Incremental printing of symbolic information – Ink jet – Controller
Patent
1996-02-09
1998-05-26
Fuller, Benjamin R.
Incremental printing of symbolic information
Ink jet
Controller
347 9, B41J 2938
Patent
active
057573921
ABSTRACT:
A piezoelectric-type liquid droplet ejecting device including a piezoelectric element. A predetermined voltage pulse is applied to the piezoelectric element, whereupon residual pressure fluctuations are generated in the pressure chamber of the liquid droplet ejecting device. The piezoelectric element or a separate piezoelectric element generates an electric signal corresponding to the residual pressure fluctuations. A detection circuit receives the electric signal and supplies a detection signal corresponding to the electric signal to a calculation circuit for calculating a voltage pulse. The calculation circuit supplies the voltage pulse to a drive circuit, which applies it to the piezoelectric element. The voltage pulse deforms the piezoelectric element upon application thereto in a manner sufficient to compensate for residual pressure fluctuation in the pressure chamber.
REFERENCES:
patent: 4424520 (1984-01-01), Masuda et al.
patent: 4686539 (1987-08-01), Schmidle et al.
patent: 4743924 (1988-05-01), Scardovi
patent: 4972211 (1990-11-01), Aoki
patent: 5016028 (1991-05-01), Temple
patent: 5359350 (1994-10-01), Nakano et al.
Brother Kogyo Kabushiki Kaisha
Dickens Charlene
Fuller Benjamin R.
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