Abstract: A purification apparatus for superconductor fine particles is provided which comprises a device for forming a flow of powder containing the superconductor fine particles, and device for applying a magnetic field to the flow of the powder.

Abstract: An image information device of a construction wherein there are provided a laser oscillator; a modulator capable of modulating a laser beam oscillated from the laser oscillator by an external signal; a photosensitive body consisting essentially of an insulating layer, a photoconductive layer, and an electrically conductive substrate; a principal scanning means such as a polygonal revolving mirror, galvano-mirror, etc. to cause the modulated laser beam to scan the photosensitive body in the principal scanning direction; an optical system to cause the laser beam to focus on the photosensitive body; a position detection means to establish a commencing position of the scanning laser beam on the photosensitive body; means to input an image signal into the modulator in synchronism with the principal scanning means by an output from the position detection means; means to electrically charge the photosensitive body; corona discharge means to impress on the photosensitive body an A.C. corona discharge or a D.C.

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: This specification discloses a method and apparatus for imaging light on a medium to form a plurality of information elements which in turn form a particular character or other image information. A plurality of light beams are formed and are modulated by information signals and then the light beams are deflected by scanning means to scan a medium, the beams being modulated in such a manner that the same modulation is applied to a predetermined number of the light beams in accordance with a desired size of the information elements formed on the medium, and wherein the size of the information elements, defined by adjacent rows of identical light spots, is changed by varying the number of light beams receiving the same modulation.

Abstract: A device for handling output information from an electronic computer or the like at high speed utilizing a light beam, said device including a modulator for modulating a light beam in accordance with an image information signal such as a character, design or other output from a computer or the like, a medium for receiving the modulated light beam, means such as a galvanometer mirror for causing the modulated beam to scan the medium and optical means between the modulator and the scanning means for directing the modulated beam along any one of a plurality of light paths extending to the medium, the optical means being effective to vary the image forming characteristics such as image magnification of the beam incident on the medium.

Abstract: A laser recording method including: deflecting a plurality of laser beams, respectively and dividing the respective beams into multiple beams which are at substantially regular intervals; linearly arranging respective beams of the multiple beams in a line at substantially regular intervals and in a direction perpendicular to a direction of scanning action of the beams on the recording medium; modulating each beam and focusing the beam on the recording medium; and scanning the recording medium with the divided beams.