| 摘要 |
PURPOSE:To move a lens in accordance with the instruction signal of an instruction switch part, and to change over rotation speed of a copy controlling motor, by installing the instruction switch part for changing over and sending an instruction signal for instruction of copying magnification and a retrieval switch part for sending the retrieval signal of a lens position. CONSTITUTION:An instruction signal for instruction for copying magnification is changed over and sent from the instruction switches Swa, Swb, Swc of the instruction switch part 5, and on the other hand, when an optical lens is located at the position of a size nonchanging position, an enlarging position, and a contracting position, a retrieval signal is sent at each time from the retrieval output terminals x', y', z' of the retrieval switch 6. A discrimination controller 8 discriminates the control rotation direction of a lens moving motor from an instruction input terminal having received the instruction signal and from a retrieval input terminal having received the retrieval signal, and sends the rotation control signal for the lens moving motor until the retrieval signal is received to the retrieval input terminal corresponding to the instruction input terminal having received the instruction signal. |
