Emulsion ink for stencil printing and its use
AssigneeRiso Kagaku Corporation
InventorsHiroyuki Ogawa, Hideaki Takayama
Life of this patent
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Abstract
An emulsion ink for stencil printing comprises 20 to 50 wt. % of an oil phase and 50 to 80 wt. % of a water phase, and contains at least one kind of a vegetable oil with an iodine number ranging from 110 to 150 in the oil phase at least in an amount indicated by the following formula in wt. %, and an antioxidant in an amount ranging from 1 to 10 wt. % based on the content of the vegetable oil: Minimum amount of vegetable oil in wt. %=amount of water in ink in wt. %×(100/iodine number)×0.09. The ink causes no clogging or offset when a printer is not in operation and the ink is left in a printing drum of the printer for a long period of time. Disclosed is also a printed matter printed by the emulsion ink of the present invention.
Claims14
An emulsion ink for stencil printing comprising 20 to 50 wt. % of an oil phase and 50 to 80 wt. % of a water phase, wherein the emulsion ink contains in the oil phase at least one kind of a vegetable oil with an iodine number ranging from 110 to 150 at least in an amount indicated by the following formula in wt. %, and an antioxidant in an amount ranging from 1 to 10 wt. % based on the content of the vegetable oil:
- Minimum amount of vegetable oil in wt. %=amount of water in ink in wt. %×(100/iodine number)×0.09.
Dependencies are inferred from the claim text.