Ink-jet type ink group

An inkjet and ink technology, applied in the direction of ink, duplication/marking method, printing, etc., can solve the problem of high printing density and achieve the effect of high printing density

Inactive Publication Date: 2003-09-24
EASTMAN KODAK CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, ink compositions containing pyrrolidin-2-one or its usual derivatives such as 1-methyl-pyrrolidin-2-one or 1-(2-hydroxyethyl)-pyrrolidin-2-one etc. The print density obtained is not as high as desired

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0044] ink preparation

[0045] Base inks without pyrrolidin-2-one derivatives were prepared by simple mixing of the components. After thorough mixing, each base ink was filtered through a 0.2 micron filter paper. See Table 2 for details. The balance of the ink composition is water.

[0046] Base

ink

color

dye

weight%

dye

weight%

Glycerin

weight%

DEG

weight%

Triethanolamine

cyan

Direct Blue 307 a

3.6

12.5

12.5

0.9

Magenta

Direct Violet 107 b

3.0

12.5

12.5

0.9

yellow

Direct Yellow 132 c

4.0

12.5

12.5

0.9

black

Reactive Black 31 d

7.5

12.5

12.5

0.0

[0047] a - Pro-Jet(R) Fast Cyan 2, 6% by weight aqueous dye solution available from Avecia Inc.

[0048] b - Pro-Jet(R) Fast Magneta 2, 5% by weight aqueous dye solution available from Avecia Inc.

[0049] c - Pro-J...

Embodiment 1

[0052] 2.5 parts of the compound of the present invention were added to 97.5 parts of the cyan base ink described in Table 2 to produce the ink mixture described in Table 3. By adding pyrrolidin-2-one (C-1), 1-methyl-pyrrolidin-2-one (C-2) or 1-(2-hydroxyethyl)-pyrrolidin-2-one (C- 3) A comparative ink mixture was prepared. Pyrrolidin-2-one, 1-methyl-pyrrolidin-2-one and 1-(2-hydroxyethyl)-pyrrolidin-2-one are structurally similar to the compounds of the present invention, but do not contain an ester group .

[0053] To evaluate the mixture, each ink was placed in an ink cartridge of a Lexmark Z51 printer and printed using a Lexmark Z51 printer. Print patches with maximum dot coverage (D-max) were printed on the inkjet media types shown in Table 3. After the printed area had dried approximately one day after printing, the Status A red light absorption density of each piece was evaluated using a MacBeth-Gretag Spectrolino densitometer. The results are shown in Table 3.

[...

Embodiment 2

[0057] A magenta ink mixture was prepared and evaluated as described in Example 1, except that the magenta base ink of Table 2 was used instead of the cyan base ink and the Status A green light absorption density was determined. The results are shown in Table 4.

[0058] Status A green density at D-max

[0059] Mixtures prepared using example compounds of the invention provided higher print densities at maximum dot coverage than the comparative ink mixtures (C-4, C-5, and C-6) tested on all media types.

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PUM

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Abstract

An inkjet ink comprising a colorant, a water-soluble ester or amide of pyrrolidin-2-one carboxylic acid, and water. An inkjet printing method is also disclosed.

Description

technical field [0001] This invention relates to inks for ink jet printing which provide images with high print density and improved color gamut. Background technique [0002] Inkjet printing is a non-impact method of producing images by depositing droplets of ink on a pixel by pixel basis to an image recording element in response to a digital signal. The deposition of ink droplets on the image recording element to produce the desired image can be controlled in a number of ways. In a process known as continuous inkjet, a continuous stream of droplets is loaded and imagewise deflected onto the surface of the image recording element, while unimaged droplets are captured and returned to the ink well. In another method known as drop-on-demand ink jetting, single drops of ink are jetted onto an imaged recording element as needed to form the desired image. Common methods of controlling drop ejection during drop-on-order printing include piezoelectric sensors and thermal bubble f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41M5/00C09D11/00
CPCC09D11/38C09D11/40
Inventor J·W·布利斯S·埃文斯E·J·皮斯策克
Owner EASTMAN KODAK CO
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