Abstract: A display device is disclosed which is capable of providing display image of high quality and resolution without flickering of picture cells and black lines on the image. The display device includes a reflector having a plurality of reflecting openings formed to respectively positionally correspond to the picture cells and be expanded in the forward direction.

Abstract: A document size detecting device according to the invention is adapted to be mounted in an image forming device for a copying machine or the like, comprising an arm adapted to be folded and unfolded in operative association with the forward and backward movements, respectively, of the optical section of the image forming device, and a plurality of optical sensors attached to the arm at predetermined positions thereon corresponding to various format sizes of documents.

Abstract: A write head of optical printer utilizing the principle of a vacuum fluorescent display device which is capable of forming a sufficient grid gap between each adjacent two grids and accurately and readily accomplishing the arrangement of the grids is disclosed. The write head is constructed in such a manner that grids are arranged above a plurality of parallel strip-like anode conductors arranged on a substrate so as to obliquely cross a row of the anode conductors, phosphor layers are deposited on the anode conductors so as to be opposite to the grids to form light emitting picture cells, and an array of the light emitting picture cells in each grid is formed separately.

Abstract: A linear electrode construction for a fluorescent display device which is capable of providing the high densification of luminous display is disclosed. The linear electrode construction includes two electrode frames each comprising a plurality of linear electrodes arranged side by side at intervals of a predetermined distance and each having a fine wire-like electrode portion and a connecting terminal portion formed at one end of the electrode portion. The fine wire-like electrode portions are uniformly applied thereto tension to prevent the sagging in the operation. Also, a process for preparing such a linear electrode construction is disclosed.

Abstract: A linear electrode construction for a fluorescent display device which is capable of providing the high densification of luminous display is disclosed. The linear electrode construction includes two electrode frames each comprising a plurality of linear electrodes arranged side by side at intervals of a predetermined distance and each having a fine wire-like electrode portion and a connecting terminal portion formed at one end of the electrode portion. The fine wire-like electrode portions have tension uniformly applied thereto to prevent the sagging during operation. Also, a process for preparing such a linear electrode construction is disclosed.

Abstract: A boron nitride (BN) film is disclosed having excellent electrical insulating and heat conduction characteristics and capable of acting as seeds for epitaxially growing a semiconductor film thereon which has a crystallizability sufficient to incorporate a semiconductor element therein. The BN film is formed by the growth on a substrate in a manner to be preferentially orientated to a predetermined axis thereof. A process for preparing such film is also disclosed.

Abstract: A cleaning device for use with transfer type electrostatic copying machines wherein a wiping assembly disposed upstream of a charging-purpose corona discharger along the direction of travel of a photoreceptor is brought into slide contact with the photoreceptor during exposure to intercept residual toner particles on the photoreceptor. The wiping assembly comprises upstream and downstream members adapted to be brought into slide contact with the photoreceptor, and a pressure setting assembly for applying individual preset pressures to the two members, the arrangement being such that some of the residual toner particles are intercepted by the upstream member and then the remainder are intercepted by the downstream member.

Abstract: A cleaning device in an electrostatic copying apparatus, for removing residual toner particles from the surface of a photosensitive member adapted to move through an endless conveying passage, includes a blade holding mechanism mounted pivotally around an axis extending substantially parallel to the surface of the photosensitive member and substantially perpendicular to the moving direction of the photosensitive member, and a cleaning blade mounted on the blade holding mechanism. The cleaning device further includes a first spring elastically biasing the blade holding mechanism to a non-operating position in which the cleaning blade is away from the surface of the photosensitive member and an operating mechanism selectively positioning the blade holding mechanism against the elastic biasing action of the first spring to an operating position in which the cleaning blade is pressed against the surface of the photosensitive member.

Abstract: A graphic fluorescent display device is disclosed which is capable of effectively eliminating a streak pattern occurring right below cathodes. The fluorescent display device is constructed in such a manner that an electric field controlling electrode is disposed on the surface of a cover plate opposite to a substrate having anodes formed thereon, and potential positive with respect to the cathodes is applied to the electric field controlling electrode so that electrons emitted from the cathodes may be diffused by the positive electric field of the electric field controlling electrode.

Abstract: A silver halide photographic light-sensitive material is described, comprising a support having provided thereon at least one light-sensitive silver halide emulsion layer associated with a substantially immobile, positive one-equivalent redox compound capable of releasing a photographically useful compound or a precursor thereof as a result of a redox reaction, said compound being represented by formula (I) ##STR1## wherein Acp represents an anion center precursor capable of causing --Z--Q to be released by a quinonemethide type releasing reaction when being reduced R.sup.1 and R.sup.

Abstract: A casing for a display device of the tipless type is disclosed which is capable of being readily manufactured, and allowing a display device to have a good space factor and exhibit excellent display characteristics. The casing comprises a casing body formed with an evacuation hole and a plate lid member arranged to sealingly close the evacuation hole by means of an oxide solder layer when the casing is evacuated.

Abstract: A process for forming an amorphous silicon film consisting of silicon (Si) and hydrogen (H) bonded in a monohydride state by a cluster ion beam deposition which comprises the step of impinging ionized and non-ionized silicon (Si) and hydrogen (H) upon a substrate within a vacuum chamber in which hydrogen is maintained at a pressure of about 10.sup.-2 Torr or less.

Abstract: A fluorescent display device capable of eliminating a display defect, forming a display pattern with a sharp edge and providing excellent visibility. The fluorescent display device includes a conductive metallic film deposited on one surface of a transparent insulating substrate, frames each defined by the metallic film so as to have an inner periphery of a contour corresponding to a display segment corresponding thereto, and display segment openings each having an anode conductor formed with micro-gaps by partially removing the portion of the metallic film surrounded by the frame.

Abstract: A boron nitride (BN) film is disclosed having excellent electrical insulating and heat conduction characteristics and capable of acting as seeds for epitaxially growing a semiconductor film thereon which has a crystallizability sufficient to incorporate a semiconductor element therein. The BN film is formed by the growth on a substrate in a manner to be preferentially orientated to a predetermined axis thereof. A process for preparing such film is also disclosed.

Abstract: A fluorescent composition containing indium oxide and rare earth elements which can emit green, blue or red light under low-velocity electron excitation.

Abstract: An ion beam deposition apparatus capable of uniformly distributing an ionized vaporized material on a desired area of a substrate is disclosed. The apparatus includes an accelerating electrode and a deflecting electrode each arranged between an ionization region and a substrate.

Abstract: A fluorescent display tube of the type that luminous display is observed through a substrate is disclosed which is capable of accomplishing luminous display easily observable in a light environment as well and without any display defect, providing luminous display with a wide visual angle and simplifying the manufacturing process. The fluorescent display tube includes a substrate made of a light-permeable and light-scattering insulating material and a metal film deposited on the substrate which has a color similar to non-luminous color of anodes and also acts as feeder paths. The metal film is formed with openings corresponding to the shape of a display pattern in which transparent anode conductors each having a fluorescent layer deposited thereon are received.

Abstract: A fluorescent display device of the dot-matrix type is disclosed having control electrodes each formed by a plurality of wire-like conductors of a micro diameter to perform luminous display of a high density and decrease control voltage and current. A multi-color fluorescent display device of such type is also disclosed having one picture cell formed by a block consisting of a plural-fluorescent-layer unit having different luminous colors and performing display of a high luminance.

Abstract: An amorphous film formed of a transition element-silicon compound which has excellent electric and optical characteristics is disclosed. The compound is amorphous and has a Si content of 60-85 at. %.

Abstract: A photoelectromotive force element capable of being manufactured at a low cost and exhibiting an excellent photoelectric conversion efficiency. The element comprises one conductivity type semiconductor substrate and the other conductivity type iron oxide film deposited on the semiconductor substrate.