CN111391513A - Tracing anti-counterfeiting printing identification method - Google Patents
Tracing anti-counterfeiting printing identification method Download PDFInfo
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- CN111391513A CN111391513A CN202010162444.0A CN202010162444A CN111391513A CN 111391513 A CN111391513 A CN 111391513A CN 202010162444 A CN202010162444 A CN 202010162444A CN 111391513 A CN111391513 A CN 111391513A
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- printing
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- paster
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- 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
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/21—Ink jet for multi-colour printing
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- 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
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/36—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for portability, i.e. hand-held printers or laptop printers
-
- 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
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
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- 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
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/44—Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions
- B41J3/445—Printers integrated in other types of apparatus, e.g. printers integrated in cameras
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ink Jet (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Record Information Processing For Printing (AREA)
Abstract
The patent discloses a tracing anti-counterfeiting printing identification method, which comprises the following steps: firstly, a server generates an individualized two-dimensional code original manuscript digital image corresponding to a current printing stock; secondly, pasting a paster with a window at the top end of the ink jet printing equipment with the surface of a printing stock, and shooting a bent paster image through a camera at the top end of the ink jet printing equipment; comparing the bent paster image with a paster flat image to generate a mapping relation between the bent paster image and the paster flat image; and fourthly, adjusting the digital original image into a bent digital image through the mapping relation, and driving an ink jet head at the top end of the ink jet printing equipment to jet print the personalized two-dimensional code corresponding to the current printing stock to the printing stock according to the bent digital image. By the method, the scanning performance of the two-dimensional code on the surface of the article and the human eye vision anti-counterfeiting performance are improved.
Description
Technical Field
The patent belongs to the technical field of printing, and particularly relates to an ink jet printing method. In particular to a tracing anti-counterfeiting printing identification method on curved food.
Background
Identification of the source of an article in the prior art has become more and more widely used, for example, common organic food products, including but not limited to walking chickens and the like, on which it is feasible to mark the source by applying a two-dimensional code label.
In the prior art, the use of the two-dimensional code can acquire corresponding article information by scanning the code, and the two-dimensional code is widely known by the public, but the mark of the two-dimensional code is easy to forge, and if articles from other different sources are marked into the same two-dimensional code, a user cannot distinguish which type of commodity is correct after scanning. Therefore, the printing of variable information becomes a preferred mode, namely, the data corresponding to each bar code after being scanned are different, and the problem can be solved to a greater extent.
In particular, it is an effective way to solve the problem of two-dimensional code identification by printing variable information for products, such as fruits, which are usually purchased in a single purchase. After the code is scanned, the corresponding webpage information can display the personalized information of the commodity, and each commodity is different, so that the two-dimensional code can be effectively prevented from being forged.
The printing of two-dimensional code scanning is mature in the prior art, but the food surface is usually realized by adopting a label printing mode, which can meet most requirements, but the capability of modifying data is not strong for variable information printing, and the anti-counterfeiting effect of labeling the food surface is not ideal because the labels can be manufactured in batch. In the prior art, the water transfer printing is also realized, but the transfer printing has great difficulty for variable information, and the process conditions are complex and difficult to operate conveniently. The ideal mode is to adopt the ink jet printing mode, the ink jet printing has no fixed printing plate, the data is convenient to modify, but the ink jet printing mode has the defects that the spray head and the surface of the printing stock are not in direct contact, when the surface of the printing stock is bent or irregular in shape, the ink jet printing mode generates great deformation to the pattern, thereby influencing scanning, and the mode needs to pay more attention to fruit foods.
Disclosure of Invention
The present invention is based on the above-mentioned needs of the prior art, and an object of the present invention is to provide a method for providing variable data printing on the surface of a fruit or similar irregular object, thereby providing an anti-counterfeit mark.
In order to solve the technical problem, the technical scheme provided by the patent comprises:
a tracing anti-counterfeiting printing identification method is characterized by comprising the following steps: firstly, a server generates an individualized two-dimensional code original manuscript digital image corresponding to a current printing stock; secondly, pasting a paster with a window at the top end of the ink jet printing equipment with the surface of a printing stock, and shooting a bent paster image through a camera at the top end of the ink jet printing equipment; comparing the bent paster image with a paster flat image to generate a mapping relation between the bent paster image and the paster flat image; and fourthly, adjusting the digital original image into a bent digital image through the mapping relation, and driving an ink jet head at the top end of the ink jet printing equipment to jet print the personalized two-dimensional code corresponding to the current printing stock to the printing stock according to the bent digital image.
Preferably, the server sets a UR L accessible after code scanning, and the user accesses the UR L to obtain personalized information of the corresponding substrate.
Preferably, the inkjet printing apparatus includes a head provided on a carriage at a front end of the inkjet printing apparatus, and inkjet printing at different positions by moving left and right on the carriage; a camera is arranged above the sliding frame.
Preferably, the whole label is of a first color, and a square through hole is formed in the middle of the label.
Preferably, a square frame marked with a second color is arranged around the through hole.
Preferably, the label is removably attached to the spray head of the printing device.
Preferably, the personalized parameters of the commodity include production area, weight, production date and shelf life.
Preferably, the inkjet printing ink is an edible pigment.
Preferably, the inkjet printing device is a handheld inkjet printing device.
Preferably, the handheld inkjet printing device comprises a wireless communication module through which to communicate with a server.
By the scheme, regular partial two-dimensional code images can be formed at all angles of the surface of the curved printing stock, scanning and identification are facilitated, and personalized information of the printing stock can be variably marked while the quality of the printing stock is not damaged by spray printing of the variable two-dimensional code, so that traceability and anti-counterfeiting are provided.
Drawings
Fig. 1 is a schematic structural view of a device used in the present embodiment.
Fig. 2 is an enlarged schematic view of the tip of the head in this embodiment.
FIG. 3 is a schematic view of a sticker and windowing mechanism in this embodiment.
Detailed Description
The following detailed description of the embodiments of the present patent application is provided for illustrative purposes only, and should not be construed as limiting the scope of the present patent application.
The present embodiment provides a method of printing an article. The method is applied to fruit or similar articles having curved or irregular surfaces. The variable information such as the two-dimensional code can be printed on the article, particularly food, through the specific implementation mode, so that a user can conveniently inquire and confirm the source and the quality of the product.
The method of the present embodiment comprises the steps of:
step one, a server generates an individualized two-dimensional code original manuscript digital image corresponding to a current printing stock.
As shown in FIG. 1, the server 2 can set specific two-dimensional code information according to a current printing material, such as the apple shown in FIG. 2, the two-dimensional code information can be scanned by an intelligent handheld terminal and then personalized parameters of a corresponding commodity, such as a production place, a weight, a production date, an expiration date and the like, the two-dimensional code can be directly printed on a two-dimensional code pattern in a word-spraying mode, or a UR L which can be accessed after code scanning is set, and then a user accesses the UR L to obtain personalized information of the corresponding printing material, so that the purposes of tracing and verifying are achieved.
In this embodiment. The printing device shown in fig. 1 uses an inkjet printing device 1, which directly prints on a printing material by means of an inkjet printing head. However, since the surface of the printing material, for example, the apple in fig. 2, is a sphere-like surface and the curvatures of the surfaces are different, when the printing material is normally sprayed from the top to the bottom, the pattern sprayed on the surface of the printing material may be distorted on the actual surface of the printing material, for example, the pattern is obviously elongated or compressed. Under the condition, the two-dimensional code is scanned in a certain specific area, especially in the angle direction of jet printing, so that different areas of the ink jet printing equipment can be formed, and if the scanning equipment such as a mobile phone camera slightly deflects, the situation that the two-dimensional code cannot be identified is often caused due to very serious actual deformation of the two-dimensional code image, so that the tracking and the identification of the tracing commodity of a user are influenced.
And step two, attaching the paster with the window at the top end of the ink jet printing equipment to the surface of the printing stock, and shooting the bent paster image through a camera at the top end of the ink jet printing equipment.
The position relation among the pixels of the two-dimensional code determines the information of the two-dimensional code, and the relation among the pixels is influenced by the elongation and the compression of the image, so that the scanning recognition is difficult, but the two-dimensional code image generally has strong robustness, namely complete two-dimensional code information can be obtained under most conditions if only local images are scanned, so that in order to solve the technical problem, part of the two-dimensional code image can be truly presented at different angles as much as possible in the specific implementation mode, and thus good recognition effect can be achieved at different shooting angles.
As shown in fig. 1, in the present embodiment, the inkjet printing apparatus preferably used includes a handheld inkjet printing apparatus 1, which includes a nozzle 14 disposed at the front end of the inkjet printing apparatus, and a camera 15 disposed on the top of the nozzle, the nozzle is typically disposed on a carriage (not shown), and the inkjet printing is performed at different positions by moving left and right on the carriage, and the camera 15 is disposed above the carriage, so that an image can be shot from the angle of the nozzle to a printing material without affecting the view of the camera due to the nozzle, because the nozzle is only required to be disposed on one side of the carriage during shooting.
The front end of the ink jet printing device 1 is provided with a cover, the front end of the cover is provided with a flexible label 12, the whole label is of a first color, such as white or black, a square through hole 13 is arranged in the middle of the label, and the shape of the through hole is a matter of course. The through hole can also be circular, and the shape of the through hole is the same as that of the frame of the two-dimensional code digital image. In fact, besides the through holes, a pattern, such as a square frame, having the same shape as the two-dimensional code can be arranged on the sticker instead of the through holes, and the pattern is drawn by a second color different from the first color, so that the object of the patent can be partially achieved. However, the sticker also has unique advantages because it conforms better to the armed surface due to the fenestration. Further preferably, a small through hole can be formed in the middle of the sticker, and a pattern matched with the shape of the two-dimensional code digital image is drawn on the periphery of the through hole, so that the sticker can be kept attached to the surface of a printing stock, and the surface of the printing stock can be restored as truly as possible. However, in this way, the sticker needs to be removed during ink-jet printing in order to be able to spray the ink onto the surface of the printing material, so that the sticker is detachably connected to the ink-jet printing device in various ways.
The sticker is preferably composed of plastic paper, which is flexible but not significantly elastically deformable.
In this embodiment, preferably, four corners of the label are connected to the front end of the printing apparatus through four posts. When the label paper is used, the four upright posts protruding from the four corners are attached to the surface of a printing stock, and meanwhile, the label paper is pressed on the surface of the printing stock and is basically attached to the printing stock. The mode of adopting the stand can adapt to the stock surface of various shapes better to keep the adaptation of label paper and stock surface.
Since the substrate surface is curved. The label paper is shaped to extend substantially along the surface of the printing material after being attached to the surface of the printing material, and the projected size of the label paper after being attached is smaller than the original size when viewed from right above. But from a number of other perspectives, at least a portion of the decal has a substantially distortion-free, flat shape.
Instead of a hand-held inkjet printing device, a stationary inkjet printing device may be used, which is connected to the server via a data line. In addition, as an alternative, the inkjet printing device may further be provided with a wireless communication module, such as a bluetooth module, a mobile communication module, and communicate with the server through the communication module, so as to obtain corresponding information.
And step three, comparing the bent paster image with the paster tiled image to generate a mapping relation between the bent paster image and the paster tiled image.
In the inkjet printing, if the surface of the substrate is inclined from the top to the bottom, the inkjet pattern generally formed when the inclined surface is inkjet-printed is larger than an intended area; similar to the case of a light spot. Whereas the deformation is greater if the substrate surface is inclined at a greater angle.
In the scanning of the two-dimensional code, although the two-dimensional code is highly robust to the identification, if the two-dimensional code is seriously deformed and the position relationship between pixels is changed, an identification error may be caused. In the actual shooting process, the curvature and the curvature change of the surface of the printing stock can cause serious deformation of the two-dimensional code, and only a very limited angle can be successfully identified if the two-dimensional code is not adjusted. However, in reality, the shooting angles may be different, and for convenience of scanning, the whole two-dimensional code has strong scannability in different areas and at different angles on the curved surface, so that the actual identification operation is facilitated. Therefore, when the two-dimensional code is opposite to a certain surface, the two-dimensional code part needs to have a smooth shape in vision, and the two-dimensional code image can be successfully recognized only by providing a local image actually, so that the adjustment has strong recognizability. This adjusted pattern is in fact highly consistent with the shape of the sticker applied to the surface of the substrate.
Therefore, in the present embodiment, the curved sticker image is photographed and compared with the tiled sticker image to generate a mapping relationship between the curved sticker image and the tiled sticker image. Namely, the mapping relation between the two-dimensional code images after adjustment and before adjustment can be obtained.
The algorithm of the mapping relationship in the present embodiment can be implemented by various methods in the prior art. For the accuracy of the algorithm, the reference point preferably can correspond the through hole in the middle of the sticker to the icon in the middle of the two-dimensional code, and the square mark on the sticker to the surrounding frame of the two-dimensional code. That is to say, mapping points are arranged in the middle and the periphery of the bent sticker image and the sticker tiled image; the method can be realized through plane mapping.
And fourthly, adjusting the digital original image into a bent digital image through the mapping relation, and driving an ink jet head at the top end of the ink jet printing equipment to jet print the personalized two-dimensional code corresponding to the current printing stock to the printing stock according to the bent digital image.
After the mapping relationship is obtained, the digital original image is adjusted to a curved digital image. According to a new image, the ink-jet printing head is driven to jet-print the two-dimensional code on the surface of a printing stock, so that a part of a relatively normal two-dimensional code pattern can be almost seen under a plurality of angles which are opposite to the printing stock, and the scanning of a user is facilitated.
By the above embodiment, in the present invention, the server first generates the corresponding variable information corresponding to the commodity information of each printing material, for example, when the printing material is apple, including the weight of apple, the date of production of apple, the place of production of apple, the kind of apple, etc., and then stores the information on a predetermined web page, the web page UR L is made into a two-dimensional code pattern digital pattern, and then the digital pattern is sent to the inkjet printer, and the deformed pattern is generated by the method of the present invention and is inkjet-printed on the printing material.
The above are only preferred embodiments of the present patent, and the protection scope of the present patent is not limited thereto, and all modifications, deletions, or substitutions of certain elements on the detailed description of the patent should be included in the protection scope of the present patent.
Claims (10)
1. A tracing anti-counterfeiting printing identification method is characterized by comprising the following steps:
firstly, a server generates an individualized two-dimensional code original manuscript digital image corresponding to a current printing stock;
secondly, pasting a paster with a window at the top end of the ink jet printing equipment with the surface of a printing stock, and shooting a bent paster image through a camera at the top end of the ink jet printing equipment;
comparing the bent paster image with a paster flat image to generate a mapping relation between the bent paster image and the paster flat image;
and fourthly, adjusting the digital original image into a bent digital image through the mapping relation, and driving an ink jet head at the top end of the ink jet printing equipment to jet print the personalized two-dimensional code corresponding to the current printing stock to the printing stock according to the bent digital image.
2. The method for tracing anti-counterfeiting printing marks according to claim 1, wherein the server is provided with a UR L which is accessible after code scanning, and a user accesses the UR L to obtain personalized information of a corresponding printing material.
3. The tracing anti-counterfeiting printing mark method according to claim 1, wherein the inkjet printing equipment comprises a nozzle, the nozzle is arranged on a carriage at the front end of the inkjet printing equipment, and inkjet printing is carried out at different positions by moving left and right on the carriage; a camera is arranged above the sliding frame.
4. The tracing anti-counterfeiting printing mark method according to claim 1, wherein the whole label is of a first color, and a square through hole is arranged in the middle of the label.
5. The tracing anti-counterfeiting printing identification method according to claim 4, wherein a square frame marked with a second color is arranged around the through hole.
6. The method for tracing anti-counterfeiting printing marks according to claim 5, wherein the label is detachably connected with a spray head of the printing device.
7. The method for tracing anti-counterfeiting printing marks according to claim 1, wherein the personalized parameters of the commodities comprise production area, weight, production date and shelf life.
8. The method for tracing an anti-counterfeit printed mark according to claim 1, wherein the ink-jet printing ink is edible pigment.
9. The tracing anti-counterfeiting printing mark method according to claim 1, wherein the inkjet printing equipment is handheld inkjet printing equipment.
10. The tracing anti-counterfeiting printing identification method according to claim 9, wherein the handheld ink-jet printing equipment comprises a wireless communication module, and the wireless communication module is used for communicating with a server.
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