(19)
(11) EP 0 055 526 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.01.1984 Bulletin 1984/04

(43) Date of publication A2:
07.07.1982 Bulletin 1982/27

(21) Application number: 81305683

(22) Date of filing: 02.12.1981
(84) Designated Contracting States:
DE FR GB

(30) Priority: 29.12.1980 US 221134

(71) Applicant: COMPUTER PERIPHERALS INC.
 ()

(72) Inventors:
  • Wardzinski, Louis Thomas
     ()
  • LaPonsey, Stephen Michael
     ()

   


(54) A hammer control device for a band printer


(57) A hammer control system for a band printer has a micro-processor (12) receiving character information and having an address (ADR) and a data bus (BUS) output together with a timing output. The microprocessor controls an optioning scheme used in the printer. A decoder (16) is connected with the address output of the microprocessor and a print line buffer (20) provides a stored print data output for subsequent comparison and printing connected with said decoder. A compare circuit (22) receives the output of the print line buffer and receives data from the microprocessor. A shift register (28) receives a compare signal from the compare circuit and a shift control signal from the microprocessor. A hammer driver device (30) causes printing to occur in response to the output of the shift register.






Search report