Abstract: An interposition structure interposed between substrates and capable of guiding the insertion of a connection pin for electrically connecting the substrates to each other, whereby the connection pin can be inserted properly even in cases where the substrates to be connected or other members have a dimensional error caused during production thereof, a positioning error or the like. The interposition structure has an interposition body in which a through hole is formed such that connection pin inlet and outlet portions thereof each have an inner diameter gradually increasing in a direction from the inner part to the corresponding outer open end thereof, and also has a positioning protuberance provided on the underside of the interposition body.

Abstract: A cable connector includes a cable including a conductor, a contact connected to a tip part of the conductor, and a connector connected to the cable. The connector includes a terminal part including an insulator having a hole formed therein. The contact is pressed into the hole.

Abstract: A cable connecting structure includes a shroud adapted to be mounted on a panel carrying pins, the shroud having a shroud body enclosing the pins when the shroud is mounted on the panel and including a plurality of compartments, and a shielding member provided on the shroud body so as to cover an inner wall of the shroud body. The shielding members provide electromagnetic shielding so as to improve the electromagnetic compatibility of the connecting structure.

Abstract: A roll paper pulling load-buffering device enables smooth roll paper transportation and minimizes the space required for its installation in the printer. The load-buffering device has an arm 22a that moves a specified angle around the shaft 24 on which the roll paper turns. A roller 23 extends widthwise to the roll paper from the arm 22a at a point offset from the outside diameter of the roll. Paper pulled off the roll is draped around this roller 23. When a transportation roller is driven to advance paper from the roll by pulling from the end of the roll, tension applied to the paper causes the arm 22a to turn in one direction by way of the intervening roller 23. An urging means 25 such as a spring then urges the roller 23 and arm 22a in the opposite direction, maintaining even tension on both sides of the roller 23 and thereby enabling smooth roll paper transportation.

Abstract: A connector is electrically connected to a substrate in which a conductor pattern and electrodes at ends of the conductor pattern are provided on a surface of the substrate. The connector includes a plurality of contacts that are resiliently connectable to the electrodes of the substrate inserted in the connector. An insulator member contains the contacts arrayed therein. A slider unit is movably attached to the insulator member, the slider unit including a plurality of lugs that are connectable to respective edges of the contacts contained in the insulator member.

Abstract: A cable connector having a contact terminal member, a housing formed from a single sheet of metal having top, side wall and bottom portions so as to form a box enclosing the contact terminal member, a cable connector insertion port formed at a front end of the housing, and a plurality of integrated legs integrally formed with the housing and disposed so as to extend in a downward direction from side rear edges of the bottom portion of the housing, the integrated legs to be inserted in a plurality of holes formed on a printed circuit board, the connector having a front integrated leg integrally formed with the housing and disposed so as to extend in a downward direction from a bottom edge of the cable connector insertion port, the front integrated leg to be inserted in a hole formed on the printed circuit board so as to fixedly mount a front end of the connector on the printed circuit board.

Abstract: A press-fit pin for use with a printed circuit board assembly consisting of two opposed printed circuit boards, the press-fit pin having an upper first press-fit section and a lower second press-fit section. The first press-fit section and the second press-fit section are disposed so that the first press-fit section enters the first through-hole in the first printed circuit board before the second press-fit section enters the second through-hole in the second printed circuit board. As a result, the peaks of the forces required to press the first press-fit section and second press-fit section into place are staggered and do not coincide, resulting in a reduction in peak total force required and thus reducing the danger of bending the press-fit pin during insertion in the printed circuit boards.

Abstract: An interposition structure interposed between substrates and capable of guiding the insertion of a connection pin for electrically connecting the substrates to each other, whereby the connection pin can be inserted properly even in cases where the substrates to be connected or other members have a dimensional error caused during production thereof, a positioning error or the like. The interposition structure has an interposition body in which a through hole is formed such that connection pin inlet and outlet portions thereof each have an inner diameter gradually increasing in a direction from the inner part to the corresponding outer open end thereof, and also has a positioning protuberance provided on the underside of the interposition body.

Abstract: A thermal printer for a portable electronic device such as a receipt issuing machine is capable of increasing an angle at which thermal recording paper is wound on a platen roller while decreasing running load and without generating static electricity. The thermal printer includes a body frame formed from metal, a thermal head disposed on a bottom part of the body frame for printing paper and a platen roller for urging the paper against the thermal head. A paper guide for guiding the paper to a direction in which the paper is wound on the platen roller is integrally formed with the body frame. A bend-raise portion extending in a paper-width direction of the paper and contacting linearly to the paper while feeding is integrally formed at a part of the paper guide where the paper is inserted. The paper guide is formed in such a manner that it comes close to the platen roller with respect to the bottom of the body frame.

Abstract: An optical pickup includes a diffraction element for causing diffraction in a reflection beam from a disc. This diffraction element is divided into two of first and second regions. On four light receiving elements are converged respectively a first reflection beam from a first region and a second reflection light from a second region. A switch performs switching-over between four output signals individually taken from four light receiving elements and three output signals in total taken out by adding together two output signals of four output signals.

Abstract: An electric connector for interconnecting printed circuit boards including a plug and a jack. Each of the plug and the jack includes an insulating housing including an insulating base and a pair of parallel external walls standing on the front surface of the insulating base. The jack further includes an insulating internal wall standing on the front surface of the insulating base which is parallel to, and in the middle of, a pair of the parallel walls. One embodiment of the present invention is a row of parallel blade signal contacts and a leaf spring ground contact arranged on the outer and the inner surfaces of each parallel wall of the plug, respectively, and a row of parallel leaf spring signal contacts and a blade ground contact arranged on the inner surface of each parallel wall and on each surface of the internal insulating wall of the jack, respectively.

Abstract: A plug connector includes a plug housing made of an insulator material, a plurality of male signal terminals arranged in a plurality of columns and rows and fixed to the plug housing, and plate-shaped male conductors respectively having ground lead ends and fixed to the plug housing so that each male conductor is positioned between two adjacent rows formed by the male signal terminals. A corresponding jack connector forms an impedance matching type electrical connector together with the plug connector.

Abstract: A printer is provided comprising a carriage on which recording head is mounted. Drive mechanisms for moving carriage in reciprocating motions an encoder having openings provided contiguously in the circumferential direction at fixed intervals, attached thereto, and which rotates as carriage moves. A position detector is provided in proximity to the encoder for detecting the encoder's detection-target unit and generates timing pulses in response thereto. A shielding plate is attached to carriage for blocking the encoder from the position detector at the home position. A processor detects the home position for carriage based upon a timing pulse pause time.

Abstract: A plug-in connector includes a connector main body having contacts connected to a cable, and a housing accommodating the connector main body. Latch springs are respectively attached to first and second surfaces of the housing, and respectively have first engagement portions which engage, in a locked state, second engagement portions of a jack connector to be connected with the plug-in connector. An operating member, which cooperates with the latch springs, includes latch releasing portions respectively engaging with the latch springs and disengaging the latch springs from the second engagement portions when the plug-in connector is pulled whereby the plug-in connector is released from the locked state.

Abstract: A burnishing drill includes a cylindrical shank and a drill body connected to the shank. Drilling edges, first reaming edges and second reaming edges are formed on a first reduced diameter portion, a second reduced-diameter portion and a third reduced-diameter portion respectively located at a foremost end of the drill body. Each of the reaming edges is inclined with respect to the longitudinal axis of the drill at an angle which is set so as to be within a range of between 5.degree. and 30.degree.. During a boring operation using the drill, a hole is drilled by the drilling edges and the drilled hole is then worked by the first reaming edges and the second reaming edges to provide a smooth inner wall in the drilled hole. Since each of the reaming edges is formed to extend radially outward from the foremost end of the drill and incline axially in the rearward direction at a relatively small angle, the centering property can be greatly improved.

Abstract: A burnishing drill includes a cylindrical shank and a drill body connected to the shank. Drilling edges, reaming faces and reaming edges are formed on a first reduced-diameter portion, a second reduced-diameter portion and a third reduced-diameter portion located at a foremost end of the drill body respectively. The reaming faces which are located axially at backward positions of the drilling edges and the reaming edges extend radially outward from the foremost end of the drill and incline axially in the rearward direction, and also extend radially outward and incline in the rearward direction with respect of the rotational direction. Since an inner surface of the hole drilled and reamed by the drilling edges and the reaming edges can be further smoothed by the reaming faces, the surface roughness of the finished hole can be much improved.