Photo printing process

Claim 1

A PHOTOGRAPHIC METHOD CONSISTING OF RECORDING A PLURALTIY OF INTERSECTING PATTERN IMAGES IN PHOTO SENSITIVE MATERIAL BY SUCCESSIVE PARTIAL EXPOSURES SUBSTANTIALLY IN SHARP FOCUS ON SAID PHOTOSENITIVE MATERIAL WITH THE EMPLOYMENT OF A PLURALTIY OF PATTERN IMAGE MEMBERS, EACH OF SAID PATTERN IMAGE MEMBERS HAVING ONLY TWO TONES REPRESENTING SUBSTANTIALLY COMPLETE OPACITY AND SUBSTANTIALLY COMPLETE TRANSPARENCY, RESPECTIVELY, ONE OF SAID PART EXPOSURES BEING MADE BY EMPLOYING ONLY ONE PATTERN IMAGE AND ANOTHER PART EXPOSURE BEING MADE BY EMPLOYING A PLURALITY OF SUPERIMPOSED PATERN IMAGE MEMBERS INCLUDING SAID ONE MEMBER, ANY PATTERN IMAGE MEMBER EMPLOYED IN MORE THAN ONE PART EXPOSURE BEING HELD IN THE SAME POSITION WITH REGARD TO ITS EXPOSURE EFFECT UPON SAID PHOTO SENSITIVE MATERIAL DURING EACH PART EXPOSURE IN WHICH IT IS EMPLOYED, EACH PART EXPOSURE PRODUCING ON SAID PHOTO SENSITIVE MATERIAL A PHOTOGRAPHIC IMPRESSION RETAINED DURING SUBSEQUENT PART EXPOSURES, ONE OF SAID PART EXPOSURES BEING OF DIFFERENT EXPOSURE VALUE THAN ANOTHER AS DETERMINED BY THE PRODUCT OF TIME DURATION OF EXPOSURE AND LIGHT INTENSITY OF EXPOSURE.