摘要:
A camera has a lens protection barrier member and an opening/closing mechanism that includes a cam and a spring member, the force of which varies. The cam is designed so as to compensate for the variation of spring force and maintain a uniform operating load.
摘要:
This camera includes a viewfinder and a device (4) for detecting the visual line of a photographer looking through the viewfinder, an operation member (1), (8) such as a release button which is operated by the photographer to take a photograph, a means (2) for inputting calibration information, and a means for performing photography (5), (6), (7). The calibration information input means (2) operates in response to the operation of the operation member (1), (8), and inputs and stores calibration information when the photographer fixates on a target mark (3, b) visible within the viewfinder, based upon the visual line detected at that time by the visual line detection means (4). The object intended by the photographer to be photographed is detected and photographs it, based upon the visual line detected by the visual line detection means (4) and the stored calibration information.
摘要:
Polymer particles including polysiloxane is disclosed. The polymer particles are prepared by condensing at least one organosilane or organosiloxane compound in the presence of organic polymer particles which are prepared from specific monomers and dispersed in an aqueous medium. The polymer particles possess excellent water resistance, weatherability, water repellency, adhesion, and flexing resistance, and thus are useful as water paints, coating agents, carpet packing material, floor polishing agents, cementing medium, and the like.
摘要:
The size along an optical axis of a camera with a built-in magnetic head is reduced by arranging a magnetic head and a pad to be used for writing magnetic information radially externally of a bodytube, the pad being accommodated in a notch formed in the camera body so as to permit the bodytube to be retracted to a position close to a film.
摘要:
A magnetic head comprises a pair of magnetic core half parts abutted to each other and having magnetic alloy films on both abutted surfaces, a magnetic gap material composed of laminated films formed on the abutted surface of at least one of the pair of magnetic core half parts, and welding glass welding the pair of magnetic core half parts. The laminated films are composed of an SiO.sub.2 film and a Cr.sub.2 O.sub.3 film located in sequence from the magnetic core half part side. The laminated films serve to protect the magnetic alloy film from an erosion due to the welding glass. The Cr.sub.2 O.sub.3 film ofers excellent wettability by the welding glass, thereby improving the strength of the magnetic head.
摘要翻译:磁头包括彼此抵接并在两个邻接表面上具有磁性合金膜的一对磁芯半部分,由在一对磁芯半部中的至少一个的抵接表面上形成的层压膜构成的磁隙材料 ,焊接玻璃焊接对的一对磁芯半部分。 层叠膜由从磁芯半部分侧顺序的SiO 2膜和Cr 2 O 3膜构成。 层压膜用于保护磁性合金膜免受焊接玻璃的侵蚀。 Cr2O3薄膜通过焊接玻璃具有优异的润湿性,从而提高磁头的强度。
摘要:
A zero-crossing type thyristor is formed in an N-type semiconductor substrate. A first P-type base layer, a second P-type base layer, and a first P-type emitter layer are formed in a main surface of the substrate and isolated from one another by semiconductor regions of the substrate. A second N-type emitter layer is formed in the first P-type base layer, and a third N-type emitter layer is formed in the second P-type base layer. The third N-type emitter layer is electrically connected to the first P-type base layer. A fourth P-type emitter layer is formed in an opposite surface of the substrate. The second N-type emitter layer, first P-tytpe base layer, N-type semiconductor region, and fourth P-type emitter layer constitute a vertical main thyristor of the zero-crossing type thyristor, and the third N-type emitter layer, second P-type base layer, N-type semiconductor region, and first P-type emitter layer constitute a lateral driving thyristor thereof.
摘要:
There are provided on improved light receiving member for use in electrophotography and a process for the production thereof. The light receiving member comprises a substrate usable for electrophotography and a light receiving layer constituted by a charge injection inhibition layer formed of a polycrystalline material containing silicon atoms as the main constituent atoms and an element for controlling the conductivity, a photoconductive layer formed of an amorphous material containing silicon atoms as the main constituent atoms and at least one kind selected from hydrogen atoms and halogen atoms and a surface layer formed of an amorphous material containing silicon atoms, carbon atoms and hydrogen atoms, said polycrystalline material of which the charge injection inhibition layer being formed being a polycrystalline material prepared by introducing a precursor capable of contributing to formation of the charge injection inhibition layer and an active species reactive with the precursor separately into a film deposition space and chemically reacting them.
摘要:
Deburring apparatus for removing the burrs which are formed at the intersecting inner edges of at least two intersecting bores of a workpiece comprises; a frame having means for holding the workpiece; a cutter spindle borne rotatably in the frame; a cutter hinged to the leading end portion of the cutter spindle and biased to swing outwardly of the side thereof for cutting off the burrs at the inner edges of the bores of the workpiece held by the holding means of the frame when the cutter spindle is inserted into one of the bores and rotated; and a guide sleeve fitted slidably on the cutter spindle for sheathing the cutter, when the cutter spindle is inserted into or retracted out of the one of the bores, to protect the inner walls of the workpiece from damage, and for exposing the edge of the cutter to the outside when in the deburring operation. The cutter is directed along a curve of the inner edges of the bore of the workpiece by a cam on the frame engaged by a follower on the cutter spindle. A three-dimensional curve of the inner edges can be deburred precisely.
摘要:
A semiconductor switching device includes first to fourth layers, a first gate portion, a second gate portion and a common gate terminal interconnecting the first and second gate portions. The first gate portion is the current control type and has a rectifying PN junction, and the second gate portion is the voltage control type. When a first polarity vias voltage is applied to the common gate terminal, the device turns on through the second gate portion, while turns off through the first gate portion when a second polarity vias voltage is applied to the terminal.