Abstract:
In a manufacturing method of a printed circuit board comprising a process of coating insulative resin on a surface of a printed circuit board having a blind hole and a process of filling up the insulative resin in the blind hole, the printed circuit board coated with the insulative resin is kept in a low pressure atmosphere of 1.3 to 666 hPa, and then the insulative resin is hardened, so that the insulative resin is filled up in the blind hole appropriately.
Abstract:
Ink on a ink film 1 wound around a first supply reel 5, which is driven by a first DC motor 21, is transferred to an intermediate recording medium 7 wound around a second supply reel 8, which is driven by a first stepping motor 31, in a first heating section 500. While transferring the ink on the ink film 1 to the intermediate recording medium 7 in the first heating section 500, the ink is transferred with rewinding the ink film 1 and the intermediate recording medium 7 by the first supply reel 5 and the second supply reel 8 respectively.
Abstract:
A liquid crystal display has a liquid crystal layer, a first electrode substrate; and a second electrode substrate provided as facing the first substrate so that the liquid crystal layer is sandwiched by the first and the second substrates. At least either the first or the second substrate is a transparent substrate. At least either the first or the second substrate is provided with first electrode sections each having a first height and a plurality of second electrode sections each having a second height. The first height is higher than the second height by a predetermined height. Areas of the first electrode sections in total and that of the second electrode sections in total is equal to each other on at least either the first or the second substrate.
Abstract:
In a manufacturing method of a printed circuit board comprising a process of coating insulative thermosetting resin on a surface of a printed circuit board having a blind hole and a process of filling up the insulative thermosetting resin in the blind hole, the printed circuit board coated with the insulative thermosetting resin is kept in a low pressure atmosphere of 1.3 to 666 hPa, and then the insulative thermosetting resin is hardened, so that the insulative thermosetting resin is filled up in the blind hole appropriately.
Abstract:
An oscillator synchronization circuit in a television camera comprises a circuit for detecting incoming synchronizing signals from the outside, an oscillator capable of oscillating at a first frequency in the absence of the output from said detector circuit and oscillating in free-running at a second frequency sufficiently lower than said first frequency in response to the detector output, and trigger pulse shaping means for shaping trigger pulses from the external synchronizing signal and supplying the same to the oscillator. The oscillator performs free-running oscillation at the first frequency in the absence of an incoming external synchronizing signal and an output of the detector circuit and, in the presence of an external synchronizing signal, synchronizes with the external synchronizing signal and oscillates at the same frequency as that of the synchronizing signal, the free-running oscillation frequency being amply lowered by the output of the detector circuit, and, at the same time, the oscillator being triggered by the trigger pulse.
Abstract:
A video tape recording and/or reproducing apparatus comprises a rotating drum wrappingly contacted over a specific angular extent around the cylindrical surface thereof by a traveling recording tape. When a power failure occurs during recording/reproducing, tape tension is removed to eliminate a load on the rotating drum. This tension is completely removed by releasing the braking force on the reel disc on the tape transport side which produces the tape tension load.
Abstract:
A remote control system and apparatus for an automatic telephone answering and recording apparatus comprises: answering means operating with respect to incoming calls in the absence of the called party to close automatically a speaking circuit and transmit to the caller in each case a statement recorded beforehand; recording means for recording messages stated by callers; signal generating means operated by the manipulative pushing of the push buttons of a touch-tone telephone set or the operation of a specific signal generator to generate, as control signals, tone signals corresponding to the numerals from zero to nine of the push buttons; selection detection means operated by coincidence between a combined numeral group on the apparatus side previously set by combining numerals selected at will from the numerals from zero to nine and the combination of control signals successively generated by and transmitted from the signal generating means and operated when an individual control signal corresponds to any numeral of the combined numeral group; and control means for controlling the apparatus with respect to recording, playing back, rewinding, and other operations in accordance with the operation of the selection detection means.
Abstract:
Two lines normally connect an amplifier to a speaker. An electronic circuit connected between the lines senses an excessively high power surge energizing a relay switch to disconnect one of the lines. When the power surge is over, the relay switch is de-energized automatically restoring the normal connections to the speaker.
Abstract:
A recording and/or reproducing apparatus has a reel disc device of parallel double-clutch type, suitable for driving a take-up reel. This parallel double-clutch type reel disc device comprises an upper reel disc part for engaging a take-up reel and rotating it in a direction to take up a magnetic recording tape. An intermediate reel disc part is disposed below the upper reel disc part and fitted rotatably and axially slidably on a shaft-form member formed integrally with the upper reel disc part, rotating power, from a driving means, turns the intermediate reel disc in the take-up direction. A lower reel disc part is disposed below the intermediate reel disc part and fitted on the shaft-form member to slide axially thereon, but to rotate unitarily therewith. First and second friction clutches are interposed respectively between the upper reel disc part and the intermediate reel disc part and between the intermediate and lower reel disc parts. The rotation of the intermediate reel, as driven at the time of recording or reproducing, is transmitted simultaneously by way of a first rotation transmission path through the first friction clutch means and a second rotation transmission path through the second friction clutch means, the lower reel disc part, and the shaft-form member to the upper reel disc part. The first and second rotation transmission paths have a mutually parallel relationship.
Abstract:
In a cartridge-type tape recorder for reproducing and recording with 2-channel cartridges and 4-channel cartridges, there is provided a 2-channel - 4-channel changeover device comprising a plunger for changing the height position of a magnetic head, a first switch for opening and closing a driving circuit for the plunger, a second switch for changeover switching circuit connections between 2-channel and 4-channel states, a third switch for connecting and disconnecting a power-supply circuit, and a mechanism for changing over of the operations of said first, second, and third switches in response to the insertion of a cartridge into loaded position. The switch operation changeover mechanism operates at the time of insertion of a 2-channel cartridge into loaded position to open the first switch, to changeover the second switch to the 2-channel side, and to close the third switch and operates at the time of extraction of cartridge of the open the third switch, to changeover the second switch to the 4-channel side, and to close the first switch.