| 摘要 |
PURPOSE:To substantially eliminate an evil of increasing the number of kinds of an apparatus, by constituting the whole copying process executing apparatus for changing the operating condition, or a condition changing means as to a part of them and the remaining apparatus, of a unit which is freely attachable and detachable. CONSTITUTION:A variable magnification copying machine constitutes a magnification correcting lens 31, an image forming lens 24, a position changing means 32, a drum charging device 4, an exposure quantity correcting unit 33, and a rotating speed changing means 34 of a drum 1, of 1 unit. In this case, as for the rotating speed changing means 34 of the drum 1, a projecting piece is provided on the interior side of a chassis 30. In this way, in a user's side, a copying machine itself, a unit for unmagnification copying, which is used most frequently, and a variable magnification unit of a desired kind are prepared for use, and a unit of desired magnification is installed to the copying machine body at a high speed. In this way, an evil of increasing the number of kinds of apparatus can be eliminated substantially. |
