摘要:
A line printer apparatus with which a printing control operation is carried out by using a printing mechanism and printing operation control unit in which the reversal of the motion of a printing unit is carried out in synchronization with the feeding of a paper to be printed. The apparatus includes a decision unit for deciding whether or not a shuttle carrying the printing unit should be stopped during the reversal of the motion in accordance with printing information supplied to a unit for controlling the driving of the shuttle and the condition of feeding of the paper; reversing motion stopping means for stopping the reversing motion of the printing unit and holding it in the stopped state by supplying reversing stopping information to the printing operation control means when the paper feeding time of the paper to be printed is greater than the time of the reversing motion of the printing unit; and releasing means for releasing the stopping of the reversing motion of the printing unit in relation to the timing of termination of paper feeding of the paper to be printed and restarting the printing from a printing starting position. Therefore, the printing operation is restarted immediately after the termination of a paper feeding operation even when the time of the paper feeding is longer than the time of reversing motion of the printing unit.
摘要:
An impact printer which can detect halfway defects of printing coils such as partial short circuits is disclosed. The impact printer according to the present invention includes at least one printing coil for driving a printing element and driving transistor which controls the printing element by switching a current flowed through the printing coil, and further includes an inductance detection means for detecting whether or not said printing coil has an appropriate inductance.
摘要:
Diaphragms of a plurality of capacitor microphone units are arranged in the same plane and the capacitor microphone units are connected in series to make an output from an impedance converter connected to one capacitor microphone unit drives a ground side of another capacitor microphone unit connected to the impedance converter.
摘要:
There is provided a condenser microphone unit in which the shield of a shielding member that covers a front acoustic terminal from the inside of a unit case is assured to prevent noise caused by electromagnetic waves radiated especially from a cellular phone from being generated. In a condenser microphone unit including a metallic cylindrical unit case 10 having a front acoustic terminal 11 on one end side; an electrostatic acousto-electric converter 20 housed in the unit case 10; and a shielding member 30 disposed between the acousto-electric converter 20 and the front acoustic terminal 11 to cover the front acoustic terminal 11 from the inside of the unit case 10, as the shielding member 30, there is used a shielding plate 32 consisting of a metallic porous plate integrally having a plurality of locking pieces 33, which dig into the inner wall surface of the unit case 10 on account of elastic deformation, in the peripheral edge part thereof.
摘要:
A boundary microphone including a microphone case is provided whereby sufficient shielding performance can be achieved against strong electromagnetic waves of cellular phones. In the boundary microphone, a microphone case 1 includes a flat metallic base 10 opened on its top surface and a metallic microphone cover 20 mounted on the base 10 so as to cover the top surface of the base 10, the microphone cover 20 having a number of openings (sound wave introduction holes) thereon, the microphone case 1 housing a microphone unit 31, wherein a gasket 40 having elasticity and conductivity is disposed between the base 10 and an edge face 20a of the microphone cover 20.
摘要:
A microphone includes: first and second bi-directional microphone units having respective directional axes arranged on two straight lines passing through one point and radially extending with an interval of 120 degrees; a third bi-directional microphone unit having a directional axis arranged on a straight line perpendicular to a plane formed by the two straight lines; and an omnidirectional microphone unit arranged in sound collection regions of the first, second, and third bi-directional microphone units.
摘要:
A connector according to the invention includes: a metal cylinder; a conductive receptacle having an end fitted in an end of the metal cylinder; a pin assembly fitted in the conductive receptacle; pins fixed to the pin assembly, the pins being connected to a cable; a circuit board fixed to the other end of the metal cylinder, the circuit board having through holes electrically connected to the pins; and a sealant disposed between the circuit board and the pin assembly, the sealant infilling gaps between the pins and the through holes of the circuit board.
摘要:
A connector according to the invention includes: a metal cylinder; a conductive receptacle having an end fitted in an end of the metal cylinder; a pin assembly fitted in the conductive receptacle; pins fixed to the pin assembly, the pins being connected to a cable; a circuit board fixed to the other end of the metal cylinder, the circuit board having through holes electrically connected to the pins; and a sealant disposed between the circuit board and the pin assembly, the sealant infilling gaps between the pins and the through holes of the circuit board.
摘要:
A capacitor microphone includes: a capacitor microphone unit; a microphone casing that incorporates the microphone unit and is provided with an opening communicating with a rear acoustic terminal of the microphone unit; and a shield plate that covers the opening in the microphone casing from inside of the microphone casing. The shield plate has a projection extending towards axial direction of the microphone casing at least on microphone unit side in the axial direction of the microphone casing. The projection is folded to be pressed firmly against the outer surface of a casing of the capacitor microphone unit. The shield plate is rolled into a cylindrical shape and is in contact with the inner surface of the microphone casing with pressure.
摘要:
A stereo capacitor microphone unit includes: two unidirectional microphone units integrally formed with respective fixed electrodes of the unidirectional microphone units facing each other; and an insulating spacer that is interposed between the fixed electrodes and provided with a gap formed at a portion of an outer periphery towards radial direction. The gap communicates fixed electrode rear spaces of the respective unidirectional microphone units with an external space to serve as a common rear acoustic terminal for the unidirectional microphone units.