Objective mounting means for projection printers

Claim 1

A PHOTOGRAPHIC PROJECTION PRINTER COMPRISING, IN COMBINATION, AN ORIGINAL HAVING AN ELONGATE SCALE THEREON, AN ELONGATE PRINT-RECEIVING MEMBER HAVING A LIGHT SENSITIVE SURFACE, SUPPORT MEANS FOR HOLDING SAID ORIGINAL AND SAID PRINTRECEIVING MEMBER IN SPACED, PARALLEL AND FIXED RELATION TO EACH OTHER, AN OPTICAL PROJECTION SYSTEM HAVING THREE CONJUGATE PLANES, ONE AT SAID SCALE, ONE AT SAID LIGHT SENSITIVE SURFACE, AND A THIRD MIDWAY BETWEEN THE FIRST TWO, MEANS FOR IMPARTING SUBSTANTIALLY UNIFORM RELATIVE MOTION BETWEEN SAID SUPPORT MEANS AND SAID OPTICAL SYSTEM IN A DIRECTION ALONG THE LENGTH OF SAID SCALE, SAID OPTICAL SYSTEM INCLUDING A PAIR OF MICROSCOPE OBJECTIVES, ONE FOCUSED ON SAID SCALE AND THE OTHER FOCUSED ON SAID LIGHT SENSITIVE SURFACE, AND MEANS MOVABLY MOUNTING SAID OBJECTIVES ALONG PATHS PERPENDICULAR TO THE PATH OF RELATIVE MOVEMENT BETWEEN SAID OPTICAL SYSTEM AND SAID SUPPORT MEANS AND INCLUDING MEANS FOR MOVING SAID OBJECTIVES ALONG THEIR RESPECTIVE PATHS PERPENDICULAR TO THE PATH OF RELATIVE MOVEMENT BETWEEN SAID OPTICAL SYSTEM AND SAID SUPPORT MEANS IN RESPONSE TO RELATIVE MOVEMENT BETWEEN THE OPTICAL SYSTEM AND THE SUPPORT MEANS TO SUPPORT MEANS.