Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1995-02-23
1997-07-08
Lund, Valerie
Incremental printing of symbolic information
Ink jet
Ejector mechanism
216 47, B41J 2135, B41J 216
Patent
active
056466579
ABSTRACT:
A nozzle plate has a repellent film formed on or over a nozzle sheet. The repellent film is made by adding an emulsion polymer ultraviolet ray absorbent agent to a fluorine-based polymer. In this nozzle plate, an out-of-roundness of a nozzle formed on the repellent film side of the nozzle plate is smaller, so that variations in the propulsion direction of the ejected ink drops are reduce. Particularly, when the weight percentage of the emulsion polymer ultraviolet ray absorbent agent exceeds 20%, the shape of the nozzle hole formed on the water and oil repellent film side of the nozzle plate has a roundness of 2 .mu.m or less. Accordingly, few variations in the propulsion direction of the ejected ink drops occur, providing superior print quality.
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"Ultraviolet Laser Ablation of Organic Polymers", R. Srinivasan et al., Chem. Rev. 1989, 89, pp. 1303-1316.
Brother Kogyo Kabushiki Kaisha
Lund Valerie
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