Cathode ray tube printing apparatus and method

Apparatus for producing hard copy of an optical image displayed on a faceplate of a raster-scanned CRT display device comprising in combination:

• a raster-scanned CRT display device having a faceplate;
• a plurality of light fibers supported in a row along a preselected scan line position on said faceplate arranged to collect light emitted from contiguous regions along said scan line position and to transmit any such light to corresponding positions along a print row remote from said CRT faceplate;
• means for supporting a print receiving medium at said print row, the arrangement being such that, in use, an image of the light transmitted by said fibers is produced in said medium;
• means for moving said medium supported at said print row in a direction transverse to said print row;
• display logic operable to produce successive cycles of operation, each cycle including a display mode and a print mode, said display logic operable to display a raster screened image on the faceplate of said CRT during said display mode and operable in said print mode, in response to the rate of movement of said medium, to control the supply of successive raster-scanned lines of said image to said preselected scan line position, so that images resulting therefrom representing successive raster scan lines of the image are produced in corresponding print line positions in said medium;
• and
• means operable to develop images so produced.