Ink-jet ink, ink cartridge and recording unit, and ink-jet recording process and ink-jet recording apparatus using the same
AssigneeCanon Kabushiki Kaisha
InventorsMariko Suzuki, Shoji Koike
Life of this patent
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Abstract
The invention provides an ink-jet ink comprising (A) diethylene glycol, (B) at least one of trimethylolpropane and ethyleneurea, (C) a glycol having a vapor pressure lower than that of diethylene glycol at 20° C., (D) a coloring material, and (E) water, wherein the total amount of the components (A), (B) and (C) is 10 to 40% by weight based on the total weight of the ink. The ink is hard to undergo a change in ink composition even when the ink is used in ejection with no recording or ejection-recovery operation, and also hard to undergo a change in ink properties even when the ink composition is changed.
Claims23
An ink-jet ink comprising (A) diethylene glycol, (B) at least one of trimethylolpropane and ethyleneurea, (C) a glycol having a vapor pressure lower than that of diethylene glycol at 20° C., (D) a coloring material, and (E) water, wherein the total amount of the components (A), (B) and (C) is 10 to 40% by weight based on the total weight of the ink.
An ink-jet recording process, comprising the step of ejecting an ink from an orifice toward a recording surface with an On-Demand system by applying energy to the ink, wherein the ink comprises (A) diethylene glycol, (B) at least one of trimethylolpropane and ethyleneurea, (C) a glycol having a vapor pressure lower than that of diethylene glycol at 20° C., (D) a coloring material, and (B) water, and wherein the total amount of the components (A), (B) and (C) is 10 to 40% by weight based on the total weight of the ink.
A method of stabilizing ink ejection properties in an ink-jet recording process comprising the step of ejecting an ink containing an ink-jet ink previously ejected at least once from a recording head, wherein the ink-jet ink comprises (A) diethylene glycol, (B) at least one of trimethylolpropane and ethyleneurea, (C) a glycol having a vapor pressure lower than that of diethylene glycol at 20° C., (D) a coloring material, and (B) water, wherein the total amount of the components (A), (B) and (C) is 10 to 40% by weight based on the total weight of the ink.
Dependencies are inferred from the claim text.