Photographic composition apparatus

Claim 1

IN PHOTOGRAPHIC TYPE COMPOSING APPARATUS THE COMBINATION OF A CONTINUOUSLY MOVING MATRIX UPON WHICH ARE CARRIED MASTER CHARACTERS, A FIXED OPTICAL SYSEM EFFECTIVE TO PROJECT IMAGES OF THE MASTER CHARACTERS ONTO A FILM PLANE, A CATHODE RAY TUBE POSITIONED IN CLOSED PROXIMITY TO THE CONTINUOUSLY MOVING MATRIX, MEANS FOR FORMING ON THE FACE OF THE CATHODE RAY TUBE A PATCH OF LIGHT POSITIONED TO ILLUMINATE A SELECTED CHARACTER AT THE PRECISE MOMENT WHEN IT WILL BE PROJECTED ONTO THE FILM PLANE IN AN EXACTLY PREDETERMINED POSITION, SAID POSITION CORRESPONDING TO THE TOTAL ACCUMULATED WIDTHS OF ALL THE CHARACTERS AND SPACES PREVIOUSLY COMPOSED ON A LINE, TIMING SLITS CARRIED ON THE CONTINUOUSLY MOVING MATRIX BAND, THE SAID TIMING SLITS SPACED AN INTEGRAL NUMBER OF CHARACTER WIDTH UNITS APART, MEANS TO DETECT THE PASSAGE OF THESE TIMING SLITS PAST A FIXED STATION AND EFFECTIVE TO GENERATE AN ELECTRICAL PULSE AT EACH PASSAGE, MEANS TO COUNT SUCH PULSES AND CONSTANTLY COMPARE THE TOTAL OF SUCH TIMING PULSES TO THE DISPLACEMENT VALUE OF THE CHARACTER TO BE PROJECTED, MEANS TO UNBLANK THE BEAM OF THE CATHODE RAY TUBE AT THE TIME WHERE EQUALITY IS ACHIEVED, AND A FILM HOLDER FOR HOLDING A SENSITIZED SHEET IN THE FILM PLANE.