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Ink and ink set for inkjet recording

A technology of inkjet recording and ink set, which is applied in the field of ink compositions for inkjet recording, can solve the problems of deteriorating ink ejection stability and difficulty in obtaining black images with high reflection density, and achieve good ink ejection stability, good ejection The effect of stability, good storage stability

Inactive Publication Date: 2006-11-29
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a group of dyes having the same structure are mixed, then it causes a problem that it is difficult to obtain a black image with high reflection density
[0011] On the other hand, water-soluble black inks must satisfy absorption characteristics covering a wide wavelength range, and therefore, are problematic that their solid concentration tends to increase, and they may deteriorate ink ejection stability

Method used

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  • Ink and ink set for inkjet recording
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  • Ink and ink set for inkjet recording

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example

[0220] The heterocyclic oxy group refers to a substituted heterocyclic oxy group and an unsubstituted heterocyclic oxy group. The heterocyclic oxy group is preferably a heterocyclic oxy group having 2 to 20 carbon atoms. Examples of substituents of substituent groups are alkyl groups, alkoxy groups and ionic hydrophilic groups. Examples of the heterocyclic oxy group are 3-pyridyloxy and 3-thienyloxy.

[0221] The siloxy group is preferably a siloxy group substituted by an aliphatic and / or aromatic group having 1 to 20 carbon atoms. Examples of siloxy are trimethylsiloxy and diphenylmethylsiloxy.

[0222] Acyloxy is meant to include substituted acyloxy and unsubstituted acyloxy. The acyloxy group is preferably an acyloxy group having 1 to 20 carbon atoms. An example of a substituent for a substituted acyloxy group is an ionic hydrophilic group. Examples of acyloxy groups include acetoxy and benzoyloxy.

[0223] The carbamoyloxy group refers to a substituted carbamoyloxy g...

Embodiment 1

[0657] Ultrapure water (resistance, at least 18 MΩ) was added to the components described below to make 1 liter, followed by stirring under heating at 30 to 40° C. for 1 hour. Next, the resulting mixture was filtered under reduced pressure through a microfilter having an average pore size of 0.25 μm to prepare yellow ink Y-101.

[0658] (recipe for yellow ink, Y-101)

[0659] (solid component)

[0660] Yellow dye (DYE-83) 50g / liter

[0661] Proxel 5g / L

[0662] Urea 25g / L

[0663] (liquid component)

[0664] Triethylene glycol monobutyl ether (TGB) 100g / liter

[0665] Glycerin (GR) 115g / L

[0666] Triethylene glycol (TEG) 100g / liter

[0667] 2-Pyrrolidone 35g / L

[0668] Triethanolamine (TEA) 8g / L

[0669] Surfynol STG (SW) 10g / L

[0670] The yellow dye (DYE-83) used here has an oxidation potential of 1.23 V (relative to SCE) measured by cyclic voltammetry (CV) and rotating ring disk electrode method in the analysis of the dye in aqueous solution (1 mmol / L). .

[06...

Embodiment 2

[0698] Ultrapure water (resistance, at least 18 MΩ) was added to the components shown below to make 1 liter, followed by stirring under heating at 30 to 40° C. for 1 hour. Next, the resulting mixture was filtered under reduced pressure through a microfilter having an average pore size of 0.25 μm to prepare yellow ink Y-201.

[0699] (recipe for yellow ink, Y-201)

[0700] (solid component)

[0701] Yellow dye (DYE-83) of the present invention 30g / liter

[0702] Proxel 5g / liter

[0703] Urea 20g / liter

[0704] (liquid component)

[0705] Triethylene glycol monobutyl ether (TGB) 60g / liter

[0706] Glycerin (GR) 100g / L

[0707] Triethylene glycol (TEG) 40g / liter

[0708] Isopropanol 40g / liter

[0709] 1,5-pentanediol 40g / liter

[0710] Triethanolamine (TEA) 8g / L

[0711] Surfynol STG (SW) 10g / L

[0712] The other yellow inks described in the table below were prepared in the same manner as yellow ink Y-201 was prepared, however, the dyes shown below were used instead of...

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Abstract

To provide inks and ink sets for inkjet recording, which have good fastness and good jet-out stability and which give good images with no bleeding trouble, yellow ink, black ink and magenta ink for inkjet printing contain at least two dyes each having an oxidation potential over 1.0 V (vs SCE).

Description

technical field [0001] The present invention relates to an ink composition for inkjet recording which provides images with good storage stability and which has good ejection stability even after long-term storage. Background technique [0002] In recent years, with the popularization of computers, inkjet printers are widely used for printing on paper, film, fabric, and others not only in offices but also in homes. [0003] Inkjet recording methods include systems in which ink droplets are ejected by applying pressure to ink droplets using a piezoelectric device, systems in which ink droplets are ejected by heating ink to bubbles, systems using ultrasonic waves, and ink suction and ejection by using electrostatic force. drop system. As the ink composition for inkjet recording, usable are water-based ink, oil-based ink and solid (hot-melt) ink. Among these inks, water-based inks are most preferably used because of their manufacturability, workability, odorlessness, and safet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/00B41J2/01B41M5/00C09D11/328C09D11/40
Inventor 田中敏树小泽孝小川学和地直孝
Owner FUJIFILM CORP
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