| 摘要 |
PROBLEM TO BE SOLVED: To prevent the image flow (obscured image) by unifying the temperature of a surface of a drum base, by bringing opposite sides of a rectangular sheet-shaped heater very close to each other to form a drum, installing the heater on an inner circumferential face of the drum base, and installing a spring member between the opposite sides, for expanding an interval therebetween. SOLUTION: A photoreceptor 7 is obtained by forming a photosensitive layer 3 composed of amorphous silicon, on an outer peripheral face of a drum base 2, bringing the opposite sides of a rectangular sheet-shaped heater 8 very close to each other to form a drum, and installing the heater 8 on the inner circumferential face of the drum base 2. A spring member for expanding an interval between the opposite sides, is installed between the opposite sides. The stress for increasing a diameter of the heater 8, is acted by the action of the spring. Thereby the almost whole peripheral face of the heater 8 is brought into contact with the inner circumferential face of the drum base 2, and the temperature of the drum base 2 is unified, to prevent the image flow. |
