Seiko Epson Corporation

Nidec Sankyo Corporation

Sankyo Seiki Mfg. Co., Ltd

Ablecom Technology Incorporated

Noboru Otsuki

Kenichiro Arai

Hiroki Kuratani

Yuji Fujita

Masashi Takahashi

Yuji Aoki

Takeshi Sue

Toshiaki Koike

Seiji Kimura

Yoshiki Kinoshita

Hideki Kanebako

Hiroshi Nose

Daisuke Higuchi

Hiroshi Narita

Toshifumi Tsuruta

Toshio Yamamoto

Keigo Ejiri

Mitsuhiko Nebashi

Makoto Akabane

Akihito Wada

Keiji Murakoshi

Yoshifusa Miyasaka

Tsuneo Sato

Dongning Zhang

Takashi Ikegami

Makoto Ikegami

A pump device is provided. In the pump device, in a first wall portion of an insulator configured to surround an inner partition wall portion arranged on an inner peripheral side of a stator core and to prevent a winding of a driving coil from collapsing, there is provided a first notch cut out from an end surface on a Z2 direction side of the first wall portion toward a Z1 direction side. And, in a second wall portion of an insulator configured to surround an inner partition wall portion and to prevent a winding of a driving coil from collapsing, there is provided a second notch cut out from an end surface on a Z1 direction side of the second wall portion toward a Z2 direction side.

Pump device

A pump device is provided. In the pump device, a bottom portion of a case body with a suction port formed therein is provided with a through-hole through which a fluid sucked through the suction port passes, and the case body is provided with a shaft holding portion holding the lower end of the fixed shaft and a plurality of connection portions disposed with a space interposed therebetween in the circumferential direction of the rotor so as to surround the through-hole and connecting the shaft holding portion and the bottom portion. The upper end side of the connection portion is provided with a protrusion protruding upward beyond the upper end surface of the shaft holding portion, and at least one of the protrusions is a rotation preventing portion that prevents rotation of the thrust bearing in the circumferential direction of the rotor.

A cooling device having a centrifugal pump directly mounted on a radiator. An annular seal member is disposed between the bottom portion of the case body of the centrifugal pump and the side surface of the tank chamber of the radiator, and the annular seal member is used for preventing the cooling medium leakage via a space between the centrifugal pump and the tank chamber. The cylindrical portion of the case body and the annular seal member are overlapped with each other in the axial direction of the rotation center shaft of the motor that drives the centrifugal pump, in order that the cylindrical portion can receive at least a part of the reaction force of the annular seal member crushed between the case body and the tank chamber, and thereby the bottom portion of the case body of the centrifugal pump is prevented from deformation.

Cooling device

A detachable body for a printing apparatus enables positioning a board for electrical connection to a printing apparatus, while also reducing manufacturing cost. The detachable body for a printing apparatus includes a case that is mounted to and detached from a printing apparatus that performs printing on a sheet, and a board that is attached to an attachment surface that is a surface of the case, and that is electrically connected to the printing apparatus by coming into contact with detachable body-side contacts provided on the printing apparatus when the case is mounted to the printing apparatus. The attachment surface of the case is provided with an attaching portion to which the board is attached. The attaching portion surrounds the board and positions the board in a direction along the attachment surface of the case by coming into contact with peripheral edges of the board.

Detachable body for printing apparatus

A lens driving apparatus is disclosed. The lends driving apparatus may include a movable body holding lenses, a fixed body in which the movable body is mounted and movably along the lens optical axis direction, and a drive mechanism that moves the movable body in the lens optical axis direction. The drive mechanism may be equipped with a coil that is held by the movable body or the fixed body, a magnet that is held by the other body of the movable body and the fixed boy, and a regulatory means that regulates the movement of the movable body which is induced by an electromagnetic force generated when current is passed through the coil. The coil may be opposed to the magnet in the lens optical direction.

Lens driving apparatus

A lens driving apparatus may include a movable body holding lenses; a support body for supporting said movable body to move in the optical axis direction of said lenses; and a drive mechanism for driving said movable body in the optical axis direction; wherein said movable body is provided with an extension portion that is extended toward the outer periphery, and a moving path and a movement-stopping portion are formed to at least a member of said drive mechanism mounted on the support body or to said support body, said moving path allowing said extension portion to move in the optical axis direction when said movable body is moved in the optical axis direction and said movement-stopping portion regulating the moving range of said movable body as said extension portion makes contact with said movement-stopping portion.

In the lens drive unit; the position retaining parts are advanced by rotating the position retaining member, which is held in the case body in such a manner as to become rotatable, in the R direction so that the position retaining parts are positioned just under the protrusion parts of the movable lens body, and eventually the movable lens body can be retained at the middle position. Furthermore, the through-holes are advanced by rotating the position retaining member in the R direction so that the through-holes are positioned just under the protrusion parts of the movable lens body, and eventually the protrusion parts loosely get fitted into the through-holes of the position retaining member to enable the body tube holder to move downward.

Lens drive unit

A paper feeding apparatus includes a housing accommodating a plurality of papers, a pickup unit, a rotation transmitting member and a torque transmitting member. The pickup unit has a pickup lever, a driving shaft rotatably supporting the pickup lever, and a pickup roller rotatably provided on an end of the pickup lever. The rotation transmitting member transmits a rotating force of the driving shaft to the pickup roller. The torque transmitting member is provided between the driving shaft and the pickup lever. The torque transmitting member selectively rotates one of the pickup lever or the pickup roller depending on a torque acting on the driving shaft. The pickup roller is rotated while being pressed against the papers, thereby feeding the papers one by one out of the housing.

Paper feeding apparatus

A printer and control method to control the operation of a printer to assure consistent print quality regardless of the paper length. A paper transportation control unitand ASF control unitdrive a paper feed rollerand main paper transportation rollerfor feeding a sheet S of print paper from the ASFupon a paper transportation path and for advancing the sheet S of print paper on the paper transportation path in a first direction until the sheet S of print paper is discharged from the ASF, and then reversing the direction of travel of the sheet of paper S on the paper transportation path to convey the sheet S upon a reverse paper transportation pathdisposed below the ASFwhile positioning the sheet S to the print headfor printing by the print head

Printer and printer control method

A lens driving apparatus includes a lens holder and a driver for providing linear motion to the lens holder along an optical axis of the lens. The driver includes an electromagnetic mechanism, provided at the outer circumference of the lens holder in an enclosing manner, for generating a torque around the optical axis; and a switching mechanism for switching the generated torque to a linear driving force along the optical axis so as to linearly move the lens holders. The driver surrounds the lens holder along the outer circumference to allow a smaller sized lens driving apparatus than that where the lens holder is at a side of the lens driving apparatus. In addition, the switching mechanism prevents the lens holder from moving in the optical axial direction, when power is turned off or even when an external force is applied to the lens holder.

Lens driving apparatus, thin camera, and a cellular phone having a thin camera

A permanent magnet embedded motor including a rotor which is provided with a plurality of slits and a plurality of permanent magnets embedded into the slits and a stator which is provided with an iron core having a plurality of slots to which a coil is wound and is arranged to face the rotor via a gap. The slit includes a permanent magnet embedded part into which the permanent magnet is embedded in a direction perpendicular to the radial direction of the rotor and an 'L'-shaped air gap part integrally provided on both ends of the permanent magnet embedded part. An angle '&#x3b8;' for one pole of the rotor and an angle &#x201c;&#x3b8;&#x201d; of the &#x201c;L&#x201d;-shaped air gap part are set to be 0.1&#x2266;&#x3b8;&#x2266;0.3. Further, a radius &#x201c;R&#x201d; of a circumscribed circle of the rotor and a radius &#x201c;R&#x201d; for forming an outer peripheral face of the rotor at a portion of the &#x201c;L&#x201d;-shaped air gap part are preferably set to be 0.1&#x2266;(R&#x2212;R)/R&#x2266;0.3.

Permanent magnet embedded motor

Printer

A motor has a stator core having a plurality of salient poles and stator coils wound on the salient poles, respectively, each of the stator coils having a common side coil end part and a coil winding part. The common side coil end part of each of the stator coils extends radially outward from corresponding one of the coil winding parts into a region radially outside of the corresponding coil winding part of the corresponding stator coil. Then, the common side coil end part is bent to extend in the circumferential direction towards adjacent one of the salient poles in the circumferential direction, and connects electrically to a common side coil end part of adjacent one of the stator coils, wherein the common side coil end parts are joined to surround in a circular ring-shaped manner an entire outer circumference of the stator core.

Motor, motor stator and method for manufacturing the same

A head chip has a front face formed with nozzle orifices, and a rear face formed with at least one ink inlet. A damping chamber forming member is laminated on the rear face of the head chip. The damping chamber forming member has at least one damping chamber for dampening pressure fluctuation occurred therein, and an ink supply port for supplying ink from the damping chamber to the head chip.

Head unit in ink jet printer

A maintenance apparatus wipes the nozzle surface of a print head using a wiper having no ink adhering thereto. The maintenance apparatus has a wiper that moves in a direction towards and away from the plane of the nozzle surface of a print head that travels bidirectionally widthwise to the printing paper. A remover removes foreign matter on the wiper when the wiper is moved while in contact with the rake part of the remover.

Growing community of inventors

Nagano, Japan

Noboru Otsuki