Belt synchronous check system for a line printer

Details Belt synchronous check system for a line printer Belt synchronous check system for a line printer

1982-09-08

1985-01-08

Smith, Jerry

Excavating

B41J 120

Patent

active

044930844

ABSTRACT:
A line printer which comprises a standard type-belt (1) having a plurality of character sets (2), clock (CL) marks for individual characters, and home position (HP) marks for each character set. Further, the line printer comprises a belt image memory (13') for storing the character codes of the characters of the type-belt (1). Flag bits are inserted at positions of the belt image memory (13') corresponding to the reference marks of the character sets (2). Further, the output (HP-D) of the belt image memory (13') is compared with the output (HP) of the type-belt (1) to perform a belt synchronous check.

REFERENCES:
patent: 3066601 (1962-12-01), Eden
patent: 3845709 (1974-11-01), Gardiner
patent: 4027764 (1977-06-01), Kashio
patent: 4425844 (1984-01-01), Carrington et al.
Burke et al., Print Error Detector, IBM Technical Disclosure Bulletin, vol. 13, No. 3, 8/70, p. 664.
IBM Technical Disclosure Bulletin, "Automatic Belt Recognition and Character Sequencing in a Belt Printer", by Faflak et al., vol. 16, No. 8, 1/74, pp. 2431-2432.

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