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Ink set, and image forming process, image forming apparatus, catridge and record using the same

An imaging method, ink group technology, applied in the direction of ink, copying/marking method, application, etc., can solve the problem of insufficient activity, etc.

Inactive Publication Date: 2008-05-28
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technique disclosed in JP-A No. 2002-225414 still shows insufficient activity, thereby producing images of good quality in non-absorbent recording media

Method used

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  • Ink set, and image forming process, image forming apparatus, catridge and record using the same
  • Ink set, and image forming process, image forming apparatus, catridge and record using the same
  • Ink set, and image forming process, image forming apparatus, catridge and record using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0288] A treatment liquid composition and a recording liquid composition for constituting the ink set of the present invention and those of Comparative Examples each having the following formulations were prepared. Unless otherwise indicated, all parts in the formulations are by weight and the total amount of each composition is 100 parts by weight.

[0289]

[0290] Cationic colloidal silica (SNOW TEX AK; Nissan Chemical Industries,

Ltd.)

15 copies

2-pyrrolidone

12.5 servings

Diethylene glycol

12.5 servings

Octanediol

1.0 copies

Cationic surfactant (Cation G50; Sanyo Chemical Industries, Ltd.)

2.0 copies

Benzotriazole

1.0 copies

Antimicrobial-anti-mold agent (PROXEL LV(s); Avecia Ltd.)

0.2 parts

water

balance

[0291] The above composition was adjusted to pH 4.3 with acetic acid before use.

[0292]

[0293] Titanium dioxide (Titania IT-S; Idemitsu Kosan Co., ...

preparation example

[0326] (1) Preparation of polymer solution

[0327] The internal atmosphere of a 1-liter flask equipped with a mechanical stirrer, a thermometer, a nitrogen feed tube, a condenser and a dropping funnel was completely replaced with nitrogen, and 11.2 g of styrene, 2.8 g of acrylic acid, and 12.0 g of methacrylic acid were put into it Lauryl ester, 4.0g polyethylene glycol methacrylate, 4.0g styrene macromonomer AS-6 (trade name, purchased from Toagosei Co., Ltd.) and 0.4g mercaptoethanol, the mixture temperature was raised to 65°C.

[0328] Then, 100.8g styrene, 25.2g acrylic acid, 108.0g lauryl methacrylate, 36.0g polyethylene glycol methacrylate, 60.0g hydroxyethyl methacrylate, 36.0g styrene macromonomer AS -6 (trade name, available from Toagosei Co., Ltd.), a mixture of 3.6 g of mercaptoethanol, 2.4 g of azobisdimethylvaleronitrile and 18 g of methyl ethyl ketone was added dropwise to the above mixture in the flask over 2.5 hours.

[0329] After the addition was completed...

Embodiment A-1

[0377] The processing liquid composition 1, yellow recording liquid composition 1, and black recording liquid composition 1 prepared above were put into ink cartridges for the processing liquid composition, yellow recording liquid composition, and black recording liquid composition, respectively. Use these ink cartridges with Figure 7 An image forming apparatus (inkjet recording apparatus) of the configuration shown in was connected, and a printing test was performed. The main components in the treatment liquid composition and the recording liquid composition in Example A-1 are given in Table 1. The ink cartridges have the same configuration and dimensions.

[0378] The recording medium used for the printing test was plain paper My Paper (trade name, available from NBS RICOH Co., Ltd.), except that oil-based paint canvas (fine, available from Sekaido Co., Ltd.). Images were printed by an inkjet printing system in which the treatment liquid composition was first applied to ...

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Abstract

A treating liquid composition containing fine particles being so configured that their dispersion is kept or broken by an external factor such as contact between substance or ultraviolet irradiation, and a recording liquid composition containing a colorant being so configured that its dispersion or dissolution is kept or broken by the external factor are ejected separately onto a recording medium by ink-jet system. Droplets of the treating liquid composition and of the recording liquid composition are brought into contact with each other to cause a condition change such as a pH change or solubility change. The fine particles and the colorant aggregate separately without being substantially mixed with each other. This ink set produces a deep, colorful, sharp and glossy print in exact accordance with an original while effectively preventing feathering and color bleed on whichever of absorbable recording media and nonabsorbable recording media.

Description

technical field [0001] The present invention relates to inkjet image recording systems. More particularly, the present invention relates to a two-component ink set for absorbable or nonabsorbable recording media, which ink set avoids fuzzing and color bleeding and produces high-gloss images with high density and color saturation, and to the use of such inks Imaging methods, imaging devices, ink cartridges and records of the group. Background technique [0002] An inkjet recording system for recording an image with colorant-containing ink droplets is advantageous because of its simple and noiseless printing mechanism. However, image recording according to this inkjet recording system produces fuzzing and color bleeding when combined with an absorbable recording medium that absorbs a recording liquid such as a fiber recording medium. More specifically, the colorant in the recording liquid irregularly infiltrates between the fibers of the recording medium, thus distorting the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M5/00B41J2/01C09D11/00C09D11/54
Inventor 安达浩古川寿一
Owner RICOH KK