High speed drum printer with stepping motor to advance drum and paper

Abstract

Abstract SIGNALS, A COUNTING DEVICE FOR APPLYING DRUM POSITION INDICATING SIGNALS TO EACH OF SAID COMPARING DEVICES, MEANS FOR APPLYING DATA SIGNALS TO EACH OF SAID COMPARING DEVICES, PULSING MEANS FOR CONCURRENTLY CAUSING STEPPING OF SAID COUNTING DEVICE AND SAID COUNTER, MEANS OPERABLE BY SAID STEPPER MOTOR DURING MOVEMENT OF A SECOND PART OF SAID PERIPHERY OF SAID DRUM PAST SAID PRINTING DEVICES FOR ADVANCING SAID RECORD MEDIUM FROM ONE LINE PRINTING POSITION TO A NEXT, MEANS CONTROLLED BY SAID DRUM AFTER SAID ADVANCEMENT OF SAID RECORD MEDIUM FOR PROVIDING AN INDEX SIGNAL, AND MEANS RESPONSIVE TO SAID INDEX SIGNAL FOR RENDERING SAID PULSING MEANS INEFFECTIVE. 1. A DATA PRINTER COMPRISING A ROTATABLE TYPE DRUM HAVING A PLURALITY OF COLUMNS OF TYPE CHARACTERS THEREON, SAID TYPE CHARACTERS EXTENDING ABOUT A FIRST PART ONLY OF THE PERIPHERY OF SAID DRUM, PRINTING DEVICE ASSOCIATED WITH RESPECTIVE ONES OF SAID COLUMNS FOR TRANSFERRING AN IMPRINT OF ANY OF SAID TYPE CHARACTERS IN RESPECTIVE ONES OF SAID ROWS ONTO A RECORD MEDIUM, A STEPPER MOTOR FOR INCREMENTALLY ROTATING SAID TYPE DRUM TO SUCCESSIVELY POSITION DIFFERENT ONES OF SAID TYPE CHARACTERS IN PRINTING RELATION TO SAID PRINTING DEVICES. COMPARING DEVICES FOR COMPARING DRUM POSITION INDICATING SIGNALS AND DATA SIGNALS AND FOR CAUSING OPERATION OF RESPECTIVE ONES OF SAID PRINTING DEVICES WHEN SAID DRUM POSITION INDICATING SIGNALS CORRESPOND TO SAID DATA

Inventors

• 👤 J Clary

Bibliographic Details