Abstract: An electrophotographic image recording apparatus that forms an electrostatic latent image so that the uniformly charged surface of a photoreceptor is scanned for its exposure with a beam spot of a light beam generated according to image information, to discharge the surface of the photoreceptor up to a medium potential. The electrophotographic image recording apparatus includes a light beam generator capable of varying an amount of light beam and a light intensity distribution pattern of a beam spot on the surface of the photoreceptor, an intensity distribution pattern controller for controlling the light beam generator according to the image information of peripheral pixels, to vary the intensity distribution pattern of the beam spot on the surface of the photoreceptor, and a light beam output controller for controlling the light beam generator to put the exposure energy on pixels, exposed to the beam spots of intensity distribution patterns, at a predetermined value.

Abstract: A printer control system for controlling a print characteristic of a printer for printing a print pixel signal synchronized to horizontal lines of an image. The print pixel signal has an arbitrary horizontal resolution and includes white print pixel signals representing white pixels of the image and black print pixel signals representing black pixels of the image.

Abstract: An image recording apparatus that records a visible image on a recording medium by successively entering image signals forming an image. The apparatus comprises a standard pattern detector detecting standard patterns from the input image signals, image density measuring device measuring density of an output signal, image quality judging device judging image quality of every standard pattern output of the image density measuring device, and process controller deciding process parameters on the basis of signals output of the image quality judging device before controlling image quality of the output signal using the process parameters. The apparatus therefore can save the toner and paper and control for high image quality.

Abstract: An envelope extracting circuit extracts an envelope from the waveform sampled by a musical tone sampling circuit, and stores the envelope data into a memory. An envelope approximating circuit approximates the envelope data as stored in the memory by the function data such as linear or exponential function data. The original envelope is approximated by a limited number of function waveforms whose characteristics change at switching points.

Abstract: A radio telephone apparatus for transmitting and receiving information signals as electrical waves includes a main body section towards one end of which a speaker unit is enclosed. A battery casing accommodating a battery which is adapted for supplying power to the main body section is detachably mounted on the other end of the main body section to reduce the size and the thickness of the apparatus. A ringer device is enclosed within the battery casing so that the acoustic sound emitted by the ringer is prevented from reaching the user's ear which is in the vicinity of the speaker unit. The microphone for the radiotelephone apparatus in also enclosed within the battery casing.

Abstract: An envelope extracting circuit extracts an envelope from the waveform sampled by a musical tone sampling circuit, and stores the envelope data into a memory. An envelope approximating circuit approximates the envelope data as stored in the memory by the function data such as linear or exponential function data. The original envelope is approximated by a limited number of function waveforms whose characteristics change at switching points.

Abstract: An electronic blackboard having a copy function, and an edit function or communication function. A single reading unit is used in common for both reading an image on a flat board and reading an image or an original document. Reflected light from the flat board and from the original document is converged and projected onto a light receiving surface of a single photoelectric conversion element. An image of the flat board of the original document can be selectively read, or the composite image of both the flat board and original document can be read. Further, the electrical signal corresponding to the image can be modulated and transmitted, and a received electrical signal can be demodulated to reproduce a corresponding image. Furthermore, in accordance with the electrical signal obtained by photoelectrically converting an image, the layout of the image on the flat board can be determined and edited to change the shape of the image.

Abstract: A liquid hydrocarbon such as a natural gas liquid generally contains a small amount of mercury in a state of elemental mercury, ionized mercury, ionizable mercury compounds, which are requested to be removed thoroughly. Further, organic mercury compounds are contained in some natural gas liquid and other liquid hydrocarbons depending on their district of production, and its removal is also necessary.Already known adsorbents can adsorb elemental mercury and organic mercury compounds in a liquid hydrocarbon, but they hardly adsorb ionizable mercury compounds and ionized mercury derived from the ionizable mercury compounds.According to the preesent invention which comprises contacting the liquid hydrocarbon with a sulfur compound represented by a general formula MM'S.sub.

Abstract: An envelope extracting circuit extracts an envelope from the waveform sampled by a musical tone sampling circuit, and stores the envelope data into a memory. An envelope approximating circuit approximates the envelope data as stored in the memory by the function data such as linear or exponential function data. The original envelope is approximated by a limited number of function waveforms whose characteristics change at switching points.

Abstract: Liquid hydrocarbons such as natural gas liquid generally contain elementary mercury, ionized mercury and ionizable mercury compounds. All of them are requested to be removed. Further, organic mercury compounds are contained in some natural gas liquid and other liquid hydrocarbons depending on their district of production, and its removal is also necessary.It has been found that an adsorbent composition comprising multi-component metal sulfides supported on a carrier wherein one of metal component is molybdenum of 3-15 weight-% calculated as molybdenum metal in final product and another metal component is selected from the group consisting of cobalt and nickel, the atomic ratio of these to molybdenum being in the range of 0.05-0.9 can adsorb more amount of elemental mercury from hydrocarbons than the conventional adsorbents.

Abstract: A durable hard structure is demolished by a method in which one or more holes are formed in a durable hard structure, filling the holes with an aqueous slurry containing a demolition-facilitating clinker composition consisting essentially of (1) 55% by weight or more of a clinker consisting essentially of 2 to 40% by weight of a calcium-alumino-ferrite solid solution, 60 to 98% by weight of both free lime and free magnesia in the ratio in weight of from 60:40 to 98.3:1.7 and not more than 6% by weight of an inevitable impurity free from (CaO).sub.3 Al.sub.2 O.sub.3 determined in accordance with Japanese Industrial Standard (JIS) R 5202, said clinker being produced at a sintering temperature of from 1200.degree. to 1800.degree. C.

Abstract: A recording apparatus comprising an input terminal to which a picture information signal to be recorded is applied, a driver for moving an electrostatic printing medium in a predetermined direction, an apparatus for electrifying the electrostatic printing medium, a thermal printing head for heating the electrostatic printing medium in accordance with the picture information signal to reduce the resistance of the heated regions of the electrostatic printing medium, thereby forming a pattern of resistance-reduced region on the electrostatic printing medium, so that a charge pattern (electrostatic latent image) according to the picture information signal is formed on the surface of the electrostatic printing medium.

Abstract: Two electronic musical instruments are supported in combination on a stand. The electronic musical instruments have respective switch sections each for setting a plurality of different timbres which are different from those which can be set by the other. When transfer mode switches of both the instruments are "on", timbre data set in one electronic musical instrument is transferred to the other electronic musical instrument through a cable, so that tones with the same timbre are sounded from loudspeakers connected to the respective instruments.

Abstract: An apparatus for converting an analog input signal to a binary output signal, particularly for use in a facsimile system. The apparatus includes a reference level generator having its input terminal supplied with the analog input signal, a signal dividing circuitry connected between the input and output terminals of the reference level generator, an integrator having one end connected with the dividing output terminal of the signal dividing circuitry and the other end connected with a common potential level point in the apparatus and a comparator having one input terminal connected with the signal dividing output terminal of the dividing circuitry and the other input terminal connected with the input terminal of the reference level generator. The reference level on the basis of which the analog input signal is converted to a binary signal is thus adjusted for satisfactory conversion of the signal.

Abstract: A control circuit is used for matrix drive recording. It includes a microprocessor, a RAM for storing data to be recorded therein, an address signal editing circuit for modifying the input addresses to the RAM, a shift register for converting the data from parallel to serial form and transferring it to a recording circuit, and a DMA controller for reading the data from the RAM and transferring it to the shift register.

Abstract: Musical tone color setting apparatus is arranged so that when a program/preset switch, a feet switch envelope switch and modulation switch are actuated together with a selected key of a ten-key input unit, program tone color data obtained by combining data selected from three groups of tone color data is stored in a tone color data memory. A tone color data corresponding to the program tone color data stored in the memory is later read out from a ROM, and a music sound having a tone color corresponding to the tone color data is generated from a loudspeaker in response to operation of a keyboard.

Abstract: A process for producing calcium hypochlorite hydrate crystals, which comprises continuously supplying a basic calcium hypochlorite slurry and chlorine gas, and reacting them at a temperature of from 20.degree.-50.degree. C. and at a chlorination rate of from 92 to 98.5% to precipitate calcium hypochlorite crystals at a crystallization velocity of not greater than 200 kg/m.sup.3 per hour.

Abstract: Basic frequency data is preliminarily stored in a ROM. Tuning data obtained from a tuning counter according to manual operation of a rotary switch, and basic frequency data out from the ROM are processed in a CPU to form modified frequency data, which is stored in a RAM. The modified frequency data stored in the RAM is selectively read out according to the operation of the keyboard, so that a tuned note sound is produced from a loudspeaker.

Abstract: A digital musical tone signal is generated in a first LSI selected by a chip select signal transferred from a CPU in accordance with a control signal transferred through a control bus from the CPU. Amplitude data and envelope data are transferred from a second LSI to the first LSI through data lines. In the first LSI, the digital musical tone signal amplitude- and envelope-controlled is transferred to an A/D converter where it is converted into an analog musical tone signal.

Abstract: A power saving device for an electronic musical instrument in which when the electronic musical instrument is idle, or no key operation by an operator takes place for a given period of time, a power source is automatically turned off to thereby prevent wasteful power consumption.