Ink jet recording apparatus

Details Ink jet recording apparatus Ink jet recording apparatus

1987-09-02

1989-07-18

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

106 22, G01D 1516

Patent

active

048497738

ABSTRACT:
A liquid ink composition having a sodium ion concentration between about 0.001 and 0.2% by weight or ink tank formed of resin or synthetic rubber containing between about 10 and 100 ppm of fatty acid or fatty acid derivatives is provided. The liquid composition is useful in every ink tank formed of resin or synthetic rubber containing fatty acid or the derivatives. The ink tank is also useful in despite of sodium ion concentration of ink. Formation of insoluble substances produced to react with sodium ion and fatty acid or the derivatives deteriorates the ink flow to clog the filter in the pass. The low sodium ion concentration of ink, or the low fatty acid or the derivatives concentrations of tank material prevents from forming the insoluble substances.

REFERENCES:
patent: 4284774 (1981-08-01), Buell
patent: 4290812 (1981-09-01), Loock
patent: 4373954 (1983-02-01), Eida
patent: 4668789 (1987-05-01), Bermes
patent: 4683002 (1987-07-01), Mirua
patent: 4689640 (1987-08-01), Shimomura

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