CN112140746B - Preparation system of safety pattern - Google Patents

Preparation system of safety pattern Download PDF

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Publication number
CN112140746B
CN112140746B CN202010975990.6A CN202010975990A CN112140746B CN 112140746 B CN112140746 B CN 112140746B CN 202010975990 A CN202010975990 A CN 202010975990A CN 112140746 B CN112140746 B CN 112140746B
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magnetic field
pattern
curing
printing substrate
magnetic
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CN112140746A (en
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任磊
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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
    • B41F11/02—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 for securities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • 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
    • B41F19/002—Apparatus or machines for carrying out printing operations combined with other operations with means for applying specific material other than ink
    • B41F19/005—Apparatus or machines for carrying out printing operations combined with other operations with means for applying specific material other than ink with means for applying metallic, conductive or chargeable material
    • 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
    • B41F19/007—Apparatus or machines for carrying out printing operations combined with other operations with selective printing mechanisms, e.g. ink-jet or thermal printers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • 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
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B41F23/045—Drying sheets, e.g. between two printing stations by radiation
    • B41F23/0453—Drying sheets, e.g. between two printing stations by radiation by ultraviolet dryers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/16—Programming systems for automatic control of sequence of operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/369—Magnetised or magnetisable materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

The invention discloses a system for preparing a security pattern, which comprises: the surface of the printing substrate is printed with an inducible ink pattern, and at least one static continuous magnetic field and a first curing light field are arranged along the printing paper feeding direction; the printing substrate is transported sequentially past the at least one static continuous magnetic field and the first curing light field; the at least one static continuous magnetic field is used for inducing the inducible ink pattern of the printing substrate to form a first safety pattern, wherein the magnetic field distribution of the at least one static continuous magnetic field in the printing paper feeding direction is consistent; the first curing lightfield is used to cure the first security pattern formed on the printing substrate.

Description

Preparation system of safety pattern
Technical Field
The invention relates to the technical field of anti-counterfeiting printing, in particular to a preparation system of a safety pattern.
Background
The magnetic optically variable anti-counterfeiting pattern jointly developed by VIAVI company and Sicpa company, VIAVI company has registered a large number of patents for the application technology of magnetic optically variable ink, and most importantly, the 2004 application 200480018382.5 method and device for generating patterns in a coating containing magnetic particles by magnetic field induction, which is supposed to be applied to the anti-counterfeiting of various banknotes worldwide; it is worth mentioning that the core technical elements of the security printed patterns formed by the company VIAVI and the company Sicpa are the printed patterns and the magnetic plate patterns.
The object of the present invention is to find a continuous magnetic field formed security pattern printing scheme and apparatus.
Disclosure of Invention
In view of the above problems, the present invention provides a system for preparing a security pattern, which can effectively complete the induction of pigment in the pattern of the ink to form the desired security pattern no matter how fast the substrate is driven.
According to an embodiment of the present invention, there is provided a system for preparing a security pattern, including: the surface of the printing substrate is printed with an inducible ink pattern, and at least one static continuous magnetic field and a first curing light field are arranged along the printing paper feeding direction;
the printing substrate is transported sequentially past the at least one static continuous magnetic field and the first curing light field;
the at least one static continuous magnetic field is used for inducing the inducible ink pattern of the printing substrate to form a first safety pattern, wherein the magnetic field distribution of the at least one static continuous magnetic field in the printing paper feeding direction is consistent;
the first curing lightfield is used to cure the first security pattern formed on the printing substrate.
Optionally, each static continuous magnetic field comprises one or a group of bar magnets in the same direction; or
Each static continuous magnetic field comprises one or a group of magnetic rings which are opposite to each other in the same direction, the at least one static continuous magnetic field is embedded in at least one roller for conveying the printing substrate, and the printing substrate is conveyed around the at least one roller.
Wherein, each group of ring magnets can be complete ring magnets or a magnet obtained by combining a part of a plurality of ring magnets.
Optionally, the system further includes:
a patterned magnetic field positioned between the at least one static continuous magnetic field and the printing substrate and synchronized to the printing substrate to form a relatively static synchronous magnetic field;
the inducible ink pattern of the printing substrate is induced to form a second security pattern through a composite magnetic field formed by the at least one static continuous magnetic field and the pattern magnetic field;
the first curing lightfield is also used to cure the second security pattern formed on the printing substrate.
Optionally, when the number of the static continuous magnetic fields is multiple, the multiple static continuous magnetic fields are arranged in parallel and at intervals.
Optionally, when the static continuous magnetic field includes a magnetic ring, the system further includes:
and the bearing device is arranged at the interval position of any two adjacent magnetic rings.
Optionally, the magnetic ring is a complete magnetic ring, or a ring shape is formed by a plurality of magnets arranged at intervals, wherein the magnetic field of each magnet is consistent in the paper feeding direction.
Optionally, when two rollers for conveying the printing substrate are embedded with a plurality of static continuous magnetic fields, and each static continuous magnetic field includes one or a group of magnetic rings in the same direction, the plurality of magnetic rings in each roller are arranged in parallel and at intervals, each magnetic ring is surrounded by a plurality of magnets arranged at intervals to form a ring, a bearing device is arranged at an interval between any two adjacent magnetic rings, the magnetic field distribution directions of the two rollers are different, or the magnetic field distributions of the two rollers have an angle difference.
Optionally, the system further includes:
a second curing lightfield, the first curing lightfield and the second curing lightfield respectively curing the security pattern on the printed substrate after passing through the two rollers, wherein the printed substrate sequentially passes through the second curing lightfield and the first curing lightfield.
Optionally, the second curing light field includes a parallel light source and a fixed light fence, and the parallel light source is disposed above the fixed light fence.
Optionally, the second curing light field includes a parallel light source and a variable pattern diaphragm, and the variable pattern diaphragm is implemented by inkjet, thermal transfer or printing.
In the embodiment of the invention, the printing substrate is induced by the static continuous magnetic field, so that no matter how fast the substrate is driven, the pigment in the pattern of the ink can be effectively induced by increasing the continuous range of the static continuous magnetic field to form the required pattern. Under the condition of using the scheme, the printing substrate and the printed pattern cut the magnetic field to move, and in the moving mode, the pigment in the ink paint is dragged by the magnetic force of the magnetic field while being induced, and under the action of tangential dragging, the pressure on two sides of the pigment in the ink paint is balanced easily, so that the formed arrangement effect is easier to form a mirror surface arrangement effect.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1A is a schematic view of a system for preparing a security device according to one embodiment of the present invention.
FIG. 1B is a schematic illustration of a static continuous magnetic field according to an embodiment of the present invention.
FIG. 1C is a schematic illustration of another static continuous magnetic field according to an embodiment of the present invention.
FIG. 1D is a graph showing the effect of alignment of pigments in an ink coating according to the related art.
FIG. 1E is a graph illustrating the effect of pigment alignment in an ink coating, in accordance with one embodiment of the present invention.
FIG. 2A is a schematic front view of another static continuous magnetic field according to an embodiment of the present invention.
FIG. 2B is a side view of another static continuous magnetic field in accordance with an embodiment of the present invention.
FIG. 2C is a side view of an embodiment of the present invention having a static continuous magnetic field.
FIG. 3 is a schematic view of another system for preparing a security device according to one embodiment of the present invention.
FIG. 4A is a schematic front view of another static continuous magnetic field according to an embodiment of the present invention.
FIG. 4B is a schematic side view of another static continuous magnetic field according to an embodiment of the present invention.
FIG. 5A is a schematic front view of another static continuous magnetic field according to an embodiment of the present invention.
FIG. 5B is a schematic side view of another static continuous magnetic field according to an embodiment of the present invention.
FIG. 6A is a schematic front view of another static continuous magnetic field according to an embodiment of the present invention.
FIG. 6B is a schematic side view of another static continuous magnetic field according to an embodiment of the present invention.
FIG. 7A is a schematic front view of another static continuous magnetic field according to an embodiment of the present invention.
FIG. 7B is a schematic side view of another static continuous magnetic field according to an embodiment of the present invention.
FIG. 8 is a schematic view of a system for preparing yet another security device in accordance with an embodiment of the present invention.
FIG. 9 is a schematic view of a system for preparing a further security device in accordance with an embodiment of the present invention.
FIG. 10 is a schematic view of a system for preparing yet another security device in accordance with an embodiment of the present invention.
FIG. 11 is a schematic view of a system for preparing yet another security device in accordance with an embodiment of the present invention.
FIG. 12 is a schematic view of a system for preparing a further security device in accordance with an embodiment of the present invention.
FIG. 13 is a schematic view of a system for preparing yet another security device in accordance with an embodiment of the present invention.
FIG. 14 is a schematic view of a system for preparing yet another security device in accordance with an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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.
In some of the flows described in the present specification and claims and in the above figures, a number of operations are included that occur in a particular order, but it should be clearly understood that these operations may be performed out of order or in parallel as they occur herein, with the order of the operations being indicated as 101, 102, etc. merely to distinguish between the various operations, and the order of the operations by themselves does not represent any order of performance. Additionally, the flows may include more or fewer operations, and the operations may be performed sequentially or in parallel. It should be noted that, the descriptions of "first", "second", etc. in this document are used for distinguishing different messages, devices, modules, etc., and do not represent a sequential order, nor limit the types of "first" and "second" to be different.
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.
Example one
The present invention provides a system for preparing a security pattern, as shown in fig. 1A, comprising:
a printing substrate 1 with an inducible ink pattern printed on the surface, and at least one static continuous magnetic field 2 and a first curing light field 3 arranged along the printing paper feeding direction;
the printing substrate is transported sequentially through the at least one static continuous magnetic field 2 and the first curing light field 3;
the at least one static continuous magnetic field 2 is used for inducing the inducible ink pattern of the printing substrate 1 to form a first security pattern, wherein the magnetic field distribution of the at least one static continuous magnetic field 2 in the printing paper feeding direction is uniform;
the first curing lightfield 3 is used to cure the first security pattern formed on the printing substrate 1.
In this embodiment, as shown in fig. 1B and 1C, the printing paper feeding direction has one or more static continuous magnetic fields, and in the case of a plurality of static continuous magnetic fields, the magnetic fields are necessarily in a parallel relationship. As shown in fig. 1B, one magnetic stripe may form a static magnetic field, and as shown in fig. 1C, two magnetic stripes may form a static magnetic field. The printing substrate printed with the inducible ink pattern passes through a static continuous magnetic field according to a design range under the drive of the substrate conveying mechanism, and the arrangement of pigments in the inducible ink pattern in the magnetic field is consistent as the magnetic field distribution in the paper feeding direction is the same; the advantages of using such a static continuous magnetic field are: theoretically, an infinite continuous magnetic field is possible, so that no matter how fast the substrate is driven, inducing the pigment in the ink pattern can be effectively accomplished by increasing the continuous range of the continuous magnetic field to form the desired pattern.
As shown in fig. 1D, in the prior art, the pigment flakes in the ink coating are directly induced by the original solution, and the pigment flakes must align according to the effect of the magnetic field, so that the resistance of the ink flowing must be offset, and even when the desired position is reached, the pressure on both sides of the pigment is still hard to balance, and it is difficult to realize a continuous curved mirror surface.
As shown in fig. 1E, when the scheme is used, the printing substrate and the printed pattern cut the magnetic field to move, and in this way, the pigment in the ink paint is dragged by the magnetic force of the magnetic field while being induced, and under the action of the tangential dragging, the pressures on the two sides of the pigment in the ink paint are balanced, so that the formed arrangement effect is easier to form the mirror arrangement effect.
Example two
As shown in fig. 1B, 1C, 2A, 2B and 2C, optionally, each static continuous magnetic field 2 comprises one bar magnet or a group of bar magnets in the same direction; or each comprising one or a group of magnetic rings 21 with opposite co-orientation, at least one static continuous magnetic field being embedded inside at least one roller conveying the printing substrate 1, around which roller the printing substrate is conveyed.
In this embodiment, as shown in fig. 1A, the static continuous magnetic field may be prepared as one or more magnetic stripes, and certainly, one or more groups of magnetic rings in the same direction may also be prepared, and the magnetic rings are embedded in the roller to form the roller of the static continuous magnetic field, because the substrate printed with the inducible ink moves around the roller during the pattern preparation process, and the magnetic field distribution of the magnetic roller is uniform in the circumferential direction, the linear velocity outside the magnetic roller does not need to be synchronous with that of the substrate printed with the inducible ink, that is, the two substrates have different linear velocities, in this case, the printed substrate and the printed pattern cut the magnetic field motion, in this motion mode, the pigment in the ink paint is dragged by the magnetic force of the magnetic field while being induced, and under the tangential dragging, the pressures on both sides of the pigment in the ink paint are balanced easily, therefore, the alignment effect is formed to more easily form the mirror alignment effect.
EXAMPLE III
As shown in fig. 3, optionally, the system further includes:
a patterned magnetic field 5, which is located between the at least one static continuous magnetic field 2 and the printing substrate 1 and which, in synchronism with the printing substrate 1, forms a relative static synchronous magnetic field; wherein the pattern magnetic field is a flexible pattern magnetic field.
The inducible ink pattern of the printing substrate 1 is induced to form a second security pattern by passing through a composite magnetic field formed by the at least one static continuous magnetic field 2 and the pattern magnetic field 5;
the first curing lightfield 3 is also used to cure the second security pattern formed on the printed substrate.
This embodiment can be implemented on the basis of the first embodiment, in particular, by embedding a patterned magnetic field 5 on a flexible conveyor belt, which is located between the static continuous magnetic field 2 and the printing substrate 1 on which the inducible ink is printed; during the preparation of the security pattern, a relatively static synchronizing magnetic field is formed synchronously with the substrate on which the inducible ink is printed. The printing substrate 1 printed with the inducible ink pattern passes through a static continuous magnetic field according to a design range under the driving of a substrate conveying mechanism, and the arrangement of pigments in the inducible ink pattern in the magnetic field is consistent because the magnetic field distribution in the paper feeding direction is the same. And simultaneously, a synchronous pattern magnetic field is arranged at the lower part of the substrate printed with the pattern capable of inducing the printing ink and the upper part of the relative static synchronous magnetic field, and the pattern of the pattern magnetic field transfers the pattern magnetic field to the printed substrate in a magnetic induction mode to form a safety pattern under the combined action of the relative static synchronous magnetic field and the static synchronous magnetic field.
Specifically, the printing substrate and the printed pattern are moved by a cutting magnetic field, and in the moving mode, the pigment in the ink paint is dragged by magnetic force of the magnetic field while being induced, and under the action of tangential dragging, the pressure on two sides of the pigment in the ink paint is balanced easily, so that the formed arrangement effect is easier to form a mirror arrangement effect.
Example four
The above-mentioned scheme of the pattern magnetic field can also be implemented on the basis of the second embodiment, as shown in fig. 4A and 4B, the static continuous magnetic field 2 is prepared into at least one or at least one set of magnetic rings 21 in the same direction, wherein the magnetic rings are one complete magnetic ring and are embedded in the roller to form the roller of the static continuous magnetic field, because the printing substrate 1 printed with the inducible ink moves around the roller during the pattern preparation process, and the magnetic roller has the same magnetic field distribution in the circumferential direction, the linear velocity outside the magnetic roller does not need to be synchronous with the linear velocity of the substrate printed with the inducible ink, i.e. the two substrates have different linear velocities, in this case, the printing substrate and the printed pattern cut the magnetic field move, in this way, the pigment existing in the ink paint is dragged by the magnetic force of the magnetic field while being induced, and under the tangential dragging action, the pressure on both sides of the pigment in the ink coating can be easily balanced, so that the formed arrangement effect can be more easily formed into a mirror arrangement effect. And simultaneously, a synchronous pattern magnetic field is arranged at the lower part of the printing substrate printed with the inducible ink pattern and the upper part of the relative static synchronous magnetic field, and the pattern of the pattern magnetic field transfers the pattern magnetic field to the pattern capable of inducing the ink in a magnetic induction mode to form a safety pattern under the combined action of the relative static synchronous magnetic field and the static synchronous magnetic field.
EXAMPLE five
As shown in fig. 5A and 5B, optionally, when the magnetic ring 21 is multiple, multiple magnetic rings 21 are arranged in parallel and at intervals. Each magnetic ring is surrounded by a plurality of magnets arranged at intervals to form a ring shape, wherein the magnetic field of each magnet is consistent in the paper feeding direction.
In this embodiment, the rollers are mounted with magnetic fields parallel and spaced apart and the individual magnetic fields are uniform in their extent in the direction of travel, and on the outside of the conformable roller there is a flexible belt synchronized with the printing substrate, the surface of which is arranged in an array pattern; after the printing substrate printed with the inducible ink pattern enters the composite magnetic field, the magnetic field distribution on the surface of the flexible conveyor belt induces the inducible ink pattern on the printing substrate at the same linear speed as the flexible conveyor belt. The magnetic field is installed in the roller in parallel and at intervals and the synchronous flexible transmission belt has relative movement, and the linear velocity of the surface of the roller is greater than that of the synchronous flexible transmission belt; the relative movement of the rollers realizes the dragging of the pigment in the induced ink patterns on the induced printing substrate, so as to achieve better surface arrangement; because the magnetic field in the roller drags the pigment in the induced ink pattern on the induced print substrate, the induced ink pattern on the print substrate cannot exceed the range of the relative static magnetic field during the entire process.
EXAMPLE six
As shown in fig. 6A and 6B, optionally, the system further includes:
at least one bearing device 6, wherein one bearing device 6 is arranged at the interval position of any two adjacent magnetic rings, the magnetic rings are complete magnetic rings, and the outer diameter of the bearing device is larger than that of the magnetic rings. When the magnetic ring is a complete magnetic ring, the rotational linear speed of the bearing arrangement need not be controlled.
In this embodiment, the relatively static magnetic fields are mounted in parallel within the roller, and isolating the relatively parallel magnetic fields is by use of a bearing-like arrangement. A flexible transmission belt which is synchronous with the printing substrate is arranged outside the laminating roller, and the surface of the flexible transmission belt is provided with patterns in an array mode; the presence of the bearings allows the synchronous flexible belt to directly contact similar bearing means mounted on the surface of the roll, without directly contacting the magnets; such a design makes it easier for the synchronized flexible drive belt and magnets to make relative motion; after the printing substrate printed with the inducible ink pattern enters the composite magnetic field, the flexible conveying belt has the same linear velocity as the flexible conveying belt, and the magnetic field distribution on the surface of the flexible conveying belt induces the inducible ink pattern on the printing substrate; the magnetic field and the synchronous flexible transmission belt are arranged in the roller in parallel and at intervals and have relative movement, and the linear velocity of the surface of the roller is greater than that of the synchronous flexible transmission belt; the relative movement of the rollers realizes the dragging of the pigment in the induced ink pattern on the induced printing substrate, so as to achieve better surface arrangement.
EXAMPLE seven
As shown in fig. 7A and 7B, optionally, the system further includes:
and at least one bearing device 6, wherein one bearing device 6 is arranged at the interval position of any two adjacent magnetic rings, the magnetic rings are surrounded into a ring shape by a plurality of magnets arranged at intervals, and the magnetic field of each magnet is consistent in the paper feeding direction. When the magnetic ring is formed by splicing a plurality of magnets discontinuously, the linear speed of the bearing device is controllable, so that the rotating speed of the magnetic ring and the rotating speed of the bearing device form a controllable relative speed, and the pigment in the printing ink is effectively dragged.
In this embodiment, the magnetic fields are mounted parallel and spaced apart within the roller and the individual fields are uniform in the direction of travel within their range, the magnetic fields are mounted parallel and spaced apart within the roller, and the magnetic fields are mounted spaced apart using a bearing-like arrangement. A flexible transmission belt which is synchronous with the printing substrate is arranged outside the laminating roller, and the surface of the flexible transmission belt is arrayed with patterns; after the printing substrate printed with the inducible ink pattern enters the composite magnetic field, the flexible conveying belt has the same linear velocity as the flexible conveying belt, and the magnetic field distribution on the surface of the flexible conveying belt induces the inducible ink pattern on the printing substrate; the magnetic field and the synchronous flexible transmission belt which are arranged in the roller in parallel at intervals move relatively, and the linear velocity of the surface of the roller is greater than that of the synchronous flexible transmission belt; the relative movement of the rollers realizes the dragging of the pigment in the induced ink pattern on the induced printing substrate, so as to achieve better surface arrangement. Because the magnetic field in the roller is to drag the pigment in the induced ink pattern on the induced printing substrate, the induced ink pattern on the printing substrate cannot exceed the range of the relative static magnetic field in the whole process.
Example eight
As shown in fig. 8 and 9, optionally, when a plurality of static continuous magnetic fields are embedded in each of two rollers for conveying the printing substrate, and each static continuous magnetic field includes one or a group of magnetic rings in opposite directions, the plurality of magnetic rings in each roller are arranged in parallel and at intervals, each magnetic ring is surrounded by a plurality of magnets arranged at intervals to form a ring, a bearing device 6 is arranged at an interval position between any two adjacent magnetic rings, the magnetic field distribution directions of the two rollers are different, or the magnetic field distributions of the two rollers have an angle difference.
Optionally, the system further includes:
a second curing lightfield 8, said first curing lightfield 3 and said second curing lightfield 8 curing the security pattern on the printing substrate 1 after passing two rollers, respectively, wherein the printing substrate passes said second curing lightfield 8 and said first curing lightfield 3 in sequence.
Optionally, the second curing light field 8 comprises a parallel light source 81 and a fixed light barrier 82, and the parallel light source 81 is disposed above the fixed light barrier 82. As shown in fig. 8 and 9, the second curing light field 8 can be placed at different positions.
In this embodiment, after the printing substrate with the inducible ink pattern enters the first roller to compound the magnetic field, the magnetic field distribution on the surface of the flexible conveyor belt induces the inducible ink pattern on the printing substrate, at the same linear velocity as the flexible conveyor belt; because the shielding and curing light is arranged on the side surface; the pattern part is cured; the shading is consistent in the paper feeding direction; after the printing base material printed with the inducible ink patterns enters the second roller composite magnetic field, the flexible conveying belt has the same linear speed, and the magnetic field distribution on the surface of the flexible conveying belt induces the inducible ink patterns on the printing base material; under the action of curing light; the pattern is completely cured.
Example nine
This example is similar to example eight except that the second curing light field is different. In this embodiment, as shown in fig. 10, the second curing light field 10 includes a collimated light source 101 and a variable pattern diaphragm 102, and the variable pattern diaphragm 102 is implemented by inkjet, thermal transfer, or printing.
In this embodiment, after the printing substrate with the inducible ink pattern enters the first roller to compound the magnetic field, the magnetic field distribution on the surface of the flexible conveyor belt induces the inducible ink pattern on the printing substrate, at the same linear velocity as the flexible conveyor belt; the side surface is provided with a fixed pattern diaphragm prepared in advance or a changeable diaphragm prepared by digital printing or code spraying printing; under the combined action of the diaphragm and the curing light, the partial curing of the ink pattern can be induced; after the printing substrate printed with the inducible ink pattern enters the second roller to form a composite magnetic field, the flexible conveyor belt has the same linear velocity as the flexible conveyor belt, and the magnetic field distribution on the surface of the flexible conveyor belt induces the inducible ink pattern on the printing substrate; under the action of curing light; the pattern is completely cured.
EXAMPLE ten
As shown in fig. 11, this embodiment is similar to embodiment eight except that two rollers use different flexible conveyor belts, i.e., different flexible conveying pattern magnetic fields.
In this embodiment, after the printing substrate with the inducible ink pattern enters the first roller composite magnetic field, the magnetic field distribution on the surface of the first flexible conveyor belt induces the inducible ink pattern on the printing substrate at the same linear velocity as the first flexible conveyor belt; because the shielding and curing light is arranged on the side surface; the pattern part is solidified; the shading is consistent in the paper feeding direction; after the printing substrate printed with the inducible ink pattern enters the second roller to form a composite magnetic field, the second flexible conveyer belt has the same linear velocity as the second flexible conveyer belt, and the magnetic field distribution on the surface of the second flexible conveyer belt induces the inducible ink pattern on the printing substrate; under the action of curing light; the pattern is completely cured.
EXAMPLE eleven
As shown in fig. 12, this embodiment is similar to embodiment nine except that two rollers use different flexible conveyor belts, i.e., different flexible conveyor pattern magnetic fields.
In this embodiment, after the printing substrate with the inducible ink pattern enters the first roller composite magnetic field, the magnetic field profile on the surface of the first flexible conveyor belt will induce the inducible ink pattern on the printing substrate at the same linear velocity as the first flexible conveyor belt; the side surface is provided with a fixed pattern diaphragm prepared in advance or a changeable diaphragm prepared by digital printing or code spraying printing; under the combined action of the diaphragm and the curing light, partial curing of the ink pattern can be induced; after the printing substrate printed with the inducible ink pattern enters the second roller to form a composite magnetic field, the second flexible conveyer belt has the same linear velocity as the second flexible conveyer belt, and the magnetic field distribution on the surface of the second flexible conveyer belt induces the inducible ink pattern on the printing substrate; under the action of curing light; the pattern is completely cured.
Example twelve
As shown in fig. 13, the second curing light field 13 can also use a smooth roller 131 and a light shielding body 132 with linear slits, the smooth roller is a roller whose surface can emit light and whose surface has a curing light pattern, and the linear speed of the transmission line of the smooth roller surface is the same as or proportional to the linear speed of the transmission line of the substrate printed with ink during operation, so as to ensure that the light pattern on the smooth roller surface is transferred to the surface printed with ink in a one-to-one ratio or in a ratio of linear speeds. The position of the light shielding body is positioned between the smooth roller and the base material printed with the printing ink to form a linear slit, so that stray light is shielded, the two-dimensional pattern on the surface of the smooth roller is guaranteed to be transferred in a one-dimensional linear mode, and the interference of light outside a slit area is reduced. After the base material printed with the ink is transmitted to the magnetic roller above, the ink on the base material is induced by the magnet on the magnetic roller, is directionally arranged, enters the slit area of the smooth roller, the light pattern on the smooth roller enters the surface of the ink through the slit, partially solidifies the ink pattern, after the base material printed with the ink is transmitted to the magnetic roller below, the uncured part is induced, the arrangement sequence is changed, and then the whole body is solidified after the base material enters the solidified light field.
EXAMPLE thirteen
As shown in fig. 14, the second curing light field 14 can also be a light field composed of an array light source 141 and a light source control system 142, the array light source is a multi-point array, each point outputs or does not output curing light according to background control during operation, so that a light pattern is formed, and the light pattern is controlled to be variable. After the base material printed with the printing ink is transmitted to the magnetic roller above, the printing ink on the base material is induced by the magnet on the magnetic roller, directionally arranged and enters the lower part of the array curing light source, and the control system controls part of the light source to be turned on and then to be incident on the surface of the printing ink to partially cure the printing ink patterns. After the base material printed with the ink is transmitted to a magnetic roller below, uncured parts are induced, the arrangement sequence is changed, and the whole body is cured after the uncured parts enter a curing light field.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (8)

1. A system for preparing a security device, comprising: the surface of the printing substrate is printed with an inducible ink pattern, and at least one static continuous magnetic field and a first curing light field are arranged along the printing paper feeding direction;
the printing substrate is transported sequentially past the at least one static continuous magnetic field and the first curing light field;
the at least one static continuous magnetic field is used for inducing the inducible ink pattern of the printing substrate to form a first safety pattern, wherein the magnetic field distribution of the at least one static continuous magnetic field in the printing paper feeding direction is consistent;
the first curing lightfield is used to cure the first security pattern formed on the printing substrate;
each static continuous magnetic field comprises one or a group of bar magnets in the same direction; or
Each static continuous magnetic field comprises one or a group of magnetic rings in opposite same direction;
when a plurality of static continuous magnetic fields are embedded in the two rollers for conveying the printing substrate, each static continuous magnetic field comprises one or a group of magnetic rings which are opposite to each other in the same direction, the magnetic rings in each roller are arranged in parallel at intervals, each magnetic ring is surrounded into a ring by a plurality of magnets arranged at intervals, a bearing device is arranged at the interval position of any two adjacent magnetic rings, the magnetic field distribution directions of the two rollers are different, or the magnetic field distribution of the two rollers has an angle difference.
2. The system of claim 1, further comprising:
a patterned magnetic field positioned between the at least one static continuous magnetic field and the printing substrate and synchronized to the printing substrate to form a relatively static synchronous magnetic field;
the inducible ink pattern of the printing substrate is induced to form a second security pattern through a composite magnetic field formed by the at least one static continuous magnetic field and the pattern magnetic field;
the first curing lightfield is also used to cure the second security pattern formed on the printing substrate.
3. The system of claim 2, wherein when the plurality of static continuous magnetic fields are provided, the plurality of static continuous magnetic fields are provided in parallel and spaced apart.
4. The system of claim 3, wherein when the static continuous magnetic field comprises a magnetic loop, the system further comprises:
and the bearing device is arranged at the interval position of any two adjacent magnetic rings.
5. A system as claimed in claim 3 or 4, wherein the magnetic ring is a complete magnetic ring or is formed as a ring from a plurality of spaced magnets, wherein the magnetic field of each magnet is relatively uniform in the direction of travel of the paper.
6. The system of claim 1, further comprising:
a second curing lightfield, the first curing lightfield and the second curing lightfield curing the security pattern on the printed substrate after passing over the two rollers, respectively, wherein the printed substrate passes sequentially through the second curing lightfield and the first curing lightfield.
7. The system of claim 6, wherein the second curing light field comprises a collimated light source and a fixed light stop, the collimated light source disposed above the fixed light stop.
8. The system of claim 6, wherein the second curing light field comprises a collimated light source and a variable pattern diaphragm, the variable pattern diaphragm implemented using inkjet, thermal transfer, or printing.
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