CN101544098B - Ink fountain roller, ink distributing unit and ink distributing system of carving photogravure press - Google Patents
Ink fountain roller, ink distributing unit and ink distributing system of carving photogravure press Download PDFInfo
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- CN101544098B CN101544098B CN200810102686XA CN200810102686A CN101544098B CN 101544098 B CN101544098 B CN 101544098B CN 200810102686X A CN200810102686X A CN 200810102686XA CN 200810102686 A CN200810102686 A CN 200810102686A CN 101544098 B CN101544098 B CN 101544098B
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- 238000007639 printing Methods 0.000 claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000008719 thickening Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 claims 1
- 238000005096 rolling process Methods 0.000 abstract description 4
- 239000000976 ink Substances 0.000 description 168
- 230000000694 effects Effects 0.000 description 7
- 238000007790 scraping Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007646 gravure printing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Printing Methods (AREA)
Abstract
The invention provides an ink fountain roller, an ink distributing unit and an ink distributing system of a carving photogravure press. The ink duct roller is a cavity-die inking roller with quasi-grains at the surface, and the quasi-grains correspond to forme grains; the ink distributing unit comprises an ink fountain, the ink fountain roller, a hook type scraper and an elastic color model roller, wherein the ink fountain roller contacts with ink in the ink fountain, the scraper is arranged at one side of the ink fountain roller, the elastic color model roller is arranged at the other side of the ink fountain roller and is in rolling transmission with the ink fountain roller; and the ink distributing system also comprises a gravure roller and an impression roller. The ink fountain roller of the ink distributing unit transmits ink grains which correspond to the gravure grains and have different thicknesses to the color model roller to form basso-relievo-shaped quasi-grain ink; the basso-relievo-shaped quasi-grain ink is transmitted into the gravure grains on the gravure roller; and the gravure roller and the impression roller mutually press to carry out printing. The invention has short ink path, easily ensures the accuracy of ink distribution and easily maintains the printing adaptability without ineffective circulation for the ink.
Description
Technical Field
The invention relates to an engraving intaglio printing press, in particular to an ink fountain roller of the engraving intaglio printing press for quantitatively discharging ink according to requirements, an ink transfer unit with the ink fountain roller and an ink transfer system with the ink fountain roller.
Background
Fig. 1 is a schematic view of an ink transfer system of a known plate-type multicolor engraving intaglio printing press, wherein only one color set ink transfer path is shown, and the whole ink transfer system is composed of a plurality of color sets. The operation principle is that the ink duct roller 82 and the color mold roller 83 rotate at a constant speed, ink in the ink duct 80 is set through the metering plate 89 to be ink amount and then is coated on the color mold roller 83 in a rolling mode, a raised block-shaped ink painting area is arranged on the color mold roller 83 and corresponds to a plate line area of the ink color on the gravure cylinder 85, and finally the ink on the color mold roller is transferred to a specific plate line area on the gravure.
The gravure printing product of the securities needs to fully fill ink into intaglio plate lines in order to ensure good printing effect and full ink color. Because the depth and density of the plate lines are different, the thickness of the ink to be filled is different, but the traditional ink supply mode can not supply ink according to the depth and density of the plate lines, and can only supply ink according to the ink thickness of the deepest plate line, and the non-plate line part is also inked, so most of the ink transferred to the gravure is wiped off, the effective utilization rate of the ink is low, and the problems of invalid ink consumption and environment are caused.
In the conventional ink supply mode, the ink amount is difficult to accurately adjust by using ink fountain screws, the ink amount is adjusted in the axial direction, the circumferential direction of the ink fountain roller 82 has no ink amount adjusting function, and an ink layer consists of a plurality of annular belts which are arranged in parallel along the axial direction and have different thicknesses.
The invalid consumption of the printing ink of the engraving intaglio plate is large, the defect is caused by a printing process-plate wiping method which is continuously used for hundreds of years, the problem is a difficult problem in the international banknote printing world, foreign and foreign industries relate to the problem, but the treatment effect is still not ideal.
As shown in FIG. 2, a precise ink transfer structure for a cavity plate of a color mold (described in patent publication No. CN1910048, the contents of which are incorporated herein by reference) developed by KBA-GIORI is provided, in which an ink transfer cavity plate is mounted on a color mold roller in a card-loading manner to form a cavity plate 92, an excess amount of ink is transferred to the cavity plate 92 by a roller coating manner by an ink fountain roller 91 with an elastic surface, and then the ink on the surface of the cavity plate is wiped off by a dry wiping roller 97, so that only a concave portion of the cavity plate 92 is filled with ink. The ink in the intaglio is transferred to the intaglio plate 95 by two flexible ink transfer cylinders 93, 94. The ink on the dry wiping roller 97 is scraped off by the scraper 99 and falls into the ink duct 90 for recycling.
The ink path of the scheme of KBA-GIORI company is long, the transmission accuracy is not easy to guarantee, the dry wiping roller 97 cannot wipe the ink on the non-intaglio part on the female die 92 completely, the scraper 99 cannot scrape the ink on the dry wiping roller 97 completely (please refer to fig. 3), the redundant ink is transmitted to the intaglio 95 again, the ink saving effect is poor, the ink is wiped, scraped and circulated in an ineffective way, the volatilization of a solvent and the stability of temperature control are not easy to guarantee, and the printability of the ink is easy to destroy.
Disclosure of Invention
One of the objects of the present invention is: an ink fountain roller of an engraved intaglio printing press is provided to provide the option of dosing ink to intaglio lines as required.
The second purpose of the invention is that: provides an accurate ink transfer unit applied to an engraving intaglio printing press to reduce the huge ineffective consumption of ink.
The third purpose of the invention is: an ink delivery system of an engraved intaglio printing press is provided, which has a short ink path, accurate ink delivery and easily guaranteed printability.
The invention firstly provides an ink fountain roller of an engraving intaglio press, wherein the ink fountain roller is a concave die ink outlet roller with simulated grains on the surface, the simulated grains correspond to printing plate grains and are formed by thickening and deepening the printing plate grains according to a certain proportion.
The invention further provides an ink transfer unit of the engraving intaglio printing machine, which comprises an ink fountain, an ink fountain roller, a scraper and a color model roller, wherein the ink fountain roller is in contact with ink in the ink fountain, the scraper is arranged on one side of the ink fountain roller, the color model roller is arranged on the other side of the ink fountain roller and is in rolling transmission with the ink fountain roller, the ink fountain roller is a female die ink outlet roller with simulated grains on the surface, the simulated grains correspond to the intaglio grains, and the intaglio grains are thickened and deepened according to a certain proportion.
Finally, the invention provides an ink transfer system of an engraving intaglio printing press with more than one ink transfer unit, which further comprises an intaglio cylinder and an impression cylinder; and the ink fountain roller of the ink transfer unit transfers the ink patterns with different thicknesses corresponding to the intaglio patterns to the color mold roller to form the simulated-pattern ink similar to the relief, the simulated-pattern ink with the relief is transferred to the intaglio patterns on the intaglio cylinder, and the intaglio cylinder and the impression cylinder are matched for printing.
The invention has the characteristics and advantages that: the ink delivery system for ink outlet of the ink fountain roller with the pseudo-grain female die has short ink path, the ink delivery accuracy is easy to ensure, the ink has no ineffective circulation, and the printability is easy to maintain. Even if the amount of the ink transferred to the intaglio plate needs to be excessive in order to ensure that the ink amount in the intaglio plate grains is sufficient, and the ink is printed after being wiped cleanly by a wiping roller, the ink transfer method can realize quantitative and accurate ink transfer as required and rough estimation, and can ensure that the ink utilization rate reaches 40-50% or higher; in addition, the hook-type scraper can effectively block the ink in the blank part of the non-grain-simulating concave die in the ink fountain, and the contact included angle between the hook-type scraper and the cambered surface of the concave die roller is approximate to a right angle, so that the hook-type scraper has the effect of preventing ink residue and paper hair from being blocked easily.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein,
fig. 1 is a schematic view of an ink transfer system of a known plate multicolor engraving intaglio printing press.
Fig. 2 shows an accurate ink transfer structure of a color mold female die developed by KBA corporation.
Fig. 3 is a schematic structural view of a general-purpose type known ink fountain quantifying plate.
Fig. 4 is a schematic view showing the structure of a hook blade of an ink transfer unit of the intaglio printing press according to the present invention.
Fig. 5 is a schematic structural diagram of an embodiment of an ink transfer unit of the intaglio printing press according to the present invention.
Fig. 6 is a schematic structural view of the ink delivery system of four color groups of the intaglio printing press according to the present invention.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
The invention firstly provides an ink fountain roller for an engraving intaglio printing machine, please refer to fig. 5, wherein the ink fountain roller is a concave die ink outlet roller 12 with a pseudo-pattern 120 on the surface, and the pseudo-pattern 120 corresponds to an intaglio pattern 150.
In one embodiment of the present invention, the pseudo-lines 120 are enlarged and deepened according to a certain proportion of the plate lines 150, so that the pseudo-line cavity is different in depth and thickness.
Fig. 5 is a schematic structural diagram of an embodiment of an ink transfer unit of the intaglio printing press according to the present invention. As shown in the figure, the ink transfer unit of the intaglio printing press according to the present invention represents a color group ink transfer path, and the ink transfer unit includes an ink fountain 10, an ink fountain roller 12, a color mold roller 13 and a scraper 11, wherein the ink fountain roller 12 contacts with the ink in the ink fountain 10, the scraper 11 is disposed on one side of the ink fountain roller 12, the color mold roller 13 is disposed on the other side of the ink fountain roller and is in rolling transmission with the ink fountain roller 12, wherein the ink fountain roller 12 is a concave mold ink outlet roller having a pseudo-pattern 120 on the surface, and the pseudo-pattern 120 corresponds to the printing plate pattern 150. In the embodiment, the pseudo-pattern 120 is formed by enlarging and deepening the intaglio pattern 150 according to a certain proportion, so that the purpose of accurately and quantitatively transferring ink according to the requirement of the intaglio pattern can be achieved.
Fig. 4 is a schematic structural view of a squeegee used for the ink transfer unit of the engraved intaglio printing press in the present embodiment. Unlike the known ink fountain quantitative plate structure shown in fig. 3, the scraping plate 11 of the present invention is a hook structure, and is made of a wear-resistant material, and includes a body 110 and a scraping hook 111.
Wherein the hook portion 111 is in contact with the side surface of the ink fountain roller 12. In order to achieve a better ink scraping effect, the wedge-type elastic mechanical pressure regulating device is adopted in the embodiment to enable the hook-type scraper to be in pressure contact with the ink fountain roller all the time. As shown in fig. 5, the pressure adjusting means is composed of a blade lift 115, a spring 116, an adjusting screw 117, and the like to maintain a proper pressure between the hook blade and the ink fountain roller. Therefore, the ink can fully enter the concave die of the ink fountain roller 12 by proper ink scraping pressure and ink scraping angle, and the contact included angle of the hook type scraper blade 11 and the cambered surface of the concave die roller is approximate to a right angle, so that the ink fountain roller has the effect of being not easy to block ink residue and paper scraps.
When the ink fountain is used, when the surface of the pseudo-texture die roller rotates out of the ink fountain, the ink in the blank part is blocked in the ink fountain 10 by the scraper 11, only the ink embedded in the printing texture of the die can be transmitted out, and the ink fountain roller 12 transmits to the color model roller 13 not a flat ink layer, but the ink patterns 130 with different thicknesses corresponding to the printing texture 150 to form the pseudo-texture ink similar to the relief shape. These relief-like pseudo-grain inks are transferred to the intaglio patterns 150 on the intaglio cylinder 15, completing the ink transfer process.
In this embodiment, the duct roller 12 is a rigid roller, and the color mold roller 13 is a flexible roller, so that the ink in the concave mold of the duct roller can be transferred to the gravure plate by using the elastic deformation of the color mold roller, and the diameter of the duct roller is the same as that of the color mold roller, and the diameter of the gravure cylinder is multiplied by the diameter of the color mold roller.
The ink fountain roller can have various structures and can be manufactured by different methods, for example, the ink fountain roller can comprise a pseudo-grain concave template and an ink fountain roller body, namely, the pseudo-grain concave template is manufactured firstly, the manufacturing method of the pseudo-grain concave template is similar to that of manufacturing a gravure printing plate, and then the pseudo-grain concave template is adhered, stuck and clamped on the ink fountain roller body to form the ink fountain concave mold roller, and the pseudo-grain concave mold plate is installed on the ink fountain roller body and is easy to install and disassemble. In addition, the ink fountain roller body can be directly engraved with concave lines to form the required ink fountain concave die roller with simulated lines; the simulated lines on the ink fountain roller body can also be pits with various depths engraved in different areas of the ink fountain roller body, and the depth and the area of each pit correspond to the plate lines on the printing plate to form the simulated line screen roller.
The invention also provides an ink transfer system of the engraving intaglio printing press, which comprises more than one ink transfer unit, an intaglio cylinder and an impression cylinder.
As shown in fig. 6, the present embodiment is a schematic structural diagram of an ink transfer system of a single-plate multicolor engraving intaglio printing press using the ink transfer unit, and the present embodiment is 4 colors, but is not limited thereto. The ink transfer system in the figure further comprises a wiping roller arranged on one side of the gravure cylinder, and the wiping roller wipes excess ink distributed on the non-pattern part of the printing plate.
The ink transfer system of the multicolour intaglio printing press shown in figure 6 operates on the principle: when the pseudo-grain gravure cylinder 12 rotates out of the ink fountain 10, most of the ink in the blank part (non-pseudo-grain part) is blocked in the ink fountain 10 by the scraper 11, only the ink in the pseudo-grain can be transferred to the color mold roller 13, and the relief-shaped pseudo-grain ink on the color mold roller 13 is transferred to the printing plate grain 150 on the gravure cylinder 15. The printing ink transferred to the printing plate has a certain excess and is distributed on the local non-plate-line part of the intaglio plate, the non-plate-line part is wiped clean by the wiping roller 17, and then the intaglio plate cylinder 15 and the impression cylinder 19 can be matched for printing.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (10)
1. The utility model provides an engraving press's duct roller, its characterized in that, the duct roller is that the surface has the die of imitating the line to go out the ink roller, imitate the line and correspond with printing plate line, and put thick deepening by printing plate line according to a certain proportion and form to pass black according to the demand ration of printing plate line.
2. The ink fountain roller of an intaglio printing press according to claim 1, comprising a pseudo-grained female stencil and a fountain roller body, said pseudo-grained female stencil being mounted on the fountain roller body so as to constitute a female die roller of the ink fountain for delivering ink.
3. The ink fountain roller of an intaglio printing press according to claim 1, wherein the ink fountain roller comprises an ink fountain roller body, and said pseudo-texture is formed by directly engraving intaglio on the ink fountain roller body.
4. An ink transfer unit of an engraving intaglio press comprises an ink fountain, an ink fountain roller, a hook type scraper blade and a color mold roller, wherein the ink fountain roller is in contact with ink in the ink fountain, the scraper blade is arranged on one side of the ink fountain roller, the color mold roller is arranged on the other side of the ink fountain roller and is in roll transmission with the ink fountain roller, and the ink transfer unit is characterized in that the ink fountain roller is a female mold ink outlet roller with a pseudo-pattern on the surface, the pseudo-pattern corresponds to a printing plate pattern, and the printing plate pattern is formed by thickening and deepening the printing plate pattern according to a certain proportion; when the surface of the ink fountain roller with the simulated lines is rotated out of the ink fountain, the ink in the blank part is blocked in the ink fountain by the scraper, only the ink embedded in the concave die plate lines can be transmitted out, the ink fountain roller transmits the ink patterns with different thicknesses corresponding to the printing plate lines to the color mold roller to form the simulated line ink similar to the relief, and the simulated line ink with the relief is transmitted into the printing plate lines on the printing plate cylinder to finish the ink transmission process.
5. The ink transfer unit of an intaglio printing press according to claim 4, wherein said doctor blade is of hook-type construction comprising a body portion and a doctor hook portion, wherein said doctor hook portion is disposed in contact with the curved surface of said fountain roller.
6. The ink transfer unit of an intaglio printing press according to claim 5, wherein said hook blade is in contact with the curved surface of the matrix roll at an angle of approximately right angle.
7. The ink transfer unit of an intaglio printing press according to claim 5, wherein said hook blade is kept in contact with said duct roller by a wedge-type elastic mechanical pressure regulating device.
8. The ink transfer unit of an intaglio printing press according to claim 4, wherein said duct roller is a rigid roller and said colour mold roller is a flexible roller.
9. The ink transfer unit of an intaglio printing press according to claim 4, wherein said duct roller and said color cylinder have the same diameter, and said intaglio cylinder and said color cylinder have a multiple ratio of the diameter.
10. An ink transfer system of an engraved intaglio printing press having more than one ink transfer unit according to claims 4 to 9, the ink transfer system further comprising a connected intaglio cylinder and an impression cylinder; when the surface of the pattern-simulating concave die ink outlet roller is rotated out of an ink fountain, the ink in the blank part is blocked in the ink fountain by a scraper, only the ink embedded in the pattern of the concave die can be transferred out, the ink fountain roller of the ink transfer unit transfers the ink patterns with different thicknesses corresponding to the pattern of the printing plate to the color mold roller to form the pattern-simulating ink similar to the relief, the pattern-simulating ink with the relief is transferred into the pattern of the printing plate on the gravure cylinder, and the gravure cylinder is matched with the impression cylinder for printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810102686XA CN101544098B (en) | 2008-03-25 | 2008-03-25 | Ink fountain roller, ink distributing unit and ink distributing system of carving photogravure press |
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| CN200810102686XA CN101544098B (en) | 2008-03-25 | 2008-03-25 | Ink fountain roller, ink distributing unit and ink distributing system of carving photogravure press |
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| CN101544098A CN101544098A (en) | 2009-09-30 |
| CN101544098B true CN101544098B (en) | 2012-06-27 |
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| CN200810102686XA Active CN101544098B (en) | 2008-03-25 | 2008-03-25 | Ink fountain roller, ink distributing unit and ink distributing system of carving photogravure press |
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| CN101544098A (en) | 2009-09-30 |
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20090930 Assignee: BEIJING BANKNOTE PRINTING Co.,Ltd. Assignor: CHINA BANKNOTE PRINTING AND MINTING Corp. Contract record no.: 2013110000018 Denomination of invention: Ink fountain roller, ink distributing unit and ink distributing system of carving photogravure press Granted publication date: 20120627 License type: Exclusive License Record date: 20130422 |
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Address after: 100044 Beijing city Xicheng District Xizhimen Street No. 143 Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: 100044 Beijing city Xicheng District Xizhimen Street No. 143 Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |
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| CP01 | Change in the name or title of a patent holder |