Abstract: A sheet transport mechanism includes a pair of transport rollers and a roller pressing mechanism. The roller pressing mechanism includes one pair of first levers, one pair of second levers, and an elastic member. The one pair of first levers are supported to swing around a first swing shaft. A rotary shaft of a second roller of the pair of transport rollers is rotatably supported by a bearing aperture formed at substantially a center of the first lever. In addition, the one pair of second levers are supported to swing around the second swing shaft. Both ends of the elastic member are connected to tip ends of the second levers. The end of each second lever rotates around the second swing shaft, and presses the first lever toward the first roller of the pair of transport rollers.

Abstract: A pickup cable for a stringed instrument can switch between the output of the direct vibrational sound of strings and the output of the sound from the stringed instrument body generated by the vibrations of the strings and can also simultaneously output both the sound components. The pickup cable for a stringed instrument includes an input terminal to be inserted in a jack of the stringed instrument; a microphone to collect and convert sound of an internal space of the stringed instrument into collected-sound electrical signals; and an output terminal to output the collected-sound electrical signals. The microphone is incorporated in the input terminal.

Abstract: A condenser microphone comprising: a mic capsule in which a capacitor is composed of a diaphragm and a counter electrode, and which effects electroacoustic conversion; a FET for impedance-converting audio signals output from the mic capsule; and a CR circuit composed of a resistor and a capacitor, and connected to the FET to adjust a signal level in a low frequency range, and in the condenser microphone, an output terminal may be drawn out from a drain of the FET; and the CR circuit may be connected in between a source of the FET and the ground, furthermore, in the condenser microphone, there may be provided a changeover switch for switching a mode in which the CR circuit is connected in between the source of the FET and the ground into another mode in which the CR circuit is short-circuited to connect the source of the FET to the ground.

Abstract: An image forming apparatus includes, an upper cabinet disposed openably and closably on a main cabinet, reader cover disposed openably and closably on the upper cabinet and covering the image reader when the reader cover is closed and restriction mechanism preventing the reader cover from opening relative to the upper cabinet when the upper cabinet is open relative to the main cabinet. The restriction mechanism includes a first engagement member disposed at the upper cabinet and a second engagement member disposed at the reader cover and engageable with the first engagement member. The reader cover is prevented from opening relative to the upper cabinet when the first engagement member engages with the second engagement member. The second engagement member is urged to project from the reader cover towards the upper cabinet and movable from the upper cabinet to the reader cover.

Abstract: A sheet feeding device for a document feeding apparatus includes: a sheet containing section; a lift plate for lifting sheets stacked in the sheet containing section between a sheet feeding position and a sheet loading position; a sheet feeding section for separating and feeding the sheets in the sheet feeding position one after another; and a lifting mechanism for lifting up and down the lift plate, the lifting mechanism including: a biasing member for biasing the lift plate toward the sheet feeding section; a cam, having an outer peripheral surface with a cam curve, coupled with a driving force source and being rotated thereby; and an operating lever so provided independently of and between the lift plate and the cam as to abut the outer peripheral surface of the cam and to simultaneously press the lift plate against a biasing force of the biasing member, thereby to change a posture of the lift plate between the sheet feeding position and the sheet loading position.

Abstract: 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.

Abstract: A condenser microphone comprising: a mic capsule in which a capacitor is composed of a diaphragm and a counter electrode, and which effects electroacoustic conversion; a FET for impedance-converting audio signals output from the mic capsule; and a CR circuit composed of a resistor and a capacitor, and connected to the FET to adjust a signal level in a low frequency range, and in the condenser microphone, an output terminal may be drawn out from a drain of the FET; and the CR circuit may be connected in between a source of the FET and the ground, furthermore, in the condenser microphone, there may be provided a changeover switch for switching a mode in which the CR circuit is connected in between the source of the FET and the ground into another mode in which the CR circuit is short-circuited to connect the source of the FET to the ground.

Abstract: The subject invention provides a surface-placed a surface sound capturing microphone with a rotatable cable connecting member to allow the output cable extracted position to be simply changed. A surface-placed sound capturing microphone of the subject invention includes a connecting member 2 which connects one end of an output cable 3 for transferring an audio signal captured by a microphone capsule to a predetermined external instrument. The connecting member 2 is mounted in the microphone case 11 and is rotatable around a horizontal rotating shaft in parallel to the placed surface. The output cable of the microphone can be positioned at a horizontal extracted position where the cable is horizontally extracted in parallel to the placed surface and at a vertical extracted position where the cable is vertically extracted relating to the placed surface.

Abstract: The present invention provides a microphone support which includes a restriction groove 520 between a universal ball 50 and a mounting member 70 in order to restrict the rotating angle range of the universal ball 50 rotating with the axis line of a pipe through-hole 510 centered, so that the direction axis L of a microphone is restricted to have a designated swinging angle range with the talker side of the microphone centered. Therefore, no breaking wire by wire-twists is generated, and since the microphone is prevented from facing to loudspeakers owing to careless handling, no howling is also generated.

Abstract: 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.

Abstract: It is an object of the present invention to securely prevent a generation of an acoustic resonance due to a rear air chamber of a capsule support in a capacitor microphone including a microphone capsule and the capsule support and to improve assembly of a contacting terminal which is mounted in the capsule support. According to FIG. 1, a capacitor microphone of the present invention includes a microphone capsule 20 and a capsule support 10A which are connected through a connecting screw 24. A contacting terminal 140 contacting to a contact pin 23 of the microphone capsule 20 is disposed on the printed circuit board 120 housed in the capsule support 10A with an electric insulating block 180 held in the contacting terminal 140 and is fixed through the block 180 and an electric insulating cap member 160. Whereby, the cap member 160 increases the air proof grade of a rear air chamber and makes the air volume of the chamber as small as possible and constant so that an acoustic resonance is not generated.

Abstract: The present invention provides a unidirectional condenser microphone unit that can suppress the occurrence of howling. In a unidirectional condenser microphone unit, a diaphragm 20 extended across a support ring 21 and a backplate 30 supported by an insulation cylinder 50 are arranged opposite each other via a spacer ring 40. A backside air chamber 31 is provided between the backplate 30 and the insulation cylinder 50. When the density of air is defined as ?, sound velocity is defined as c, the effective vibration area of the diaphragm 20 is defined as S, and the volume of the backside air chamber 31 is defined as V, a stiffness s1 of the backside air chamber expressed by (?×c2×S2)/V is increased on the basis of the volume V of the backside air chamber to shift a resonance frequency of a unidirectional component contained in unidirectivity up to a frequency near a high-frequency reproduction limit.

Abstract: It is an object of the present invention to securely prevent a generation of an acoustic resonance due to a rear air chamber of a capsule support in a capacitor microphone including a microphone capsule and the capsule support and to improve assembly of a contacting terminal which is mounted in the capsule support. According to FIG. 1, a capacitor microphone of the present invention includes a microphone capsule 20 and a capsule support 10A which are connected through a connecting screw 24. A contacting terminal 140 contacting to a contact pin 23 of the microphone capsule 20 is disposed on the printed circuit board 120 housed in the capsule support 10A with an electric insulating block 180 held in the contacting terminal 140 and is fixed through the block 180 and an electric insulating cap member 160. Whereby, the cap member 160 increases the air proof grade of a rear air chamber and makes the air volume of the chamber as small as possible and constant so that an acoustic resonance is not generated.

Abstract: A primary object of the present invention is to provide a surface-placed sound capturing microphone with a rotatable cable connecting member of which an output cable extracted position can be simply changed as required. According to FIG. 8a, a surface-placed sound capturing microphone of the invention includes a connecting member 2 which connects one end of an output cable 3 for transferring an audio signal captured by a microphone capsule to a predetermined external instrument. The connecting member 2 is mounted in the microphone case 11 and is rotatable around a horizontal rotating shaft in parallel to the placed surface. The output cable of the microphone can be positioned at a horizontal extracted position where the cable is horizontally extracted in parallel to the placed surface and at a vertical extracted position where the cable is vertically extracted relating to the placed surface.

Abstract: The present invention provides a microphone support which includes a restriction groove 520 between a universal ball 50 and a mounting member 70 in order to restrict the rotating angle range of the universal ball 50 rotating with the axis line of a pipe through-hole 510 centered, so that the direction axis L of a microphone is restricted to have a designated swinging angle range with the talker side of the microphone centered. Therefore, no breaking wire by wire-twists is generated, and since the microphone is prevented from facing to loudspeakers owing to careless handling, no howling is also generated.

Abstract: A sheet member discharge mechanism comprising an upper discharge roller and a lower discharge roller for conveying a sheet member in a predetermined direction while nipping it therebetween. A push-down member is disposed downstream of the nipping portion between the upper discharge roller and the lower discharge roller as viewed in a direction of conveying the sheet member, the push-down member being allowed to move between an ascended position and a descended position and is urged to the descended position. The push-down member is moved to the ascended position by the sheet member acting upon the push-down member while the sheet member is being conveyed by the upper discharge roller and the lower discharge roller that work in cooperation. The push-down member moves to the descended position to push down the trailing edge of the sheet member after the trailing edge of the sheet member has passed the nipping portion between the upper discharge roller and the lower discharge roller.

Abstract: A microphone in which a diaphragm which is vibrated by a sound wave received, and a conversion portion such as a magnetic circuit for electrically acting on the diaphragm to convert the vibration into an electric signal are incorporated into a unit case, wherein a first elastic body and a second elastic body are arranged on the upper surface and the lower surface, respectively, of an peripheral edge portion of the diaphragm, the diaphragm is mounted on the unit case through the first elastic body on the upper surface of the peripheral edge portion thereof, and one end side of the conversion portion is placed in contact with the second elastic body arranged on the lower surface of the peripheral edge portion of diaphragm to encase the conversion portion into the unit case.