Printing – Selective or progressive – Bed and platen machines
Patent
1976-06-21
1977-11-15
Coven, Edward M.
Printing
Selective or progressive
Bed and platen machines
101 91, 235432, 235487, B41J 122
Patent
active
040580563
ABSTRACT:
In this full duplex card reader/printer, a transport mechanism carries a card first past a read head at a constant rate and then incrementally past a printer. Under microprocessor control a message is printed on the card which is responsive to data read from the same card. A first transducer associated with the drive transport mechanism provides "read sprocket" pulses that are utilized by the microprocessor to ascertain the presence under the read head of a card data column. Stepping of the card past the printer is enabled by the microprocessor when a responsive message is ready for printing. As the card is stepped to each new print position, a "move sprocket" pulse is transmitted to the microprocessor. The microprocessor then compares the next message character with the character available for printing, as indicated by a set of pulses supplied from the printer. When these are the same, the microprocessor generates a command to print the character.
REFERENCES:
patent: 3037447 (1962-06-01), Gonzalez et al.
patent: 3294956 (1966-12-01), Jenkins et al.
patent: 3465866 (1969-09-01), Gehring et al.
patent: 3650204 (1972-03-01), Burger et al.
patent: 3659524 (1972-05-01), Beery et al.
patent: 3790757 (1974-02-01), Shaw
patent: 3973486 (1976-08-01), Pylant
patent: 3978964 (1976-09-01), Kwan
IBM Tech. Disclosure Bulletin, vol. 13, No. 11, "Sensing Holes and Marks", G. Crovatto, 4/1971, p. 3561.
Coven Edward M.
Sensor Technology, Inc.
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