| 摘要 |
PURPOSE:To prevent failure of starting after long idle running and to feed oil in accordance with the width of paper by changing the driving period of plural oil pumps supplying oil to oil-impregnated material wiping off the dirt of toner on a heat roll which is divided in the width direction. CONSTITUTION:Dirt due to toner which is generated on the heat roll 2 fixing a toner image on paper 1 is wiped off by the oil-impregnated agent 4. During the idle running of the roll 2, oil included in a contact part between the roll 2 and the oil-impregnated agent 4 is dried because of the high temperature of the roll 2. Therefore, a valve 5 is opened every prescribed timing to drive an oil pump 6 and supply oil to an oil tank 7, so that the oil is prevented from being dried. At the time of printing, only a pump feeding oil to a part contacting with the paper 1 out of plural pumps 6 is driven at a proper timing period in accordance with paper width information detected by a paper width detecting means. Thus, the generation of the failure of starting of the roll 2 after long idle running is prevented and the proper quantity of oil corresponding to the width of the paper to be used can be fed. |
