摘要:
A through-hole wiring board comprising through-holes passing through a substrate and filled with an electroconductive material; copper toil lands and copper foil circuits formed on surfaces of the substrate; insulating layers formed on the copper toil circuits and between necessary portions of the copper foil lands and the copper foil circuits; and printed circuits (jumper circuits) formed by another electroconductive material having a different composition from that filling the through-holes on a part of the copper foil circuits, and the copper foil lands and the insulating layers except for unnecessary portions for electroconductivity; wherein the printed circuits and ends of the through-holes are electrically connected with an electroconductive material having a different composition from that filling the through-holes, permits easy formation of an electrical connection of the through-holes, has a high reliability on connection and is suitable for industrial production.
摘要:
An electroconductive paste for forming an electric circuit which is low in resistivity, high in electroconductivity and minimized in change of resistivity even after a thermal shock test and/or a humidity and DC applied test, can be obtained by using a composite electroconductive powder comprising a flake-like electroconductive powder made of a material such as silver, a silver alloy, a silver-coated copper powder or a silver-coated copper alloy powder and an unsteady-shaped electroconductive powder such as a reduced silver powder. Also, by using a composite electroconductive powder comprising an electroconductive powder having an aspect ratio of 6 or greater and an electroconductive powder having an aspect ratio of 5 or less, there can be obtained an electroconductive paste which is low in resistivity, high in electroconductivity, minimized in change of resistivity even after a thermal shock test and/or a humidity and DC applied test, and capable of improving probability of contact between the electroconductive powder particles, elevating electroconductivity of the electric circuit, and also raising electroconductivity especially when a circuit is printed on a sheet-like substrate and the printed circuit is pressed. The electric circuit formed on the surface of a substrate by using such an electroconductive paste is low in resistivity, high in electroconductivity and also excellent in migration resistance.
摘要:
Electroconductive composite metal powders comprising flat non-noble metal powders, each covered with a noble metal in an amount of 2 to 30% by weight in average based on the weight of the non-noble metal powders, on 50% or more in average of the whole surface area of the non-noble metal powders, interposing a layer of a mixture of the non-noble metal and noble metal between each non-noble metal powder and a noble metal covering layer, are suitable for providing an electroconductive paste after mixing with a binder, said paste showing excellent electroconductivity and prevention of migration.
摘要:
Electroconductive composite metal powders comprising flat non-noble metal powders, each covered with a noble metal in an amount of 2 to 30% by weight in average based on the weight of the non-noble metal powders, on 50% or more in average of the whole surface area of the non-noble metal powders, interposing a layer of a mixture of the non-noble metal and noble metal between each non-noble metal powder and a noble metal covering layer, are suitable for providing an electroconductive paste after mixing with a binder, said paste showing excellent electroconductivity and prevention of migration.
摘要:
There is provided a method of controlling a tape processing apparatus where braille is embossed at one side in the width direction of a tape with an embossing unit arranged at the one side. The method includes: an embossing-position defining step of defining a braille embossing position in the width direction of the tape; an embossing-data generating step of generating embossing data based on input information and the embossing position; and a braille embossing step of embossing braille on the tape based on the generated embossing data. In the embossing-data generating step, when the embossing position is arranged at one side in the width direction on the same side as the embossing unit, the embossing data is generated for forward embossing. While, when the embossing position is arranged at the other side in the width direction opposite to the embossing unit, the embossing data is generated for reverse embossing.
摘要:
An electric-powered tool comprises: a housing; and a brush motor contained in the housing, having: brush holders, each of brush holders holding a carbon brush; and brush terminals, made of an electrical conductive and elastic material having at least one blade portion, a palm portion, and an arm portion, for providing electrical connection thereof to the brushes through the brush holder by catching and griping the brush holder by the blade and the palm portions, the arm portion extending from the palm portion to an end where a fixing portion is provided, each of the brush terminals being fixed by the fixing portion with a positional offset to develop a contact pressure between the palm portion and the brush holder. Further, the arm portion is further extending over the fixing portion to form a connecting portion. On the other hand, one end of a field coil is connected to a connector. Thus, the brush holder is connected to the field coil through the connection portion and the connector.
摘要:
An embossing control method used in a braille-embossing apparatus includes an embossing head that embosses a braille string on a tape fed along a tape-conveying path, the braille string being embossed in an area biased to one of upper and lower sides of the tape along the width of the tape without changing the upper and lower direction of the braille string. The embossing control method includes the steps of designating the area biased to one of the upper and lower sides of the tape along the width of the tape as a braille-embossing area in which braille embossing is to be performed and embossing the braille string in the designated braille-embossing area.
摘要:
A gear driving mechanism for driving a power cam, etc. for a tape recorder, in which a power cam driving working elements by its normal rotation is driven by a motor and the rotation direction of the motor is reversed for the purpose of loading, eject, etc. The mechanism is so constructed that a pivoting gear pivoting depending on the rotation direction of the motor is disposed at the motor side; a normal and a reverse rotation gear engaging with each other is disposed at the gear side; the pivoting gear at the motor side is engaged with one of the normal and the reverse rotation gear when the motor rotates in the normal direction, and with the other when it is pivoted by the reverse of the rotation of the motor.
摘要:
A loading and ejection mechanism includes an inversion gear rotated by a motor in the opposite directions, an eject plate having a rack engageable with the inversion gear, and a mechanism to bring the rack into engagement with the inversion gear, so that the eject plate is moved back and forth by rotation of the inversion gear during loading and ejection so as to move a pack guide up and down and move an eject arm back and forth.
摘要:
A disclosed molecular communication system includes a molecular transmitter configured to transmit an information molecule in which prescribed information is encoded, a molecular receiver configured to receive the information molecule, and a molecular capsule configured to carry the information molecule from the molecular transmitter to the molecular receiver. Each of the molecular transmitter, the molecular receiver, and the molecular capsule has an artificial cell membrane in which at least one kind of molecular switch is embedded, the molecular switch being responsive to an external input signal so as to control association and separation between the molecular transmitter and the molecular capsule, and association and separation between the molecular capsule and the molecular receiver, upon application of the external input signal.