| 摘要 |
In a method for scanning a color fiber optic tube of an electron gun type in which a screen is formed by a plurality of band-shaped phosphors providing different illuminant colors, usually red, green and blue, respectively, an electron beam from the electron gun is deflected vertically in a lateral direction of the phosphors and horizontally in a longitudinal direction thereof. The vertical deflection of the electron beam is time controlled in response to the sensitivity of a photo-sensitive material disposed to the fiber optic tube. In another aspect, the horizontal deflection is performed by a stepped method in which the horizontal deflection is stopped during a time interval when one raster of the vertical deflection of the electron beam crosses the phosphors and progresses stepwisely when the vertical deflection is subsequently transferred to the next raster.
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