Ink for oil-based ball pen
AssigneeMitsubishi Pencil Company, Limited
InventorsMasaaki Morita, Susumu Suzuki, Toshiaki Takayanagi, Kyoko Kobayashi
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Abstract
Provided is an oil based ink for a ball-point pen comprising at least an alcohol-soluble dye, carbon black, a resin and an organic solvent, wherein the carbon black described above has a DBP oil absorption of 80 cc/100 g or less. The carbon black has preferably a particle diameter of 30 mμ or less and a content of 1 to 15 mass % based on the total amount of the ink.
Claims4
An oil based ink for a ball-point pen comprising at least an alcohol-soluble dye, carbon black, a resin and an organic solvent, wherein the carbon black described above has a DBP oil absorption of 80 cc/100 g or less.
Dependencies are inferred from the claim text.