Imaging method, system, electronic device and readable storage medium for plate-based printing

Abstract

The application provides an imaging method, system, electronic equipment and readable storage medium for plate-making printing. The imaging method for plate-making printing comprises the following steps: obtaining image data to be printed and performing printing layout on the image data, wherein the printing layout specifically comprises splitting whole brush data of a laser device into odd brush data and even brush data; alternately arranging the odd brush data and the even brush data, and simultaneously performing filling between adjacent two odd brush data or adjacent two even brush data to generate printed data after layout. The imaging method for plate-making printing provided by the application splits whole brush data of a laser device into odd brush data and even brush data, adopts the interleaving arrangement mode between the odd brush data and the even brush data, thereby forming a data interleaving area, so as to improve the resolution of a printed image, effectively eliminate or reduce smoke lines between each brush, and improve plate-making quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flexographic printing plate making, in particular to an imaging method and system for flexographic printing plate making, an electronic device and a readable storage medium. BACKGROUND

[0002] At present, the flexographic printing plate making of a flexographic direct plate making machine is performed by a single raw laser beam generated by a laser, which is split into a plurality of extremely fine laser beams by a multi-fiber dense arrangement or a complex high-speed rotating optical beam splitting system. Each beam is modulated by an acousto-optic modulator according to the light and dark characteristics of the image information in the computer, and then becomes a controlled beam. After focusing by an optical lens, dozens to hundreds of micro-laser beams are directly irradiated onto the surface of the flexographic printing plate to perform plate making. The diameter of each micro-laser beam, the light intensity distribution shape of the beam, and the laser engraving method all affect the definition and resolution of the image formed on the printing plate. The smaller the spot size of the laser beam, the closer the light intensity distribution of the beam to a rectangle (ideal case), and the better the laser engraving method, the higher the definition and resolution of the image formed by laser engraving. The spot size of the laser beam is determined by the wavelength of the laser source, and using a shorter wavelength laser and higher level optical system elements can improve the plate making resolution. However, the currently mature laser is divided into gas laser, solid-state laser, semiconductor laser, etc. The commonly used laser light source has a wavelength of 400 nm (nanometer) to 1064 nm. The laser energy transmission is more mature and widely used in optical fiber transmission scheme. The laser with laser modulation function is expensive and complex in technology, so it is less used.

[0003] Under the condition of using a specific type of laser, laser light source and fiber dense arrangement, the flexographic direct plate making machine can provide a resolution of 1200 DPI (Dots Per Inch), 2000 DPI, 2400 DPI, 2540 DPI, 4000 DPI, 5080 DPI. To achieve higher resolution under the related technical conditions, higher level optical systems and elements need to be replaced, otherwise it is difficult to achieve. The laser engraving flexographic printing plate material uses the implementation method of ablating the black film on the surface of the material, which causes a large amount of smoke and dust after ablation during the engraving process, thereby affecting the smoke marks on the flexographic printing plate after ablation, especially between the two brushes, which affects the definition of the plate making. SUMMARY

[0004] The present application aims to at least solve one of the problems in the prior art or related art.

[0005] Therefore, one object of the present application is to provide an imaging method for flexographic printing plate making.

[0006] A second object of the present application is to provide an imaging system for flexographic printing plate making.

[0007] A third object of the present application is to provide an electronic device.

[0008] A fourth object of the present application is to provide a readable storage medium.

[0009] To achieve the above object, the technical scheme of the first aspect of the present application provides an imaging method for plate-making printing, comprising: obtaining image data to be printed, the image data to be printed comprising odd row pixel data and even row pixel data; performing printing layout on the image data to be printed, comprising: obtaining a first number N of a laser device and one full brush data of the laser device; according to the image data to be printed, splitting the one full brush data of the laser device into odd brush data and even brush data, the odd brush data and the even brush data being arranged alternately; obtaining a second number M of overlap between adjacent two odd brush data and / or adjacent two even brush data; the starting positions of the adjacent two brush data being different by (N-M) / 2 number of pixel points; performing empty space processing on the first (N-M-1) / 2+M number of brush data; performing empty space processing on the first M number of second brush data; performing filling on the first M number of odd brush data with the last M number of data of the previous odd brush data, and filling the remaining N-M number of data with continuous odd row pixel data of the image data to be printed; performing filling on the first M number of even brush data with the last M number of data of the previous even brush data, and filling the remaining N-M number of data with continuous even row pixel data of the image data to be printed; and generating printed data after layout.

[0010] According to the imaging method for plate-making printing provided by the present application, the image data to be printed is arranged and combined by interleaving odd row pixel data and even row pixel data, the number of the laser device used for printing is determined, and at present, the optical fiber dense arrangement scheme is generally used in the laser energy transmission in the industry of soft plate making, in which scheme, a certain number of optical fibers are fixed into an optical fiber dense arrangement in a horizontal arrangement or an inclined arrangement, and each optical fiber emits one route of laser for exposure and engraving the flexible plate material in the imaging process. The number of optical fibers in one optical fiber dense arrangement is usually an even integer multiple of 4, such as 16 routes, 32 routes, 48 routes, 64 routes, 96 routes, etc. Meanwhile, one full brush data of the laser device is split into odd brush data and even brush data according to odd bits and even bits, the overall data of one brush of the laser device is called one full brush data, the odd brush data only prints the odd row pixel data of the image to be printed, and the even brush data only prints the even row pixel data of the image to be printed. In this way, in the process of layout, the odd brush data and the even brush data are arranged alternately, that is, the odd brush data and the even brush data are arranged in an interleaving manner, so as to form a data interleaving area, thereby improving the resolution of the printed image and improving the plate-making quality.

[0011] Meanwhile, (N-M) / 2 pixel points are moved after the first brush data is completed to perform the second printing (second brush data), and the position of the second printing is just in the gap between the two continuous routes of the first brush data, and there is a partial overlap between the two continuous routes of the first brush data, so that the smoke lines between any two routes of the first brush are effectively eliminated or reduced, and the clarity of the plate making is improved. Moreover, for the two continuous odd brush data, the first M routes of the next odd brush data are filled with the last M routes of the previous odd brush data, so that the problem of poor exposure effect at the end of each brush is eliminated or reduced, and the printing plate making effect is further improved.

[0012] For example, the first brush data is odd brush data, after the first brush data is completed, the laser device is translated by a certain distance to perform the printing of the second brush data, and the second brush data is even brush data. After the second brush data is completed, the laser device is translated by a certain distance to perform the printing of the third brush data, and the third brush data is odd brush data, and the first M routes of the third brush data overlap with the last M routes of the first brush data, and the remaining N-M routes are filled with odd row data pixel data according to the image to be printed, so as to complete the layout of the entire image data to be printed.

[0013] In addition, the plate making and printing imaging method provided by the application can also have the following additional technical features:

[0014] In some technical solutions, the step of printing layout of the image data to be printed can also include: performing empty route processing on the last two brush data.

[0015] In this technical solution, in the process of printing layout of the image data to be printed, the number of routes of the last two brush data can be appropriately processed to ensure the smooth completion of the entire printing layout process.

[0016] In some technical solutions, the plate making and printing imaging method can also include: transmitting the printed data after the layout to the laser control board of the plate making machine.

[0017] In the technical scheme, the printed and laid-out data is input to a laser control board of a plate making machine, the laser control board performs printing work according to the laid-out printing data, and after each brush data is completed, an encoder performs signal feedback, thereby controlling the movement of a laser platform to perform the next brush laser plate making and printing work. Meanwhile, the laser platform of the laser is controlled to perform spiral displacement at (N-M) / 2 pixel points / circle to perform laser plate making and printing. That is, the application limits the displacement length between the two continuous brush data to ensure the interleaving arrangement between the odd brush data and the even brush data, that is, the odd brush data and the even brush data are arranged in a staggered manner to form a data interleaving area, thereby improving the resolution of the printed image and improving the plate making quality.

[0018] In some technical schemes, optionally, the first number N includes one of 16, 32, 48, 64 and 96.

[0019] In some technical schemes, optionally, the first brush data is odd brush data; or the first brush data is even brush data.

[0020] In the technical scheme, the first brush data can be started from odd brush data or from even brush data, and both can realize the interleaving arrangement between the odd brush data and the even brush data.

[0021] In some technical schemes, optionally, the second number M satisfies that N-M is an odd number.

[0022] In the technical scheme, by limiting the second number M to satisfy that N-M is an odd number, the interleaving arrangement between the two connected brushes can be ensured, that is, when the laser platform of the laser is spirally displaced at (N-M) / 2 pixel points / circle, the interleaving between the odd brush data and the even brush data can be realized.

[0023] In some technical schemes, optionally, the plate making machine is a CTP (Computer To Plate, direct plate making machine) plate making machine.

[0024] The technical scheme of the second aspect of the present application provides an imaging system for plate making printing, comprising: an acquisition module configured to acquire image data to be printed, the image data to be printed comprising odd row pixel data and even row pixel data; a layout module configured to perform printing layout on the image data to be printed, comprising: acquiring a first number N of paths of a laser device and a full brush data of the laser device; splitting the full brush data of the laser device into odd brush data and even brush data according to the image data to be printed, the odd brush data and the even brush data being arranged alternately; acquiring a second number M of paths of overlap between two adjacent odd brush data and / or two adjacent even brush data; the starting positions of the two adjacent brush data being different by (N-M) / 2 pixel points; performing empty space processing on the first (N-M-1) / 2+M paths of the first brush data; performing empty space processing on the first M paths of the second brush data; performing padding on the first M paths of the odd brush data with the last M paths of the previous odd brush data, and padding the remaining N-M paths with continuous odd row pixel data of the image data to be printed; performing padding on the first M paths of the even brush data with the last M paths of the previous even brush data, and padding the remaining N-M paths with continuous even row pixel data of the image data to be printed; and a generation module configured to generate printing data after layout.

[0025] According to the imaging system for plate making printing provided by the present application, the image data to be printed is arranged and combined by interleaving odd row pixel data and even row pixel data, the number of paths of the laser device used for printing is determined, and at present, the optical fiber dense arrangement scheme is generally used in the laser energy transmission in the industry of soft plate making, in which scheme, a certain number of optical fibers are fixed into an optical fiber dense arrangement in a horizontal arrangement or an inclined arrangement, and each optical fiber emits one path of laser for exposure and engraving of the flexible plate material in the imaging process. The number of optical fibers in an optical fiber dense arrangement is usually an even integer multiple of 4, such as 16 paths, 32 paths, 48 paths, 64 paths, 96 paths, etc. Meanwhile, the full brush data of the laser device is split into odd brush data and even brush data according to the odd row pixel data and the even row pixel data of the image to be printed, the overall data of the laser device for one brush is referred to as full brush data, the odd brush data is used for printing only the odd row pixel data of the image to be printed, and the even brush data is used for printing only the even row pixel data of the image to be printed. In this way, in the process of layout, the odd brush data and the even brush data are arranged alternately, i.e., in the interleaving arrangement manner between the odd brush data and the even brush data, so as to form a data interleaving area, thereby improving the resolution of the printed image and improving the plate making quality.

[0026] Meanwhile, the first brush data of ((N-M)-1) / 2+M paths are handled by supplementing the gaps, which can be understood as the non-printing data, and the gaps are not printed. After the first brush data is completed, the laser device is moved by (N-M) / 2 pixel points to perform the second printing (second brush data), and the position of the second printing is just in the gap between the two continuous paths of the first brush data, and there is a partial overlap between the two continuous paths of the first brush data. In this way, the smoke lines between any two paths of the first brush are effectively eliminated or reduced, and the clarity of the plate making is improved. Moreover, for the two continuous odd brush data, the first M paths of the next odd brush data are filled with the last M paths of the previous odd brush data, so as to eliminate or reduce the problem of poor exposure effect at the end of each brush, and further improve the printing plate making effect.

[0027] For example, the first brush data is odd brush data, after the first brush data is completed, the laser device is translated by a certain distance to perform the second brush data, and the second brush data is even brush data. After the second brush data is completed, the laser device is translated by a certain distance to perform the third brush data, and the third brush data is odd brush data, and the first M paths of the third brush data overlap with the last M paths of the first brush data. Meanwhile, the remaining N-M paths are filled with the odd row data pixel data according to the image to be printed, so as to complete the layout of the entire image data to be printed.

[0028] The technical scheme of the third aspect of the present application provides an electronic device, which comprises a memory and a processor, and the memory stores programs or instructions, and the programs or instructions are executed by the processor to realize the steps of the imaging method for plate making printing in any one of the technical schemes of the first aspect.

[0029] The electronic device provided by the present application can realize the steps of the imaging method for plate making printing in any one of the technical schemes of the first aspect. Therefore, the electronic device also has all the beneficial effects of the imaging method for plate making printing in any one of the technical schemes of the first aspect, which will not be repeated here.

[0030] The technical scheme of the fourth aspect of the present application provides a readable storage medium, which stores programs or instructions, and the programs or instructions are executed to realize the steps of the imaging method for plate making printing in any one of the technical schemes of the first aspect.

[0031] According to the imaging method for printing plate provided by the present application, the whole brush data of the laser device is divided into odd brush data and even brush data, the odd brush data and the even brush data are arranged in an interleaving manner, so as to form a data interleaving area, thereby improving the resolution of the printed image and improving the quality of the printing plate. Meanwhile, through the method of partial overlap between the odd brush data and the even brush data, the smoke lines appearing between each brush are effectively eliminated or reduced, and the clarity of the printing plate is improved. In addition, for the two continuous odd brush data or the two continuous even brush data, the method of partial overlap is adopted, so as to eliminate or reduce the problem of poor exposure effect at the end of each brush, and further improve the printing plate effect.

[0032] Additional aspects and advantages of the present application will become apparent from the following description with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0034] Figure 1 Fig. 1 shows one of the flow schematic diagrams of the imaging method for printing plate provided by the embodiment of the present application;

[0035] Figure 2 Fig. 2 shows another of the flow schematic diagrams of the imaging method for printing plate provided by the embodiment of the present application;

[0036] Figure 3 Fig. 3 shows the schematic diagram of the laser dense data brush principle provided by the embodiment of the present application;

[0037] Figure 4 Fig. 4 shows the schematic diagram of the interleaving of the odd brush data and the even brush data provided by the embodiment of the present application;

[0038] Figure 5 Fig. 5 shows the schematic diagram of the actual arrangement principle of the odd brush data and the even brush data provided by the embodiment of the present application;

[0039] Figure 6 Fig. 6 shows the symbolic diagram provided by the embodiment of the present application;

[0040] Figure 7 Fig. 7 shows the schematic diagram of the arrangement of the first four brush data provided by the embodiment of the present application;

[0041] Figure 8 Fig. 8 shows the schematic diagram of the arrangement of the last three brush data provided by the embodiment of the present application;

[0042] Figure 9 Fig. 9 shows the schematic diagram of the data transmission format provided by the embodiment of the present application;

[0043] Figure 10 A schematic diagram of a hardware interface of a plate making machine is shown;

[0044] Figure 11 A block diagram of an imaging system of plate making printing is shown;

[0045] Figure 12 A block diagram of an electronic device is shown. DETAILED DESCRIPTION

[0046] In order to enable a more clear understanding of the above-mentioned objects, features and advantages of the present application, the present application will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0047] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other different manners from those described herein, and therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0048] As Figure 1 shown, one embodiment of the present application provides an imaging method of plate making printing, comprising:

[0049] S102, obtaining image data to be printed, the image data to be printed comprising odd row pixel data and even row pixel data.

[0050] S104, performing printing layout on the image data to be printed, comprising: obtaining a first number N of a laser device and one full brush data of the laser device; according to the image data to be printed, splitting the one full brush data of the laser device into odd brush data and even brush data, the odd brush data and the even brush data being arranged alternately; obtaining a second number M of overlap between two adjacent odd brush data and / or two adjacent even brush data; the starting positions of the two adjacent brush data being different by (N-M) / 2 pixel points; performing empty space processing on the first (N-M-1) / 2+M brush data; performing empty space processing on the first M brush data; performing filling on the first M odd brush data with the last M data of the previous odd brush data, and filling the remaining N-M data with continuous odd row pixel data of the image data to be printed; performing filling on the first M even brush data with the last M data of the previous even brush data, and filling the remaining N-M data with continuous even row pixel data of the image data to be printed.

[0051] S106, generating printing data after layout.

[0052] According to the present application, the image data to be printed is arranged by interleaving odd row pixel data and even row pixel data, the number of laser devices used for printing is determined, and the fiber dense arrangement scheme is commonly used in the laser energy transmission of the current flexographic plate making industry. In this scheme, a certain number of fibers are fixed into a fiber dense arrangement in a horizontal or oblique arrangement, and each fiber emits a laser for exposure and engraving the flexible plate material during the imaging process. The number of fibers in a fiber dense arrangement is usually an even integer multiple of 4, such as 16, 32, 48, 96, etc. The entire brush data of the laser device is divided into odd brush data and even brush data according to the odd row pixel data and even row pixel data of the image to be printed. The entire data of the laser device is referred to as a whole brush data, the odd brush data only prints the odd row pixel data of the image to be printed, and the even brush data only prints the even row pixel data of the image to be printed. In this way, during the layout process, the odd brush data and the even brush data are arranged alternately, that is, the odd brush data and the even brush data are interleaved, so as to form a data interleaving area, thereby improving the resolution of the printed image and improving the plate making quality.

[0053] Meanwhile, the first (N-M-1) / 2+M paths of the first brush data are supplemented, which can be understood as empty paths without printing data. After the first brush data is completed, the laser device moves (N-M) / 2 pixel points to perform the second printing (second brush data), and the position of the second printing is exactly in the gap between the two continuous paths of the first brush data, and there is a partial overlap between the two continuous paths of the first brush data. In this way, the smoke lines between any two paths of the first brush are effectively eliminated or reduced, and the clarity of the plate making is improved. Moreover, for the two continuous odd brush data, the first M paths of the next odd brush data are filled with the last M paths of the previous odd brush data, thereby eliminating or reducing the problem of poor exposure effect at the end of each brush, and further improving the printing plate making effect.

[0054] For example, the first brush data is odd brush data, after the first brush data is completed, the laser device is translated by a certain distance to perform the second brush data, and the second brush data is even brush data. After the second brush data is completed, the laser device is translated by a certain distance to perform the third brush data, and the third brush data is odd brush data. Moreover, the first M paths of the third brush data overlap with the last M paths of the first brush data, and the remaining N-M paths are filled with odd row pixel data according to the image to be printed, so as to complete the layout of the entire image data to be printed.

[0055] In some embodiments, the step of printing and laying out the image data to be printed can further include: performing empty path processing on the last two brush data.

[0056] In this embodiment, during the printing layout process of the image data to be printed, for the last two prints, the number of paths of the last two prints can be appropriately filled to ensure the smooth completion of the entire printing layout process.

[0057] In some embodiments, the imaging method for plate making and printing may optionally include transmitting the typed printing data to the laser control board of the plate making machine.

[0058] In this embodiment, the printed layout data is input to the laser control board of the plate-making machine. The laser control board performs the printing work according to the layout data. After each print is completed, the encoder provides signal feedback, thereby controlling the laser platform to move for the next print. Simultaneously, the laser platform is controlled to perform a spiral displacement of (NM) / 2 pixels per revolution for laser plate-making. In other words, this application limits the displacement length between two consecutive prints to ensure the staggered arrangement of odd and even print data, forming a data interleaving area, thereby improving the resolution of the printed image and enhancing plate-making quality.

[0059] In some embodiments, the first number of channels N may optionally include one of 16 channels, 32 channels, 48 ​​channels, 64 channels, and 96 channels.

[0060] In some embodiments, the first data refresh may be an odd number of refreshes; or the first data refresh may be an even number of refreshes.

[0061] In this embodiment, the first data refresh can start from either an odd number or an even number, thus achieving an alternating setting between odd and even data refreshes.

[0062] In some embodiments, the second path M may optionally satisfy NM being an odd number.

[0063] In this embodiment, by limiting the second number M to satisfy that NM is odd, it can be ensured that the two connected brushes are staggered. That is, when the laser platform of the laser performs a spiral displacement of (NM) / 2 pixels / revolution, the odd-numbered brush data and the even-numbered brush data can be interleaved.

[0064] In some embodiments, the plate-making machine may optionally be a CTP (Computer To Plate) plate-making machine.

[0065] like Figure 2 As shown, another embodiment of the present invention provides an imaging method for plate making and printing, comprising the following steps:

[0066] S202, F-CTP laser path number selection.

[0067] S204, front-end image odd-even brush data splitting processing.

[0068] S206, first-last brush data empty processing.

[0069] S208, F-CTP cylinder rotation, while performing S210 and S214.

[0070] S210, data transmission to F-CTP laser control board.

[0071] S212, laser control board receives data to control laser operation, performing S216.

[0072] S214, encoder signal feedback.

[0073] S216, laser platform movement.

[0074] S218, imaging spot interleaved scanning.

[0075] S220, determine whether data transmission is complete, if yes, perform S222, otherwise perform S208.

[0076] S222, cylinder stop, laser platform homing, laser stop working.

[0077] S224, image exposure complete.

[0078] The following will be combined with the attached Figure 2 Detailed description of the imaging method for plate making and printing provided by the present application:

[0079] The image data of a plurality of (N) laser devices is split into odd and even brushes according to the number of plate making brushes.

[0080] The first M (M

[0081] The first ((N-M)-1) / 2+M paths of the first brush data are processed for emptying.

[0082] The first M paths of the odd brush are filled with the last M paths of the previous odd brush (overlap), and the remaining (N-M) paths are filled with continuous odd row pixel data of the image.

[0083] The first M paths of the even brush are filled with the last M paths of the previous even brush (overlap), and the remaining (N-M) paths are filled with continuous even row pixel data of the image.

[0084] The last two data refreshes were performed to fill in the gaps.

[0085] The processed data is then transmitted to the laser control board of the plate-making machine.

[0086] The laser control board receives data and controls the laser to operate.

[0087] The plate-making operation is carried out using an F-CTP plate-making machine (flexible direct plate-making machine).

[0088] After the plate-making machine's rollers rotate, the encoder provides signal feedback to control the movement of the laser platform for laser plate making.

[0089] During plate making, a spiral displacement of (NM) / 2 pixels / cycle is performed to interleave odd-numbered and even-numbered brush data for scanning and printing.

[0090] Currently, the flexographic plate-making industry commonly uses a dense fiber optic array (FBA) for laser energy transmission. In this array, a certain number of optical fibers are fixed in a horizontal or diagonal arrangement. Each fiber emits a laser beam during the imaging process to expose and engrave the flexible plate. The number of fibers in a FBA is typically an even multiple of 4, such as 16, 32, 48, or 96. The operating principle is that all fibers work simultaneously during the plate-making process according to the data sent by the plate-making output device. The exposure from the top to the bottom of the flexographic plate is called one data refresh. To achieve an 8000 DPI resolution based on a 4000 DPI resolution, an alternating method of odd and even data refreshes is used. This is achieved by overlapping odd-numbered refreshes by one beam and even-numbered refreshes by one beam. The following explanation uses a data refresh formed by four laser beams as a basis to illustrate the design principle.

[0091] like Figure 3 As shown, Figure 3 This is a schematic diagram simulating a laser densely packed data brush at a resolution of 4000 DPI. Each circle represents the light spot formed by each laser on the flexographic plate. The four circles with grids inside represent odd-numbered brush data, and the four diagonal circles represent even-numbered brush data.

[0092] To achieve 8000 DPI from 4000 DPI, a method of alternating odd-numbered and even-numbered data brushing is used in the data arrangement. This alternation method is achieved by reducing the lateral movement speed of the data brush. For example... Figure 4 As shown, when the data is interleaved, the odd-numbered and even-numbered brushes will create a data interleaving area. This data interleaving area is the key principle for upgrading the resolution from 4000 DPI to 8000 DPI.

[0093] The actual continuous arrangement is as shown in Figure 5 The odd and even data brushes are staggered to better show the principle, and the actual data brushes are at the same height.

[0094] The present application has the advantage of improving the quality of plate making without changing the equipment. The resolution of plate making is improved by the odd and even number interleaving method. The smoke lines between each brush are effectively eliminated or reduced by the partial overlap between the odd and even data brushes, and the clarity of plate making is improved.

[0095] In a specific embodiment, the steps include:

[0096] 1. 8000DPI, 3 interleaved actual application

[0097] Taking 48, 4000DPI laser dense arrangement as an example, the spiral line displacement needs to be performed at a speed of 22.5 pixels / cycle during horizontal displacement, so that 8000DPI, 3 interleaved full-surface images can be realized on the original 48, 4000DPI precision equipment by odd and even interleaving data.

[0098] Similarly, N laser, M interleaved 8000DPI exposure can also be realized.

[0099] 2. Data flow arrangement

[0100] Suppose there is an 8000DPI image with a size of 1 inch, the image pixel points are 8000x8000, a 48 laser equipment is used, the interleaved number is set to 3, and the data arrangement symbol is as shown in Figure 6 .

[0101] Suppose the laser number is N, the interleaved number is M, and the first brush data is ((N-M)-1) / 2+M empty, it is known that N=48 and M=3, so the first brush data is 25 empty. The first four brush data is as shown in Figure 7 The first 25 data of the first brush is empty, and the starting data of the image falls on the 26th laser number of the first brush. If the data arrangement algorithm is changed, the starting data of the image can also fall on the even brush, which is not discussed here. The second brush is the first even brush, so the first three data of the second brush is overlapped (empty). The first three data of the third brush is overlapped with the last three data of the first brush (the first odd brush), forming 3 interleaved. Similarly, the first three data of the fourth brush is overlapped with the last three data of the second brush (the second even brush). The moving distance between each brush is (N-M) / 2=22.5 laser numbers, which makes the odd and even data staggered.

[0102] The image contains 8000 rows of data. Each refresh process has 45 effective processing paths. After padding with odd and even refreshes, the image requires a total of 179 refreshes. The final three refreshes are as follows: Figure 8 As shown, the first three data streams of the 179th refresh overlap with the last three data streams of the 177th refresh. For the last two refreshes, the 178th and 179th refreshes, the data streams of the last two refreshes can be appropriately padded to fill in the gaps. Figure 8 The blank space at the end of the middle section is added to ensure the smooth completion of the entire printing and typesetting process.

[0103] 3. Data transmission format and hardware interface

[0104] 16-channel: Data is transmitted 16 times.

[0105] 32 channels: Data is transmitted 16 times.

[0106] 48 channels: Data is transmitted 16×4 times, using the existing 16×4 data transmission format, with the last 16 channels filled in.

[0107] 64 channels: Data is transmitted 16 times.

[0108] Channel 96: Data is transmitted 16×6 times.

[0109] like Figure 9 and Figure 10 As shown, Figure 9 The data transmission format is shown. Figure 9 Each cell contains 16 bits of data, designated by numbers 1, 2, 3… with the leftmost data bit corresponding to data line 0. Figure 10 During data transmission through the hardware interface shown, the plate-making machine includes the machine itself and the output card. ① represents the machine preparation signal, ② represents the output card start signal, ③ represents the machine line synchronization signal, ④ represents the machine bit synchronization signal, ⑤ represents the output card line strobe signal, ⑥ represents the output card bit strobe signal, and ⑦ represents the output card data signal. First, the plate-making machine sends a machine preparation signal, which is then sent to the output card. The output card also sends a preparation signal. The machine contains line synchronization and bit synchronization signals. The line synchronization signal is the signal indicating one revolution of the roller, and the bit synchronization signal is the dot-mapping frequency signal. The dot-mapping frequency refers to the number of dots completed per unit time by the plate-making machine during laser scanning or other plate-making operations. These two signals are also sent to the output card. After receiving the machine's line and bit synchronization signals, the output card's line and bit strobe signals generate corresponding synchronization signals. These, combined with the output card's line and bit strobe signals, enable the output card to send data to the machine. The hardware interface of the plate-making machine establishes a data communication bridge with external devices (such as computers and service areas) to ensure accurate and rapid data transmission during the plate-making process, thereby achieving efficient plate-making.

[0110] As Figure 11 shown, the embodiment of the second aspect of the application provides an imaging system 1 for plate making printing, comprising: an acquisition module 12, configured to acquire image data to be printed, the image data to be printed comprising odd row pixel data and even row pixel data; a layout module 14, configured to perform printing layout on the image data to be printed, comprising: acquiring a first number N of paths of a laser device and a full brush data of the laser device; splitting the full brush data of the laser device into odd brush data and even brush data according to the image data to be printed, the odd brush data and the even brush data being arranged alternately; acquiring a second number M of paths of overlap between adjacent two odd brush data and / or adjacent two even brush data; the starting positions of the adjacent two brush data being different by (N-M) / 2 pixel points; performing empty space processing on the first (N-M-1) / 2+M paths of the first brush data; performing empty space processing on the first M paths of the second brush data; performing padding on the first M paths of the odd brush data with the last M paths of the previous odd brush data, and padding the remaining N-M paths with continuous odd row pixel data of the image data to be printed; performing padding on the first M paths of the even brush data with the last M paths of the previous even brush data, and padding the remaining N-M paths with continuous even row pixel data of the image data to be printed; and a generation module 16, configured to generate printing data after layout.

[0111] According to the imaging system 1 for plate making printing provided by the application, the image data to be printed is arranged and combined by interleaving odd row pixel data and even row pixel data, the number of paths of the laser device used for printing is determined, and at present, the optical fiber dense arrangement scheme is generally used in the laser energy transmission in the industry of soft plate making, in which scheme, a certain number of optical fibers are fixed into an optical fiber dense arrangement in a flat arrangement or an inclined arrangement, and each optical fiber emits one path of laser for exposure and engraving of the flexible plate material in the imaging process. The number of optical fibers in an optical fiber dense arrangement is usually an even integer multiple of 4, such as 16 paths, 32 paths, 48 paths, 96 paths, etc. Meanwhile, the full brush data of the laser device is split into odd brush data and even brush data according to the odd row pixel data and the even row pixel data of the image to be printed, the whole data of the laser device for one brush is called full brush data, the odd brush data only prints the odd row pixel data of the image to be printed, and the even brush data only prints the even row pixel data of the image to be printed. In this way, in the process of layout, the odd brush data and the even brush data are arranged alternately, i.e. in the interleaving arrangement manner between the odd brush data and the even brush data, so as to form a data interleaving area, thereby improving the resolution of the printed image and improving the plate making quality.

[0112] Meanwhile, the first brush data is supplemented by (N-M) / 2+M paths, which can be understood as the absence of printing data, and the empty path is not printed. After the first brush data is completed, the laser device moves (N-M) / 2 pixel points to perform the second printing (second brush data), and the position of the second printing is just in the gap between the two continuous paths of the first brush data, and there is a partial overlap between the two continuous paths of the first brush data. In this way, the smoke lines between any two paths of the first brush are effectively eliminated or reduced, and the clarity of the plate making is improved. Moreover, for the continuous two odd brush data, the first M paths of the next odd brush data are supplemented by the last M paths of the previous odd brush data, thereby eliminating or reducing the problem of poor exposure effect at the end of each brush, and further improving the printing plate making effect.

[0113] For example, the first brush data is odd brush data, after the first brush data is completed, the laser device is translated by a certain distance to perform the printing of the second brush data, and the second brush data is even brush data. After the second brush data is completed, the laser device is translated by a certain distance to perform the third brush data, and the third brush data is odd brush data, and the first M paths of the third brush data overlap the last M paths of the first brush data. Meanwhile, the remaining N-M paths are supplemented by the odd row data pixel data according to the image to be printed, so as to complete the layout of the entire image data to be printed.

[0114] The imaging system 1 for plate making and printing provided by the embodiment of the application can realize the processes realized by the method embodiments, and thus details are not repeated here.

[0115] As shown in Figure 12 The third aspect of the application provides an electronic device 200, which comprises a memory 202 storing programs and / or instructions, and a processor 204 executing the programs and / or instructions. When the processor 204 executes the programs and / or instructions, the steps of the imaging method for plate making and printing in any one of the technical solutions of the first aspect are realized, and the same technical effects are achieved. Details are not repeated here to avoid repetition.

[0116] The fourth aspect of the application provides a readable storage medium having programs or instructions stored thereon, and the programs or instructions are executed to realize the steps of the imaging method for plate making and printing in any one of the embodiments of the first aspect.

[0117] The readable storage medium provided by the application can realize the steps of the imaging method for plate making and printing in any one of the embodiments of the first aspect. Therefore, the readable storage medium has all the beneficial effects of the imaging method for plate making and printing provided in any one of the embodiments of the first aspect, and details are not repeated here.

[0118] In the description of the present specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integrally connected; can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0119] In the description of the present specification, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or unit referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0120] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0121] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An imaging method for plate making and printing, characterized in that, include: Obtain image data to be printed, wherein the image data to be printed includes odd-numbered row pixel data and even-numbered row pixel data; The printing layout of the image data to be printed includes: acquiring the first number of channels N of the laser device and a whole set of brush data of the laser device; dividing the whole set of brush data of the laser device into odd-numbered brush data and even-numbered brush data according to the image data to be printed, with the odd-numbered brush data and even-numbered brush data being set alternately; acquiring the second number of channels M that overlap between two adjacent odd-numbered brush data and / or two adjacent even-numbered brush data; the number of pixels with a difference of (NM) / 2 channels between the starting positions of two adjacent brush data; filling the first ((NM)-1) / 2+M channels of the first brush data; filling the first M channels of the second brush data; filling the first M channels of the odd-numbered brush data with the last M channels of the previous odd-numbered brush data, and filling the remaining NM channels with the consecutive odd-numbered rows of pixel data of the image data to be printed; filling the first M channels of the even-numbered brush data with the last M channels of the previous even-numbered brush data, and filling the remaining NM channels with the consecutive even-numbered rows of pixel data of the image data to be printed. Generate the typed printing data; Wherein, the first brush data is the odd-numbered brush data; or the first brush data is the even-numbered brush data; when the first brush data is the odd-numbered brush data, the second brush data is the even-numbered brush data.

2. The imaging method for plate making and printing according to claim 1, characterized in that, The step of printing and typesetting the image data to be printed further includes: The last two data refreshes were padded with blanks.

3. The imaging method for plate making and printing according to claim 1, characterized in that, Also includes: The typed printing data is then transmitted to the laser control board of the plate-making machine.

4. The imaging method for plate making and printing according to any one of claims 1 to 3, characterized in that, The first number of channels N includes one of 16 channels, 32 channels, 48 ​​channels, 64 channels, and 96 channels.

5. The imaging method for plate making and printing according to any one of claims 1 to 3, characterized in that, The second path M satisfies that NM is an odd number.

6. The imaging method for plate making and printing according to claim 3, characterized in that, The plate-making machine is a CTP plate-making machine.

7. An imaging system for plate making and printing, characterized in that, include: The acquisition module is used to acquire image data to be printed, wherein the image data to be printed includes odd-numbered row pixel data and even-numbered row pixel data; A typesetting module is used to typeset the image data to be printed, including: acquiring the first number of channels N of the laser device and a whole set of brush data of the laser device; splitting the whole set of brush data of the laser device into odd-numbered brush data and even-numbered brush data according to the image data to be printed, with the odd-numbered brush data and the even-numbered brush data being set alternately; acquiring the second number of channels M that overlap between two adjacent odd-numbered brush data and / or two adjacent even-numbered brush data; the number of pixels that differ by (NM) / 2 channels between the starting positions of two adjacent brush data; filling the first ((NM)-1) / 2+M channels of the first brush data; filling the first M channels of the second brush data; filling the first M channels of the odd-numbered brush data with the last M channels of the previous odd-numbered brush data, and filling the remaining NM channels with the continuous odd-numbered rows of pixel data of the image data to be printed; filling the first M channels of the even-numbered brush data with the last M channels of the previous even-numbered brush data, and filling the remaining NM channels with the continuous even-numbered rows of pixel data of the image data to be printed. The generation module is used to generate the typed printing data. Wherein, the first brush data is the odd-numbered brush data; or the first brush data is the even-numbered brush data; when the first brush data is the odd-numbered brush data, the second brush data is the even-numbered brush data.

8. An electronic device, characterized in that, include: Memory, which stores programs and / or instructions; Processor, executing the program and / or the instructions; Wherein, when the processor executes the program and / or the instructions, it implements the steps of the plate-making and printing imaging method as described in any one of claims 1 to 6.

9. A readable storage medium, characterized in that, It stores a program or instructions that, when executed, implement the steps of the plate-making and printing imaging method as described in any one of claims 1 to 6.

Images