| 摘要 |
<p>PURPOSE:To perform kind change-over work within a short time, by such simple operation that the driving time of a light emitter is changed corresponding to film sensitivity only by pressing a kind selecting key. CONSTITUTION:Kind selecting keys 9, 10 are pushed corresponding to the kind of a photographic film and film sensitivity is indicated. The kind selecting signals (g), (h) latched by a latch 22 are inputted to a counter 23 and one low in film sensitivity is set to a large preset value while one high in film sensitivity is set to a low value. The clock signal (a) generated in a transmitter 24 passes a gate 25 while a clock signal (d) is counted by the counter 23 and, when reaching the preset value, a signal (e) is outputted. A counter 26 closes the gate 25 when five signals (e) are inputted and is cleared with the light emitting order signal (b) from a microcomputer 13 is inputted to again open the gate 25. The light emitting film of a light emitting apparatus 4 is changed corresponding to the cycle of the signal (e).</p> |
