Method of abnormal state detection for ink jet recording apparat

Details Method of abnormal state detection for ink jet recording apparat Method of abnormal state detection for ink jet recording apparat

1992-10-07

1994-06-07

Hartary, Joseph W.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346140R, B41J 205

Patent

active

053193890

ABSTRACT:
An ink jet recording apparatus records information by ejecting ink droplets onto a recording medium. The ink jet recording apparatus has a recording head; driving circuits, measuring circuit, and a judging unit. The recording head has ejection outlets and ink liquid passages connecting to the ejection outlets respectively, an electro-thermal converting element being disposed in each of the ink liquid passages, for generating thermal energy for ejecting the ink droplets. The driving circuits drive the electro-thermal converting element to generate the thermal energy enough to eject the ink droplet. The measuring circuit individually measures a resistance value of the electro-thermal converting element when the driving circuits drive the electro-thermal converting element. The judging unit judges presence of an abnormal state in the ink liquid passage according to the resistance value.

REFERENCES:
patent: 3771568 (1973-11-01), Bischoff et al.
patent: 4313124 (1982-01-01), Hara
patent: 4313684 (1982-02-01), Tazaki et al.
patent: 4345262 (1982-08-01), Shirato et al.
patent: 4459600 (1984-07-01), Sato et al.
patent: 4463359 (1984-07-01), Ayata et al.
patent: 4489335 (1984-12-01), Watanabe et al.
patent: 4550327 (1985-10-01), Miyakawa
patent: 4558332 (1985-12-01), Takahashi
patent: 4558333 (1985-12-01), Sugitani et al.
patent: 4577203 (1986-03-01), Kawamura
patent: 4625220 (1986-11-01), Nagashima
patent: 4723129 (1988-02-01), Endo et al.
patent: 4740796 (1988-04-01), Endo et al.
patent: 4813802 (1989-03-01), Gilham et al.
patent: 4996487 (1991-02-01), McSparran et al.
T. Ikoma, IBM Technical Disclosure Bulletin, vol. 24, No. 3, "Method to Detect `In Situ` Defects in Nozzles in Ink Jet Printers", p. 1585, Aug. 1981.

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