Pretreatment solution for inkjet ink, ink set, image recording method, method for manufacturing laminate, image recording material, and laminate

JP7885259B2Active Publication Date: 2026-07-06FUJIFILM CORP

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
FUJIFILM CORP
Filing Date
2023-01-26
Publication Date
2026-07-06

AI Technical Summary

Benefits of technology

【0007】 本開示の一実施形態によれば、非浸透性基材上にインクジェットインク用前処理液及びインクジェットインクをこの順に付与して画像を記録して画像記録物を得、得られた画像記録物における画像上に、ラミネート用基材をラミネートしてラミネート体を製造する場合のラミネート体のボイル耐性を向上させることができ、かつ、保存安定性に優れるインクジェットインク用前処理液が提供される。 本開示の別の実施形態によれば、上記インクジェットインク用前処理液を含むインクセット、並びに、上記インクジェットインク用前処理液を用いた、インクセット、画像記録方法、ラミネート体の製造方法、画像記録物、及びラミネート体が提供される。

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Abstract

The present invention relates to a pretreatment liquid for inkjet ink and an application thereof, said liquid containing: at least one flocculant selected from the group consisting of organic acids, polyvalent metal compounds, and metal complexes; water; and a urethane resin, the urethane resin including a polyol unit, a polyisocyanate unit, and a polyalkylene glycol monoalkyl ether unit.
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Claims

1. It contains a flocculant, which is at least one selected from the group consisting of organic acids, polyvalent metal compounds, and metal complexes, water, and a urethane resin. The urethane resin comprises polyol units, polyisocyanate units, and polyalkylene glycol monoalkyl ether units. When the number-average molecular weight of the polyalkylene glycol monoalkyl ether used to form the polyalkylene glycol monoalkyl ether units is a, and the number-average molecular weight of the urethane resin is b, then (a / b) × 100 is between 2.5 and 20.

0. Pre-treatment solution for inkjet inks.

2. The content of the polyalkylene glycol monoalkyl ether units relative to the total amount of the urethane resin is 5% by mass to 20% by mass. The pretreatment solution for inkjet ink according to claim 1.

3. The polyol unit includes a polycarbonate diol unit. The pretreatment solution for inkjet ink according to claim 1.

4. The flocculant comprises at least one selected from the group consisting of the organic acid and the polyvalent metal salt of the organic acid as the polyvalent metal compound. The pretreatment solution for inkjet ink according to claim 1.

5. The flocculant contains the organic acid, The pretreatment solution for inkjet ink according to claim 1.

6. A pretreatment solution for inkjet ink according to any one of claims 1 to 5, A first ink is an inkjet ink containing water and urethane resin, An ink set including this.

7. The ink set according to claim 6, wherein the first ink further contains a white pigment.

8. The ink set according to claim 7, further comprising a second ink which is an inkjet ink containing water, a coloring pigment, and a urethane resin.

9. The ink set described in claim 6 is used, A step of applying the inkjet ink pretreatment solution onto a non-permeable substrate, A step of applying the first ink to the non-permeable substrate to which the inkjet ink pretreatment liquid has been applied, using an inkjet recording method, An image recording method that includes [a specific feature / method].

10. The ink set described in claim 8 is used, A step of applying the inkjet ink pretreatment solution onto a non-permeable substrate, A step of applying the first ink and the second ink to a non-permeable substrate to which the inkjet ink pretreatment liquid has been applied, using an inkjet recording method. An image recording method that includes [a specific feature / method].

11. A step of obtaining an image recording object comprising the non-permeable substrate and an image disposed on the non-permeable substrate by the image recording method described in claim 9, A step of obtaining a laminated body by laminating a laminating substrate onto the side of the image recording material on which the image is arranged, A method for manufacturing a laminate containing [the specified substance].

12. A step of obtaining an image recording object comprising the non-permeable substrate and an image disposed on the non-permeable substrate by the image recording method described in Claim 10, A step of obtaining a laminated body by laminating a laminating substrate onto the side of the image recording material on which the image is arranged, A method for manufacturing a laminate containing [the specified substance].

13. The invention comprises a non-permeable substrate and an image placed on the non-permeable substrate, The aforementioned image is, A pretreatment layer is provided on the non-permeable substrate and contains a flocculant, which is at least one selected from the group consisting of organic acids, polyvalent metal compounds, and metal complexes, and a urethane resin. Displaced on the aforementioned pretreatment layer, an ink layer containing a pigment and a urethane resin, Includes, The urethane resin in the pretreatment layer comprises polyol units, polyisocyanate units, and polyalkylene glycol monoalkyl ether units. When the number-average molecular weight of the polyalkylene glycol monoalkyl ether used to form the polyalkylene glycol monoalkyl ether units is a, and the number-average molecular weight of the urethane resin is b, then (a / b) × 100 is between 2.5 and 20.

0. Image recordings.

14. The image recording material according to claim 13, A laminating substrate laminated onto the image of the image recording, A laminated body equipped with [a specific feature].