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Ink jet recording sheet

An inkjet recording and paper-using technology, applied in copying/marking methods, printing, etc., can solve problems such as poor preservation of printed parts, large pigment particles, fading images, etc., and achieve excellent preservation and color rendering excellent effect

Inactive Publication Date: 2009-03-11
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the inkjet recording method is also used for large-scale posters displayed outdoors in recent years, the following disadvantages of this water-based ink are pointed out: If the dye ink is displayed for a long time, it will be oxidized by ultraviolet rays, ozone, etc., and the image will fade and the surface will be damaged. , the print part is not well preserved
[0004] On the other hand, although the pigment ink has excellent characteristics of light stability of the printed part, ozone resistance of the printed part, and water resistance of the printed part, there is a problem that due to the size of the pigment ink compared with the dye ink, the pigment ink The pigment particles are very large, so when printing with pigment ink on paper for inkjet recording that has traditionally been used with dye inks, a clear printed image cannot be obtained

Method used

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  • Ink jet recording sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] [Paper Base A]

[0137] Add 20 parts of light calcium carbonate to 100 parts of hardwood bleached kraft pulp (water drainage is 400ml CSF), add 1 part of cationic starch, 0.2 part of anhydrous alkenyl succinic acid neutral filler, fully mix to Form the raw material for papermaking, dry to a moisture content of 10% using a fourdrinier multi-drum paper machine, and apply 4g / m on both sides with a press 2 7% oxidized starch solution, dried to a moisture content of 7%, prepared to obtain a paper weight of 200g / m 2 The paper substrate A.

[0138] [Undercoat coating solution A]

[0139] 100 parts of titanium dioxide (manufactured by Sakai Chemical Co., trade name: R-21, secondary particle size. -376, emulsion type binder) and 5 parts of oxidized starch (manufactured by Oji Consta-chi Co., Ltd., trade name: エ-スA, water-soluble binder) are dispersed in water as a binder to obtain a base Coating solution A.

[0140] [Ink Receiving Layer Coating Solution A]

[0141] 100 pa...

Embodiment 2

[0145] [Paper base B]

[0146] Add 20 parts of light calcium carbonate to 70 parts of hardwood bleached kraft pulp (400ml CSF) and 30 parts of deinked newspaper old paper pulp (250ml CSF), add 1 part of cationic Starch, 0.2 parts of anhydrous alkenyl succinic acid neutral filler, fully mixed to form papermaking raw materials, dried to 10% moisture using a fourdrinier multi-drum paper machine, and coated with 4g / m on both sides by a press 2 7% oxidized starch solution, dried to a moisture content of 7%, prepared to obtain a paper weight of 200g / m 2 The paper substrate B.

[0147] [Manufacture of inkjet recording paper]

[0148] Inkjet recording paper was produced in the same manner as in Example 1, except that the paper base A in Example 1 was changed to the paper base B. In addition, the white paper portion on the surface of the ink-receiving layer of the obtained inkjet recording paper had a 60-degree specular gloss of 3% according to JIS-Z8741.

Embodiment 3

[0150] [Paper Base C]

[0151] 20 parts of light calcium carbonate are added to 70 parts of hardwood bleached kraft pulp (400ml CSF drainage) and 30 parts of deinked restained old paper (restained old paper: also used in color printed wood-free paper) Add 1 part of cationic starch and 0.2 part of anhydrous alkenyl succinic acid neutral filler to the mixed slurry of pulp (water drainage: 250ml CSF) containing fine art paper, and mix thoroughly to form papermaking raw materials, using Fourdrinier Dried to a moisture content of 10% in a multi-drum paper machine, and coated with 4g / m on both sides with a press machine 2 7% oxidized starch solution, dried to a moisture content of 7%, prepared to obtain a paper weight of 200g / m 2 The paper substrate C.

[0152] [Manufacture of inkjet recording paper]

[0153] Inkjet recording paper was produced in the same manner as in Example 1 except that the paper base A in Example 1 was changed to the paper base C. In addition, the white pa...

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Abstract

Ink jet recording sheet has excellent coloring properties for dye ink as well as pigment ink, a high degree of brightness, and excellent preservability for white paper portions. The ink jet recording sheet includes: a paper supporting medium made by machining pulp; an undercoating layer including at least a pigment and an adhesive; and an ink receiving layer including at least a pigment and an adhesive, the undercoating layer and the ink receiving layer being disposed on at least one surface of the paper supporting medium, and the ink receiving layer being located outermost thereof, wherein the undercoating layer includes titanium dioxide as the pigment and at least one emulsion type adhesive selected from acryl polymers, ethylene-vinyl acetate copolymers, or vinyl acetate polymers; and the ink receiving layer includes silica having an average secondary particle size of 3 to 11 m as the pigment, and a cationic ink fixing agent.

Description

technical field [0001] The present invention relates to inkjet recording paper and printed matter using the same. Specifically, the present invention relates to paper for inkjet recording that has excellent inkjet recording suitability (color rendering property) even when dye ink or pigment ink is used, excellent preservation of white paper parts, and high whiteness of the paper surface. Further, the present invention relates to paper for inkjet recording that does not impair the above-mentioned performance even if a base material mixed with recycled pulp of used paper is used. Background technique [0002] The inkjet recording method, which sprays water-based ink from fine nozzles to the surface of the recording body, and forms an image on the surface of the recording body, is easy to form a full-color image due to low noise during recording, and can record at high speed, and is compatible with other printing devices. Compared with the recording cost, it is widely used in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M5/00
Inventor 砂川宽一松浦谕手岛理惠户谷和夫金田秀将柴谷正也大西弘幸
Owner SEIKO EPSON CORP