Apparatus for printing selected sections of a printing form

Claim 1

IN A PRINTING MACHINE, IN COMBINATION, PRINTING ROLLER MEANS HAVING AN AXIS OF ROTATION AND INCLUDING MEANS FOR HOLDING A PRINTING FORM HAVING SECTIONS FOR COLUMNS OR LINES OF CHARACTERS EXTENDING PARALLEL TO SAID AXIS AND DISPOSED AROUND THE PERIPHERY OF SAID PRINTING ROLLER MEANS, SAID PRINTING ROLLER MEANS HAVING A PERIPHERAL CIRCULAR SURFACE PORTION FOR SUPPORTING THE PRINTING FORM AND EXTENDING OVER A CIRCUMFERENTIAL ARC OF PREDETERMINED CIRCUMFERENTIAL LENGTH CORRELATED WITH THE CIRCUMFERENTIAL EXTENSION OF THE PRINTING FORM; COUNTER PRESSURE ROLLER MEANS HAVING AN AXIS OF ROTATION PARALLEL TO SAID AXIS OF ROTATION OF SAID PRINTING ROLLER MEANS AND HAVING A PERIPHERAL SURFACE WHOSE CIRCUMFERENCE IS AT LEAST EQUAL TO SAID PREDETERMINED CIRCUMFERENTIAL LENGTH, SAID PERIPHERAL SURFACE DEFINING WITH SAID PRINTING ROLLER MEANS A PRINTING PLANE PASSING THROUGH SAID AXES OF SAID ROLLER MEANS; A PLURALITY OF PRINTING MEMBERS HAVING A NUMBER CORRESPONDING TO THE GREATEST NUMBER OF SECTIONS TO BE PRINTED, BEING ELONGATED IN AXIAL DIRECTION, DISPOSED ABOUT THE PERIPHERY, AND MOUNTED ON SAID PERIPHERAL SURFACE OF SAID COUNTERPRESSURE ROLLER MEANS ALONG A CIRCUMFERENTIAL ARC HAVING SUBSTANTIALLY SAID PREDETERMINED LENGTH MOVABLE IN RADIAL DIRECTION BETWEEN A RETRACTED INOPERATIVE POSITION AND AN ADVANCED PRINTING POSITION, SAID PRESSURE FACES BEING NARROW AND ELONGATED, EXTENDING IN AXIAL DIRECTION OF SAID PRINTING ROLLER MEANS AND DEFINING IN SAID ADVANCED PRINTING POSITIONS OF THE RESPECTIVE PRINTING MEMBERS A PRINTING LINE WITH THE PERIPHERAL SURFACE OF SAID PRINTING ROLLER MEANS WHEN PASSING THROUGH SAID PRINTING PLANE WHEREBY COPY SHEETS SUPPLIED TO THE BIGHT BETWEEN A PRINTING FORM ON SAID PRINTING ROLLER MEANS AND SAID COUNTER PRESSURE ROLLER MEANS AND PASSING THROUGH SAID PRINTING LINE ARE IMPRINTED ONLY BY SECTIONS OF SAID PRINTING FORM LOCATED BETWEEN THE RESPECTIVE CORRESPONDING PRESSURE FACES OF SAID PRINTING MEMBERS IN SAID PRINTING POSITION AND THE PERIPHERAL SURFACE OF SAID PRINTING ROLLER MEANS; AND CONTROL MEANS FOR SELECTIVELY MOVING EACH OF SAID PRINTING MEMBERS TO AND FROM SAID PRINTING POSITION THEREOF FOR SELECTING DESIRED SECTIONS OF SAID PRINTING FORM FOR PRINTING.