| 摘要 |
PURPOSE:To keep the relation between the end of an original and the end of a transfer material constant in case of performing at least 3 kinds or continuous designation of magnification, by using a lens moving mechanism along a parallel linking mechanism and a prescribed guiding member for a variable magnification mechanism. CONSTITUTION:A guide pin 19 is formed on a lens holding member 11 and a guiding member in the channel cam shape 20 is formed on a base 13, in order to make a positioning by moving a lens also to (y) direction to image-form the side end of an original image at the same position 2 of the photosensitive surface at any magnification, when the lens is moved to (x) direction. The optical axis of the lens is moved without being inclined in a lens operating mechanism. The side end of the original in a scanning direction and a vertical direction is placed in accord with a position 6 of an original base at the time of any magnification among 3 kinds. The position of a lens is not arranged on a straight line, but arranged on each position of unmagnification 7, magnification 8 and reduction 9. |
