CN101081952A - Environment-friendly type on-press-coating ink-jet CTP offset master, pigment ink and preparation method thereof - Google Patents

Environment-friendly type on-press-coating ink-jet CTP offset master, pigment ink and preparation method thereof Download PDF

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CN101081952A
CN101081952A CN 200710118701 CN200710118701A CN101081952A CN 101081952 A CN101081952 A CN 101081952A CN 200710118701 CN200710118701 CN 200710118701 CN 200710118701 A CN200710118701 A CN 200710118701A CN 101081952 A CN101081952 A CN 101081952A
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ink
version
paint ink
pigment
paint
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CN101081952B (en
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李三保
秦瑞平
石深泉
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Shi Shenquan
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Abstract

The present invention relates to printing technology, and is one kind of environment friendly ink jetted CTP offset plate, color ink and its making process. The color ink comprising pigment, dispersed polymer emulsion, water soluble cosolvent, surfactant, cross-linking agent and deionized water is prepared through emulsifying and high speed dispersing. The color ink may be printed fluently without ink jet jamming, and the printed ink may be adhered to the plate fast without flowing. Through printing on aluminum base with one ink jet printer and the color ink and plate settling treatment, one environment friendly ink jetted CTP offset plate may be made without need of further treatment. The plate making process is time saving and environment friendly.

Description

Environment-friendly type on-press-coating ink-jet CTP offset master, paint ink and preparation method
Technical field
The present invention relates to the paint ink of a kind of printing plate, particularly a kind of suitable ink-jet printer and the environment-friendly type on-press-coating ink-jet CTP offset master that is made thereof.
Background technology
At present advanced in the world typography is to be the technology of Computer To Plate with CTP technology (Computer to plate).Traditional printing plate one PS version plate-making needs with operations such as graphic arts film, manual impositions.And the CTP technology is just saved film and manual imposition operation.The CTP computer is directly published the simple plate-making process of having brought, but the price of CTP offset plate material such as photosensitive version and temperature-sensitive version doubles manyly than common PS version at present, and the equipment price of processing the CTP plate in addition is costliness especially, so printing cost is very high.According to domestic practical situation, need come the CTP plate of production Computer To Plate with more economical way.
Recent years, ink-jet printer has been obtained very big development, and spray ink Printing speed is fast, resolving power is high, and the price of ink-jet apparatus and ink is lower, thereby the plate-making cost is lower, simple to operate etc.This makes the development of ink-jet Computer To Plate very fast, can be widely used in books and newpapers and periodicals printing.Ink-jet CTP printmaking generally is a PS version type ink-jet CTP version.PS version type ink-jet CTP version is the ink-jet receiving layer that is coated with layer of transparent on common positive PS printing plate again, on the ink-jet receiving layer, print picture and text with ink-jet printer then, get final product the on-hook printing after handling through printing down, development, washing again, it compares technology and corresponding apparatus such as having saved film, manual imposition with traditional PS version mask-making technology, shortened the plate-making time simultaneously, helped reducing cost.The patent of domestic and international most of ink-jet CTP version is this PS version type ink-jet CTP offset master, as CN1295307A, CN1444098A, CN1476988A, CN1818786A etc.But this PS version type ink-jet CTP version still will be used the PS version, promptly will be on aluminium plate base the photoresists of coating solvent type, the process of making a plate simultaneously is identical with the traditional PS version, also want operations such as printing down, development, washing, as control and improperly also can influence plate-making quality, contaminate environment is also wanted in developing solution discharging simultaneously, is unfavorable for environmental protection.
Summary of the invention
For the deficiency at PS version type ink-jet CTP, the environment-friendly type on-press-coating ink-jet CTP offset master that the invention provides a kind of paint ink and be made.The naked version of the environment-friendly type of using paint ink of the present invention to be made into ink-jet CTP version, its manufacture craft is simple, has omitted technologies such as printing down, development, washing, and there is not pollution in environment, has also reduced printing cost simultaneously.
The present invention also provides the preparation method of this paint ink.
A kind of paint ink, mainly form by following material and weight percentage: pigment 5-10%, 50% polymer disperses emulsion 10-20%, water-soluble cosolvent 30-45%, 1% water phase surfactant mixture 1-3%, linking agent 1-3%, deionized water 20-40%.
It is the emulsion of acrylic copolymer that described polymer disperses emulsion
Figure A20071011870100051
M=H wherein +, Na +, K +, NH 4 +R=H, CH 3, COOCH 3, COOC 4H 9R 1=H, CH 3, C 6H 5R 2=COOCH 3, COOC 2H 5M, n are the polymerization degree; The molecular weight M of this acrylic copolymer emulsion is 1000-20000.
The preferred 10000-15000 of described molecular weight M.
Described pigment is black pigment-C.I. Pigment black, and its particle diameter is 100-300nm.
Described water-soluble cosolvent be propyl carbinol, ethylene glycol, polyoxyethylene glycol one or more.
Described tensio-active agent is a kind of nonionic surface active agent polyoxyethylene alkylphenol.
Preferred OP-10, OP-7.
Described linking agent is a hexamethylol melamine resin.
The preparation method of this paint ink is mixed in proportion the back with above-mentioned raw materials and stirs, and through emulsification, high speed dispersion forms paint ink.
The naked version of environment-friendly type ink-jet CTP version, it is characterized in that adopting following method to make: to use above-mentioned paint ink, adopt ink-jet printer directly to be printed on the aluminium plate base of handling through electrolysis, oxidizing process, handle making the naked version of environment-friendly type ink-jet CTP version again through solid version.
In order to make real on-press-coating ink-jet CTP offset master, be implemented in the purpose of directly printing on the aluminium plate base, the invention provides a kind of can on aluminium plate base, the printing, and be fit to go up the paint ink of machine printing.In printing process, generally all water damping printings, so the colorant in the ink can not be used as black pigment with water-soluble dyestuff, and should adopt water-fast pigment to be used as the black ink colorant.Because pigment itself is water-fast, this has just solved the water-proof problem of image, and because the paint ink colour stability is good, and not being subject to light influences and fade.The paint ink of existing a lot of brands on the present market, but they just are used for directly being printed on the paper or printing paper, directly be printed on easily trickling on the aluminium plate base with it, be used for printing as this version, its sticking power and pressrun are also poor, do not print several times just to have come off, therefore in order to adapt to the needs of printing naked version version base, 1), the requirement that adapts to printing of inkjet printer is that the viscosity of ink is suitable the ink of printing naked version version base there is following requirement:, print smoothness and can not stop up black head.2), ink printed can be very fast after on the aluminium plate base attached to the version base on, can not trickle causes that picture and text are fuzzy.3), owing to want the water damping in the printing process, so image is water-fast, uses water-proof paint ink.4), pigment will be stable be dispersed in the ink, can sedimentation.5), in order to improve printing plate resistance force, ink can cause crosslinked by heating, and makes the very fast curing of picture and text.
Paint ink of the present invention adopts pigment, the polymer of certain weight ratio to disperse emulsion, water-soluble cosolvent, tensio-active agent, linking agent and deionized water to mix together, and through emulsification, high speed dispersion forms ink.
Pigment: select black pigment-C.I. Pigment black for use, particle diameter is at 100-300nm, and this particle diameter is difficult for producing the macrobead sedimentation in depositing process, and ink system can be maintained a long-term stability.
Macromolecule dispersing agent: because the colorant of paint ink is the pigment of solid particulate, therefore sedimentation easily is difficult for stable dispersion in water medium, and stop up black head easily, by to the surface of pigments modification,, can not cause sedimentation with macromolecule dispersing agent stable being dispersed in the water medium of pigment.The used macromolecule dispersing agent of the present invention is the acrylic copolymer emulsion, and molecular weight M is 1000-20000, preferred 10000-15000, and its modest viscosity, the paint ink of preparation is difficult for trickling, and its structure is as follows:
Figure A20071011870100071
M=H wherein +, Na +, K +, NH 4 +, R=H, CH 3, COOCH 3, COOC 4H 9, R 1=H, CH 3, C 6H 5, R 2=COOCH 3, COOC 2H 5M, n are the polymerization degree.
Water-soluble cosolvent: water-soluble cosolvent can be adjusted the physical and chemical performance of ink, and as viscosity, surface tension etc., it is fast to have printed after drying, is difficult for trickling.The used water-soluble cosolvent of the present invention is propyl carbinol, ethylene glycol, polyoxyethylene glycol etc.
Tensio-active agent: add tensio-active agent in the marking ink and be used for reducing surface tension, improve the dispersiveness of granules of pigments.Used tensio-active agent is a nonionic surface active agent, the polyoxyethylene alkylphenol, and as OP-10, OP-7 etc.
Linking agent: the selected linking agent of the present invention is a hexamethylol melamine resin, and the genus thermosetting resin when handling through solid version, is subjected to thermofixation, and crosslinked with the acrylic copolymer generation, firm attachment has improved the anti-seal ability of plate on aluminium plate base.
Aluminium plate base uses paint ink of the present invention after handling through electrolysis, oxidizing process, adopts ink-jet printer directly to be printed on the aluminium plate base of handling, through the on-press-coating ink-jet CTP offset master that promptly obtains after the solid edition conventional processing can above machine printing.
Gu it is printed aluminium plate base to be heated down at high temperature (240-250 ℃) improved the sticking power of pigment on aluminium plate base in 3-5 minute that version is handled, and makes the pressrun of this offset plates improve.
This ink printed smoothness, do not stop up black head.The ink that is printed on the aluminium plate base can not trickle attached on the version base very soon, Gu the printing that promptly is available on the machine after the version.
This ink physical index in the time of 20 ℃ is as follows:
The equal 100-300nm of granules of pigments
Ink viscosity 2-4cp
Surface tension 35-40mN/m
Specific conductivity 800-1500US
PH value 8.0-9.5
The printing test situation is normal
Photostabilization 7-8 level
5 grades of photostabilization
Photostabilization 4-5 level
Printing test situation printing pressrun after solid version is handled can reach 2-3 ten thousand seals
The naked version of environment-friendly type of the present invention ink-jet CTP version has following advantage:
(1), belongs to a kind of CTP version type;
Saved material and manual imposition operations such as film, computer is directly published.
(2), mask-making technology is easy, need not PS version conventional machining process;
Having saved operations such as printing down, development, washing, is a kind of processing type CTP plate of exempting from, and has shortened the plate-making time, and non-environmental-pollution, is the environment-friendly type printing plate.
(3), reduced printing cost;
Because of directly on naked version base, printing, do not need film, do not need photoresists, do not need expensive platemaking equipment, and the ink-jet printer price is very low at present, the price of paint ink of the present invention is also low, and the cost of therefore making a plate descends significantly.
Embodiment
The present invention is described in further detail below in conjunction with embodiment.
Embodiment 1:
Restrain 50% vinylformic acid-butyl acrylate copolymer emulsion (M=15000 ± 200) mol ratio vinylformic acid with 12: butyl acrylate=1: 1.2, add the 4g Pigment black therein successively, 2g OP-10 1% aqueous solution, 16g ethylene glycol, the 10g polyoxyethylene glycol, the 2g hexamethylol melamine resin, the 30g deionized water, with rotating speed is that 500 rev/mins stirrer stirred 30 minutes, uses 2000 rev/mins mulser high-speed stirring 30 minutes again, and sand mill was pulverized 80 minutes, regulate pH value to 9 at last, with the filtering with microporous membrane of 0.5-1 μ m, promptly obtain black pigment ink, this ink physical index in the time of 20 ℃ is as follows:
Surface tension 35mN/m,
Viscosity 3.5cp,
Particle diameter d=100nm,
Specific conductivity 1000US,
PH value=9.0.
Embodiment 2:
With 8g 50% styrene-propene acetoacetic ester copolymer emulsion M=(10000 ± 150), mol ratio: vinylbenzene: ethyl propenoate=1.5: 1, add the 7g Pigment black then, 1g OP-7 1% aqueous solution, 20g ethylene glycol, the 15g propyl carbinol, the 2g hexamethylol melamine resin, the 24g deionized water is that 500 rev/mins stirrer stirred 30 minutes with rotating speed, use 10000 rev/mins mulser high-speed stirring 60 minutes again, sand mill was pulverized 120 minutes, regulated pH value to 8 at last, with the filtering with microporous membrane of 0.5-1 μ m, promptly obtain black pigment ink, this ink physical index in the time of 20 ℃ is as follows:
Surface tension 40mN/m,
Viscosity 4.0cp,
Particle diameter d=130nm,
Specific conductivity 1200US,
PH value=8.0.
Embodiment 3:
With 17g 50% MALEIC ANHYDRIDE-methylmethacrylate copolymer (M=10000 ± 150), mol ratio: MALEIC ANHYDRIDE: methyl methacrylate=1: 1, add the 8g Pigment black then, 2g OP-10 10% aqueous solution, 10g ethylene glycol, the 15g polyoxyethylene glycol, the 1g hexamethylol melamine resin, the 32g deionized water is that 500 rev/mins stirrer stirred 30 minutes with rotating speed, use 10000 rev/mins mulser high-speed stirring 60 minutes again, sand mill was pulverized 90 minutes, regulated pH value to 9 at last, with the filtering with microporous membrane of 0.5-1 μ m, promptly obtain black pigment ink, this ink physical index in the time of 20 ℃ is as follows:
Surface tension 35mN/m,
Viscosity 3.5cp,
Particle diameter d=105nm,
Specific conductivity 900US,
PH value=9.0.
Embodiment 4: after aluminium plate base is handled through electrolysis, oxidizing process, the paint ink that uses the embodiment of the invention 3 to make, adopt the EPSON ink-jet printer directly to be printed on the aluminium plate base of handling, through promptly obtain after the solid edition conventional processing can above machine printing on-press-coating ink-jet CTP offset master be environment-friendly type on-press-coating ink-jet CTP offset master of the present invention.
Last machine printing, pressrun can reach 2-3 ten thousand.

Claims (10)

1, a kind of paint ink, mainly form by following material and weight percentage thereof: pigment 5-10%, 50% polymer disperses emulsion 10-20%, water-soluble cosolvent 30-45%, 1% water phase surfactant mixture 1-3%, linking agent 1-3%, deionized water 20-40%.
2, paint ink according to claim 1, it is the emulsion with acrylic copolymer of following array structure that described polymer disperses emulsion,
Figure A2007101187010002C1
M=H wherein +, Na +, K +, NH 4 +R=H, CH 3, COOCH 3, COOC 4H 9R 1=H, CH 3, C 6H 5R 2=COOCH 3, COOC 2H 5M, n are the polymerization degree; The molecular weight M of this acrylic copolymer is 1000-20000.
3, paint ink according to claim 2, the molecular weight M of described acrylic copolymer is 10000-15000.
4, paint ink according to claim 1, described pigment are black pigment-C.I. Pigment blacks, and its particle diameter is 100-300nm.
5, paint ink according to claim 1, described water-soluble cosolvent be in propyl carbinol, ethylene glycol, the polyoxyethylene glycol one or more.
6, paint ink according to claim 1, described tensio-active agent are a kind of nonionic surface active agent polyoxyethylene alkylphenol OP-10 or OP-7.
7, paint ink according to claim 1, described linking agent are hexamethylol melamine resin.
8, the preparation method of the arbitrary described paint ink of claim 1 to 8 is raw material to be mixed in proportion the back stir, and through emulsification, high speed dispersion forms paint ink.
9, the naked version of a kind of environment-friendly type ink-jet CTP version, it is characterized in that adopting following method to make: to use the arbitrary described paint ink of claim 1-8, adopt ink-jet printer directly to be printed on the aluminium plate base of handling through electrolysis, oxidizing process, make and handle through solid version again.
10, the naked version of environment-friendly type according to claim 9 ink-jet CTP version, it is that printed aluminium plate base was heated 3-5 minute under 240-250 ℃ of high temperature that described solid version is handled.
CN 200710118701 2007-07-12 2007-07-12 Environment-friendly type on-press-coating ink-jet CTP offset master, pigment ink and preparation method thereof Expired - Fee Related CN101081952B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101293441B (en) * 2008-06-23 2010-04-14 石深泉 Environment-friendly ink-jet CTP offset master and production method thereof
CN102993823A (en) * 2011-09-08 2013-03-27 中国科学院化学研究所 Water-based ink used in inkjet printing direct-to-plate, and preparation method thereof
CN103804998A (en) * 2014-01-16 2014-05-21 合肥环照高分子材料厂 Special protective adhesive for PS/CTP plates and preparation method thereof
CN105774286A (en) * 2016-03-07 2016-07-20 湖州太德汇印刷器材有限公司 Environment-friendly ink-jet computer-to-plate material
CN107415513A (en) * 2017-05-12 2017-12-01 卢振华 A kind of simple PS versions production technology used in printing PS version method for platemaking
CN112721405A (en) * 2021-01-28 2021-04-30 江苏乐彩印刷材料有限公司 Manufacturing method of spraying photosensitive thermosensitive CTP plate

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CN102807783A (en) 2011-06-02 2012-12-05 中国科学院化学研究所 Ink for printing and directly making plate used in nanometer material and preparation method thereof

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US7091261B1 (en) * 1999-07-29 2006-08-15 Mitsui Chemicals, Inc. Yellow hue compound and aqueous ink for ink-jet recording system using the same
CN100519675C (en) * 2004-06-09 2009-07-29 游在隆 Water soluble pigment ink-jetting printing ink
CN100497489C (en) * 2006-11-23 2009-06-10 上海交通大学 Method for preparing nano pigment water-borne dispersion

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101293441B (en) * 2008-06-23 2010-04-14 石深泉 Environment-friendly ink-jet CTP offset master and production method thereof
CN102993823A (en) * 2011-09-08 2013-03-27 中国科学院化学研究所 Water-based ink used in inkjet printing direct-to-plate, and preparation method thereof
US9127177B2 (en) 2011-09-08 2015-09-08 Institute Of Chemistry, Chinese Academy Of Sciences Water-based ink for computer-to-plate inkjet printing and preparation method therefor
CN103804998A (en) * 2014-01-16 2014-05-21 合肥环照高分子材料厂 Special protective adhesive for PS/CTP plates and preparation method thereof
CN103804998B (en) * 2014-01-16 2016-03-30 合肥环照高分子材料厂 A kind of PS/CTP version privacy protection glue and preparation method thereof
CN105774286A (en) * 2016-03-07 2016-07-20 湖州太德汇印刷器材有限公司 Environment-friendly ink-jet computer-to-plate material
CN107415513A (en) * 2017-05-12 2017-12-01 卢振华 A kind of simple PS versions production technology used in printing PS version method for platemaking
CN112721405A (en) * 2021-01-28 2021-04-30 江苏乐彩印刷材料有限公司 Manufacturing method of spraying photosensitive thermosensitive CTP plate

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