CN1145852A - Computer direct master-making method and digital printer - Google Patents
Computer direct master-making method and digital printer Download PDFInfo
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- CN1145852A CN1145852A CN 96110546 CN96110546A CN1145852A CN 1145852 A CN1145852 A CN 1145852A CN 96110546 CN96110546 CN 96110546 CN 96110546 A CN96110546 A CN 96110546A CN 1145852 A CN1145852 A CN 1145852A
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Abstract
The present invention relates to computer output equipment, plate making equipment and printing machinery. The plate making process is one spraying lipohilic resin on the surface of hydrophilic metal plate and features its low cost, no need of painting photosensitive plate and easy reuse of plate material. The digital printer is one spraying lipohilic resin on the surface of hydrophilic metal plate drum and features its low cost and long service life of drum, use of common printing ink and high printing speed.
Description
A kind of CTP method and digital printing machine relate to computer output device, platemaking equipment and printing machinery.
At present, lithographic method for platemaking generally adopts the photochemical reaction method.With the domestic positive-type PS version that generally adopts is that positive-type pre-coating photopolymer plate is an example, and its plate is that coating one deck light breakdown type diazonium photosensitive resin constitutes on the aluminium sheet after the hydrophilic treated.Because the speed of this plate is lower, need under high light, to expose.During plate-making, with the topped PS version of positive master driving fit surface, expose under the intense light source that ultraviolet ray is enriched, the diazonium photosensitive resin of non-graphic part sees that light decomposes, and is developed liquid and removes, and stays the diazonium photosensitive resin that remaining on the version do not seen light.The oleophilic moiety of PS version is the high diazonium photosensitive resin of publishing the about 3 μ m of base plane, is good oleophilic drainage film; The hydrophilic segment of PS version is the alundum (Al film on edition base.
Computer seal preprocessing system is to output on the photographic film with the composing result of laser photocomposing machine with computer, obtains positive-type master or the negative type master that printing down is used through operations such as development, photographic fixing, dryings, shines system PS version with traditional printing down method again.In recent years, the method for CTP has appearred, not even the digital printer that must make a plate.Existing division is as follows:
1. use the laser photocomposing machine of high power laser and the direct method for platemaking of common PS version.This method because of the power of its laser instrument is very big, can make the lower PS version of speed expose at short notice, thereby, can realize CTP.This method though realized CTP, is simplified plate-making process, has saved intermediate---the photographic film of plate-making, and equipment price height, shortcoming that power consumption is big are arranged.
2. use the direct method for platemaking of common laser film setter and two coating PS versions.This method, be on the diazonium photosensitive resin coating of common PS version, to be coated with the agent of one deck light-sensitive silver halide again, the laser beam of common laser film setter can make light-sensitive silver halide agent normal exposure, after development, photographic fixing, drying, the silver halide of sensitization forms the picture and text of black on PS version surface, carry out unscreened exposure again under high light, development, the drying means by the PS version promptly obtains forme after handling again.This method though realized CTP, does not reduce plate-making process, has only saved the sheet base section of photographic film, does not save precious metals silver.
More than two kinds of computers directly tie the method for plate-making, its common shortcoming is all will be with PS version plate-making, and can not make a plate on the metallograph of uncoated photosensitive resin.
3. laser method digital printer.This printing machine has the roller frame similar to common offset machine, its plate cylinder is a photosensitive roller, be similar to the photosensitive drums of laser printer or duplicator, laser beam is under computer control, form the picture and text latent image at the plate cylinder surface scan, special e-inks is transferred to the sensitization part of this cylinder surface under effect of electric field, form picture and text, transfers on the stock through the rubber cylinder that is wrapped in electronics rubber again.This printing machine has been realized no Plate making printing, but exist equipment price height, photosensitive roller life-span short, need shortcomings such as special electronic printing ink, print speed printing speed are low.
The objective of the invention is:
1. be implemented on the metal with hydrophilic fuel shedding quality of uncoated photosensitive resin and directly make lithographic forme with computer.
2. realize making plate cylinder, do not have Plate making printing with common ink with common metal roller with hydrophilic fuel shedding quality, promptly digital printed.
For this reason, adopt following technical scheme:
1. adopt the mode of ink-jet to make a plate.Be with the difference of common ink-jetting style: store in the ink gun and what spray under computer control is not ink, but after being dissolved in drying and forming-film in the solvent of quick volatilization the high resin of good lipophile strong adhesion abrasion resistance is arranged; Stock is the metal with good hydrophilic fuel shedding quality.
2. digital printer adopts the roller frame identical with common offset machine, water delivery, inking, paper feed mechanism, use identical printing ink and fountain solution, the difference of itself and common offset machine is: directly as forme, its outer surface is that the metal with hydrophilic fuel shedding quality is made with the outer surface of plate cylinder; Ink gun and the corresponding driving device that can spray picture and text under computer control at the plate cylinder outer surface are arranged; After storing the drying and forming-film that also can under computer control, spray in the solvent that is dissolved in quick volatilization in the ink gun the high resin of good lipophile strong adhesion abrasion resistance is arranged.
The present invention compared with prior art has following beneficial effect:
1. reduced the plate-making cost.Owing to use the metallic plate of uncoated photosensitive resin to make plate, the corresponding simplification of its plate production process is compared with using the PS version, and the plate cost is low, and forme reclaim use again also simple, as long as remove printing ink and resin on the forme with solvent.
2. simplified mask-making technology.The printing that promptly is available on the machine after the forme drying is compared than technology is the simplest in the prior art, has also saved PS version developing procedure.
3. digital printer is easy to manufacture, and cost is low.Digital printer of the present invention and common offset machine are very approaching, compare with the laser method digital printer, and easy to manufacture, cost is low.
4. the digital printer use cost is low.Digital printer of the present invention adopts metal roller to make plate cylinder, compares long service life with the usability bare-barrel drum; Use common ink, than using e-inks to compare, price is low, and is wide in variety.
5. the digital printer print speed printing speed is fast.Digital printer of the present invention can once be made a plate, many printings, and than one on laser method digital printer single pass seal, speed is fast.
Embodiment one: plate and resin
1. the used plate of the present invention can use aluminium, chromium, stainless steel.
Aluminium: form the coarse alundum (Al film of the about 2-3 μ of one deck m after the alligatoring of aluminium plate process, the anodic oxidation on its surface, this layer film has good hydrophilic oleophobic property.
Chromium and stainless steel: chromium and stainless steel hardness are higher, be difficult for forming husky order, but its smooth surface just have good hydrophilic oleophobic property.The price height of chromium can adopt the method for chromium plating on low carbon steel plate.
2. resin of the present invention, can adopt the used resin of making in the PS version emulsion of film forming agent, as: the EVA of P-F resinoid, polyvinyl alcohol and derivative thereof, polymethylacrylic acid and derivative thereof, styrene and maleic anhydride, polyamide, epoxy resin and modified cellulose etc.Solvent is selected, and boiling point is difficult for too high, can not be low excessively, and high dry difficulty, the low too fast adhesive force deficiency of drying.Can use ethylene glycol monomethyl ether, ethylene glycol monoemethyl ether, cyclohexanone, dimethyl formamide, diglycol butanone, MEK, fourth lactones, penta lactones etc.In order to improve the press resistance rate of forme, also should add an amount of plasticizer in the resin, as: phthalic acid dibutylester, o-phthalic acid dibutyl ester, the hot fat of tricresyl phosphate etc.For the ease of checking the plate-making effect of forme, can in resin, add the dyestuff of trace.
Embodiment two: digital printer
Primary structure and parts:
1. plate cylinder: four open and above digital printer, adopt the steel cylinder, polish after the outer surface chromium plating, have good hydrophilic oleophobic property; The octavo digital printer adopts the aluminum cylinder, carries out anodized after the outer surface polishing, has good hydrophilic oleophobic property.
2. can resin in the ink gun: with embodiment one.
3. drive unit: this machine has two cover cylinder Power Drive Units, the main drive gear that a cover is used for normal printshop, and identical with common offset machine, another set of is the accurate step drive device that uses in the plate-making process, is subjected to computer control.
4. wiper mechanism: this machine is equipped with two cover wiper mechanisms, and a cover is used for cleaning the printing ink of plate cylinder and rubber cylinder, another set ofly is used for cleaning the resin that forms picture and text on the plate cylinder.
5. drying device: in the plate-making process, be used for dry plate cylinder in resin on the dry plate cylinder and the cleaning process.
6. water supply, ink supply and defeated paper, paper collecting mechanism: identical with common offset machine.
The course of work:
1. plate-making: at first, plate cylinder breaks away from main drive gear, changes by accurate step drive device to drive.Then, under computer control, ink gun and plate cylinder are done relative motion, the result of computer composition is outputed on the plate cylinder, after all having sprayed, start drying device, behind the resin drying on plate cylinder surface, become lithographic plate, its oleophilic moiety be exceed plate cylinder surface 2-3 μ m by ink gun in ejection under the computer control and the resin part that obtains after by the drying device drying, be good oleophilic drainage film, its hydrophilic segment, crome metal or aluminium for plate cylinder surface non-graphic part have good hydrophilic oleophobic property.Plate cylinder breaks away from accurate step drive device after turning to original position, recovers to combine with main drive gear.
2. printing: identical with traditional offset press.
3. clean: after finishing the regulation printing, plate cylinder and rubber cylinder, by a version damping roller, disengage by a version ink roller, start wiper mechanism, clean the printing ink on plate cylinder and rubber cylinder surface earlier, and then the resin on cleaning plate cylinder surface, after cleaning is finished, throw off wiper mechanism, start drying device, dry plate cylinder, drying finishes, and plate cylinder stops after forwarding original position to, waits for plate-making, print cycle next time.
Claims (2)
1. CTP method, the plate-making of employing ink-jetting style, it is characterized in that: store in the ink gun and what spray under computer control is that the high resin of good lipophile strong adhesion abrasion resistance is arranged behind the drying and forming-film that is dissolved in the volatile solvent, stock is the metal with good hydrophilic oleophobic property surface.
2. digital printing machine, constitute by plate cylinder, rubber cylinder, impression cylinder and water delivery, inking, paper feed mechanism, wiper mechanism, drier etc., it is characterized in that: directly as forme, its outer surface is the metal with hydrophilic oleophobic property with the outer surface of plate cylinder; Ink gun and the corresponding driving device that can spray picture and text under computer control on the plate cylinder surface are arranged; Store in the ink gun and what spray under computer control is that the high resin of good lipophile strong adhesion abrasion resistance is arranged behind the drying and forming-film that is dissolved in the volatile solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96110546 CN1145852A (en) | 1996-07-21 | 1996-07-21 | Computer direct master-making method and digital printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96110546 CN1145852A (en) | 1996-07-21 | 1996-07-21 | Computer direct master-making method and digital printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1145852A true CN1145852A (en) | 1997-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96110546 Pending CN1145852A (en) | 1996-07-21 | 1996-07-21 | Computer direct master-making method and digital printer |
Country Status (1)
| Country | Link |
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| CN (1) | CN1145852A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305672C (en) * | 2003-09-18 | 2007-03-21 | 林伟强 | Single. plate printing method with multigang monochromatic or polychromatic block for monochromatic offset press |
| WO2012094847A1 (en) * | 2011-01-13 | 2012-07-19 | Li Huarong | Developing device based on display module and electrophotographic image forming apparatus |
| CN102615927A (en) * | 2012-03-20 | 2012-08-01 | 丹东金丸集团有限公司 | Printing device for nano-material direct plate-making machine and control method for printing device |
| CN104786630A (en) * | 2014-01-20 | 2015-07-22 | 中国科学院苏州纳米技术与纳米仿生研究所 | Gravure plate, and manufacturing method and application of gravure plate |
| CN105856883A (en) * | 2016-04-26 | 2016-08-17 | 东莞市上合旺盈印刷有限公司 | Digital colorful water-free offset printing technology for offset printing |
| CN110816095A (en) * | 2019-09-17 | 2020-02-21 | 昆山佳合纸制品科技股份有限公司 | Printing process of green environment-friendly packaging box |
-
1996
- 1996-07-21 CN CN 96110546 patent/CN1145852A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305672C (en) * | 2003-09-18 | 2007-03-21 | 林伟强 | Single. plate printing method with multigang monochromatic or polychromatic block for monochromatic offset press |
| WO2012094847A1 (en) * | 2011-01-13 | 2012-07-19 | Li Huarong | Developing device based on display module and electrophotographic image forming apparatus |
| CN102615927A (en) * | 2012-03-20 | 2012-08-01 | 丹东金丸集团有限公司 | Printing device for nano-material direct plate-making machine and control method for printing device |
| CN102615927B (en) * | 2012-03-20 | 2013-11-27 | 丹东金丸集团有限公司 | Printing device for nano-material direct plate-making machine and control method for printing device |
| CN104786630A (en) * | 2014-01-20 | 2015-07-22 | 中国科学院苏州纳米技术与纳米仿生研究所 | Gravure plate, and manufacturing method and application of gravure plate |
| CN105856883A (en) * | 2016-04-26 | 2016-08-17 | 东莞市上合旺盈印刷有限公司 | Digital colorful water-free offset printing technology for offset printing |
| CN110816095A (en) * | 2019-09-17 | 2020-02-21 | 昆山佳合纸制品科技股份有限公司 | Printing process of green environment-friendly packaging box |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |