摘要:
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.
摘要:
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.
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:
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.
摘要:
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.
摘要:
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.
摘要:
A conveying belt mechanism for an automatic document feeder, for conveying a document placed on a document bearing plate to a document exposure position on a transparent platen. The conveying belt mechanism includes a driving roller and a driven roller disposed above the transparent platen, with a predetermined spacing provided between the two rollers in a document feeding direction, an endless conveying belt looped over the driving roller and the driven roller, pressing rollers disposed between the driving roller and the driven roller for pressing the endless conveying belt against the transparent platen, and belt guides mounted at both ends of the driven roller. Each belt guide includes a boss portion mounted on a rotating shaft of the driven roller so as to be capable of relative rotation, a detachment-preventing portion which protrudes from the boss portion diametrically beyond an outer peripheral surface of the driven roller and which has a front end bent inwardly, and a rotation stopping portion provided in the boss portion, the rotation stopping portion being engaged with a rotation restraining member.
摘要:
This invention relates to a document transport device for use in an image forming apparatus. The document transport device has a first belt roller disposed above a document positioning member. A second belt roller is disposed away from the first belt roller in the document transport direction. An endless belt is wound around the first and second belt rollers. Plural presser rollers are arranged on a specified position between the first and second belt rollers to press the belt against a contact glass. The document transport device has a tension roller between the first belt roller and the presser roller closest thereto to apply a tension force to the belt so as to set the belt at the lowermost position of the tension roller below a common tangential line to the circumferences of the first belt roller and the presser roller and apart from the contact glass.
摘要:
A document feeder having a cover covering a portion of a main body and adapted to be pivotally opened, and a pair of document transportation rollers provided in an abutting relation in the midst of a document transportation path for transportation of a document original. A document guiding member for guiding the document original to an abutment position of the pair of rollers is attached to the cover.