Image forming method
AssigneeRicoh Company, Ltd.
InventorsHiroshi Gotou, Hidetoshi Fujii
Life of this patent
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Abstract
An image forming method including adhering a pretreatment liquid to a surface of a recording medium bearing a coat layer thereon; adhering an ink including a colorant, an organic solvent, a surfactant and water to the surface of the recording medium to form an image of the ink; and adhering an aftertreatment liquid to the image-bearing surface of the recording medium to form a protective layer on at least the image on the recording medium. The organic solvent of the ink includes a polyalcohol having an equilibrium moisture content of not less than 30% by weight at 23° C. and 80% RH; a β-alkoxy-N,N-dimethylpropionamide compound, and at least one compound selected from 1,3-dioxane-4-methanol compounds, oxetane compounds, and sebacic acid dialkylester compounds.
Claims7
An image forming method comprising:
- adhering a pretreatment liquid to a surface of a recording medium bearing a coat layer thereon, wherein the recording medium includes a support, and the coat layer is located on at least one surface of the support;
- adhering an inkjet ink including a colorant, an organic solvent, a surfactant and water to the surface of the recording medium, to which the pretreatment liquid has been adhered, to form an image of the ink;
- and
- adhering an aftertreatment liquid to the surface of the recording medium, on which the image has been formed, to form a protective layer at least on the ink image on the recording medium,
- wherein the organic solvent of the ink includes:
- a polyalcohol having an equilibrium moisture content of not less than 30% by weight at 23° C. and 80% RH;
- an amide compound having the below-mentioned formula (I):
- wherein R represents an alkyl group having 4 to 6 carbon atoms;
- and
- a compound having a formula selected from the group consisting of the below-mentioned formulae (II) to (IV):
- wherein R1 represents a hydrogen atom, or an alkyl group having 1 or 2 carbon atoms, and R2 represents an alkyl group having 1 to 4 carbon atoms;
- wherein R′ represents an alkyl group having 1 or 2 carbon atoms, and R3 represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cyclic alkyl group, or an aromatic group;
- and
- wherein each of R4 and R5 independently represents an alkyl group having 1 to 8 carbon atoms.
Dependencies are inferred from the claim text.