| 摘要 |
PURPOSE:To make the density of photographic film uniform even at the pickup of upper limit of pickup conditions, by providing a circuit adjusting the pickup tube voltage upper limit condition with a photo timer for pickup time control and holding means for pickup optimum density conditions, pickup time upper limit condition adjusting circuit and switches. CONSTITUTION:An output of I.I tube is received at a photo detetion section 11, the output is given to a pickup tube voltage set 31 and a motor 32 via a tomographic tube voltage signal generator 18 and a pickup tube voltage signal generator 30, a photo timer 6 gives a stop signal to a terminal 32 for the completion of pickup. In case of the pickup with upper limit pickup conditions such as a split pickup at filling of stomach constant medium, a switch 13 is selected to the tomology side, the tomology condition is stored in a memory circuit 19 at a circuit 24, and a circuit 21 adjusting the voltage upper limit condition at the stored value and a time upper limit condition adjusting circuit 22 are provided for an optimum pickup. |
