Print cartridge bidirectional alignment in carriage axis

Details Print cartridge bidirectional alignment in carriage axis Print cartridge bidirectional alignment in carriage axis

1991-10-31

1993-10-05

Hartary, Joseph W.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346139R, 346140R, 395105, 400 82, 400323, G01D 1516, B41J 2926

Patent

active

052509567

ABSTRACT:
Apparatus and techniques are disclosed for aligning the operation of the ink jet printheads of a multiple printhead ink jet swath printer, and particularly for aligning the operation of the printheads along the carriage scan axis. The relative positions of vertical test line segments printed by the cartridges at a fixed swath position are determined with an optical sensor. The relative position information is utilized to calculate horizontal alignment corrections for the printhead cartridges which are utilized to adjust the horizontal offset shifts provided for the swath data and to adjust the timing of the firing of the ink jet nozzles of the printhead cartridges.

REFERENCES:
patent: 4755836 (1988-07-01), Ta et al.
patent: 4916638 (1990-04-01), Haselby et al.
"Print Registration Test for Bidirectional Printer" IBM Technical Disclosure Bulletin, vol. 30, No. 10, Mar. 1988, pp. 38-39.

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