CN1295307A - Manufacture and plate-making process of ink-jet computerized printing plate - Google Patents
Manufacture and plate-making process of ink-jet computerized printing plate Download PDFInfo
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- CN1295307A CN1295307A CN 99122249 CN99122249A CN1295307A CN 1295307 A CN1295307 A CN 1295307A CN 99122249 CN99122249 CN 99122249 CN 99122249 A CN99122249 A CN 99122249A CN 1295307 A CN1295307 A CN 1295307A
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Abstract
The present invention introduces direct computerized ink-jetting plate making process of offset printing plate. One image accepting layer comprising water soluble polymer material is first coated onto the photosensitive surface of common aluminium-base offset printing PS plate. During plate making, the graphic information output by a computer ink-jet printer is first imaged directly onto the accepting layer, and through exposure in plate burning machine, water washing to eliminate the accepting layer, development and drying, the plate for printing is manufactured.
Description
In recent years, in offset plate making technology directly the forme manufacturing become the breach and the new growth engines of printing industry new technology revolution already.But directly the production of forme and platemaking equipment thereof is still blank in China.
At present, following five kinds of Computer To Plate plate (being called for short the CTP plate) is arranged on the market.Comprising: the direct forme of silver salt system; Laser light is gathered the direct forme of type; The compound direct forme of silver salt photographic layer and photosensitive resin layer; The direct forme of thermosensitive type; The direct forme of inkjet type etc.The direct forme of inkjet type is the most cheap computer direct printmaking plate.
The direct forme of the ink jet type of Polychrome company is that the CTX platemaking technology of ink-jet printing technology and the said firm is combined, on Alpha Meries jet graph plotter (platform-type), use a kind of hot melt ink jet head (Hot-melt ink-jet head) on the CTX of Polychrome company version, to do ink jet printing, the plate that air brushing is good is used ultraviolet light (UV) exposure subsequently, and printing promptly is available on the machine after the flushing.Claim printing can reach 150,000 seals according to the said firm, after roasting version, printing can surpass 1,000,000 seal.But this CTP plate is only made a plate on IJP-1000 platform platemaking machine, and resolving power only reaches 600dpi, and resolving power is not high.The said firm's plan is arrived 900dpi, 1200dpi to this type of product up-gradation.Gondola Lastra company has developed the direct platemaking machine of ink jet type that resolving power reaches 940 * 940dpi, and fabric width is 508 * 762mm.
The present invention is the direct forme of a kind of and above-mentioned different inkjet type.Its difference is on technology of the present invention is coated on the aqueous solution of water soluble polymer the photographic layer of offset printing PS plate and forms an ink jet image receiving layer.The direct forme of Zhi Zaoing can be without ink special like this, also without the hot melt ink-jet platform device of directly making a plate.Be made up of thin aluminium base little offset printing PS plate and ink jet image layer when direct forme, its aluminum substrate thickness is the 0.10-0.15 millimeter, and such forme can directly use common office to make platemaking equipment with, family expenses ink-jet printer.As adopt companies such as Epson, HP, Canon to produce A
2, A
3, A
4The serial ink-jet printer of breadth, its resolving power reaches as high as 1440dpi * 720dpi, and the four look proof presses plate-making resolving power that adopts Epson to produce also can reach 1440 * 720dpi.Direct platemaking equipment like this is the most cheap, and so direct forme also is the most cheap in the various direct formes.Its cost has only increased an image receiving layer than common offset printing PS plate.More particularly, the aqueous ink of common ink-jet printer is adopted in its imaging ink-jet, rather than special-purpose printing ink, and therefore, this direct forme is easy to promote in the print duplication field of little offset printing.
When if aluminium base thickness surpasses 0.15 millimeter, this direct forme can adopt drum-type air brushing machine in broad width ink jet printer or proof press, the high precision, its size can reach 1200 * 900 millimeters, also can adopt with the matched air brushing platform of this forme imaging mode to prepare equipment.
The present invention relates to the manufacture method and the method for platemaking of the direct forme of a kind of ink-jetting computer offset printing (CTP).
The structure of the direct forme of this offset printing is seen accompanying drawing, (1) computing machine ink jet image receiving layer wherein, (2) positive photosensitive layer, the alumina layer of (3) anodic oxidation, the aluminium base support of (4) metal.
Directly the manufacture method of forme is at common offset printing PS plate photographic layer surface applied one deck ink jet image receiving layer.Its mask-making technology is that the plate-making graph text information that ink-jet printer, proof press or the air brushing machine with high resolution exported computing machine forms picture and text to replace the plate-making process of traditional plate-making silver film original copy through ink-jetting process on image receiving layer, make photographic layer according to after the picture and text exposure that forms on the image receiving layer with ultraviolet light then, image receiving layer is washed off and rinsed well together with the picture and text water of painting thereon.With the development of forme process, drying, printing promptly is available on the machine again.The platemaking equipment that it uses is still legacy equipments such as original printer, developing machine, has only increased low-cost jet graph plotter and has got final product.Therefore at present it is the plate of the most cheap CTP on the domestic and international market.
Image receiving layer is made up of water soluble polymer and some other auxiliary agent.To the requirement of this image receiving layer with usually to the computer painting recording materials require identically, satisfy the requirement of printing down technology when it guarantees to make a plate again simultaneously.
These require as described below:
1, should have bigger receptivity to the jet ink drop;
2, drop in the horizontal direction (X, Y direction) do not flow indiffusion;
3, drop is very fast in vertical direction (Z direction) seepage velocity, and infiltration rate is very fast;
4, better to the fixing of dye ability in the drop;
5, the density of black image should satisfy the requirement of printing down to image density;
6, the line edge of formation picture and text is level and smooth, clear, the vigour of style in writing is sharp keen, and it is stable that the site diameter keeps, and the edge is smooth;
7, image receiving layer is easy to water and washes and do not stay residue, in order to avoid influence the normal development of photographic layer;
8, in the preservation process, directly between the forme laminate surface, or and lining paper between do not stick together;
9, image receiving layer is transparent, obtains distinct image when being beneficial to printing down on photographic layer.
The inventor finds to use the absorbing material of some water soluble polymer as the jet ink drop of image receiving layer, and is aided with some auxiliary agents that formed picture quality requirement is satisfied in adding, can reach above-mentioned requirement.
Water soluble polymer of the present invention comprises two classes, that is: natural polymer and chemosynthesis polymer.
A, natural polymer:
1, gelatin and derivant thereof comprise acid system or alkaline-process gelatin, and gelatine or hide glue all can adopt, and other also has casein etc.
2, cellulose ethers and derivant thereof: this is that a class is the half-natural semisynthetic polymer of a class that raw material makes through chemical modification with the natural fiber.As: methylcellulose, Carboxymethyl Cellulose, hydroxyethyl cellulose, hydroxy propyl cellulose, carboxymethyl cellulose, hydroxyl propionyl methylcellulose and some other derivants.
3, starch and derivant thereof: starch, oxidized starch, carboxylated starch, cationic starch etc.
4, polysaccharide: glucosan, gum arabic etc.
B, synthetic high polymer
Polyvinyl alcohol (PVA), modified polyvinylalcohol, polyoxyethylene, polyvinylpyrrolidone, polyvinyl pyridine salt (halogenide), polyacrylamide and derivant thereof, poly-(methyl) acrylic acid, sodium polyacrylate, polyglycol, poly and derivant thereof etc.
Image receiving layer can be mixed by one or more water soluble polymers and form.The solid content of water soluble polymer in solution is that 5-15% is good.
In order to improve image receiving layer that the aqueous solution polymer formed and the adhesive property between the photographic layer, the aqueous emulsion that can suitably add some synthetic high polymers is regulated.The macromolecule aqueous emulsion that is suitable for has: acrylic acid and acrylate copolymer emulsion, polyvinyl acetate emulsion, vinyl acetate and acrylic acid (ester) copolymer emulsion, ethene-vinyl acetate copolymer emulsion (EVA), carboxy-modified mandelic resin emulsion etc.The emulsion amount that adds is the 10-20% of water soluble polymer weight.
For the dyestuff indiffusion that makes the jet ink drop guarantees that picture quality also can add the dye fixing agent.In order to guarantee coating quality, can add surfactant to improve the wettability of image receiving layer coating solution to photographic layer.Also can add some filler as needs, as: cataloid aqueous solution etc., but be as the criterion with the properties of transparency that does not influence coating.
Other auxiliary agent can also add defoamer, antiseptic, antioxidant, pH regulator agent etc.
Describe below by the application of example, but this patent is not limited to the described content of example this patent.
Example: the image receiving layer coating solution is formed by following component:
Gelatin (gelatine) 7.0g
Polyvinylpyrrolidone (K-40) 1.6g
Acrylic acid-butyl acrylate copolymer emulsion (solid content 50%) 1.4g
Cationic starch 0.7g
Water 100ml
This solution solid content is 9.26%.This solution is coated on the positive PS printing plate light sensitive layer by method of roll coating.Coating weight is: 5g/m
2Dry under＜75 ℃ temperature, get the direct forme of inkjet type offset printing.State in the plate-making mode preamble.
Claims (7)
1, the manufacture method and the method for platemaking thereof of the direct forme of a kind of ink-jetting computer offset printing (CTP).It is characterized in that this edition is to be made of photographic layer coating one deck ink jet image receiving layer that common aluminium base offset printing PS plate reaches in the PS version.
2, direct forme according to claim 1 is characterized in that image receiving layer is made up of water soluble polymer or multiple water soluble polymer potpourri.Water soluble polymer can be water-soluble polymer and/or synthesizing water-solubility polymer and/or their derivant.Water-soluble polymer is: gelatin and derivant thereof, cellulose ethers and derivant thereof, starch and derivant thereof, polysaccharide compound and derivant thereof; The synthesizing water-solubility polymer is: polyvinyl alcohol (PVA), modified polyvinylalcohol, polyvinylpyrrolidone, polyvinyl pyridine salt (halogenide), polyacrylamide and derivant thereof, poly-(methyl) acrylic acid, sodium polyacrylate, polyglycol, poly and derivant thereof etc.Range of solid content in the image receiving layer painting solution is 5-15%.
3, the image receiving layer according to claim 1, for the adhesive property that improves itself and photographic layer can add polyvinyl acetate emulsion, (methyl) acrylic acid and acrylate copolymer emulsion, vinyl acetate-(methyl) acrylate copolymer emulsion, ethene-vinyl acetate copolymer emulsion (EVA emulsion), aqueous polymer dispersions such as carboxy-modified benzene fourth emulsion in the water soluble polymer coating solution.Its addition is the 10-20% of water soluble polymer total amount.
4, the image receiving layer according to claim 1 is for the picture quality that obtains to satisfy the requirement of preparation forme also can add colouring stabilizer and not influence the filler etc. of transparency requirement.
5,1 described image receiving layer as requested in order to obtain good coating coating quality and some other performance demands, also can add the other auxiliary agent, as: surfactant, defoamer, antiseptic, antioxidant, pH agent etc.
6, according to claim 1, be common aluminium base positive offset printing PS plate as another important composition of direct forme, aluminium base thickness is the 0.10-0.30 millimeter, aluminium sheet is through galvanochemistry alligatoring and anodized.Emulsion is that naphthoquinones diazosulfonic acid ester, film forming polymer are lacquer resin in the composition of positive photographic layer.Other composition as, dyestuff, surfactant, development accelerant (promptly improve developing powder, increase development tolerance) etc.
7, according to claim 1, the application process of the direct forme of offset printing of the present invention is: aluminium plate thickness is in the time of≤0.15 millimeter, as quick print or gently print the direct forme of little offset printing and can directly adopt common office with, family expenses ink-jet printer, as platemaking machine, A
2, A
3Or A
4Specification all can.This is a big feature of this patent.Aluminium plate thickness can adopt drum-type air brushing machine in broad width ink jet printer, the high precision (1200 millimeters * 900 millimeters of fabric widths) or the direct platemaking machine of platform-type air brushing to make a plate in time more than 0.15 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99122249 CN1295307A (en) | 1999-11-05 | 1999-11-05 | Manufacture and plate-making process of ink-jet computerized printing plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99122249 CN1295307A (en) | 1999-11-05 | 1999-11-05 | Manufacture and plate-making process of ink-jet computerized printing plate |
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| CN1295307A true CN1295307A (en) | 2001-05-16 |
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| CN 99122249 Pending CN1295307A (en) | 1999-11-05 | 1999-11-05 | Manufacture and plate-making process of ink-jet computerized printing plate |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004059385A1 (en) * | 2002-12-05 | 2004-07-15 | Baizhi Wang | Printing plate making method and the plate made by this method |
| CN101293441B (en) * | 2008-06-23 | 2010-04-14 | 石深泉 | Environment-friendly ink-jet CTP offset master and production method thereof |
| CN102350856A (en) * | 2011-06-28 | 2012-02-15 | 沃奥德（北京）打印机材料有限公司 | Plate making and plate fixing equipment for PS (presensitized) plate |
| CN102464916A (en) * | 2010-11-05 | 2012-05-23 | 中国科学院化学研究所 | Water-based ink for inkjet computer to plate and its preparation method |
| WO2013007203A1 (en) | 2011-07-13 | 2013-01-17 | 中国科学院化学研究所 | Coating material for aluminum substrate for inkjet computer-to-plate and preparation and use of same |
| CN103101347A (en) * | 2011-11-10 | 2013-05-15 | 中国科学院化学研究所 | Metal printing plate and metal printing plate preparation method used for direct plate making of ink-jet printing computer |
| 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 |
| CN106739429A (en) * | 2016-12-28 | 2017-05-31 | 广东凯文印刷有限公司 | A kind of method for platemaking |
| 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 |
-
1999
- 1999-11-05 CN CN 99122249 patent/CN1295307A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004059385A1 (en) * | 2002-12-05 | 2004-07-15 | Baizhi Wang | Printing plate making method and the plate made by this method |
| CN101293441B (en) * | 2008-06-23 | 2010-04-14 | 石深泉 | Environment-friendly ink-jet CTP offset master and production method thereof |
| CN102464916A (en) * | 2010-11-05 | 2012-05-23 | 中国科学院化学研究所 | Water-based ink for inkjet computer to plate and its preparation method |
| CN102350856A (en) * | 2011-06-28 | 2012-02-15 | 沃奥德（北京）打印机材料有限公司 | Plate making and plate fixing equipment for PS (presensitized) plate |
| WO2013007203A1 (en) | 2011-07-13 | 2013-01-17 | 中国科学院化学研究所 | Coating material for aluminum substrate for inkjet computer-to-plate and preparation and use of same |
| US9493672B2 (en) | 2011-07-13 | 2016-11-15 | Institute Of Chemistry, Chinese Academy Of Sciences | Coating material for aluminum substrate for inkjet computer-to-plate and preparation and use of same |
| CN103101347A (en) * | 2011-11-10 | 2013-05-15 | 中国科学院化学研究所 | Metal printing plate and metal printing plate preparation method used for direct plate making of ink-jet printing computer |
| CN103101347B (en) * | 2011-11-10 | 2015-03-11 | 中国科学院化学研究所 | Metal printing plate and metal printing plate preparation method used for direct plate making of ink-jet printing computer |
| 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 |
| CN106739429A (en) * | 2016-12-28 | 2017-05-31 | 广东凯文印刷有限公司 | A kind of method for platemaking |
| 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 |
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