| 摘要 |
PROBLEM TO BE SOLVED: To constantly and properly transmit rotation of a driving shaft to a driven shaft without causing deformation and damage to the driving shaft itself and the driven shaft itself. SOLUTION: A relative positional relation of a bearing 30 to axially support a driving shaft 23 and a bearing 31 to axially support a driven shaft 24 is specified by a positioning member 27 by positioning the positioning member 27 fixing the bearing 31 to axially support the driven shaft 24 through a driven shaft coupling 26 by the bearing 30 to axially support the driving shaft 23. When a picture image forming unit frame 37 on which a photosensitive body drum 222 is mounted is inserted into a back surface side in the inside of a picture image formation device main body, an outer peripheral surface of the driven shaft coupling 26 firstly makes contact with an inner peripheral surface of the bearing 31 fixed on a front surface side end part of the positioning member 27, and when the picture image forming unit frame 37 is further inserted to the back surface side, the driven shaft coupling 26 is engaged with a driving shaft coupling 25 and connection of the driving shaft 23 and the driven shaft 24 is completed. |
