Ink composition for thermal ink jet printer or thermal ink permeation printer
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsYukio Kubota, Minoru Suzuki, Kazuyuki Shimbo
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Abstract
An ink composition includes an oil-based ink and a heat decomposition gas-developing agent that generates gas by a relatively small amount of heat. A thermal printer using the ink composition is not clogged with the composition even after a long-term storage, and provides a printed matter having excellent water resistance. Thus, the ink composition is remarkably useful for a thermal ink jet printer and a thermal ink permeation printer.
Claims7
An oil-based ink composition for a thermal ink jet printer or a thermal ink permeation printer comprising:
- an organic solvent;
- an oil-soluble dye and/or pigment dissolved or dispersed in the organic solvent;
- and
- a heat decomposition gas-developing agent that can be decomposed by heating to a decomposition temperature thereof to generate a gas and thereby eject or permeate the ink composition to a recording medium.
An oil-based ink composition for a thermal ink jet printer or a thermal ink permeation printer comprising:
- an organic solvent;
- an oil-soluble dye and/or pigment dissolved or dispersed in the organic solvent;
- a heat decomposition gas-developing agent that can be decomposed by heating to a decomposition temperature thereof to generate a gas and thereby eject or permeate the ink composition to a recording medium;
- wherein the thermal ink jet printer or a thermal ink permeation printer comprises a thermal head comprising a heating element, a film having a pore facing the heating element, an ink fountain disposed between the thermal head and the film, a roller platen of conveying a recording paper, and an ink amount-controlling unit placed nearby the heating element.
Dependencies are inferred from the claim text.