| 摘要 |
PURPOSE:To set the proper exposure line amount automatically by performing the arithmetic operation on the basis of the outputs from a distance setter for setting the distance between a line source and a film, objective depth measuring device and a film sensitivity setter. CONSTITUTION:An X-ray generator 1 includes such as X-ray monitor circuit 2, X-ray generating/stopping control circuit 3. The distance setter 3 will set the distance between a line source and a film and produce the output signal corresponding with the distance. The outputs from the distance setter 5, objective depth setter 7, film sensitivity setter 7 and X-ray monitor circuit 2 are proveded to an arithmetic unit 4. Said unit 4 will determine the exposure line amount on the basis of said inputs and control the X-ray generating/stopping control circuit 3 in accordance with said exposure line amount. |
