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Ink-jet ink and recording material

An inkjet recording material, inkjet ink technology, applied in the direction of ink, copying/marking method, application, etc., capable of solving problems such as poor light fastness, fading or discoloration

Inactive Publication Date: 2006-01-25
CIBA SPECIALTY CHEM HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, inkjet dyes generally have poorer light fastness, e.g. compared to conventional dyed pigments in conventional printing inks
As a result, images formed by inkjet printing typically have a limited lifespan under light conditions, and thus rapidly begin to fade or discolour

Method used

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  • Ink-jet ink and recording material
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  • Ink-jet ink and recording material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0233] Inkjet inks were prepared by dissolving 2 g of dye in 20 g of diethylene glycol and 78 g of deionized water. The dye used was Acid Red 52. 0.15g of stabilizer was weighed into a test tube and dissolved in 2.85g of ink. Ink was filtered and transferred into empty and carefully cleaned Deskjet 510 printer (Hewlett-Packard) cartridges. Then, the stair-shaped image was printed on plain paper (sihl+eika). The resulting prints were dried under vacuum at 50 °C for 2 h and subsequently irradiated behind a 5 mm thick window glass in an Atlas Ci-35 photofading unit equipped with a xenon lamp. Operate the Atlas device at 43°C, 50% RH, no dark cycle, the light intensity is 461W / m 2 (300-800nm). The color density of each step was measured with a MacBethTR 924 densitometer before and after exposure.

[0234] The results are given below with an initial density of 1. Lower loss of density values ​​indicates higher light fastness.

[0235] Stabilizer Low density loss (%)

[0236...

Embodiment 2

[0246] Magenta and yellow inks were drawn from a Hewlett-Packard tri-color cartridge (HP C1823D). Weigh 0.15g stabilizer into a test tube and dissolve it in 2.85g magenta or yellow ink. The resulting ink was filtered and transferred to an empty and carefully cleaned Deskjet 510 printer (Hewlett-Packard) cartridge. Then, print the ladder image on plain paper (sihl+eika) or on Hewlett-Packard Premium Photo Paper (item code C6040A). The resulting prints were dried under vacuum at 50 °C for 2 h and subsequently irradiated behind a 5 mm thick window glass in an Atlas Ci-35 photofading unit equipped with a xenon lamp. Operate the Atlas device at 43°C, 50% RH, no dark cycle, the light intensity is 461W / m 2 (300-800nm). The color density of each step was measured with a MacBeth TR 924 densitometer before and after exposure.

[0247] stabilizer

30kJ.cm -2 Density loss (%)

magenta print

on plain paper

On HP Premium paper

yellow print

on ...

Embodiment 3

[0252] Canon PR-101 sheet (Canon Japan) was post-treated with cast stabilizer in water or methanol solution using a 75 micron wire wound coating rod. After drying at room temperature, the sheet thus modified was subjected to printing of a cyan (cyan) ladder image with a Canon BJC 8200 printer. The cyan dye used was C.I. Direct Blue 199. The prints thus obtained were dried in vacuum at 50 °C for 2 h, followed by forced air flow for 4 weeks. Color density was measured with a MacBeth TR 924 densitometer before and after exposure.

[0253] Stabilizer Density loss % after 28 days

[0254] no 20

[0255] Compound A (0.5g / m 2 ) 14

[0256] Compound A (1.0g / m 2 ) 14

[0257] Compound C (0.5g / m 2 ) 14

[0258] Compound C (1.0g / m 2 ) 12

[0259] Compound D (0.5g / m 2 ) 9

[0260] Compound D (1.0g / m 2 ) 4

[0261] Compound A is 1-oxy-2,2,6,6-tetramethyl-4-hydroxypiperidine.

[0262] Compound C is 1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium citrate.

[0263] Comp...

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PUM

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Abstract

The invention relates to an ink jet ink or ink jet recording material comprising at least one sterically hindered N-hydroxylamine strong acid salt of the formula (I) wherein G1 and G2 are e.g. C1-C4alkyl, Z1 and Z2 are each methyl, or Z1 and Z2 together form a linking moiety such as, for example, 1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium chloride or bis(1-hydroxy-2,2,6,6-tetramethylpiperidin-4-yl) sebacate dihydrochloride; X is an anion of a strong acid, or comprising at least one dialkyl N-hydroxylamine salt of the formula (R51,R52N-OH) . (HY), for example, chloride, bisulfate, sulfate, phosphate, nitrate, ascorbate, formate, acetate, benzoate, oxalate, citrate, a carboxylate of thylenediaminetetraacetic acid or of diethylene-triaminepentaacetic acid or polyacrylate salts of N,N-diethylhydroxylamine, N,N-bis(2-hydroxypropyl)hydroxylamine, N,N-bis(3-hydroxypropyl)hydroxylamine, N,N-dibenzyl-hydroxylamine or the N,N-di(alkyl)hydroxylamine produced by the direct oxidation of N,N-di(hydrogenated tallow)amine.

Description

technical field [0001] The present invention relates to an ink jet ink, an ink jet recording material or an ink jet system with improved properties. Background technique [0002] In the inkjet process, an image is formed by ejecting ink droplets onto a recording material through nozzles. The ink described is in most cases an aqueous dye solution. The recording material should quickly and permanently fix the dye. Specially prepared paper or plastic films having a dye-bonded layer are mainly used for this purpose. Due to the very fine nozzles, dyes that are completely soluble in the ink medium are preferred over pigments. In addition, dyes can provide higher chroma and better color gamut than pigments. However, inkjet dyes generally have poorer lightfastness, eg compared to conventional dyed pigments in conventional printing inks. As a result, images formed by inkjet printing generally have a limited lifetime under light conditions, and thus rapidly begin to fade or chang...

Claims

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Application Information

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IPC IPC(8): C09D11/00B41M5/00B41M5/52
CPCB41M5/5236B41M5/52C09D11/38B41M5/5227B41M5/5245C09D11/30B41M5/00B41M5/50C09K15/30
Inventor M·G·伍德J·苏哈多尔尼克P·康德拉基
Owner CIBA SPECIALTY CHEM HLDG INC
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