| 摘要 |
PROBLEM TO BE SOLVED: To reduce production cost by simply producing an outside case cover without reducing a soundproof effect, in an image forming device having soundproof stracture on the outside case cover. SOLUTION: This image forming device is constituted so that for instance, a rear outside case cover 11 for covering the back side of a copying machine main body is molded by blowing, then, a liquid chamber 15 is formed along a plate surface inside the rear outside case cover 11 and filled with a liquid 20 such as water and an inlet 16 and an outlet 17 for the liquid 20 are stopped up with caps 18 and 19 made of rubber. At the time of operation the rear outside case cover 11 shuts out a noise generated in the copying machine main body, after the liquid chamber 15 is filled with the liquid 20, to prevent the noise from leaking out. |
