| 摘要 |
PURPOSE:To improve the maintenability of a key operation part, to prevent the occurrence of a fault caused by the influence of dust from a device main body and temperature and to improve reliability by providing the key operation part on an original-pressing part. CONSTITUTION:The key operation part 5 is provided on an original cover 2. At the time of the exchange of a part, only a frame upper member or a frame lower member is removed to easily exchange the part. Further, the accident of a switch is prevented because there is no influence from a device main body. Since it is not necessary to secure the space for housing the key operation part 5 on the side of the device main body, the device is miniaturized, that is, the space for installation can be reduced. Moreover, a cover covering the top surface of a special function operation part 7 is opened with one operation and simultaneously the special function operation part 7 is floated up in accordance with the opening action, so that an operator is free from a trouble to open the cover and easily sees an operation surface and the operability is improved as well. |
