Method for purifying ink

Details Method for purifying ink Method for purifying ink

1983-09-22

1986-01-21

Richman, Barry S.

Liquid purification or separation

Processes

Separating

210 90, 210178, 210179, 210181, 106 20, B01D 3518, C02B 102

Patent

active

045656380

ABSTRACT:
Excess or unused ink that is recovered from a printing process and which contains fibrous impurities is purified by mixing the recovered ink with virgin ink, heating the mixture to decrease the viscosity thereof, and then straining and filtering the heated mixture.

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patent: 2590538 (1952-03-01), Huck
patent: 3123579 (1964-03-01), LeFevre
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patent: 4007684 (1977-02-01), Takano et al.
patent: 4179019 (1979-12-01), Danziger
patent: 4219577 (1980-08-01), Pedersen et al.
patent: 4276327 (1981-06-01), Hue et al.
patent: 4391638 (1983-07-01), Fusco et al.
patent: 4432894 (1984-02-01), Kamiya et al.

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