| 摘要 |
PURPOSE:To effectively utilize a light beam and to shorten a printing time by narrowing the deflection angle of a raster at the time of printing a photograph with a deflection angle switching means of the raster and making a CRT emit a light in a size corresponding to the screen of a film. CONSTITUTION:When a controller 22 receives a printing command, it connects switches 24 and 25 to a contact (b) and actuates a synchronizing signal generation circuit 26. The circuit 26 generates a synchronizing signal whose synchronism is short and inputs it in a 2nd deflection control circuit 33, which outputs vertical and horizontal deflection signals and sends them to the deflection yoke 31 of the CRT 16 through the switch 25. The deflection angle in the light emission area of the CRT 16 is narrowed corresponding to the size of a photographic film. Then, the number of times of scannings by an electron beam per a unit time is increased and the luminance of light emission of the CRT is enhanced. Thus, the light beam of the CRT can be effectively utilized and the time for printing a photographic picture can be shortened.
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