Print head assembly acceleration control method

Details Print head assembly acceleration control method Print head assembly acceleration control method

1988-09-01

1989-05-02

Goldberg, E. A.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 75, 346 76PH, 346140R, 346139R, 400320, 400323, 400328, G01D 900, G01D 1518, B41J 1930

Patent

active

048272825

ABSTRACT:
A control method for providing an acceptable motion window (range) that restricts high accelerations and velocities of an ink jet print head. The method provides two limited step ranges that are initiated dependent on the total distance that the print head is to be moved. If the distance is outside of the window range, a first step is used to bring the print head to a position which is a fixed second step from the final position. By limiting the print head's motion in each step range, the excitation of the fluid (ink) system is limited. With the first step completed, a second step range is used to drive the print head to the final position. If the initial distance is within the window range, the second step range is selected to drive the print head. The method is implemented with a computer program and print head position signals.

REFERENCES:
patent: 4050564 (1977-09-01), Carmichael et al.
patent: 4167013 (1979-09-01), Hosmins et al.
patent: 4179223 (1979-12-01), Kwan et al.
patent: 4469460 (1984-09-01), Hughes et al.

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