| 摘要 |
PURPOSE:To use different kinds of business forms without removing them from devices, by providing a plurality of continuous business form feed devices and a power switching mechanism for selecting one of the feeding devices and transmitting power to it and for feeding or retracting the business forms. CONSTITUTION:A plurality of tractor mechanism 2A, 2B, 2C are disposed in the state that they are overlapped vertically and business form sensing means 5A, 5B, 5C for sensing that respective business forms 1A, 1B, 1C pass through are disposed downstream of a direction toward which the business forms 1A, 1B, 1C are fed. Guides 6A, 6B, 6C of different lengths are equipped with the tractor mechanisms 2A, 2B, 2C for preventing interference among the business forms. A changeover switch enables any one of the tractor mechanisms to operate for feeding a desired printing form and one printing job is completed. When a job for a different business form is to be performed, one of the previously selected changeover switches causes the business form currently fed to be returned to a corresponding sensing means. After it is confirmed that the business form has been retracted, it is transferred to another tractor mechanism. With such an arrangement, different kinds of business forms can be used without removing them from devices.
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