Ink printer head

Details Ink printer head Ink printer head

1989-08-14

1990-06-26

Miller, Jr., George H.

Recorders

Markers and/or driving means therefor

With ink supply to marker

346 75, G01D 1518

Patent

active

049375962

ABSTRACT:
A head part comprising ink ejection channels in the ink printer head is cast into an outer mount with a rubber-elastic casting compound. A silanization layer is situated on the side of the discharge openings of the ink ejection channels. The hydrophobic effect of this silanization layer is intensified by silicone fluid added before the casting of the casting compound, since the silicone fluid diffusing out of the casting compound and later spreads by creeping and forms a layer of silicone fluid on the silanization layer. The layer of silicone fluid is constantly replenished from the inside of the casting compound. The layer of silicone fluid also simultaneously protects the silanization layer against hydrolysis. The instant invention is suitable for all ink printer heads that operate with aqueous ink.

REFERENCES:
patent: 4195304 (1980-03-01), Gudorf
patent: 4368476 (1983-01-01), Uehara et al.
patent: 4734706 (1988-03-01), Le et al.

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