Method and arrangement for maintaining the nozzles of an ink pri

Details Method and arrangement for maintaining the nozzles of an ink pri Method and arrangement for maintaining the nozzles of an ink pri

1996-06-06

1999-07-27

Le, N.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 22, 347 29, B41J 2165

Patent

active

059298774

ABSTRACT:
A microclimate enriched by solvent vapors is produced in the antechamber during print operation and also predominates during the print pauses, the microclimate having a slightly higher pressure than the outer atmosphere. In this way all nozzles are equally protected against drying out. During print pauses of longer duration, the antechamber is closed and, if needed, is rinsed with solvent. The antechamber is formed by the ink print head being set back in relation to the front wall of the housing. In the front wall opposite the nozzles, openings are made whose width is larger than the diameter of a nozzle opening. The antechamber has a trough-shaped area for the inlet and outlet of solvent by capillary action, and a non-capillary area for the solvent vapors. A seal bonnet is provided for sealing during longer print pauses and cleaning processes.

REFERENCES:
patent: 4106032 (1978-08-01), Miura et al.
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patent: 4417259 (1983-11-01), Maeda
patent: 4558332 (1985-12-01), Takahashi
patent: 4638336 (1987-01-01), Hofmann
patent: 4672397 (1987-06-01), Suga et al.
patent: 4736212 (1988-05-01), Oda et al.
patent: 4908636 (1990-03-01), Saito et al.
Patent Abstracts of Japan, Vol. 13, No. 25 (M-787) for Application No. JP870072052.
Patent Abstracts of Japan, vol. 9, No. 111 (M-379) for Application No. JP830108703.

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