| 摘要 |
PROBLEM TO BE SOLVED: To make the exposed area of a photoreceptor drum in a photoreceptor cartridge as small as possible. SOLUTION: In this photoreceptor cartridge 3, the photoreceptor drum 13 is rotatably arranged in inner space surrounded by the bottom wall 30a, the upper wall 30b and the side walls of a case 30 functioning as a housing, while the lower part of a transfer roller 14 arranged to ascend/descend under the drum 13. is covered with the wall 30a. An introducing port 51a and an exit 51b for paper passing through a transfer part 52 are formed on the side of the wall 30a. Many ribs 53 extended toward the transfer part 52 from the port 51a are made to project to the upper surface of the wall 30a so as to attain a paper guiding function and to improve rigidity. |
