Abstract: A printing head has two or more columns each consisting of a vertical array of dot printing elements. A pulse motor moves the printing head relative to paper, and another pulse motor line feeds the paper upon printing each line. The columns of the head print dots in a superposed manner at high speed under the control of a CPU including memories for storing 7-dot patterns and a control program, respectively.

Abstract: An optical scanning system is disclosed in which only an anamorphic optical system is disposed between a deflector and a scanned surface. The anamorphic optical system comprises a first anamorphic optical system which focuses light in the direction of the scanning line and a second anamorphic optical system which focuses light in a plane normal to the scanning line. The first anamorphic optical system is composed of one or two cylindrical lenses and has an optical means for moving the beam on the scanned surface at uniform speed. The second anamorphic optical system functions to correct a positional error of the scanning beam on the scanned surface caused by the inclination of the deflector from its normal position.

Abstract: A signal recording device comprises information means for introducing frequency-modulated information signals, generator means for generating control signals corresponding to the frequencies of the information signals introduced by the information means, control means for varying the level of signals applied thereto in accordance with the output of the generator means, input means for applying the information signals to the control means, modulator means for applying, as modulation signals, the level-varied information signals provided by the control means, and beam generating means for generating a beam the intensity of which is to be varied by the modulator means.

Abstract: An optical high density recording device which comprises, in combination, a beam generator, a beam modulator to modulate the beam in accordance with an applied modulating signal, a recording medium to record a locus of the beam irradiated thereonto. The recording medium and the beam irradiated onto the recording medium are moved relatively to one another, a recording signal is introduced onto the recording medium, a corrective voltage to be determined by a function of the recording signal is generated and is applied with the recording signal to the beam modulator as a modulating signal.

Abstract: An improved output unit used in recording information on a recording medium is disclosed which comprises a plurality of output parts and in which recording of information is carried out while changing the relative position between the output from the output parts and the recording medium. The improved output unit according to the invention is characterized in that the output parts are arranged in rows in a predetermined direction and are disposed in such a manner that information may be put out selectively from the output parts so as to prevent information from being recorded in overlapping fashion on the recording medium in a manner as often occurs in the conventional unit. Spacing between the output parts is selected large enough that the output parts are easy to manufacture. Since a plurality of output parts can be operated very effectively, extremely high recording efficiency is achieved using the information output unit according to the invention.

Abstract: In a light deflecting device using a polygon mirror, a polygon mirror member is provided which has a reference surface and a plurality of integral mirrored surfaces formed at a predetermined angle with respect to the reference surface. A fixing member resiliently fixes the polygon mirror member to a drive shaft for rotatively driving the polygon mirror member. The fixing member is effective to vary the angle formed between the reference surface and the drive shaft. A plurality of float members are provided in opposed relationship with the reference surface of the polygon mirror member and fixed independently of the rotation of the polygon mirror member. The float members are effective to produce a flow of air between the reference surface and the float members during rotation of the polygon mirror member to maintain a predetermined distance therebetween.

Abstract: A scanning device for light beams, wherein, for the purpose of permitting positional displacement of a scanning light beam to a certain extent in the direction perpendicular to its scanning direction, which is possibly caused by tilting or inclination of the reflection surfaces of scanning means such as a polygonal mirror, there is disposed a tolerating optical system in the light path of the light beam from the above-mentioned reflection surfaces. The positioned displacement of this light beam caused by tilting of the reflection surfaces of the light beam scanning means can be tolerated by a positional displacement tolerating optical system, wherein the focal length in the direction perpendicular to the scanning direction of the light beam is shortened in comparison with the focal length in the scanning direction of this tolerating optical system.

Abstract: A recording medium or video disk of this invention consists basically of a base, a plurality of layers formed on the base and made of a compound or compounds sensitive to radiation energy, and intermediate layers interposed between the adjacent radiation sensitive layers. Said radiation sensitive layers may have different sensitivities to radiation energy, and the intermediate layer should not chemically react with the photosensitive layers.

Abstract: A speed control device for a moving member which comprises a moving member, driving mechanism for the moving member, position coherent light containing a position information of the moving member, reference coherent light so formed as to not containing the position information of the moving member for required formation of the position coherent light and an interference light, interference light forming means utilizing the position coherent light and the reference coherent light, means for detecting interference light formed by the interference light forming means, and controlling means for the driving means to render the detected output obtained by the detection means to become a sinusoidal wave having a predetermined frequency.

Abstract: An apparatus for obtaining an information-carrying light comprises a modulated beam generator emitting a beam having an intensity variable in accordance with a modulating signal applied thereto, a data sheet or original bearing thereon the data to be illuminated by the beam from the modulated beam generator, a photoelectric converter means for receiving a secondary light resulting from the data on the data sheet being illuminated by the beam emitted from the modulated beam generator, and a modulating signal generator for generating the modulating signal applied to the modulated beam generator in order that the quantity of light received by the photoelectric converter means may be substantially constant.

Abstract: A prism anamorphic optical system is disposed in the path of deflected beam from a rotatable polygonal mirror or a galvano-mirror. This prism anamorphic optical system includes at least two prisms, so that different amounts of displacement of the deflected beam at each angle of deflection and in a direction perpendicular to the direction of deflection caused by the first of the prisms are corrected by the second and subsequent prisms, as viewed from the incidence side. Thus, a straight scanning line may be obtained.

Abstract: A high density optical recording apparatus provided with a light sensitive member adapted to make concave and convex records in response to beams. A recording medium is placed on the disc and a shaft axially secured to the disc is rotated by means of a motor to turn the recording medium together with the disc. An interference optical system is provided to strictly maintain the relative position between the recording optical system and the recording medium. A floating body provided with a plurality of floaters is adapted to be floated by an air flow generated when the recording medium is turned.

Abstract: A scanning optical system of a type wherein a light beam is sequentially reflected by each of the reflection surfaces of a polygonal mirror rotating in a predetermined direction to convert it to a scanning light beam which moves repetitively in a single direction to scan the surface of an object to be scanned, the optical system being provided with means for moving the light beam incident on the reflection surface in a single direction along the direction of the rotating movement of the reflection surfaces and in a repetitive manner in synchronism with rotation of the polygonal mirror so that the light beam may be constantly projected onto an effective reflection region of each reflection surface of the polygonal mirror.

Abstract: The present invention relates to a linear image forming apparatus. Said apparatus includes a beam generator for generating a light beam, a filter provided with a plurality of slits to irradiate the light beam from said beam generator to pass it therethrough in a rectangular form, whose width determines the length of the linear image formed by the beam which has passed through said slit, and a converging optical system for irradiating the beam passed through the plural slits of said filter and converge the irradiated beam for making one linear image.

Abstract: A linear image composition device comprising a beam generator, a first rectangular beam producer for causing the beam generated by the beam generator to be a first parallel light beam with rectangular cross section, a second rectangular beam producer for causing the rectangular beam obtained by the first rectangular beam producer to be a second parallel light beam with rectangular cross section different from that of the first parallel light beam, and a beam condenser to which the parallel light beam with rectangular cross section produced in the record rectangular beam producer is applied.

Abstract: In an optical head moving device, there is provided a pair of parallel, spaced apart guide members having the axes thereof lying on a common plane. A movable member having engaging portions engaged with the pair of guide members and a connecting portion connecting together the engaging portions is provided on the guide members. An optical head for focusing a light beam introduced thereinto is securely mounted on the movable member in such a manner that the emergence-side principal point of the optical head lies on the plane containing the axes of the pair of guide members. Means is provided for introducing a light beam into the optical head. Mover means is provided for moving the movable means with the engaging portions thereof in engagement with the guide members, to thereby move the optical head.

Abstract: An optical device for producing a minute beam comprises beam forming means such as laser generator or the like, annular beam forming means such as lens or annular aperture mask for forming the beam from the beam forming means into a beam of annular cross section, and a condenser lens for condensing the annular beam from the annular beam forming means.