Soy ink is a kind of ink made from soybeans. As opposed to traditional petroleum-based ink, soy-based ink is more environmental
inks contain a minimum of 20% vegetable or soybean oil in its composition and shall be free from harmful hazardous heavy metals and petroleum-based chemicals.
Item Properties Accepted Criteriaobserved in the ink ducts and ink rollers
of the press with fountain solution of pH
value 4.5-5.5 used
(ii) Ink Mist No ink mist shall be observed when the
press is printing at high speed of 10,000
impressions per hour with no additives
added to the inks