| 摘要 |
PROBLEM TO BE SOLVED: To provide an image formation device capable of improving operability when a user operates to turn an operation display section.SOLUTION: An image formation device includes a turning member 51 having an operation display section 50 and having a plurality of holding grooves 25 to 28 arranged on the same circumference centering a turning axis 53 of a side face 51a made of a plane perpendicular to a turning axis 53 and turning around the turning axis 53, and a fixing member 54 arranged on a device frame and movably urged with a coil spring 56 to the side face 51a of the turning member 51 in a vertical direction and fixing a turning position of the turning member 51 by being fitted into the holding grooves 25 to 28. The holding grooves 25 to 28 have a pair of opposite inclined surfaces 25a, 25b to 28a, and 28b made of twisted curved surfaces created with tracks made under movements of an arbitrary straight line x from bottom ends 25c to 28c of the holding grooves 25 to 28 to ceiling ends 25d to 28d of the holding grooves 25 to 28 when the holding grooves are turned around the turning axis 53 in a fixed direction while the arbitrary straight line x perpendicular to the turning axis 53 is moved in the fixed direction along the turning axis 53. |
