Electronic tabulator for high speed printers

Details Electronic tabulator for high speed printers Electronic tabulator for high speed printers

1975-08-12

1977-10-04

Burr, Edgar S.

Textiles: fiber preparation

197 19, 307 66, 340173DR, B41J 2100, H02J 906

Patent

active

040519457

ABSTRACT:
An electronic tabulator for use in non-impact printers and similar data terminal printout apparatus includes a random access memory (RAM) having a capability of storing the maximum of printing carriage positions to be tabulated at random order in response to TAB preset instructions, which in one preferred form may be implemented with MOS integrated circuit technology. While the carriage is moved in incremental steps along a given path in the course of the printing operation, address signals representative of the instantaneous positions of the carriage are developed from a carriage address counter. If there is evaluated an equivalence between the address signal and the preset signal of the memory, the memory produces its output which is in turn applied to the carriage bearing a printing member to indicate that the printing operation should be effected at that position. Because of the volatile nature of the MOS integrated circuit memory in the event of power failure and the like, a rechargeable battery is provided which activates the memory to retain the contents thereof even when power is off.

REFERENCES:
patent: 3705392 (1972-12-01), Appelt
patent: 3812945 (1974-05-01), Koplow et al.
patent: 3832697 (1974-08-01), Kashio
patent: 3859638 (1975-01-01), Hume
patent: 3885663 (1975-05-01), Suzuki

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