID, and accesses a physical disk device by use of the obtained I/O path. When a fault has occurred in an operational I/O path, a file server rewrites the logical disk management tables in all nodes to change the I/O path. This reduces the time taken to switch I/O paths, and hiding the process of switching the I/O paths from the user.

File system for creating switched logical I/O paths for fault recovery

To provide a rotor magnet which is small in size and provided with high magnetic energy, a rotor magnet is formed by adding a SmFeN magnetic powder to a binder such as a polyaxnide. The SmFeN magnetic powder is provided in a size of about one-tenth that of an NdFeB magnetic powder. Therefore, the density of the magnetic powder in the magnet can be made uniform. Accordingly, there is not any dispersion of the magnetic poles when a number of poles are magnetized and the magnet can be made smaller since the maximum energy product of the magnet is higher than that of an SmCo series magnet.

Rotor magnet, motor and stepping motor

A wavelength stabilizing unit includes a wavelength filter and an optical detector which are mounted on a substrate and housed in a casing The optical detector includes a first photoelectric conversion element which directly receives an emitted light from an end portion (emitting point ) of an optical fiber guided into the casing and converts it into an electric signal A, and a second photoelectric conversion element , which receives light passed through the wavelength filter and converts it into an electric signal B. The electric signals A and B are supplied to an operation circuit The wavelength filter has side faces, which are machined such that they do not cross a straight line connecting the emitting point and an edge of an incident surface of the wavelength filter.

Wavelength stabilizing unit and wavelength stabilized laser module

A shaped plastic magnet comprising a shaped body obtained by molding a mixture of an SmFeN magnetic powder with a resin binder into a desired shape, where the surface of the shaped body is subjected to a coating treatment using a phosphate. Preferably, the coating treatment is performed by using a paint containing a phosphate. The shaped plastic magnet may be used as a rotor to be incorporated in motors. The product is highly resistant against corrosion, and provides extended life to motor rotors and the like.

Method of making a shaped plastic magnet

An illustrative embodiment of the present invention disclosed herein includes a file server having a file management table to obtain a logical disk ID for accessing files. A logical disk management table is consulted to obtain an I/O path corresponding to the logical disk ID, thus accessing the physical device. When a fault occurs along an I/O path, the appropriate tables are altered accordingly to reflect a new I/O path.

A rocking motor comprises a coil wound around a hollow coil bobbin. A rotor is rotatably mounted at a position close to an end portion of the coil bobbin. The rotor has a center shaft and a permanent magnet and is magnetized with two poles such that the positions of the poles are located close to the coil and the magnetization angle is greater than 90 degrees but less than 180 degrees. The positions of the poles of the rotor and the coil are adjacent to one another so that a rotary torque can be efficiently obtained by a magnetic force generated by the coil. The rocking motor can generate a high power output with a relatively low power supply and its operational performance is not adversely affected by an external magnetic field.

Growing community of inventors

Chiba, Japan

Akihiro Ito