摘要:
An optical deflection device includes a rotor unit having a rotary polygon mirror and a magnet, a dynamic pressure bearing having a rotary bearing member rotatably supporting the rotor unit and a stationary bearing member, and a stator unit having a base member for supporting the stationary bearing member and a magnet coil for driving the rotary unit in cooperation with the magnet. The optical deflection device further includes a stabilizing member for rectifying and stabilizing airflow caused by the rotation of the rotary polygon mirror, which is mounted on the top of the base member in such a way that the stabilizing member is located close to the mirror surface on the outer periphery of the rotary polygon mirror.
摘要:
An optical deflection device having a rotary body that is fixed on a bearing and is structured rotatably by a magnet arranged to face a coil provided on a base side, wherein the rotary body is made of a magnet and a polygon mirror is fixed on the rotary body.
摘要:
A light-beam deflecting apparatus is provided in which a polygon mirror is pushed against a flange to hold it stationary. The light-beam deflecting apparatus includes a base member; a polygon mirror rotatable with respect to the base member; a flange contacting the polygon mirror to hold the polygon mirror; and a pushing member to push the polygon mirror against the flange. One or both of contacting surfaces of the polygon mirror and the flange is/are finished to a surface roughness of Ry, which fulfills a first formula of Ry>3 &mgr;m or a second formula of 3 &mgr;m≦Ry≦20 &mgr;m.
摘要翻译:提供了一种光束偏转装置,其中将多面镜推向凸缘以保持其固定。 光束偏转装置包括:基座部件; 相对于基座构件可旋转的多面镜; 接触多面镜以保持多面镜的凸缘; 以及将多面镜推向凸缘的推动构件。 多面镜和凸缘的接触表面中的一个或两个被完成为Ry的表面粗糙度,其满足Ry>3μm的第一公式或3μm的第二公式<= Ry <=20μm。
摘要:
An optical deflection apparatus includes: a base member; a coil fixed to the base member; and a rotor unit rotatable to the base member, having a bearing member, a rotating body provided on the bearing member, having reflection surfaces, and a magnet provided on the rotating body in a position facing the coil. Either the magnet and the rotating body or the bearing member and the rotating body are adhered together by an adhesive agent whose Young's modulus after hardening is not more than 100 N/mm2.
摘要翻译:光学偏转装置包括:基座部件; 固定到所述基座构件的线圈; 以及转子单元,其能够旋转到所述基座构件,具有轴承构件,设置在所述轴承构件上的旋转体,具有反射面,以及设置在所述旋转体上的面向所述线圈的位置的磁体。 磁体和旋转体或轴承构件和旋转体之间的粘合剂粘合在一起,其粘合剂的硬化后的杨氏模量不大于100N / mm 2。
摘要:
There is described a light beam deflection apparatus in which the distortion of the polygon mirror is reduced, and the mounting accuracy of the polygon mirror is improved. The light beam deflection apparatus includes a base plate, a coil being stationary relative to the base plate and a mirror unit being rotatable with respect to the base plate. The mirror unit includes a polygon mirror, a rotating disk to mount the polygon mirror, a rotating yoke fixed to the rotating disk, a magnet attached to the rotating yoke and located opposite the coil and a buffer member inserted into a gap between the polygon mirror and the rotating yoke.
摘要:
One objective of the present invention is to determine a location for a relay terminal in a radio network, without preparatory surveying a radio status, and to arrange the relay terminal at the location. Another objective is to provide a method for retrieving the arranged relay terminal. When a relay terminal is to be arranged, the relay terminal transmits a survey packet to examine the quality of communication with a communication terminal or other relay terminal. Where a location is appropriate, the relay terminal gives a notice. The arranged terminal relays communication. Further, when the relay terminal is to be retrieved, the relay terminal carried by a user transmits a retrieval packet to the arranged relay terminal, which notifies the user of its presence by light, sounds, or returning a packet. In this manner, a single relay terminal provides functions of arrangement, relay and retrieval.
摘要:
A voice communication system, which is connected to a LAN to which communication terminals are connected and to a public network to which telephones are connected, is provided with a communication server between the LAN and public network having different protocols from each other. The communication server enables a voice communication between a telephone on the public network and a communication terminal connected to the LAN by performing processing similar to that for a voice communication between two communication terminals connected to the LAN. The communication server determines whether an address of the other party inputted by a user is a communication terminal address or a telephone number, and transmits a voice communication request to a communication terminal of the other party when the address is a communication terminal address. When the address is a telephone number, the user acquires the communication terminal address of the communication server, and transmits a voice communication request to the communication server. Thereafter, the voice communication processing is performed through the communication server.
摘要:
Disclosed is a glide head for a magnetic disk that has a high sensitivity for efficiently transmitting a vibration due to a defect of a magnetic disk to piezoelectric element and the like and has high abrasion resistance and a long service life. The glide head is resiliently held at an end of a suspension arm through a flexure and has a slider, a load point of which a pressing force from the suspension arm is applied to through a pivot disposed on the flexure. The slider comprises two sliding rails that protrude from a bottom surface of the slider, extend from a leading end of the slider to a trailing end of the slider, parallel to and at a distance from each other, and have near the trailing end of the slider a rear edge that works as a sensor for detecting the defect of the magnetic disk. Each sliding rail has an upstream floating surface positioned within a region from the slider leading end to the load point and a downstream floating surface within a region from the load point to the slider trailing end so that the slider has a floating pitch angle from 140 to 380 μrad. A length of the upstream floating surface is preferably from 0.67 to 0.91 as expressed by a ratio to the total floating surface length.
摘要:
A light beam deflecting device having therein a rotor portion fixed on an outer circumference of a bearing, a polygon mirror stuck and fixed on a supporting section of the rotor portion and an elastic material for pressing and holding the polygon mirror on the supporting section, wherein the rotor portion has a cylindrical portion fixed on the outer circumference of the bearing, the supporting section and a disc-shaped flange portion provided on an end portion of the cylindrical portion, and a clearance is provided between an inner circumference of the cylinder portion on the end portion side where the flange portion is provided and an outer circumference of the bearing.
摘要:
On ad hoc networks in which connection relationships among communication terminals constantly change, the processing load increases when authentication is performed each time a connection relationship changes. According to this invention, when communication terminals possess the same common key, mutual authentication is conducted with that common key, and when communication terminals do not possess the same common key, mutual authentication is conducted with a public key. Communication terminals that conducted mutual authentication exchange and retain a common key that they selected and common keys received from other communication terminals. When neither communication terminal possesses a common key at authentication, one terminal creates a common key and distributes it to the other terminal, and when one terminal has a common key it creates that common key and distributes it to the other terminal. Further, a common key possessed by a communication terminal corresponding to a relay node is broadcast periodically.