Apparatus and method for ink jet recording

Details Apparatus and method for ink jet recording Apparatus and method for ink jet recording

1998-02-20

2000-11-14

Le, N.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

G01D 1100

Patent

active

061459771

ABSTRACT:
The present invention provides an ink jet printer which performs recording by causing a nozzle to discharge an ink drop onto a recording medium. The nozzle is connected to an ink channel in which aqueous ink is housed. The printer head can vary the dot size on the recording medium by changing the size of the drop that is discharged from the nozzle. The aqueous ink has a degree of surface tension change .DELTA.S that is expressed by the relation .DELTA.S=(S.sub.1 -S.sub.3)/ S.sub.2 of 0.3 or less, wherein S.sub.2 is the surface tension at 25.degree. C., and has a value of 20 to 50 dynes/cm, S.sub.1 is the surface tension at 5.degree. C., and S.sub.3 is the surface tension at 40.degree. C.

REFERENCES:
patent: 4965612 (1990-10-01), Sakaki et al.
patent: 5156675 (1992-10-01), Breton et al.
patent: 5160372 (1992-11-01), Matrick
patent: 5208605 (1993-05-01), Drake
patent: 5397386 (1995-03-01), Nakazawa et al.
patent: 5412410 (1995-05-01), Rezanka

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