WO2011072571A1 - 彩色热升华墨水组 - Google Patents

彩色热升华墨水组 Download PDF

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WO2011072571A1
WO2011072571A1 PCT/CN2010/079220 CN2010079220W WO2011072571A1 WO 2011072571 A1 WO2011072571 A1 WO 2011072571A1 CN 2010079220 W CN2010079220 W CN 2010079220W WO 2011072571 A1 WO2011072571 A1 WO 2011072571A1
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ink
sublimation
deposition rate
color
dye
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PCT/CN2010/079220
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French (fr)
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田永中
杨秋艳
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珠海保税区天然宝杰数码科技材料有限公司
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00Inks
    • C09D11/30Inkjet printing inks
    • C09D11/40Ink-sets specially adapted for multi-colour inkjet printing
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00Inks
    • C09D11/30Inkjet printing inks
    • C09D11/32Inkjet printing inks characterised by colouring agents
    • C09D11/328Inkjet printing inks characterised by colouring agents characterised by dyes

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  • This invention relates to color sublimation dye inks for use in ink jet printers, and more particularly to color sublimation ink sets for use in ink jet printers.
  • the present invention is based on a Chinese invention patent application filed on Dec. 19, 2009, with the application number 200910214163.9, the content of which is incorporated herein by reference. Background technique
  • Color sublimation dye inks for ink jet printers are generally obtained by dispersing a sublimation dye in an aqueous solution containing water, a water-soluble organic solvent, a dispersant or the like. After printing various desired images using an ink jet printer on a specific transfer medium using the color sublimation dye ink, the medium is stacked on the transfer target, and dyeing is performed by heating sublimation transfer.
  • the sublimation dye is insoluble in water
  • the sublimation dye particles are dispersed in water or a water-soluble organic solvent by a dispersing agent or the like. Therefore, when the sublimation ink is stored for a long time or placed in the ink cartridge of the printer for a long time, the sublimation dye particles in the ink are deposited, which may result in a decrease in color density when printing an image, and storage for a long time.
  • the images printed before and after have a certain color difference.
  • the inventors found through research that when the deposition state of the sublimation dye particles in the sublimation dye particles of different colors in the same color sublimation ink set is severe or the difference is too large, the ink set is printed after long-term storage or long-term deactivation. There is a color imbalance in the image. Summary of the invention
  • the technical problem to be solved by the present invention is that the color sublimation ink set has a color imbalance problem when printing an image after long-term storage or long-term use.
  • the technical solution provided by the present invention is: a color sublimation ink set comprising at least one cyan ink, one magenta ink and one yellow ink, wherein each ink contains a sublimation dye, a dispersant, The organic solvent and water; wherein, the deposition rate P of the dye particles of any one of the color sublimation ink sets satisfies: 0 P 4.5%.
  • the color density and placement of the colors in the image are set. Or the color density of each color in the image printed before the deactivation is not significantly different, so various The initial balance is still maintained between the colors, and there is no obvious color imbalance.
  • the deposition rate of sublimation dye particles in cyan ink satisfies: 0 P e 1. 5%, the deposition rate of sublimation dye particles in yellow ink ⁇ ⁇ meets: 0 ⁇ ⁇ 3%, sublimation dye particle deposition in magenta ink Rate ⁇ ⁇ Meet: 0 ⁇ ⁇ 4%.
  • the deposition rate of the dye particles is not large because the deposition rate of the dye particles is different, so the deposition rate of the dye particles is close to each other.
  • the improvement effect on the print color mismatch imbalance is more obvious.
  • the deposition rate of the sublimation dye particles in the cyan ink, the deposition rate of the sublimation dye particles in the yellow ink, and the deposition rate of the sublimation dye particles in the magenta ink P M satisfy the following relationship: p c ⁇ p Y ⁇ p M .
  • the dye particle deposition rate of different color inks has different effects on the degree of color imbalance of the printed image.
  • the deposition rate of the dye particles in cyan ink, magenta ink, and yellow ink in a set of ink sets satisfies the condition of P e ⁇ P Y ⁇ P M
  • the sublimation ink set is stored or deactivated for a long time, and then The color imbalance of the image during printing is also very inconspicuous.
  • the scheme that does not affect the quality of the image is as follows: In the color sublimation ink set, the difference ⁇ of the deposition rate of the sublimation dye particles of any two inks satisfies: 0 ⁇ 5 ⁇ 2. 5%.
  • the difference between the deposition rates of the dye particles of any two inks is controlled within a certain value, so that the printing chromatic aberrations of the various color inks before and after long-term storage or deactivation are close to each other, thereby Ensure that the color of the color ink set printed before or after long-term storage or deactivation is not significantly different, effectively solving the color imbalance caused by the deposition of dye particles after long-term storage or deactivation of the sublimation ink.
  • the color sublimation ink set is composed of cyan ink, magenta ink, yellow ink, light cyan ink and light magenta ink, wherein the sublimation dye particle deposition rate P e of the cyan ink satisfies: O ⁇ Pc ⁇ l.
  • the deposition rate of sublimation dye particles of 5%, light cyan ink satisfies: 0 ⁇ P LC ⁇ 1.
  • the sublimation dye particle deposition rate of magenta ink P M satisfies: 0 P M 4%
  • sublimation dye of light magenta ink The particle deposition rate ⁇ ⁇ meets: 0 PLM 4%
  • the sublimation dye particle deposition rate P y of the yellow ink satisfies: 0 P Y 3%.
  • sublimation dye particle deposition rate P e in cyan ink sublimation dye particle deposition rate P Y in yellow ink
  • sublimation dye particle deposition rate in magenta ink ⁇ ⁇ sublimation dye particle in light cyan ink
  • sublimation dye particle deposition rate P E in cyan ink sublimation dye particle deposition rate ⁇ in yellow ink
  • sublimation dye particle deposition rate in magenta ink ⁇ sublimation dye particle deposition rate P E and light cyan ink
  • the deposition rate of sublimation dye particles in magenta ink ⁇ ⁇ meets the following relationship:
  • the color sublimation ink set of the present invention has no strict limitation on the number of color inks, and may be an ink set composed of a three-color ink set, a five-color ink set, a seven-color ink set, a nine-color ink set or more color inks.
  • the color sublimation ink set may be a three-color ink set consisting of cyan ink, magenta ink, and yellow ink.
  • the deposition rate of the sublimation dye particles in the cyan ink is not more than 1.5%
  • the sublimation dye particle deposition in the magenta ink The rate P M is not more than 4%
  • the deposition rate of the sublimation dye particles in the yellow ink is not more than 3%.
  • the cyan ink sublimation dye particles P E is less than the deposition rate of the sublimable dye of yellow ink particles deposition rate P "yellow ink and the sublimation dye particles smaller than the deposition rate ⁇ ⁇ magenta ink sublimation dye particles deposition rate ⁇ .
  • the 5% of the sublimation dye particles having a deposition rate P c is not more than 1.5%.
  • the deposition rate of sublimation dye particles of light cyan ink is 1. Not more than 1.5%
  • a yellow sublimable dye ink particles deposition rate is not greater than 3% ⁇ ⁇
  • magenta sublimable dye ink particles deposition rate [mu] [rho] is not greater than 4%
  • the rate of particle deposition sublimable dye ink is light magenta ⁇ ⁇ Not more than 4%.
  • the deposition rate of the sublimation dye particles in the cyan ink, the deposition rate of the sublimation dye particles in the yellow ink P Y , the deposition rate of the sublimation dye particles in the magenta ink, the deposition rate of the sublimation dye particles in the light cyan ink, and the light magenta ink The sublimation dye particle deposition rate PLM satisfies the following relationship: PLC ⁇ P E ⁇ P Y ⁇ PLM ⁇ P M .
  • the “dye particle deposition rate” mentioned above and below in the present invention refers to the ratio of the deposition amount of the sublimation dye particles in the sublimation ink to the total amount of the sublimation ink, which can be calculated according to the following formula:
  • P represents the dye particle deposition rate (%)
  • A represents the total amount of the heat-sublimation ink
  • B represents the amount of the heat-sublimation ink remaining after the deposited dye particles are removed.
  • the deposition rate of the dye particles in the heat-sublimation ink of the present invention is not more than 4.5%, preferably not more than 4%.
  • the deposition amount of the sublimation dye particles in the sublimation ink of the present invention can be tested as follows: Take a color A sublimation ink of a certain mass A, and pour into a centrifuge of the type Centrifuge Anke TDL-40B (maximum relative centrifugal force 2770 g). The inner diameter of the centrifuge bottle is 30mm and the capacity is 50ml. The amount of ink poured should not exceed 2/3 of the volume of the centrifuge bottle. Set the centrifugal speed to 4000 rpm, the centrifugation time is 30 minutes, and the maximum time is no more than 50 minutes. After the end of the centrifugation, the ink in the centrifuge bottle was poured out until no more ink droplets were dropped, and the mass B of the ink was recorded again.
  • the present invention is not limited to the method of adjusting and controlling the deposition rate of the sublimation dye particles in the sublimation ink, and may be any method in the prior art.
  • several methods can be used for adjustment at the same time.
  • a cyan ink is formed.
  • the sublimation dye is preferably one or more of CI Disperse Blue 14, 28, 56, 60, 72, 73, 77, 334, 336, 359;
  • the sublimation dye constituting the magenta ink is preferably CI Disperse Red 4, 22, 55 One or more of 59, 60, 146, 152, 191, 302;
  • the sublimation dye constituting the yellow ink is preferably CI Disperse Yellow 51, 54, 60, 64, 65, 82, 98, 119, 160, 211 One or several.
  • the content of the color sublimation dye in the color sublimation ink may be appropriately selected according to the use or printing characteristics, and the content of the sublimation dye may be 1 to 30% by weight, preferably 1 to 10% by weight, based on the total weight of the sublimation ink. 5 ⁇ More preferably, it is 1. 5-6 wt%.
  • the average particle size of the sublimation dye is controlled to be 0.01 ⁇ ⁇ -0 - 0.25 ⁇ m, based on the size of the sublimation dye particles. 0. 05 ⁇ ⁇ -0. 2 ⁇ ⁇ .
  • the average particle size herein refers to the average particle size measured using a Horiba particle size analyzer LB-500 (or any instrument that analyzes particle size using dynamic light scattering techniques).
  • the sublimation dye particles are uniformly, long-lasting and stable by using a dispersing agent.
  • the solution is dispersed in water and a water-soluble organic solvent.
  • the choice and amount of dispersant will affect the dye particle deposition rate of the color sublimation ink.
  • the dispersant in the present invention can be selected from dispersants which are known in the art and which can be used for color sublimation inks. 5%-10% ⁇ The content of the dispersant is preferably 0.5%-10%. 0%-10.
  • the yellow ink contains a dispersing agent 1. 0%-10. 0%, the yellow ink contains a dispersing agent 2. 0%-10. 0% ⁇ 0%, 5% - 5. 0%, 0.
  • the dispersing agent may be selected from a lignin having a hydrophilic group or a lignosulfonate, and a lignin having a hydrophilic group may include a hydroxylated lignin such as a phenol-based lignin or a hydroxylignin. , carboxylignin, etc.; lignosulfonates which may be mentioned include sodium lignosulfonate and the like.
  • the main solvent is water.
  • the ink also contains a wetting agent such as ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, glycerin, butanol, 1, 5-pentanediol, 1, 2 6-hexanetriol, pyrrolidone, N-methyl-2-pyrrolidone, isopropanol, ethylene glycol methyl ether, ethylene glycol ether, ethylene glycol butyl ether, diethylene glycol ethyl ether, diethylene glycol butyl ether, etc. a mixture of one or several.
  • a wetting agent such as ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, glycerin, butanol, 1, 5-pentanediol, 1, 2 6-hexanetriol, pyrrolidone, N-methyl-2-pyrrolidone, isopropanol, ethylene glycol methyl ether, ethylene glycol
  • the color sublimation ink of the present invention may further contain various auxiliary agents such as a surfactant, a pH adjuster, an antibacterial agent and the like.
  • the surfactant may be a nonionic surfactant, an anionic surfactant or a zwitterionic surfactant or the like.
  • the pH adjusting agent may be sodium hydroxide, potassium hydroxide, aqueous ammonia, triethylamine, triethanolamine, acetic acid, or lactic acid.
  • Antimicrobial agents that can be cited are PROXEL GXLo from Arch Chemicals, Inc.
  • the ink in the color sublimation ink set of the present invention can be formulated as follows:
  • sublimation dye and a dispersing agent sodium lignosulfonate
  • a dispersing agent sodium lignosulfonate
  • a dispersing agent sodium lignosulfonate
  • the dispersion was taken out and placed in a reaction vessel, and then a certain amount of a wetting agent, an auxiliary agent and deionized water were added in this order, stirred at room temperature for 30 minutes, and aged for 12 hours. Then, it was filtered through a 0.44 ⁇ filter to obtain a sublimation ink.
  • the color sublimation ink set of the present invention through adjustment, selection and matching of dye particle deposition in different color inks, even after long-term storage or deactivation, the printed image still has good color and color balance. Degree, good quality.
  • the color sublimation ink set of this embodiment is composed of five color inks, and the composition of the various color inks is shown in Table 1, inks 1, 2, 3, 4, and 5.
  • the comparative color sublimation ink set is also composed of five color inks, and the composition of the various color inks is shown in Table 1, Comparative Ink 1, 2, 3, 4, 5.
  • the sublimation dye and the dispersing agent sodium lignosulfonate
  • the dispersing agent sodium lignosulfonate
  • the dispersion was taken out into a reaction vessel, and other constituent materials were sequentially added thereto, and stirred at room temperature for 30 minutes. Chenhua 12 hours. It is then filtered through a 0.45 ⁇ filter to obtain a sublimation ink.
  • Test item 1 Sublimation ink sublimation particle deposition rate
  • Test item 2 Print color
  • L value refers to the brightness value in the "L*a*b color system”.
  • the printed color is A level; if ⁇ is greater than 3 and less than 6, the printed color is B level; if ⁇ is greater than 6, the printed color is C level.
  • the A level indicates that the color is visible to the naked eye, and the B level indicates that the color can be visually different.
  • the C level indicates that the color is visually distinct.
  • the dye deposition rate of each of the sublimation inks in the ink set of the example was 4% or less, and the ink set of the example was printed after being left for a long time. There is no significant change in the print color of each color ink compared to the image printed by the set of inks prior to placement.
  • the difference in dye deposition ratio of any two inks in the example group was less than or equal to 2.5%, so that the printing chromatic aberration of any two color inks before and after storage was very close.
  • the color sublimation ink set provided by the present invention controls the deposition rate of the dye particles in the cyan ink, the magenta ink, and the yellow ink to be within a certain value, so that the ink set is printed after the image is left or deactivated for a long time.
  • the color density of the various colors in the image is not significantly different from the color density of the various colors in the image printed before being placed or deactivated, so the initial balance is maintained between the colors, and no significant color imbalance occurs. .

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  • Engineering & Computer Science (AREA)
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Description

彩色热升华墨水组 技术领域
本发明涉及喷墨打印机用的彩色热升华染料墨水,特别是用于喷墨打印机 的彩色热升华墨水组。 本发明基于申请日为 2009 年 12 月 19 日、 申请号为 200910214163. 9 的中国发明专利申请, 该申请的内容作为与本发明密切相关 的参考文献引入本文。 背景技术
喷墨打印机用彩色热升华染料墨水一般采用将升华性染料分散在含有水、 水溶性有机溶剂、分散剂等的水溶液中得到。 当使用该彩色热升华染料墨水在 特定转印介质上使用喷墨打印机打印各种所需图像后,将介质叠放在被转印体 上, 通过加热升华转印从而进行染色。
但是因为升华染料是不溶于水的,升华染料颗粒系通过分散剂等分散在水 或水溶性的有机溶剂中。 因此, 当热升华墨水被长时间储存或放在打印机的墨 盒中长时间不用时, 墨水中的升华染料颗粒就会出现沉积, 该种沉积会导致打 印图像时色彩色密度的降低, 长时间存放前、 后打印的图像有一定的色差。
发明人通过研究发现,当同一彩色热升华墨水组中不同颜色的热升华墨水 中升华染料颗粒的沉积状况严重或差别过大时,墨水组经过长时间储存或长时 间停用后再打印出来的图像会出现色彩失衡。 发明内容
本发明要解决的技术问题是:彩色热升华墨水组在长时间储存或长时间停 用后, 打印图像时出现的色彩失衡问题。
为解决上述技术问题, 本发明提供的技术方案为: 彩色热升华墨水组, 至 少包含一种青色墨水、一种洋红色墨水和一种黄色墨水, 其中每种墨水均含有 升华染料、 分散剂、 有机溶剂和水; 其中, 彩色热升华墨水组中任一种彩色墨 水的染料颗粒的沉积率 P均满足: 0 P 4. 5%。
通过将青色墨水、洋红色墨水、黄色墨水中染料颗粒的沉积率均控制在一 定值内, 使墨水组经长时间放置或停用后再打印图像时, 该图像中各种颜色色 密度与放置或停用前打印的图像中各种颜色的色密度没有明显区别,因此各种 颜色之间依然会保持最初的均衡度, 不会出现明显的色彩失衡现象。
较好的方案为: 青色墨水中升华染料颗粒沉积率 满足: 0 Pe 1. 5%, 黄色墨水中升华染料颗粒沉积率 ΡΥ满足: 0 ΡΥ 3%, 洋红色墨水中升华染料 颗粒沉积率 ΡΜ满足: 0 ΡΜ 4%。
当选择具有上述染料颗粒沉积率的青色墨水、洋红色墨水、黄色墨水搭配 使用时, 由于每种墨水的染料颗粒沉积率均不大, 且不同彩色墨水间染料颗粒 的沉积率均较接近, 因此对打印色失彩失衡的改善效果更加明显。
更好的方案为: 青色墨水中升华染料颗粒沉积率 Pe、黄色墨水中升华染料 颗粒沉积率 ^和洋红色墨水中升华染料颗粒沉积率 PM三者之间满足以下关系: pc<pY<pM
在一套墨水组中,不同颜色墨水的染料颗粒沉积率对打印图像的色彩失衡 程度的影响不同。 当在一套墨水组中青色墨水、 洋红色墨水、 黄色墨水中染料 颗粒的沉积率满足 Pe<PY<PM的条件时, 热升华墨水组即使经过长时间的存放 或停用, 再打印时图像的色彩失衡现象亦非常不明显, 基本不会影响图像的质 再好的方案为: 彩色热升华墨水组中, 任意两种墨水的升华染料颗粒沉积 率之差 ΔΡ满足: 0 ΔΡ5≤2. 5%。 通过调整各彩色墨水的染料颗粒沉积率, 将 任意两种墨水的染料颗粒沉积率之差控制在一定值内,可使各种颜色墨水在长 时间存放或停用前后的打印色差相接近,从而确保彩色墨水组在长时间存放或 停用前后打印的图像色彩无明显区别,有效地解决了热升华墨水在长时间储存 或停用后, 因染料颗粒沉积而导致的色彩失衡问题。
还一方案为: 彩色热升华墨水组由青色墨水、 洋红色墨水、 黄色墨水、 浅 青色墨水和浅洋红色墨水组成, 其中青色墨水的升华染料颗粒沉积率 Pe满足: O^Pc^ l. 5% , 浅青色墨水的升华染料颗粒沉积率 满足: 0 ^PLC^ 1. 5%, 洋 红色墨水的升华染料颗粒沉积率 PM满足: 0 PM 4%, 浅洋红色墨水的升华染 料颗粒沉积率 ΡΜ满足: 0 PLM 4%, 黄色墨水的升华染料颗粒沉积率 Py满足: 0 PY 3%。
还一方案为: 青色墨水中升华染料颗粒沉积率 Pe、黄色墨水中升华染料颗 粒沉积率 PY、洋红色墨水中升华染料颗粒沉积率 ΡΜ、浅青色墨水中升华染料颗 粒沉积率 P E和浅洋红色墨水中升华染料颗粒沉积率 PLM之间满足以下关系:
Figure imgf000004_0001
还一方案为: 青色墨水中升华染料颗粒沉积率 PE、黄色墨水中升华染料颗 粒沉积率 Ργ、洋红色墨水中升华染料颗粒沉积率 ΡΜ、浅青色墨水中升华染料颗 粒沉积率 P E和浅洋红色墨水中升华染料颗粒沉积率 ΡΜ之间满足以下关系:
Figure imgf000004_0002
本发明彩色热升华墨水组对彩色墨水的数量没有严格的限制,可以为三色 墨水组、五色墨水组、七色墨水组、九色墨水组或更多颜色墨水组成的墨水组。 例如:
彩色热升华墨水组可以为由青色墨水、洋红色墨水和黄色墨水组成的三色 墨水组, 优选的, 青色墨水中升华染料颗粒沉积率 不大于 1. 5%, 洋红色墨 水中升华染料颗粒沉积率 PM不大于 4%, 黄色墨水中升华染料颗粒沉积率 不 大于 3%。 更优选的, 青色墨水中升华染料颗粒沉积率 PE小于黄色墨水中升华 染料颗粒沉积率 P" 且黄色墨水中升华染料颗粒沉积率 ΡΥ小于洋红色墨水中 升华染料颗粒沉积率 ΡΜ。
彩色热升华墨水组还可以是由青色墨水、 洋红色墨水、 黄色墨水、 浅青色 墨水和浅洋红色墨水组成的五色墨水组,优选青色墨水的升华染料颗粒沉积率 PC不大于 1. 5%, 浅青色墨水的升华染料颗粒沉积率 1。不大于 1. 5%, 黄色墨水 的升华染料颗粒沉积率 ΡΥ不大于 3%, 洋红色墨水的升华染料颗粒沉积率 ΡΜ不 大于 4%, 浅洋红色墨水的升华染料颗粒沉积率 ί Μ不大于 4%。 更优选的, 青色 墨水中升华染料颗粒沉积率 、黄色墨水中升华染料颗粒沉积率 PY、洋红色墨 水中升华染料颗粒沉积率 ΡΜ、 浅青色墨水中升华染料颗粒沉积率 PLC和浅洋红 色墨水中升华染料颗粒沉积率 PLM之间满足以下关系: PLC< PE < PY < PLM< PM
本发明以上及以下所提及的 "染料颗粒沉积率"指的是热升华墨水中升华 染料颗粒的沉积量与热升华墨水总量的比, 可以按照如下公式计算:
P= 100 X ( A-B ) /A
其中, P表示染料颗粒沉积率 (%); A表示热升华墨水的总量; B表示去 除沉积的染料颗粒后剩余的热升华墨水量。
染料颗粒沉积率越大, 墨水在长期存放或停用后打印图像的色密度越低, 图像质量越差, 色彩失衡越严重。 因此本发明热升华墨水中染料颗粒的沉积率 需不大于 4. 5%, 优选不大于 4%。
本发明热升华墨水中升华染料颗粒的沉积量可以按照如下方法进行测试: 取一定质量 A的彩色热升华墨水, 倒入型号为 Centrifuge Anke TDL-40B 的离心机 (最大相对离心力 2770g) 配套离心瓶中, 离心瓶内径为 30mm,容量 为 50ml, 倒入墨水的量不应超过离心瓶容积的 2/3。 设定离心转速 4000转 / 分, 离心时间为 30分钟, 最长不超过 50分钟。 离心结束后, 将离心瓶中的墨 水倒出直至不再有墨水液滴滴下为止, 再次记录墨水的质量 B。
本发明对调整和控制热升华墨水中升华染料颗粒沉积率的方法没有严格 的限制, 可以是现有技术中的任何方法。 例如, 可以通过选择合适型号的分散 剂、 控制分散剂的用量、 控制升华染料颗粒的粒径、 选择分散设备和 /或控制 分散时间等来调节染料颗粒的沉积率, 可以采用上述方法中的一种, 也可以同 时综合采用几种方法进行调节。
为使彩色热升华墨水具有良好的颜色再现性,作为本发明彩色热升华墨水 中的着色剂,优选那些具有可以被现有喷墨墨水可以接受的色光的彩色热升华 染料, 例如: 组成青色墨水的升华染料优选 C. I. Disperse Blue 14, 28, 56, 60, 72, 73, 77, 334, 336, 359中的一种或几种; 组成洋红色墨水的升华染 料优选 C. I. Disperse Red 4, 22, 55, 59, 60, 146, 152, 191, 302中的一 种或几种; 组成黄色墨水的升华染料优选 C. I. Disperse Yellow 51, 54, 60, 64, 65, 82, 98, 119, 160, 211中的一种或几种。 彩色热升华墨水中彩色热 升华染料的含量可以根据用途或者打印特性做适当选择,相对于热升华墨水的 总重量, 升华染料的含量可以为 1-30重量%, 优选为 1-10重量%, 更优选地为 1. 5-6重量%。
升华染料颗粒的大小对热升华墨水的染料颗粒沉积率有一定的影响,根据 升华染料颗粒大小的不同, 升华染料的平均粒径可以控制在 0. 01 μ ΐη-0. 25 μ m, 优选为 0. 05 μ ηι-0. 2 μ ηι。 这里的平均粒径指的是使用 Horiba particle size analyzer LB-500 (或任何采用动态光散射技术分析颗粒大小的仪器) 测 得的平均粒径。
本发明的彩色热升华墨水中, 采用分散剂将升华染料颗粒均匀、 长久、 稳 定地分散在水和水溶性的有机溶剂中。分散剂的选择和用量会影响彩色热升华 墨水的染料颗粒沉积率。本发明中分散剂可以在现有技术已知的、可以用于彩 色热升华墨水的分散剂中选择。 按重量百分比计, 相对于每款墨水的总重量, 分散剂的含量优选 0. 5%-10%。更加优选地,青色墨水中含分散剂 2. 0%-10. 0%, 洋红色墨水中含分散剂 1. 0%-10. 0%, 黄色墨水中含分散剂 2. 0%-10. 0%, 淡青 色墨水中含分散剂 0. 5%-5. 0%, 淡洋红色墨水中含分散剂 0. 5%-5. 0%。 分散剂 可以选带有亲水基团的木质素或是木质素磺酸盐,可以举出的带有亲水基团的 木质素包括羟基化木质素, 如如酚基木质素, 羟基木质素, 羧基木质素等; 可 以举出的木质素磺酸盐包括木质素磺酸钠等。
本发明的彩色热升华墨水中, 主溶剂为水。为了保证墨水有良好的打印稳 定性, 墨水中还含有润湿剂, 如乙二醇, 二甘醇, 三甘醇、 丙二醇、 甘油、 丁 醇、 1, 5-戊二醇、 1, 2 , 6-己三醇、 吡咯烷酮、 N-甲基 -2-吡咯烷酮, 异丙醇、 乙二醇甲醚、 乙二醇乙醚、 乙二醇丁醚、 二甘醇乙醚、 二甘醇丁醚等的一种或 几种的混合物。
本发明的彩色热升华墨水中还可以含有各种助剂, 如表面活性剂、 PH值 调节剂、 抗菌剂等。表面活性剂可以是非离子表面活性剂、 阴离子表面活性剂 或两性离子表面活性剂等。 PH 值调节剂可以是氢氧化钠、 氢氧化钾、 氨水、 三乙胺、 三乙醇胺、 醋酸、 乳酸。 可以举出的抗菌剂有 Arch Chemicals, Inc 的 PROXEL GXLo
本发明彩色热升华墨水组中的墨水可以按照以下方法配制:
取一定量的升华染料和分散剂(木质素磺酸钠)混合, 在砂磨机(使用锆 珠研磨, 锆珠直径为 0. lmm ) 中研磨分散 20小时, 离心过滤。 后将分散液取 出放入反应釜中, 再依次加入一定量的润湿剂、助剂和去离子水, 室温下搅拌 30分钟, 陈化 12小时。 然后用 0. 45 μ滤膜过滤, 得热升华墨水。
本发明的彩色热升华墨水组, 通过对不同颜色墨水中染料颗粒沉积的调 整、选择及搭配, 即使经过长时间的储存或停用后再使用, 打印出的图像依然 具有良好的色彩和色彩平衡度, 品质优良。
以下结合各实施例对本发明作进一歩说明。 具体实施方式
实施例
本实施例彩色热升华墨水组由五种颜色墨水组成,其中各种颜色墨水的组 成见表 1中的墨水 1、 2、 3、 4、 5。
对比例
对比例彩色热升华墨水组亦由五种颜色墨水组成,其中各种颜色墨水的组 成见表 1中的对比墨水 1、 2、 3、 4、 5。
按照表 1中各墨水的组成, 将升华染料和分散剂 (木质素磺酸钠) 混合, 在砂磨机 (使用锆珠研磨, 锆珠直径为 0. lmm) 中研磨分散 20小时, 离心过 滤。 后将分散液取出放入反应釜中, 再依次加入其它组成物质, 室温下搅拌 30分钟。 陈化 12小时。 然后用 0.45 μ滤膜过滤, 得热升华墨水。
表 1 实施例及比较例的墨水组成
实施例 对比例
洋红 黄色 青色 浅洋 浅青 洋红 黄色 青色 浅洋 浅青 色 红色 色 色 红色 色 墨水 墨水 墨水 墨水 对比 对比 对比 对比
1 2 3 4 5 墨水 墨水 墨水 墨水
1 2 2比
3 4 5
Disperse Red 60 6.0 6.0
Disperse Yellow 54 6.0 6.0
Disperse Blue 359 10.0 10.0
Disperse Red 60 1.5 1.5
Disperse Blue 359 2.4 2.4 木质素磺酸钠(市售) 1.15 2.25 3.2 0.55 0.8 0.58 1.13 1.6 0.28 0.4 二甘醇 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 甘油 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 乳化剂 0P-10 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 去离子水 6LS 6Q75 S8 658 62.42 6187 57.4 67. S 6d2 将实施例中墨水 1-5和对比例中对比墨水 1-5按照如下测试项目进行性能 评价, 性能评价结果见表 2。
测试项目 1 : 升华墨水升华颗粒沉积率
取一定质量 A 的任一彩色热升华墨水, 倒入型号为 Centrifuge Anke TDL-40B的离心机(最大相对离心力 2770g)配套离心瓶中,离心瓶内径为 30mm, 容量为 50ml, 倒入墨水的量不应超过离心瓶容积的 2/3。 设定离心转速 4000 转 /分,离心时间为 30分钟, 最长不超过 50分钟。离心结束后, 将离心瓶中的 墨水倒出直至不再有墨水液滴滴下为止, 再次记录墨水的质量 B。 按照如下公 式 P=100 X (A-B) /A计算墨水中升华染料颗粒的沉积率 (%)。
测试项目 2: 打印色彩
在 Epson Stylus 230 打印机上使用上述墨水, 在 Epson 高光相纸上 (255g) 按 100%的喷墨方式打印 75匪 X 150mm 的色块, 测试其 L^a^ 值。
将上述墨水放置 6个月后,仍在 Epson Stylus R230 打印机上,使用 Epson 高光相纸上 (255g) 按 100%的喷墨方式打印 75mm X 150mm 的色块, 测试其 L2*a2*b2
上述的 "L值"指的是 "L*a*b色彩系统"中的亮度值。
计算色差值 ΔΕ= [ ( - ) 2+ (¾-¾) 2+ (b2— b 2] ½
若 ΔΕ小于 3则打印色彩为 A级;若 ΔΕ大于 3小于 6则打印色彩为 B级; 若 ΔΕ大于 6则打印色彩为 C级。 其中 A级表示色彩肉眼可视无明显区别, B 级表示色彩肉眼可视有轻微区别, C级表示色彩肉眼可视区别明显
从表 2所列数据可以看出,通过调整分散剂用量, 实施例墨水组中每一热 升华墨水的染料沉积率均小于等于 4%, 实施例墨水组在经过长时间放置后再 打印图像时,与放置之前该组墨水打印的图像相比,每种颜色墨水的打印色彩 均无明显变化。另外,实施例组中任意两种墨水的染料沉积率之差均小于等于 2. 5%, 因此存放前后任意两种颜色墨水的打印色差均很接近。 由于同一颜色的 色彩变化不明显, 而不同颜色的色差又都很接近, 因此即使墨水组经过长时间 的存放或停用, 也不会因升华染料沉积而出现色彩失衡。
对比例墨水组中, 大部分热升华墨水的染料沉积率大于 4%, 因此其在经 过长时间放置后再打印图像时, 与放置之前该组墨水打印的图像相比,大部分 墨水的打印色彩均发生明显变化。由于青色墨水的染料沉积率与其它颜色墨水 的染料沉积率之差较大, 导致其色差明显小于其它颜色墨水的色差。 因此, 使 用经长时间存放的对比墨水打印时, 图像的色彩失衡严重, 质量差。
表 2 测试结果
Figure imgf000009_0001
本发明的技术构思并不仅限于上述实施例,还可以依据本明的构思得到许 多不同的具体方案,此等微小改变以及等效变换均应包含在权利要求所述范围 之内。 工业应用性
本发明提供的彩色热升华墨水组, 通过将青色墨水、 洋红色墨水、 黄色墨 水中染料颗粒的沉积率均控制在一定值内,使墨水组经长时间放置或停用后再 打印图像时,该图像中各种颜色色密度与放置或停用前打印的图像中各种颜色 的色密度没有明显区别, 因此各种颜色之间依然会保持最初的均衡度, 不会出 现明显的色彩失衡现象。

Claims

权利要求书
1、 彩色热升华墨水组, 至少包含一种青色墨水、 一种洋红色墨水和一种 黄色墨水, 其中每种墨水均含有升华染料、 分散剂、 有机溶剂和水; 其特征在 于:
所述彩色热升华墨水组中任一种彩色墨水的染料颗粒的沉积率 P均满足: 0^P^4.5%。
2、 根据权利要求 1所述彩色热升华墨水组, 其特征在于:
所述青色墨水中升华染料颗粒沉积率 满足: 0 Pe 1.5%, 所述黄色墨 水中升华染料颗粒沉积率 Ργ满足: ο ργ 3%, 所述洋红色墨水中升华染料颗 粒沉积率 ΡΜ满足: 0 ΡΜ 4%。
3、 根据权利要求 2所述彩色热升华墨水组, 其特征在于:
所述青色墨水中升华染料颗粒沉积率 Pe、黄色墨水中升华染料颗粒沉积率 ΡΥ和洋红色墨水中升华染料颗粒沉积率 PM三者之间满足以下关系:
PC<PY<PM
4、 根据权利要求 1所述彩色热升华墨水组, 其特征在于:
所述彩色热升华墨水组由青色墨水、 洋红色墨水和黄色墨水组成, 其中, 青色墨水中升华染料颗粒沉积率 Pe满足: 0«SPC5S1.5%, 所述黄色墨水中升华 染料颗粒沉积率 ΡΥ满足: 0 ΡΥ 3%, 所述洋红色墨水中升华染料颗粒沉积率 ΡΜ满足: 05ΞΡ„^4%, 而且 Pc、 ΡΥ和 PM三者之间满足以下关系:
pc<pY<pM
5、 根据权利要求 1所述彩色热升华墨水组, 其特征在于:
所述彩色热升华墨水组由青色墨水、 洋红色墨水、 黄色墨水、 浅青色墨水 和浅洋红色墨水组成, 其中所述青色墨水的升华染料颗粒沉积率 Pe满足: 0 l.5%, 所述浅青色墨水的升华染料颗粒沉积率 ί ε满足: 0 PL^≡1.5%, 所 述洋红色墨水的升华染料颗粒沉积率 PM满足: 0 PM 4%, 所述浅洋红色墨水 的升华染料颗粒沉积率 ί Μ满足: 0 ΡΜ 4%, 所述黄色墨水的升华染料颗粒沉 积率 ΡΥ满足: 0 ΡΥ 3%。
6、 根据权利要求 5所述彩色热升华墨水组, 其特征在于: 所述青色墨水中升华染料颗粒沉积率 PE、黄色墨水中升华染料颗粒沉积率 PY、 洋红色墨水中升华染料颗粒沉积率 ΡΜ、 浅青色墨水中升华染料颗粒沉积率 PLC和浅洋红色墨水中升华染料颗粒沉积率 PLM之间满足以下关系:
Figure imgf000011_0001
7、 根据权利要求 6所述彩色热升华墨水组, 其特征在于:
所述青色墨水中升华染料颗粒沉积率 PE、黄色墨水中升华染料颗粒沉积率 PY、 洋红色墨水中升华染料颗粒沉积率 ΡΜ、 浅青色墨水中升华染料颗粒沉积率 PLC和浅洋红色墨水中升华染料颗粒沉积率 PLM之间满足以下关系:
PLC Pc < PY <
Figure imgf000011_0002
PM
8、 根据权利要求 7所述彩色热升华墨水组, 其特征在于:
所述青色墨水中升华染料颗粒沉积率 PE、黄色墨水中升华染料颗粒沉积率 PY、 洋红色墨水中升华染料颗粒沉积率 ΡΜ、 浅青色墨水中升华染料颗粒沉积率 PLC和浅洋红色墨水中升华染料颗粒沉积率 PLM之间满足以下关系:
Figure imgf000011_0003
9、 根据权利要求 1所述彩色热升华墨水组, 其特征在于:
所述彩色热升华墨水组中任一种彩色墨水的染料颗粒的沉积率 P均满足: 0 P 4%。
10、根据权利要求 1至 9中任一项所述的彩色热升华墨水组,其特征在于: 所述彩色热升华墨水组中, 任意两种墨水的升华染料颗粒沉积率之差 Δ Ρ 满足: 05≤ΔΡ 5≤2. 5
1 1、 根据权利要求 10所述彩色热升华墨水组, 其特征在于:
所述彩色墨水中的分散剂选自带有亲水基团的木质素或木质素磺酸盐。
12、 根据权利要求 10所述彩色热升华墨水组, 其特征在于:
按重量百分比, 所述青色墨水含分散剂 2. 0%- 10. 0%, 所述洋红色墨水含 分散剂 1. 0%- 10. 0%, 所述黄色墨水含分散剂 2. 0%- 10. 0%。
PCT/CN2010/079220 2009-12-19 2010-11-29 彩色热升华墨水组 WO2011072571A1 (zh)

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CN101717595B (zh) * 2009-12-19 2012-02-08 珠海保税区天然宝杰数码科技材料有限公司 彩色热升华墨水组
CN105542568B (zh) * 2016-03-08 2019-07-09 珠海天威新材料股份有限公司 用于低克重转印纸的热升华墨水及其打印方法
CN107201681A (zh) * 2017-05-24 2017-09-26 安徽正洁高新材料股份有限公司 一种基于分散黄染料的热升华墨水及其制备方法
CN109021698A (zh) * 2018-08-05 2018-12-18 王忠良 一种水性油墨组合物

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