Photographic-type printing device

Claim 1

A PHOTOGRAPHIC TYPE PRINTING DEVICE COMPRISING A PRINTING SECTION WITHIN AN ENCLOSURE, A CHARACTER STRIP POSITONED BELOW THE PRINTING SECTION, AND ADJUSTABLE CASETTE POSITIONED A DISTANCE BELOW THE CHARACTER STRIP SO THAT AN IMAGE OF A CHARACTER MAY BE VIEWED PRIOR TO A PRINTING OPERATION, AT LEAST ONE LIGHT SENSITIVE SHEET CARRIRED WITHIN THE CASETTE, SAID PRINTING SECTION INCLUDING A LAMP FOR PROVIDING ILLUMINATION TO AID IN ADJUSTING THE RESPECTIVE POSITIONS OF THE CHARACTER STRIP AND THE LIGHT SENSITIVE SHEET, SAID PRINTING SECTION ALSO INCLUDING A COLLIMATING LENS FOR PRODUCING PARALLEL LIGHT RAYS WHICH PASS THROUGH TRANSPARENT PORTIONS OF THE CHARACTER STRIP AND CAST AN IMAGE THEREOF ON THE SENSITIVE SHEET, A REMOVABLE LIGHT FILTER ALSO IN THE PRINTING SECTION FOR PASSING NONACTINIC LIGHT WHEN THE SENSITIVE SHEET IS BEING ASJUSTED, A MANUALLY ADJUSTABLE MEANS FOR RAISING AND LOWERING THE PRINTING SECTION, SAID MEANS ALSO MECHANICALLY COUPLED TO THE CASETTE TO LOWER AND RAISE THE SENSITIVE SHEET FOR SEPARATING THE CHARACTER STRIP AND THE SENSITIVE SHEET FOR OBSERVATION AND FOR BRINGING THE STRIP AND SHEET INTO CONTACT WHEN A PRINTING OPERATION IS TO BE PERFORMED, AND ELECTRIC CIRCUIT MEANS FOR ACTIVATING SAID LAMP ONLY WHEN THE CHARACTER STRIP IS IN CONTACT WITH THE LIGHT SENSITIVE SHEET.