Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1985-08-30
1987-01-06
Hartary, Joseph W.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
346160, 346161, 346110R, G01D 1506, G01D 912
Patent
active
046350721
ABSTRACT:
The invention provides a method for compensating synchronization errors in non-impact printers, without influencing the transport of the record carrier and without changing the printing frequency of the printing elements. A control value is derived from a difference between the actual transport speed and a predetermined transport speed of the record carrier. This control value is used to vertically deflect the recording beam, after each picture line, by a fraction of the predetermined picture line spacing. The sum of the cumulative vertical deflections are compared with the value of the picture line spacing, and the recording of the next picture line is delayed by one deflection period of the recording beam when the sum is greater than or equal to the value of the picture line spacing.
REFERENCES:
patent: 3155022 (1964-11-01), Schwertz
patent: 4134668 (1979-01-01), Coburn
patent: 4134668 (1979-01-01), Coburn
patent: 4367943 (1983-01-01), Nakamura
patent: 4412230 (1983-10-01), Goldberg
patent: 4459512 (1984-07-01), Ohhata
Conrads Norbert
Kirchhoff Rolf
Schiebel Ulrich
Hartary Joseph W.
Peco Linda M.
Treacy David R.
U.S. Philips Corporation
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