| 摘要 |
PURPOSE:To provide the title apparatus rapidly and accurately preventing the temp. rise of a paper surface at the time of a decrease in a printing speed. CONSTITUTION:In the dryer of a printing machine equipped with a direct combustion type deodorizing apparatus, a heat recovery apparatus 9 heating the hot air in a dryer by the exhaust gas of said apparatus 8 and the bypass line 20 bypassing the heat recovery part of the heat recovery apparatus to be connected to a hot air nozzle and having a damper 21 controlled on the basis of the surface temp. of printing paper to be opened and closed, a bypass line 31 bypassing the heat recovery apparatus 9 to be connected to a discharge part and having a damper 33 controlled on the basis of the surface temp. of the printing paper to be opened and closed is provided to the line supplying exhaust gas to the heat recovery apparatus 9. |
