| 摘要 |
PURPOSE:To obtain recordings of stable quality in a thermosensitive recording device for medium tone prints by a method wherein multistage memories for correcting concentration are provided in order to keep characteristics of concentration constant over all temperatures and outputted on the basis of a detected temperature. CONSTITUTION:When the print start signal PS comes, pulse generation starts at gamma-pulse generating counter gammaCNT. In correcting memory gammanROM there are provided multistage corrective values so that proper characteristics of concentration can be obtained at every step of definite temperature. The corrected output is parallel- series countered by a parallel-series converter P/SMP and switched by multiplexer function to output gamma pulses for generating proper concentration characteristics. At every step of temperature the output from the temperature detector is converted electrically and amplified with an amplifier AMP, the code is converted at multiple stages with an AD coverter, the output is latched in a latching register LATCH and the output of this register is used to change a multiplexer. |
