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Inkjet ink composition and printed matters created using inkjet ink composition

A technology of inkjet ink and composition, which is applied in printing, ink, application, etc., and can solve the problems of reduced printing reproducibility, printing errors, and missing ink delivery lines.

Inactive Publication Date: 2006-02-01
TOSHIBA TEC KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Once the viscosity, surface tension, elasticity, etc. of the ink fluctuate due to the deterioration of the above-mentioned pigment dispersibility, it will lead to disorder in the configuration of the ink trajectory, printing errors, loss of line pattern of ink delivery, reduction of printing reproducibility, or at worst In some cases, it will lead to serious conditions such as ink delivery failure and ink clogging
Therefore, the problem is very serious

Method used

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  • Inkjet ink composition and printed matters created using inkjet ink composition
  • Inkjet ink composition and printed matters created using inkjet ink composition
  • Inkjet ink composition and printed matters created using inkjet ink composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0183] First, various pigment dispersions were prepared according to the formulations shown in Table 1 below by using compounds represented by the following chemical formulas (C1), (C2), (C3) and (C4) as acid-polymerizable compounds (solvents) combination.

[0184]

[0185]

[0186]

[0187]

[0188] Dispersions

solvent

paint

Synergist (wt%)

Dispersant (wt%)

C1(Bk)

C1

PB7

A(0.22)

3.42

C1(Y)

PY180

B(0.31)

3.42

C1(C)

PB15:3

A(0.31)

3.43

C1(M)

PV19

5

C2(Y)

C2

PY180

B(0.31)

3.42

C2(C)

PB15:3

A(0.31)

3.43

C2(M)

PV19

5

C3(Y)

C3

PY180

B(0.31)

3.42

C3(C)

PB15:3

A(0.31)

3.43

C3(M)

PV19

5

C4(Y)

C4

PY180

B(0.31)

3.42

C4(C)

PB15:3

A(0.31)

3.43

...

Embodiment II

[0208] In 25% by weight of the dispersion composition prepared in Example 1, the recipe shown in Table 5 below mixed together predetermined components including various acid-polymerizable compounds and photo-acid generators to prepare each Inkjet inks. As for the photo-acid generator, compounds respectively represented by the following structural formulas (PAG3), (PAG4), (PAG5) and (PAG6) were dissolved in propylene carbonate, thereby forming a 50% by weight solution thereof. Therefore, the mixing ratio of the photo-acid generator in Table 5 represents the net weight percentage, so the same amount of propylene carbonate is contained in the ink. Meanwhile, PAG3, PAG4, PAG5, and PAG6 are all compounds each containing one substituent.

[0209] In addition, PI1 (dibutoxyanthracene) can also be added as a sensitizer in all inkjet inks at a ratio of 20 wt% of the amount of photo-acid generator.

[0210]

[0211] where R 2 is an alkyl group (mixture) containing 8 to 14 carbon a...

Embodiment III

[0229] First, a dispersion composition C5 (M) was prepared according to the same formulation as C1 (M) of Example 1, except that a polyester resin with a cyclohexylamine skeleton as a terminal group was used as a dispersant. The cyclohexylamine has pKb=3.34 and is very basic.

[0230] Ink No. 40 was obtained according to the same formulation as Ink No. 4, except that the aforementioned dispersion composition C5(M) was used, and its performance was evaluated in the same manner as described above. Inks made with dispersants with strongly basic end groups proved to have excellent performance, i.e. the increase in pigment particle size was reduced by half, ie about +12 nm, and the printing error frequency was also reduced to about 0.6 / hour.

[0231] As described above, according to an aspect of the present invention, it is possible to provide an inkjet ink composition free from the problems of ink output failure and ink clogging, thereby making the ink composition suitable as a UV...

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Abstract

There is proposed an inkjet ink composition comprising a pigment component to which a resin having a basic terminal is adsorbed, a photo-acid generating agent containing an onium salt, and at least one kind of solvent which can be polymerized under the presence of an acid. The content of multivalent salt included in the onium salt is not more than 20% by weight based on a total weight of onium salt, and the content of the pigment component is confined within the range of 3 to 41% by weight based on the ink composition.

Description

technical field [0001] The present invention relates to an inkjet ink composition and printed matter made using the inkjet ink composition. Background technique [0002] In recent years, on-demand printers (on-demand printers) capable of quickly responding to diverse needs and capable of minimizing material loss (stocks) have been increasingly adopted. As such on-demand printing machines, electrophotographic printing machines using toner or liquid toner and inkjet printing machines capable of high-speed high-quality printing are considered available. In the case of inkjet printers, solvent-based inks can be processed in a closed system until the ink is sprayed onto the surface of the print. In addition, since the ink can be effectively used without substantially generating excess ink, the problem of environmental pollution can be alleviated. [0003] In addition, a photosensitive inkjet ink and an inkjet printer system using the photosensitive inkjet ink are attracting att...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/02B41J2/01B41M5/00C09D11/00C09D11/322C09D11/38
CPCC09D11/101
Inventor 后河内透大津和彦石桥充秋山良造广木正士
Owner TOSHIBA TEC KK
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