Control system for high speed printers

Claim 1

IN A DATA PRINTER, A PLURALITY OF PRINT HAMMERS, AN ELECTROMAGNETIC COIL ADJACENT EACH HAMMER AND OPERABLE WHEN ENERGIZED TO ACTUATE SAID HAMMER, A FIRST SWITCHING MEANS ASSOCIATED WITH EACH COIL, A CAPACITOR FOR EACH COIL CONNECTED IN SERIES WITH THE COIL AND THE ASSOCIATED SWITCHING MEANS, A SOURCE OF CURRENT, SECOND SWITCHING MEANS HAVING A FIRST STATE AND A SECOND STATE AND CONNECTED IN SERIES WITH SAID SOURCE AND EACH OF SAID CAPACITORS TO SUPPLY CHARGING CURRENT TO SAID CAPACITORS IN ITS FIRST STATE AND TO INTERRUPT THE CURRENT IN ITS SECOND STATE, PRINT CYCLE CONTROL MEANS FOR ACTUATING SAID SECOND SWITCHING MEANS FIRST TO ITS SECOND STATE AND THEN TO ITS FIRST STATE AFTER A PREDETERMINED INTERVAL, AND MEANS OPERABLE DURING SAID INTERVAL TO ACTUATE SAID FIRST SWITCHING MEANS TO DISCHARGE EACH CAPACITOR THROUGH ITS ASSOCIATED COIL TO ACTUATE THE PRINT HAMMERS.