Photographic copier having different magnifications

摘要

A photographic copier has a copying station with a platen for a master to be reproduced and a platen for copy material. A straight guide extends across the copying station below the platen for the master and above the platen for the copy material, and a carrier is movable along the guide. The carrier supports several parallel rows of objectives, and the rows extend transverse to the direction of travel of the carrier. The objectives of each row have the same magnification and the magnification decreases successively from row to row, or vice versa. Each row is located at a different level of the carrier with the row of maximum magnification at the highest level and the row of minimum magnification at the lowest level. The objectives have vertical optical axes and the guide is inclined to the optical axes at an angle different from 90 degrees. The row of maximum magnification is disposed at the end of the carrier which faces the lower end of the guide. In order to obtain a particular magnification, the carrier is shifted until the optical axis of an objective having the desired magnification coincides with the optical axis of the copying station. The objective is then spaced from the master platen by a distance equal to the focal length of the objective.