CN108909155B - Combined printing machine for producing safety documents - Google Patents
Combined printing machine for producing safety documents Download PDFInfo
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- CN108909155B CN108909155B CN201810710458.4A CN201810710458A CN108909155B CN 108909155 B CN108909155 B CN 108909155B CN 201810710458 A CN201810710458 A CN 201810710458A CN 108909155 B CN108909155 B CN 108909155B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
- B41F19/08—Simultaneous moulding and printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0403—Drying webs
- B41F23/0406—Drying webs by radiation
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Abstract
The invention discloses a combined printing machine for producing security documents, which is used for processing printed materials in a single sheet form or a continuous web form and comprises a paper feeding group, a flexo and optical lens mould pressing group and an intaglio printing group, wherein the paper feeding group is arranged at the upstream of the flexo and optical lens mould pressing group, and the intaglio printing group is arranged at the downstream of the flexo and optical lens mould pressing group. The combined printer provided by the invention can combine the flexo printing unit, the optical micro-lens mould pressing unit and the gravure printing group, and can finish the operation by one-time paper feeding, so that a pattern with higher anti-counterfeiting performance is formed.
Description
Technical Field
The invention relates to the technical field of printing equipment, in particular to a combined printing machine for producing security documents, which is used for producing security documents (such as bank notes).
Background
The optical microlens array technology is a well-known optical technology, and an amplified dynamic visual effect can be generated between a microlens array and a micro-pattern array matched with the microlens array, and the amplified visual effect cannot be copied and counterfeited by a conventional copying means, so that the optical microlens array technology is widely applied to anti-counterfeiting security products.
Patent CN2002123770.0 discloses a gravure printing apparatus, method and printed product thereof. The equipment can input the printing stock at intervals, wherein the number of the printing plates and the number of the printing plates are 2: 3, the printing plate cylinder and the transfer printing/impression cylinder complete double-sided printing once through rolling impression, and at least one side of the printing plate cylinder and the transfer printing/impression cylinder is provided with a printing product with uneven hand feeling. The equipment protected by the patent can realize the mirror image gravure offset printing of the patterns on the two sides of the printing stock, and the offset printing precision of the equipment is far higher than that of a commercial offset press, so that the printing stock has higher anti-counterfeiting capability.
The flexible plate printing technology is a known traditional printing technology and is mainly technically characterized in that a printing plate is high in elasticity, ink is directly supplied to the printing plate through a short ink circuit system with an anilox roller, the printing plate is in contact with a printing stock to perform direct printing, and the short ink circuit system can transfer a printing coating with high fluidity and perform coating printing.
The micro-lens array characteristic, the gravure offset characteristic and the flexo characteristic are all independently printed by respective related printing equipment, and because the printed material is deformed in size after being printed, the characteristics cannot achieve accurate overprint relation after being printed successively.
Therefore, the technical problem to be solved by the present invention is how to provide a combination printer for producing a security document, which can combine a flexo printing unit, an optical microlens molding unit and a gravure printing group and can complete the combination by one-time paper feeding to form a pattern with higher anti-counterfeiting performance.
Disclosure of Invention
In view of the above, the present invention provides a combination printer for producing a security document, which combines a flexo printing unit, an optical microlens molding unit and a gravure printing group, and can complete the process by one-time paper feeding, so that the flexo printing pattern, the optical microlens array and the gravure pattern can be precisely overprinted and combined to form a pattern with higher anti-counterfeiting performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a combined printing machine for the production of security documents, for processing substrates in sheet or continuous web form, comprising a feed group, a flexo and optical lens press group and an intaglio printing group, the feed group being arranged upstream of the flexo and optical lens press group and the intaglio printing group being arranged downstream of the flexo and optical lens press group; the flexible printing and optical lens mould pressing group comprises a flexible printing unit, an optical lens mould pressing unit and a plurality of drying and curing units, wherein the upstream of the optical lens mould pressing unit is connected with the flexible printing unit, and the downstream of the optical lens mould pressing unit is connected with the drying and curing units; the flexo printing unit respectively prints a flexo printing ink pattern and an optical lens coating on two sides of a printing stock, and one side coated with the optical lens coating forms an optical lens coating; the optical lens mould pressing unit is used for carrying out mould pressing and curing on the optical lens coating to form an optical micro-lens array; a plurality of the dry curing units are used for curing and drying the flexo ink pattern and the optical microlens array before the printing stock is transferred to the gravure printing group.
The combined printer combines the flexo printing unit, the optical micro-lens mould pressing unit and the gravure printing group, and can complete the combination by one-time paper feeding, so that the flexo printing pattern, the optical micro-lens array and the gravure pattern can be accurately overprinted to form a pattern with higher anti-counterfeiting performance. The flexible printing unit prints flexible printing ink patterns or optical lens coating on one side and the other side of a printing stock, and the drying and curing unit is used for drying and curing the ink patterns of the printing stock.
Preferably, the paper feeding group comprises a paper feeder, a paper conveying plate and a paper feeding roller, one end of the paper conveying plate is connected with the paper feeder, the other end of the paper conveying plate is connected with the paper feeding roller, and the paper feeding roller is connected with the flexo printing unit. The sheet-fed printing material is fed from a position in the associated feeder through a sheet feed plate and a sheet feed roller into a flexo unit for a printing process.
Preferably, the flexographic printing unit comprises a first flexographic printing impression cylinder, a first ink supply device and a first flexographic printing plate cylinder, the first flexographic printing plate cylinder and the drying and curing unit are surrounded around the first flexographic printing impression cylinder, and the first ink supply device is arranged on one side of the first flexographic printing plate cylinder and supplies ink to the first flexographic printing plate cylinder; the drying and curing unit is arranged downstream of the first flexographic plate cylinder. The drying and curing unit is used for drying and curing the ink patterns printed by the first flexographic printing plate cylinder.
The flexographic printing unit further comprises: a second flexographic impression cylinder and a second flexographic plate cylinder, the second flexographic impression cylinder and the second flexographic plate cylinder being matched; the second flexo impression cylinder is arranged at the downstream of the first flexo impression cylinder, and one side of the second flexo printing plate cylinder is provided with the first ink supply device which supplies ink to the second flexo printing plate cylinder. And the second flexo printing plate prints flexo printing ink or coats a micro-lens coating on the other side of the printing stock.
Preferably, the first and second flexographic printing cylinders are double diameter cylinders having two stamping surfaces, and the first and second flexographic printing plate cylinders are single diameter cylinders.
Preferably, the optical lens molding unit includes: the device comprises a lens mould pressing roller, a compression roller, a first transfer roller, a second transfer roller and a third transfer roller, wherein the compression roller and the drying and curing unit are distributed around the lens mould pressing roller, and the compression roller is positioned at the upstream of the drying and curing unit; the first transfer roller is arranged at the downstream of the lens mould pressing roller, and one drying and curing unit is arranged around the first transfer roller; drying and curing the patterns printed on the printing stock by the flexible printing and optical micro-lens mould pressing group; the second transfer roller is disposed downstream of the first transfer roller, and the third transfer roller is disposed downstream of the second transfer roller. The substrate is transferred by a third transfer cylinder into the intaglio printing group.
Preferably, the dry curing unit is a UV curing unit or a UV-L ED curing unit.
Preferably, the gravure printing group comprises: the printing plate comprises an impression cylinder, a printing plate cylinder, an ink supply system and a plate wiping system, wherein the impression cylinder is matched with the printing plate cylinder, and the plate wiping system and the ink supply system are positioned around the printing plate cylinder. The impression cylinder carries a sheet of printing material from the flexo and optical microlens embossing sets through a printing nip formed between the impression cylinder and a plate cylinder carrying two engraved intaglio plates inked by an ink feed system and wiped by a wiping system.
Preferably, the ink supply system includes: the color collecting cylinder is matched with the plate cylinder, and the 3 color model cylinders are transferred to the color collecting cylinder from the ink collected by the second ink supply device; the gravure printing group further includes: a fourth transfer cylinder disposed downstream of the impression cylinder and upstream of the fifth transfer cylinder.
Preferably, the ink supply system includes: the four color mold cylinders transfer the ink collected by the second ink supply system to the plate cylinder.
Preferably, the combination printing press further comprises a first fixed frame for supporting the flexo and optical lens molding group, a second fixed frame and a movable support for supporting the gravure group, and a chain path cylinder for transferring the printed substrate after printing.
According to the technical scheme, compared with the prior art, the combined printing machine for producing the security documents is provided, the flexo printing unit, the optical microlens mould pressing unit and the gravure printing unit are combined, and the operation can be completed through one-time paper feeding, so that the flexo printing pattern, the optical microlens array and the gravure pattern can be accurately overprinted and combined, and the pattern with higher anti-counterfeiting performance is formed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic top view of a first embodiment of the present invention.
Fig. 2 is a schematic top view of a structure of a second embodiment of the present invention.
Wherein the reference numerals in the drawings refer to:
1 is a paper feeding group, 2 is a flexo printing and optical lens mould pressing group, and 3 is a gravure printing group;
a paper feeder 11, a paper conveying plate 12 and a paper feeding roller 13;
21 is a flexible printing unit, 22 is an optical lens mould pressing unit, and 23 is a drying and curing unit;
211 is a first flexographic impression cylinder, 212 is a first inking device, 213 is a first flexographic plate cylinder, 214 is a second flexographic impression cylinder, 215 is a second flexographic plate cylinder;
221 is a lens molding cylinder, 222 is a pressure roller, 223 is a first transfer cylinder, 224 is a second transfer cylinder, and 225 is a third transfer cylinder;
31 is an impression cylinder, 32 is a plate cylinder, 34 is a wiping system, 35 is a fourth transfer cylinder, and 36 is a fifth transfer cylinder;
331 is a color collecting roller, 332 is a color mold roller, and 333 is a second ink supply device;
4 is a first fixed frame;
5 is a second fixed frame;
6 is a movable frame;
and 7 is a chain path roller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a combined printing machine for producing a security document, which combines a flexo printing and optical microlens mold pressing group and a gravure printing group and can complete the combination by one-time paper feeding, so that the flexo printing pattern, the optical microlens array and the gravure pattern can be accurately overprinted and combined to form a pattern with higher anti-counterfeiting performance.
Example 1
This embodiment can be used for processing continuous or sheet-fed printing substrates which are passed through the printing press from a sheet feeder positioned upstream of the relevant printing group to a sheet take-up positioned downstream of the relevant printing group. The sheet-fed printing material is fed continuously or in separate sheets from a sheet feeder 11 onto a sheet feed plate 12 and is then delivered by a sheet feed cylinder 13 to the flexo and optical lens embossing group 2 and then to the gravure printing group 3 for printing.
Referring to fig. 1, the combination printer includes a paper feeding set 1, a flexo and optical lens molding set 2, and a gravure printing set 3, wherein the flexo and optical lens molding set includes a flexo unit, an optical lens molding unit, and a dry curing unit.
The first flexographic impression cylinder 211, the first flexographic plate cylinder 213, the second flexographic impression cylinder 214, the second flexographic plate cylinder 215, the lens molding cylinder 221, the pressure roller 222, the first transfer cylinder 223, the second transfer cylinder 224, the third transfer cylinder 225 of the flexographic unit are strongly fixed in the first stationary frame 4;
the first flexographic plate cylinder 213 and the drying and curing unit 23 are sequentially distributed around the first flexographic impression cylinder 211 according to the direction of transfer of the printing material, and the first ink supply device 212 is adapted to the first flexographic plate cylinder 213 to supply ink to the first flexographic plate cylinder 213. Downstream of the first flexographic plate cylinder 213 is a second flexographic plate cylinder 215, the second flexographic plate cylinder 215 being distributed around a second flexographic impression cylinder 214, and a first inking device 212 being adapted to the second flexographic plate cylinder 215 to ink the second flexographic plate cylinder 215.
The optical lens molding unit 22 includes: the drying and curing device comprises a lens molding roller 221, a press roller 222, a first transfer roller 223, a second transfer roller 224, a third transfer roller 225 and a plurality of drying and curing units 23, wherein the press roller 222 and the drying and curing units 23 are distributed around the lens molding roller 221, and the press roller 222 is positioned at the upstream of the drying and curing units 23; the first transfer drum 223 is disposed downstream of the lens molding drum 221, and a drying and curing unit 23 is disposed therearound; the second transfer drum 224 is disposed downstream of the first transfer drum 223, and the third transfer drum 225 is disposed downstream of the second transfer drum 224.
The lens molding cylinder 221 is arranged at the downstream of the second flexographic plate cylinder 215, optical micro lens molding plates can be arranged on two molding surfaces of the lens molding cylinder 221, the press roller 222 and the drying and curing unit 23 are sequentially distributed around the lens molding cylinder 221 according to the transfer direction of the printing stock, the press roller 222 can be selectively selected or discarded, and under the condition that the press roller 222 is discarded, the lens molding cylinder 221 is only used as a transfer cylinder.
The first transfer cylinder 223 is downstream of the lens embossing cylinder 221, and the drying and curing units 23 are distributed around the first transfer cylinder 223 to dry/cure the pattern printed on the printing material by the flexo-and optical microlens embossing set 2.
The second transfer cylinder 224 performs the transfer of the substrate downstream of the first transfer cylinder 223 and upstream of the third transfer cylinder 225, the substrate being transferred by the third transfer cylinder 225 to the intaglio printing group 3.
The intaglio printing group 3 in this example comprises an impression cylinder 31, the impression cylinder 31 carrying a single substrate from the flexo and optical lens press group 2 through a printing nip formed between the impression cylinder 31 and a plate cylinder 32, the plate cylinder 32 carrying two engraved intaglio printing plates which are inked by an ink supply system and wiped by a plate wiping system 34. The proportional relationship between the number of impression surfaces of the impression cylinder 31 and the plate cylinder 32 is 3: 2, when the continuous paper feeding is performed, the two gravure plates on the plate cylinder 32 can print the gravure pattern having the engraved gravure feeling only on one side of the printing material. When the printing stock is conveyed to the gravure printing group 3 in an interval manner, the pattern of one printing plate on the printing plate cylinder 32 can be firstly transferred onto the printing surface of the impression cylinder 31 in the interval manner, and when another printing stock passes through the roller gap between the impression cylinder 31 and the printing plate cylinder 32, the engraved gravure pattern and the indirect gravure pattern can be respectively printed on the two surfaces of the printing stock.
In the example shown in fig. 1, the impression cylinder 31, the plate cylinder 32, the plate wiping system 34, the color collecting cylinder 331, the color mold cylinder 332, the fourth transfer cylinder 35, the fifth transfer cylinder 36 and the link cylinder 7 are firmly fixed in the second stationary frame 5.
The second ink supply device 333 and a color mold roller 332 are fixed in the movable frame 6, and the frame 6 can be moved closer or farther with respect to the second fixed frame 5; the 3 color mold cylinders 332 receive ink from respectively adapted second ink supplies 333. Color-collecting cylinder 331 transfers ink received from 3 color matrix cylinders 332 to the surface of the printing plate on plate cylinder 32. After the printing material has been printed from the gravure printing group 3, it is transferred to the delivery section by means of a transfer chain cylinder 7.
The process of example 1 is as follows:
the sheet feeder 1 conveys the printing stock to the sheet conveying plate 12 in a sheet separating way, the printing stock is conveyed to the sheet feeding roller 21 through the sheet conveying mechanism and then conveyed to the first flexible printing and impressing roller 211 (the first flexible printing and impressing roller 211 is a double-diameter roller with two impressing surfaces, and only one impressing surface is used under the condition of sheet separating and conveying), the first flexible printing and impressing roller 211 is provided with a gripper, and the printing stock is conveyed along with the first flexible printing and impressing roller 211; the first flexographic plate cylinder 213 receives ink from the adapted first ink supply 212 and prints a flexographic image on one side of the substrate. The drying and curing unit 23 irradiates the surface of the substrate to cure and dry the flexographic pattern.
The substrate is transferred to a second flexo impression cylinder 214, (the second flexo impression cylinder 214 is a double diameter cylinder with two impression surfaces, only one impression surface is used in the sheet fed condition), the second flexo impression cylinder 214 has grippers, and the substrate is transferred with the second flexo impression cylinder 214; the second flexographic plate cylinder 215 receives the optical microlens coating from the adapted first ink supply 212 and applies the optical microlens coating on the other side of the substrate.
The substrate is transferred to the lens mold cylinder 221, (the lens mold cylinder 221 is a double-diameter cylinder with two stamping surfaces, only one stamping surface is used under the condition of sheet separation and feeding), the lens mold cylinder 221 is provided with grippers, and the substrate is transferred along with the lens mold cylinder 221; an optical micro-lens mould pressing plate is arranged on one pressing surface of the lens mould pressing roller 221, a printing stock is attached to the surface of the optical micro-lens mould pressing plate under the rolling of the pressing roller 222, an optical micro-lens coating is extruded into the pattern of the optical micro-lens mould pressing plate, and the lens coating is cured, formed and adhered to the surface of the printing stock under the irradiation of the drying and curing unit 23 (the printing stock needs to be transparent according to the process requirement).
The printing stock is transferred to the first transfer roller 223, when the printing stock is jointed between the lens mould pressing roller 221 and the first transfer roller 223, the cured and formed microlens array is stripped from the mould pressing plate on the surface of the lens mould pressing roller 221, the printing stock is transferred to the first transfer roller 223, the drying and curing unit 23 carries out secondary curing on the cured and formed microlens array, and the curing of the microlens array is enabled to thoroughly guarantee the quality. The substrate that has completed one-side flexo printing and the other-side optical micro-lens printing passes to the gravure printing group 3 sequentially through the second transfer cylinder 224 and the third transfer cylinder 225.
The printing stock is transferred to the impression cylinder 31, because of the separated paper feeding, two printing plates are arranged on the printing plate cylinder 32, which are respectively called printing plate A and printing plate B, the plate A has gravure micro-patterns and gravure offset patterns, and the plate B has only gravure offset patterns, under the condition of separated paper feeding, the printing plate A on the printing plate cylinder 32 always prints the gravure micro-patterns and the gravure offset patterns on one side of the printing stock, and the printing plate B on the printing plate cylinder 32 transfers the patterns to the impression surface of the impression cylinder 31 at the gap of separated paper feeding, and then indirectly transfers the gravure offset patterns to the other side of the printing stock by rolling to complete the gravure offset printing. The gravure micro-image and text printed on one surface is matched with the optical micro-lens array on the other surface, and an amplified dynamic visual effect can be generated when the surface where the optical micro-lens array is located is observed.
The printing stock after the gravure butt printing passes through the fourth transfer roller 35, the fifth transfer roller 36 and the chain path roller 7 in sequence to transfer the printing stock to the paper receiving part.
Another process option for this example 1 is as follows:
the paper feeder 11 continuously conveys the printing stock to the paper feeding plate 12, the printing stock is transferred to the paper feeding roller 13 through a suitable paper transfer mechanism and then transferred to the first flexible printing and impressing roller 211 (the first flexible printing and impressing roller 211 is a double-diameter roller with two impressing surfaces, and the two impressing surfaces are used under the condition of continuous paper feeding), the first flexible printing and impressing roller 211 is provided with grippers, and the printing stock is transferred along with the first flexible printing and impressing roller 211; the first flexographic plate cylinder 213 receives ink from the adapted first ink supply 212 and prints a flexographic image on one side of the substrate. The drying and curing unit 23 irradiates the surface of the substrate to cure and dry the flexographic pattern.
The substrate is transferred to a second flexo impression cylinder 214, (the second flexo impression cylinder 214 is a double diameter cylinder with two impression surfaces, both used in a continuous feed condition), the second flexo impression cylinder 214 has grippers, the substrate is transferred with the second flexo impression cylinder 214; the second flexographic plate cylinder 215 receives the optical microlens coating from the adapted first ink supply 212 and applies the optical microlens coating on the other side of the substrate.
The substrate is transferred to the lens mold cylinder 221, (the lens mold cylinder 221 is a double-diameter cylinder with two impression surfaces, both impression surfaces are used in a continuous paper feeding condition), the lens mold cylinder 221 is provided with grippers, and the substrate is transferred along with the lens mold cylinder 221; the two stamping surfaces of the lens stamping roller 221 are provided with optical microlens stamping plates, a printing stock is attached to the surfaces of the optical microlens stamping plates under the rolling of the pressing roller 222, the optical microlens coating is extruded into the plate patterns of the optical microlens stamping plates, and the lens coating is cured, formed and adhered to the surfaces of the printing stock under the irradiation of the drying and curing unit 23 (the printing stock is transparent in process requirements).
The printing stock is transferred to the first transfer roller 223, when the printing stock is jointed between the lens mould pressing roller 221 and the first transfer roller 223, the cured and formed microlens array is stripped from the mould pressing plate on the surface of the lens mould pressing roller 221, the printing stock is transferred to the first transfer roller 223, the drying and curing unit 23 carries out secondary curing on the cured and formed microlens array, and the curing of the microlens array is enabled to thoroughly guarantee the quality.
The substrate that has completed one-side flexo printing and the other-side optical micro-lens printing passes to the gravure printing group 3 sequentially through the second transfer cylinder 224 and the third transfer cylinder 225.
The printing stock is transferred to the impression cylinder 31, because of continuous paper feeding, two printing plates are arranged on the printing plate cylinder 32, the two printing plates are completely the same, gravure micro-patterns and conventional gravure patterns are arranged in the plate patterns, and the printing plate on the printing plate cylinder 32 always prints the gravure micro-patterns and the gravure opposite printing patterns on one surface of the printing stock; the gravure micro-image and text printed on one surface is matched with the optical micro-lens array on the other surface, and an amplified dynamic visual effect can be generated when the surface where the optical micro-lens array is located is observed.
The printing material subjected to the single-sided gravure printing passes through the fourth transfer cylinder 35, the fifth transfer cylinder 36 and the chain path cylinder 7 in sequence to be transferred to the paper receiving section.
Example 2
Referring to fig. 2, a schematic side view of a combination printer configured to process continuously fed sheet substrates passing through the printer from a paper feeder positioned upstream of an associated print group to a paper take-up positioned downstream of the associated print group according to another illustrative embodiment of the invention.
The sheet substrate is fed continuously from the feeder 11 onto the feed plate 12 and then delivered by the feed mechanism to the feed cylinder into the flexo and optical microlens embossing group 2 and then into the gravure printing group 3.
The intaglio printing group 3 in example 2 comprises an impression cylinder 31, the impression cylinder 31 carrying the sheet substrates from the flexo and optical microlens embossing group 2 through a printing nip formed between the impression cylinder 31 and a plate cylinder 32, the plate cylinder 32 carrying two engraved intaglio plates which are inked by an ink inking system and wiped by a wiping system 34.
In the example shown in fig. 2, the impression cylinder 31, the plate cylinder 32, the plate wiping system 34, the color matrix cylinder 332 and the chain path cylinder 7 are firmly fixed in the second stationary frame 5.
An ink supply system in which a second ink supply device 333 is fixed in a movable frame 6, the movable frame 6 being movable closer to or farther from a second fixed frame 5; the impression cylinders 332 transfer the ink received from the respectively adapted second ink supply 333 to the plate surfaces mounted on the surface of the plate cylinder 32, respectively.
After the printing material has been printed from the gravure printing group 3, it is transferred to the delivery section by the chain rollers 7.
The process of example 2 is as follows:
the substrate that has completed one-side flexo printing and the other-side optical micro-lens printing passes to the gravure printing group 3 sequentially through the second transfer cylinder 224 and the third transfer cylinder 225.
The printing stock is transferred to the impression cylinder 31, under the condition of continuous paper feeding, three printing plates are arranged on the printing plate cylinder 32, the three printing plates are completely the same, gravure micro-patterns and conventional gravure patterns are arranged in the plate patterns, and the printing plates on the printing plate cylinder 32 always print the gravure micro-patterns and the gravure opposite printing patterns on one surface of the printing stock; the gravure micro-image and text printed on one surface is matched with the optical micro-lens array on the other surface, and an amplified dynamic visual effect can be generated when the surface where the optical micro-lens array is located is observed. The printing stock after the single-sided gravure printing is transferred to a paper receiving part through a chain channel roller 7.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A combined printing machine for the production of security documents for processing substrates in sheet form or in continuous web form, characterized by comprising a feed group (1), a flexo and optical lens-embossing group (2) and an intaglio printing group (3), said feed group (1) being arranged upstream of said flexo and optical lens-embossing group (2) and said intaglio printing group (3) being arranged downstream;
the flexo and optical lens mould pressing group (2) comprises a flexo unit (21), an optical lens mould pressing unit (22) and a plurality of drying and curing units (23), wherein the upstream of the optical lens mould pressing unit (22) is connected with the flexo unit (21), and the downstream of the optical lens mould pressing unit is connected with the drying and curing units (23);
the flexible printing unit (21) respectively prints the flexible printing ink pattern and the optical lens coating on two sides of a printing stock, and one side coated with the optical lens coating forms an optical lens coating;
the optical lens molding unit (22) molds and cures the optical lens coating to form an optical microlens array;
the plurality of drying and curing units (23) are used for curing and drying the flexographic ink pattern and the optical micro-lens array.
2. A combined printing machine for the production of security documents according to claim 1, characterized in that said feeding group (1) comprises: the flexible printing device comprises a paper feeder (11), a paper conveying plate (12) and a paper feeding roller (13), wherein one end of the paper conveying plate (12) is connected with the paper feeder (11), the other end of the paper conveying plate is connected with the paper feeding roller (13), and the paper feeding roller (13) is connected with the flexible printing unit (21).
3. A combined printing press for the production of security documents according to claim 1, wherein the flexographic unit (21) comprises a first flexographic impression cylinder (211), a first inking device (212) and a first flexographic plate cylinder (213), the first flexographic plate cylinder (213) and one of the dry curing units (23) being surrounded by the first flexographic impression cylinder (211), the first inking device (212) being arranged on one side of the first flexographic plate cylinder (213) to ink the first flexographic plate cylinder (213); -downstream of said first flexographic plate cylinder (213) there is provided one of said dry curing units (23);
the flexo unit (21) further comprises a second flexo impression cylinder (214) and a second flexo plate cylinder (215), the second flexo impression cylinder (214) and the second flexo plate cylinder (215) being matched; the second flexo impression cylinder (214) is arranged at the downstream of the first flexo impression cylinder (211), one side of the second flexo printing plate cylinder (214) is provided with the first ink supply device (212), and the first ink supply device (212) supplies ink to the second flexo printing plate cylinder (215).
4. A combined printing press for the production of security documents according to claim 3, characterised in that the first flexographic printing cylinder (211) and the second flexographic printing cylinder (214) are double-diameter cylinders with two stamping surfaces, and the first flexographic plate cylinder (213) and the second flexographic plate cylinder (215) are single-diameter cylinders.
5. A combined printing machine for the production of security documents according to claim 1, wherein said optical lens embossing unit (22) comprises: the drying and curing device comprises a lens molding roller (221), a pressing roller (222), a first transfer roller (223), a second transfer roller (224), a third transfer roller (225) and a plurality of drying and curing units (23), wherein the pressing roller (222) and the drying and curing units (23) are distributed around the lens molding roller (221), and the pressing roller (222) is located at the upstream of the drying and curing units (23);
the first transfer drum (223) is arranged downstream of the lens molding drum (221) and is surrounded by one of the dry curing units (23); the second transfer drum (224) is disposed downstream of the first transfer drum (223), and the third transfer drum (225) is disposed downstream of the second transfer drum (224).
6. A combined printing machine for the production of security documents according to claim 1, characterized in that said drying and curing unit (23) is a UV curing unit or a UV-L ED curing unit.
7. A combined printing machine for the production of security documents according to claim 1, characterized in that said intaglio printing group (3) comprises: the printing plate comprises an impression cylinder (31), a plate cylinder (32), an ink supply system and a plate wiping system (34), wherein the impression cylinder (31) is matched with the plate cylinder (32), and the plate wiping system (34) and the ink supply system are positioned around the periphery of the plate cylinder (32).
8. A combined printing machine for the production of security documents according to claim 7, characterised in that said ink supply system comprises: a color collecting cylinder (331), 3 color pattern cylinders (332) and a second ink supply device (333), wherein the color collecting cylinder (331) is matched with the plate cylinder (32), and ink collected by the 3 color pattern cylinders (332) from the second ink supply device (333) is transferred to the color collecting cylinder (331);
the intaglio printing group (3) further comprises: a fourth transfer cylinder (35) and a fifth transfer cylinder (36), the fourth transfer cylinder (35) being arranged downstream of the impression cylinder (31) and upstream of the fifth transfer cylinder (36).
9. A combined printing machine for the production of security documents according to claim 7, characterised in that said ink supply system comprises: four color matrix cylinders (332) and a second ink supply device (333), wherein the four color matrix cylinders (332) transfer the ink collected by the second ink supply device (333) to the plate cylinder (32).
10. A combined printing press for the production of security documents according to any one of claims 1 to 9, further comprising: a first fixed frame (4) for supporting the flexo and optical lens embossing group (2), a second fixed frame (5) and a mobile carriage (6) for supporting the gravure printing group (3), and a chain path cylinder (7) for transferring a post-printing substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810710458.4A CN108909155B (en) | 2018-07-02 | 2018-07-02 | Combined printing machine for producing safety documents |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810710458.4A CN108909155B (en) | 2018-07-02 | 2018-07-02 | Combined printing machine for producing safety documents |
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| Publication Number | Publication Date |
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| CN108909155A CN108909155A (en) | 2018-11-30 |
| CN108909155B true CN108909155B (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810710458.4A Active CN108909155B (en) | 2018-07-02 | 2018-07-02 | Combined printing machine for producing safety documents |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115107345B (en) * | 2021-03-23 | 2023-10-20 | 南京造币有限公司 | Modular combined double-sided anti-counterfeiting shading printing machine |
| CN114261198B (en) * | 2021-12-02 | 2024-04-16 | 杭州新耀激光科技有限公司 | Micro-nano optical printer and printing method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPO289296A0 (en) * | 1996-10-10 | 1996-10-31 | Securency Pty Ltd | Self-verifying security documents |
| FR2894514B1 (en) * | 2005-12-08 | 2008-02-15 | Essilor Int | METHOD OF TRANSFERRING A MICRONIC PATTERN TO AN OPTICAL ARTICLE AND OPTICAL ARTICLE THUS OBTAINED |
| CN101130310A (en) * | 2006-08-21 | 2008-02-27 | 上海市黄浦区家友电脑研究所 | Numerical printing equipment and method of printing thereof |
| DE102010048772A1 (en) * | 2010-10-13 | 2012-04-19 | Bundesdruckerei Gmbh | A method of producing a security document having a viewing angle dependent security feature and security document |
| CN103342060B (en) * | 2013-06-18 | 2016-01-20 | 坤达国际有限公司 | A kind of Three-dimensional printed matter and stereoscopic picture printing technique |
| DE112016002165T5 (en) * | 2015-06-10 | 2018-02-15 | Ccl Secure Pty Ltd | Optical device with a hidden picture |
| CN205386982U (en) * | 2016-01-27 | 2016-07-20 | 毛大智 | Integrated lithography apparatus of mould pressing cat eye and printed patterns combination |
| KR101692066B1 (en) * | 2016-06-03 | 2017-01-04 | 한국기계연구원 | Three-dimensional pattern printing device |
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Address after: No. 919, Tianyin Avenue, Jiangning District, Nanjing City, Jiangsu Province, 210000 Patentee after: NANJING BANKNOTE MINTING Co.,Ltd. Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: No. 919, Tianyin Avenue, Jiangning District, Nanjing City, Jiangsu Province, 210000 Patentee before: NANJING BANKNOTE MINTING Co.,Ltd. Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |