Method and apparatus for reading electronic signal pattern stored in movable image recording plane

Abstract

Abstract PURPOSE: To prevent the reduction of the quality of a stored pattern by reading an electronic pattern indicating an image on a recording medium by the tunnel detecting means of a sensing needle with the use of a scanning electronic beam. CONSTITUTION: A housing 10 is in a high vacuum state. An optoelectronic tape 12 and a tape frame selected along the tape 12 are installed in the housing. An optical image O is automatically converged in the tape frame by a projector 34. The tape 12 writes this image at a station 26 and after its rotational movement, a tape frame electronic image is read at a reading station 28. At the station 28, the image is subjected to scanning performed by using one or more sensing needles, is tunnel-detected and then read. Then, after electrons (e) from an electronic gun 102 are received by the surface of the tape frame, secondary electrons (e') are produced. The electrons (e') are collected by an electron collector 114 and sent to a reading circuit 116. Thus, the reduction of the quality of the pattern is prevented.

Inventors

• 👤 Aaru Kiyuunru Manfuretsudo

Bibliographic Details