摘要:
In a pickup carriage transporting mechanism for a disk record player, such as a video disk player, a stopper made of a plate like member having a U-shaped recess is provided to correct the attitude of the carriage. The carriage is arranged to move left and right so that the stylus of the pickup moves linearly to pick up information from a disk on a turntable. Since the carriage is pulled at its front end by a loop-like wire to effect the leftward and rightward movement, the carriage is apt to be inclined from a desired angle. When the carriage is returned to its resting position, the front wall portion of the carriage will be partially received in the U-shaped recess having a width which is equal to or slightly greater than the thickness of the front wall portion so that inclination of the carriage is forcibly corrected by the stopper. Attitude correction will provide smooth loading and unloading of a disk because of accurate alignment of a plurality of sections of a guide rail used for insertion and removal of a disk casing. A nonthreaded nut made of an elastic synthetic resin may be used to minimize the play of the guide roller.
摘要:
A case for a rotary recording medium comprises a jacket having a space for accommodating a rotary recording medium and an elongated opening on one end side of the jacket through which the rotary recording medium can enter and leave the jacket, and a lid member for closing the opening of the jacket. The jacket has projecting parts at the opening, at positions crossing the opening.
摘要:
A reproducing apparatus reproduces a disc-shaped recording medium which is accommodated within a case. The case comprises a jacket which has a space for accommodating the disc-shaped recording medium and an opening for allowing the disc-shaped recording medium to go in and out of the jacket, and a lid member inserted through the opening of the jacket for closing the opening of the jacket. The reproducing apparatus comprises an inserting opening part through which the case is inserted into the reproducing apparatus, a turntable for rotating the disc-shaped recording medium, lid member locking mechanism and disc-shaped recording medium clamping mechanism respectively provided at the innermost part of the reproducing apparatus opposite to the inserting opening with respect to the turntable, jacket opening enlarging mechanism provided in the vicinity of the inserting opening, moving over the turntable between the position in the vicinity of the inserting opening and the innermost part of the reproducing apparatus, accompanied by operation of inserting the case into and pulling the same from the reproducing apparatus, and an elevating mechanism for moving a member for supporting the disc-shaped recording medium upwards and downwards independent of the turntable.
摘要:
A rotary recording medium reproducing apparatus comprises a turntable onto which a rotary recording medium is placed, a motor for rotating the turntable, a reproducing transducer for reproducing a recorded signal from the rotary recording medium placed onto the turntable, and a clamping mechanism for clamping the rotary recording medium on the turntable. The clamping device comprises a support structure capable of unitarily rotating with the turntable and moving up and down independently with the turntable, for supporting a part in the vicinity of a center hole of the rotary recording medium when the support structure is in a raised position, an elevating mechanism for moving the support structure upwards and downwards, clamping fingers provided on the support structure for clamping the rotary recording medium on the turntable at a part in the vicinity of the center hole of the rotary recording medium when the clamping fingers are operated, where the clamping fingers are supported at positions deviated from their centers of gravity so as to rotate towards a clamping releasing direction, and a receiving and stopping member for rotating the clamping fingers towards a clamping direction opposite to the clamping releasing direction by receiving and stopping parts of the clamping fingers when the support structure is lowered. The support structure is separated from both the elevating mechanism and the receiving and stopping member when the support structure is lowered. Further, the clamping fingers are applied with a rotational force in the clamping direction due to the weight of the support structure, to press the part of the rotary recording medium in the vicinity of the center hole thereof against the turntable.
摘要:
A method for manufacturing a Nb.sub.3 Sn superconductor comprising the steps of preparing a composite conductor element which is composed of Cu-Sn alloy matrix and one or more Nb cores inserted and disposed in said matrix, if necessary sheathing the outer surface of the Cu-Sn alloy matrix with copper, subjecting the composite conductor element to a diameter reducing working until the predetermined diameter is reached, then forming an Sn-plating layer on the outer surface of the reduced diameter composite conductor element and thereafter subjecting the Sn-plated composite conductor element to diffusion heat treatment so that an intermetallic compound of Nb.sub.3 Sn is formed, and a method for manufacturing hollow superconducting magnet off an intermetallic compound type comprising the steps of extending a plurality of multicore superconductors together with thin tapes of a low temperature melting metal along grooves of a hollow conductor carrier, winding the superconductor assembly around a magnet reel and then heating up the superconducting magnet assembly to melt the thin tape of low temperature melting metal so that the multicore superconductors are secured to the hollow conductor carrier.
摘要:
The present invention provides a welding torch weaving device having a first link with an elongated slot and driven by a drive source to make an arc shaped movement at one end thereof, a first movable shaft fitted or secured within the elongated slot in the first link, a second link having one end thereof pivoted in place on the first link and having a second elongated slot, a second movable shaft fitted within the second elongated slot in the second link, a third link having one end thereof pivoted in place on the other end of the second link and a fourth link having one end thereof pivoted in place on the other end of the third link and the other end thereof pivoted on a fixed pivot shaft. A weaving arm is disposed in place on the third link for mounting a welding torch.
摘要:
An electrophotographic process involving the repeated cycles of a developing step for developing an electrostatic latent image formed on a latent image carrying member with a liquid developer, a transfer step for transferring the thus obtained visible image from said latent image carrying member onto another member, and a cleaning step for subsequently cleaning the surface of said latent image carrying member, comprising the use of an elastic rotary member composed of an electroconductive rigid core member, an electroconductive porous elastic member capable of retaining a liquid therein and provided around said core member, and a liquid-permeable insulating flexible member of a thickness in the range of 20 to 400 microns provided to surround the outer periphery of said elastic member, said elastic rotary member being maintained in pressure contact with said latent image carrying member, whereby said developing step is achieved by the liquid developer squeezed out from said elastic rotary member and the excessive liquid developer present on said latent image carrying member is recovered therefrom by absorption upon recovery of said elastic rotary member from the compressed state thereof.
摘要:
In developing an electrostatic image by supplying developing liquid to an electrostatic image bearing surface, the developing liquid is brought into contact with the image bearing surface to effect development of the electrostatic image, and then a developing member is urged against the image bearing surface to thereby effect supply of the developing liquid and collection of excess developing liquid by the developing member and thereby effect further development of the electrostatic image.
摘要:
An automatic record playing apparatus comprises a rotating member adapted to rotate together with a tone arm and having a projection thereon, a rotation driving member rotated forward and backward over a predetermined range during a predetermined operational period by a rotating force of a turntable, and a pushing means provided on the rotation driving member and adapted to push the projection to rotate the rotating member for returning the tone arm unitarily therewith toward outside of a record disc as the rotation driving member effects initial forward rotation. The pushing means having a first portion for pushing the projection in one rotational direction of the rotating member, and a second portion for pushing elastically the projection in the direction other than the rotational direction of the rotating member. The rotating member being rotated in the result, that the projection is pushed by the first portion of the pushing means in a state where unnecessary revolution thereof is obstructed by the second portion.
摘要:
An electrically insulating prepreg which comprises a resin composition of an alicyclic epoxy compound prepared by the expoxidation of an alkadiene alcohol ester of an alicyclic polybasic carboxylic acid, a latent curing agent, and a solid substrate, wherein said resin composition, once it has been applied to the substrate, is in the B-stage cured state and is thereby acetone soluble, thermoplastic and nontacky.