| 摘要 |
PURPOSE:To suppress a temperature applied to a photosensitive material to a prescribed temperature so that a uniform development can be executed, by compensating a temperature fall on the surface of a heating drum due to the low temperature part of an endless belt at the time of starting image recording, by raising the set temperature of the heating drum. CONSTITUTION:As soon as the rotation of a heating drum 14 and the endless bet 16 is started simultaneously with a start of image recording, the set temperature of a heating drum 14 is raised to a temperature (raised temperature) higher than a prescribed developing temperature, and the temperature fall of the surface of the heating drum 14 due to low temperature part of the endless belt 16. Subsequently, the heating drum 14 rotates and after the time to the extent that the low temperature part of the endless belt 16 is brought into contact entirely with the heating drum 14 is lapsed, the set temperature is returned to a prescribed developing temperature 140 deg. by a timer, or the set temperature is lowered after detecting a fact that the surface temperature of the heating drum 14 is 140+1.5 deg.C, and a regular heat development is executed. In such a way, the temperature fall of the surface of the heating drum is compensated, and a sufficient developing heating value can be given to a photosensitive material.
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