WO2013097822A1 - 数码喷印同步控制装置及其控制方法 - Google Patents
数码喷印同步控制装置及其控制方法 Download PDFInfo
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- WO2013097822A1 WO2013097822A1 PCT/CN2012/088085 CN2012088085W WO2013097822A1 WO 2013097822 A1 WO2013097822 A1 WO 2013097822A1 CN 2012088085 W CN2012088085 W CN 2012088085W WO 2013097822 A1 WO2013097822 A1 WO 2013097822A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
- G06K15/18—Conditioning data for presenting it to the physical printing elements
- G06K15/1801—Input data handling means
- G06K15/1803—Receiving particular commands
- G06K15/1806—Receiving job control commands
- G06K15/1807—Receiving job control commands relating to the print image preparation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
- G06K15/18—Conditioning data for presenting it to the physical printing elements
- G06K15/1894—Outputting the image data to the printing elements
- G06K15/1898—Outputting the image data to the printing elements while adapting the order of the data to the printing elements' arrangement, e.g. row-to-column conversion
Definitions
- the invention relates to the technical field of digital printing, in particular to a digital printing synchronous control device and a control method thereof. Background technique
- Digital printing technology is a non-contact printing technology developed in recent years. It processes, transmits and prints image data directly.
- the reason why it is called non-contact printing is because digital inkjet printing is a drop-on-demand inkjet printing nozzle. It forms a series of extremely small channels inside the nozzle, and the mechanical effect generated by the piezoelectric crystal will be The ink is extruded from such a microchannel and directly ejected onto a predetermined position on the surface of the substrate to form an image, and the nozzle and the surface of the substrate are generally maintained at a pitch of about 1 mm.
- the digital printing technology eliminates the process of plate making, short printing cycle and high efficiency, especially for variable data, as well as color gradient images and other printing tasks with high printing complexity. s solution.
- Digital printing technology supports the printing of multiple color images based on CMYK four colors (ie Cyan, Magenta Magenta, Yellow Yellow and Black blacK), while the formation of color images is through different colors of CMYK four colors.
- the dot matrix is combined to correspond to the process of printing, that is, different numbers and sizes of ink droplets are mixed into an image.
- the amount of ink droplets depends on the data transmitted, which is the hallmark of digital technology. Because it is multi-color printing, the hardware system of each color surface cannot be installed in the same physical position, but there is a certain physical spacing, so there must be an overprint problem between multiple color surfaces. This problem is called color surface. The issue of synchronization between.
- the so-called synchronization is to ensure that multiple color faces of the same page are to be printed on the same position of the substrate, so that a complete image can be formed.
- the alignment of this position needs to cover the two dimensions of the X direction and the Y direction. This requires effective control of the transmission timing and printing timing of each color surface data, so that the color surface data printed at different times can be printed on the same position of the substrate.
- the page size of the printed job is the same in one production process, that is, during the printing process of one job.
- Even large-scale production that is, the same size of the page, the relatively large number of production, is basically a production process.
- the synchronization between multiple color planes only needs to be overprinted once. From the concept of overprinting, it is to find ways to ensure that multiple color surfaces of the same page are printed. Together.
- some models need to adjust the length of the plate cylinder, and some models need to manually adjust the physical position of each color surface.
- the existing digital printing technology also has different overprinting methods for different models, that is, manually adjusting the physical position of each color surface, or fixing the physical position, and ensuring the registration of the subsequent color surface and the front color surface through the delay of time. .
- the present invention provides a digital jet printing synchronization control device and a control method thereof for realizing continuous printing of pages of different sizes on a multi-color surface.
- a digital jet synchronization control apparatus includes: a storage unit for storing data of respective color planes; and a control unit for controlling the interaction processing unit to perform the data reception, storage, transmission, and Printing trigger signal generation; an interaction processing unit, configured to receive data of each color surface from a front end system of the digital printing device under the control of the control unit, store the received data into the storage unit, and send the stored data to The back-end system of the digital printing device, the printing trigger signal of each color surface generated according to the signals of the encoder and/or the color-coded sensor on the periphery of the digital printing device is sent to the back-end system of the digital printing device.
- the present invention provides a digital printing synchronization control method, comprising: parsing a print command, a color surface parameter, a device parameter, and a print job parameter received from a front end system of a digital printing device, the print command including starting a print command, a cancel print command, the color plane parameter includes a physical distance of each color plane relative to the first color plane, the equipment parameter includes a maximum print effective width of the digital printing apparatus, and the print job parameter includes a print job The number of color faces required to be configured, the page length of the print job, the width, the number of pages, the page spacing within a single job, the spacing between print jobs; in response to the start print command, the storage for each color face is assigned according to the number of color faces Space; when it is detected that the storage space allocated for each color plane is sufficiently idle, the data of each color plane is received page by page from the front end system and stored in the corresponding storage space; when it is detected that one page of complete data is stored, Determine the data of each color plane of the page according to the print command
- the invention provides a digital printing device with a control device suitable for continuous printing of pages of different sizes on different colors
- the device and the method are easy to realize, and no need to re-overprint and adjust the machine, therefore, the requirement for the short-run job printing generation effectively expands the application field of the digital printing technology, and improves the digital printing. Production efficiency reduces waste of production media.
- FIG. 1 is a schematic structural view of a digital jet printing control device of the present invention applied to a digital jet printing apparatus;
- FIG. 2 is a detailed structural view of a digital jet printing synchronous control device according to an embodiment of the present invention;
- FIG. 3 is a flow chart of a digital jet synchronization control method in accordance with an embodiment of the present invention. detailed description
- the image processing of the image dot matrix data of the printing job is usually completed by the front end system of the digital printing device (ie, the upper layer software), and the image of one page is divided into four colors of CMYK. Then, the color separation surface is sequentially sent to the back end system of the digital printing device (ie, the print control portion, including the head unit) for printing.
- the front end system of the digital printing device ie, the upper layer software
- the image of one page is divided into four colors of CMYK.
- the color separation surface is sequentially sent to the back end system of the digital printing device (ie, the print control portion, including the head unit) for printing.
- the front-end system provides a user operation interface through which parameters such as color surface parameters and device parameters can be configured, print jobs (including print job parameters), input start print, cancel print, etc.
- the color plane parameters include The physical spacing of each color surface relative to the first color surface
- the device parameters include the maximum print effective width of the digital printing device
- the print job parameters include the number of color surfaces required for the print job, the page length, width, and page of the print job. Number, page spacing within a single job, spacing between print jobs, and more.
- the dot matrix data of a page image can be considered to be composed of a plurality of lines in the Y direction, which is called a line data; and for the line data, it can be considered as a plurality of lines from the X direction.
- the point consists of a unit point.
- the width of one page image is the number of points in the X direction multiplied by the diameter of one unit point
- the length of one page image is the number of lines in the Y direction multiplied by the diameter of one unit point.
- the diameter of this single point depends on the size of the dots that can be ejected by the digital printing equipment. Since it is digitally printed, the gray level of each unit point will eventually be represented by a number. For example, if the gray level of a single point is 5, the data of this point processed during the transmission is 5.
- the physical spacing of each color plane relative to the first color plane, the page spacing, and the spacing between print jobs can be converted to line numbers.
- digital printing equipment generally has peripherals such as encoders and color-coded sensors.
- the continuous print mode is achieved by the encoder's signal.
- the so-called continuous printing is after the page printed by the index code printing device, after the page spacing required by the user is finished, the next page is printed.
- the color code printing mode is achieved by the encoder signal and the color code sensor's color code signal.
- the so-called color mark printing is that the index code printing device prints one page after scanning a valid color mark, and then waits for the next color mark to arrive, and then prints.
- the encoder provides an encoder signal, and the so-called encoder signal refers to the process in which the encoder rotates with the mechanical bearing for one week.
- the generated pulse signal, the number of pulses generated by different encoder rotations is different, and the effective level and pulse duration may also be different.
- the encoder signal is a unit trigger signal for the digital printing device to perform one-line data printing. After the back-end system receives one or several valid encoder signals, the first-line data printing process is completed. For example, suppose that the printing of 1-line data is triggered by 3 valid encoder signals. If the page length of a page image is j mm and the number of lines converted is k line, then 3k of printing is required to complete the k-line printing. Triggering of encoder signals.
- the color-coded sensor provides a color-coded signal.
- the so-called color-coded signal is a pulse signal generated after the color-coded sensor is collected on the color-coded mark on the substrate.
- Different color-coded sensors have effective levels and pulse durations of the pulse signals. May be different.
- the printing of the digital printing equipment in the color-coded mode needs to be based on the color-coded signal, that is, every time a valid color-coded signal is received, it is considered that a new page needs to be printed.
- FIG. 1 is a schematic view showing the application of the digital jet printing synchronous control device of the present invention to a digital printing apparatus.
- the purpose of the digital jet synchronization control device according to the present invention is to effectively control the transmission timing and the printing timing of each color surface data, so that the color surface data of the same page printed at different times can be printed in the same position of the substrate. On, and to ensure that the same size page or different size pages can be continuously printed on the substrate.
- the digital jet synchronization control apparatus comprises a storage unit 1, an interaction processing unit 2 and a control unit 3, wherein the storage unit 1 is used to store data of respective color planes; the interaction processing unit 2 is used for Under the control of the control unit 3, receiving data of each color plane from the front end system of the digital printing apparatus, storing the received data into the storage unit 1, and transmitting the stored data to the back end system of the digital printing apparatus, according to
- the signal of the encoder and/or the color sensor of the peripheral of the digital printing device generates a printing trigger signal of each color surface and sends it to the back end system of the digital printing device;
- the control unit 3 is configured to control the interactive processing unit 2 to perform the data receiving. , store and send, and print trigger signal generation steps.
- the backend system performs continuous printing based on the received print trigger signal and color plane data.
- the functions of the control unit 3 include: (1) parsing and transmitting a plurality of parameters, including print job parameters (including the number of color planes required for the print job, the page length of the print job, the width, the number of pages, and the single job) The spacing between pages, the spacing between print jobs), the color plane parameters (including the physical spacing between multiple color planes), etc.; (2) the storage space for each color plane in storage unit 1 according to the number of color planes (3) continuously querying or detecting the storage state of the storage unit 1, the working state of the interaction processing unit 2 (including the query of data reception, storage, and transmission status) and the printing status of the backend system, and instructing the interaction processing unit 2 to operate, including When to start receiving and transmitting data, when to start page detection (PD, Page Detect) signal generation, etc., feed back the printing status to the front-end system.
- print job parameters including the number of color planes required for the print job, the page length of the print job, the width, the number of pages, and the single job
- the functions of the interactive processing unit 2 include: (1) providing a physical interface with a front end system, a back end system, and peripheral devices (including an encoder and/or a color scale sensor) of the digital printing device to receive print commands from the front end system, Color surface parameters, device parameters, print job parameters, and data for each color face, encoder signals and/or color code signals received from encoder and/or color sensor, data for each color face, and generated print trigger signals Sending to the backend system; (2) interacting with the control unit 3, receiving the parsed parameters and operation instructions from the control unit 3, and returning the working state to the control unit 3; (3) performing specific operational work, including The front-end system receives the data and stores it in the corresponding storage space. Sending data to the back-end system, filtering the encoder input signal and/or color-coded signal, generating print trigger commands for each color plane, timing control of read and write operations on the memory unit, feedback to the front-end system, print status, etc. .
- the storage unit 1 mainly provides a large-capacity storage space for image dot matrix data of a print job.
- the size of the storage unit also determines the maximum size of the page that can be printed. Because the larger the page size, the larger the amount of bitmap data contained, the less the number of pages stored in the same size storage space. If you want to use the principle of storing one page of complete data and then sending it to the back end, then after the storage space is equally divided according to the number of color planes, the halving value is the data amount of the maximum monochrome dot matrix data that can be tolerated.
- the control unit 3 parses the parameters received from the front end system by the interaction processing unit 2, and allocates the storage space in the storage unit 1 according to the number of color planes analyzed, for example, 4 colors are parsed. Printing, the storage space in the storage unit is equally divided into 4 equal parts, used for data storage of 4 color planes, and the start address and end of each part of the storage space are transmitted to the interaction processing unit 2.
- the control unit 3 detects that the storage space is sufficiently idle, the interactive processing unit 2 is activated to receive the dot matrix data of each color plane of one page from the front end system page by page and store it in the corresponding storage space.
- the interactive processing unit 2 When the control unit 3 detects that there is a complete page of dot matrix data in the storage space, the interactive processing unit 2 is activated to transmit data of the respective color planes of the page to the backend system. After the control unit 3 detects that a complete page of data has been sent to the backend system, the activation interaction processing unit 2 generates a print trigger signal of each color plane according to the encoder signal and/or the color patch signal, as the color plane of the backend system. The start signal for starting a page print. When the control unit 3 queries that the backend system has finished printing a page, status information is generated and returned to the front end system through the interactive processing unit 2. The above-described data receiving, storing, transmitting, and printing trigger signal generating steps are repeated to complete the printing of consecutive pages.
- a virtual paper arrival flag signal (hereinafter referred to as a PD signal) is set as a print trigger signal for each color plane.
- a PD signal When a color surface receives a PD signal, it is considered that a piece of paper has arrived, and it is necessary to print the color surface, and then the printing of the color surface is started.
- the PD signals of the respective color planes are generated at different times, so that multiple color planes of the same page can be printed at different times, thereby achieving synchronization between the plurality of color planes. Therefore, the key point of the embodiment of the present invention is when to generate PD signals to the respective color planes.
- control unit 3 is implemented by using a micro-control unit (MCU) circuit, and the field programmable gate is utilized.
- MCU micro-control unit
- FPGA Field Programmble Gate Array
- the FPGA itself can provide a lot of registers and some small space buffers, but since the content of image data tends to be large, it is necessary to set a large-capacity memory circuit 3 to store data of each color plane.
- the FPGA circuit 2 mainly includes a receiving module 21, a data transmitting module 23, and an encoder input signal. Processing module 24 and/or color scale input signal processing module 25, PD signal generation module 26.
- the receiving module 21 is configured to receive a print command, a color plane parameter, a device parameter, and a print job parameter from the front end system, and send the received command and parameter to the MCU circuit 3 for analysis.
- the MCU circuit 3 detects that the storage space allocated for each color plane in the memory circuit 1 is sufficiently free, the receiving module 21 receives the data of each color plane page by page from the front end system, and stores the received data to the memory circuit according to the timing control. In the corresponding storage space in 3.
- the data sending module 23 is configured to determine, when the MCU circuit 3 stores a page of complete data in the memory circuit, the start time and end of data transmission of each color plane of the page according to the print job parameter and the device parameter parsed by the MCU circuit 3. At the moment, data of each color plane of the page stored in the memory circuit is transmitted to the backend system according to the determined start time and end time.
- the data transmission process since the total width that the digital printing device can print (see device parameters) is determined by its physical characteristics, and the image width of the print job is different according to the production needs, the data is transmitted. In the process, it will inevitably involve the processing of complements and subtractions of some lattices.
- the image width is larger than the printable width of the device, a part of the dot matrix must be cut off during data transmission; likewise, if the position of the image on the substrate needs to be moved, it may be needed in data transmission. Fill in blank data for certain data. All of these data processing related parameters are required to be received and stored by the data transmission module 23 (e.g., stored in a register set in the data transmission module 23), and are effectively applied during the transmission of the data.
- the start of data transmission can be started simultaneously with multiple color planes, or one color plane can be started each time, in order to avoid competing for the bus read by the memory circuit 1.
- the encoder input signal processing module 24 is used for filtering and frequency division doubling of the encoder signal input through the encoder. Since the encoder signal is an input signal provided by an external encoder, the FPGA must undergo a certain filtering process to eliminate possible glitch in the hardware transmission process (the specific method is to judge the signal for a certain period of time) , can be used normally. The number of pulses actually generated by the encoder does not necessarily meet the number of encoder signals required by the digital printing device during the rotation of the encoder. Therefore, frequency division multiplication processing is required to obtain a quantity that satisfies the requirements. A valid encoder signal that is a valid signal available to the FPGA.
- the encoder signal after filtering and frequency division multiplication is provided as a valid encoder signal to the PD signal generation module 26 as a basic trigger unit and statistical unit of the number of image print lines and the number of delay lines.
- the color code input signal processing module 25 is configured to filter the color code signal input through the color code sensor. Similarly, in digital printing equipment, the color-coded signal is generally provided by an external color-coded sensor. After the FPGA filters the received color-coded signal, it can be used normally.
- the print trigger signal generation module 26 is configured to process the signal and the MCU circuit 3 according to the encoder input signal processing module 24 and/or the color code input signal processing module 25 after the MCU circuit 3 detects that a page of data has been transmitted to the backend system.
- the parsed print job parameters, device parameters, and color plane parameters produce print trigger signals for each color face. Regardless of the continuous print mode or the color mark print mode, as long as the backend system receives a PD signal belonging to the corresponding color plane, the color plane starts to print a page.
- the key of the PD signal generating module 26 is how to generate PD signals of the respective color planes of the same page, so as to ensure that a plurality of color planes can be printed on the same physical position of the substrate, thereby forming a complete color image.
- the respective color planes there is a certain physical spacing between the respective color planes, which can be converted into the number of lines and then measured by the number of recording encoder signals, and according to the recorded encoder signals.
- the number is delayed to produce a PD signal for each color plane. For example, if the running direction of the paper is from the first color to the second color plane, the PD signal of the same page is generated during the generation of the PD signal, and the PD signal is definitely generated from the first color plane.
- the printing of the 1-line data is triggered by the three encoder signals.
- the physical distance between the second color plane and the first color plane is m, and the number of lines converted is n lines. Then, the first color plane is printed.
- the n-line After the 1-line data, the n-line must be delayed, and the second color plane can start printing on the same line.
- This delay of the n-line requires 3n encoder signals to be triggered. That is, the number of encoder signals is recorded at the time of generation of the PD signal of the first color plane, and when the number of recorded encoder signals is equal to 3n, the PD signal of the second color plane is started to be generated.
- Other color surfaces perform similar delays to their own to ensure multi-color overprinting.
- the MCU circuit 3 After detecting that the complete data of the current page has been sent to the backend system, the MCU circuit 3 generates a print trigger signal of the first color plane; and records the number of encoder signals from the time when the print trigger signal of the first color plane is generated.
- the number of recorded encoder signals corresponds to the physical distance of any one of the remaining color planes with respect to the first color plane, a print trigger signal of the color plane is generated; from the generation timing of the print trigger signal of each color plane
- the number of encoder signals is recorded.
- the above steps are repeatedly performed to generate print trigger signals for the respective color planes of the next page.
- the print trigger signals of the respective color faces can be generated page by page according to the following steps: When the MCU circuit 3 detects that the complete data of the current page has been sent to the backend system, when the first valid one is received After the color mark signal, a print trigger signal of the first color plane is generated; the number of encoder signals is recorded from the time when the print trigger signal of the first color plane is generated, when the number of encoder signals recorded and the remaining color planes The print trigger signal of the color plane is generated when any one of the physical spacings of the first color plane corresponds; the number of encoder signals is recorded from the moment when the print trigger signal of each color plane is generated, when the recorded encoder When the number of signals corresponds to the page length, the above steps are repeatedly performed to generate print trigger signals for the respective color planes of the next page. It is pointed out here that for the color mark printing mode, there is no concept of page spacing.
- the PD signal generating module 26 includes four PD signal generating sub-modules 261 264, and the data transmitting module 23 also includes four data transmitting sub-modules 231 234.
- This setting is designed to meet the design requirements of up to 4 colors, that is, up to CMYK four-color print synchronization. In the printing requirements of less than 4 colors (for example, 1 color, 2 colors), there will be less than 4 data transmission sub-modules and PD signal generation sub-modules actually working in the FPGA.
- the difference between the continuous printing mode and the color-coded printing mode is that the same encoder signal is simultaneously supplied to all PD signal generating sub-modules, and the color-coded sensor signal is first supplied to the first PD signal generating sub-module. After use, after the PD signal generation sub-module 1 undergoes certain processing, it is output to other PD signal generation sub-modules.
- the relationship between multiple data transmission sub-modules is parallel.
- the FPGA circuit 2 further includes a status feedback module (not shown) that returns the print status of the back end system queried by the MCU circuit 3 to the front end system.
- a status feedback module (not shown) that returns the print status of the back end system queried by the MCU circuit 3 to the front end system.
- the XAAR1001 print head requires three encoder signals as trigger signals for printing on one line of data. Thus, if the data of a page image can be divided into 2000 lines from the Y direction, a total of 6000 encoder signals are required as trigger signals.
- the job has 100 pages, and the page size of each page is 300mm x 500mm, that is, the page width is 300mm, the page length is 500mm, and the unit is converted into page dot matrix, X direction. (ie, the width direction) is represented by a point of 4255 points, and the Y direction (ie, the length direction) is represented by a line as a 7092 line.
- step S301 the MCU circuit 3 performs print commands, color plane parameters, device parameters, and print job parameters (including page size parameters 4255 and 7092) received from the front end system of the digital printing apparatus. Parsing, and passing the parsed device parameters and print job parameters to the data transmission sub-module 231 234, converting the parsed color surface parameters (including the physical spacing between the 2nd, 3rd, and 4th color planes and the first color plane into The corresponding line number), device parameters, and print job parameters (including page size parameter 7092) are sent to the PD signal generation sub-module 261 264. Note that the data transmission module needs to know the size of the X and Y directions of the print job, and the PD signal generation module only needs to know the size of the Y direction.
- step S302 the MCU circuit 3 allocates the storage space of each color plane in accordance with the number of color planes required for actual printing in response to the start of the print command. For example, suppose the memory circuit is set to 512MB, and for 4-color printing, each color plane can be allocated 128MB of storage space. After the MCU circuit 3 completes the allocation of the storage space, the start address and the end address of the storage space corresponding to each color plane are written into the registers of the FPGA.
- step S303 when the MCU circuit 3 detects that the storage space allocated for each color plane is sufficiently free, the startup receiving module 21 receives the data of each color plane page by page from the front end system and stores it in the corresponding storage space.
- step S304 when the MCU circuit 3 detects that a page of complete data is stored, the data transmission sub-module 231 234 is activated to determine the start of data transmission of each color plane of the page according to the parsed print job parameters and device parameters.
- Time and end time (specifically, the start time and end time of data transmission in the X and Y directions are determined according to the page length and width and the maximum printable width of the device), and according to the determined start time and end time Will The stored data of the various color planes of the page is sent to the back end system of the digital printing device.
- step S305 after the MCU circuit 3 detects that a page of data has been transmitted to the backend system, the PD signal generating module 26 is activated to generate signals and parsing according to the encoder and/or color sensor of the periphery of the digital printing device.
- the print job parameters, device parameters, and color plane parameters produce print trigger signals for each color face to be sent to the backend system.
- the encoder rotates with the mechanical bearing for one revolution, and can generate thousands of pulse signals.
- the encoder input signal processing module 24 inside the FPGA performs filtering for, for example, 1 ⁇ s, after filtering (possibly
- the signal of the frequency division multiplication process is also required as a valid encoder signal, and is supplied to the PD signal generation sub-module 261 264 as a basic trigger unit and a statistical unit of the number of image print lines and the number of delay lines.
- the PD signal generation submodule After the MCU circuit 3 detects that the complete data of the current page has been transmitted to the backend system, the PD signal generation submodule
- the PD signal generation sub-module 262 When the number of recorded encoder signals reaches 9000 lines, that is, after the delay of 3000 lines, the PD signal generation sub-module 262 generates The PD signal of the 2nd color plane of the same page. Similarly, after the third color plane and the fourth color plane have also completed their own delay, the PD signal generating sub-modules 263 and 264 generate PD signals of the third color plane and the fourth color plane of the same page.
- each color plane starts to record the number of encoder signals from 0 after the PD signal of one page is generated, until the number of encoder signals is equal to 3 times the line length of the page 7092, which is considered to be
- the number of encoder signals is recorded, the page spacing is completed, and then the PD signal of the next page is generated, and the counter of the number of encoders is cleared, and the recording is resumed. In this way, the printing of this 100-page job is completed.
- the color mark printing mode After the color mark sensor is collected into one color mark on the substrate, a pulse signal is generated, and the color code is input to the signal processing module 25 of the FPGA to be used as an effective color.
- the flag signal is supplied to the PD signal generation sub-module 261.
- the processed color-coded signal is transmitted only to the PD generation sub-module 261, instead of being directly transmitted to all of the PD signal generation sub-modules like the encoder signal, because on the substrate, it may be printed once. At the time, a lot of color-coded signals have been continuously printed, and the data printing process in the color-coded mode is actually a combination of digital printing and one-time printing.
- the back-end system receives a PD, that is, it is considered to be the arrival of a piece of paper, and prints one page of image data.
- the page length of a page of images may not correspond exactly to the color patch spacing on the substrate, so that the page length of the page to be printed may be larger than the actual color patch spacing.
- the page length of a page of images is smaller than the actual color patch spacing, it is natural to collect a color code signal, that is, generate a PD signal to trigger the printing of one page.
- the color scale The input signal processing module 25 processes all the collected color code signals, and then outputs the signals to the PD signal generation sub-module 261, and the sub-modules complete the selection of the color-coded signals to determine which color-coded signals need to generate PDs. Which color-coded signals do not need to generate PD, and the color-coded signals that need to generate PD are transmitted to several other PD signal generation sub-modules.
- the color code signals received by other sub-modules are effective color-coded signals that need to generate PD, so the delay and PD can be directly generated.
- the color code printing mode is used.
- the PD signal generation sub-module 261 264 starts to work, but does not start generating the PD signal at this time, but waits for the PD signal generation sub-module 261 to receive
- the PD signal of the first color plane is started to be generated, and the other three PD signal sub-modules 262 264 have been notified that one PD signal has been generated.
- the other three sub-modules generate a PD signal belonging to their own color plane after each delay of the corresponding color plane.
- each PD module After each PD module generates the PD signal, it also judges whether the 1-page data is printed or not by recording the number of encoder signals. If the PD signal generation sub-module 261 receives the color-coded signal during the printing of one page, it is directly discarded. Different from the continuous printing mode, the PD signal generating sub-module 261 determines that the number of encoder signals recorded from the time of generating the PD signal of each color plane is equal to the page length of the line of 7092 after determining that one page has been printed. 3 times), instead of immediately generating the next PD, but waiting for a new color-coded signal, the PD is generated, and then the subsequent three color planes are notified for delay and a new PD is generated. Moreover, as described above, in the color patch printing mode, there is no concept of page spacing. When the last page of the last color plane is printed, the status information is generated by the MCU circuit 3 and returned to the front-end system. The 100-page job has been printed.
- step S305 After the generated PD signal of each color plane is sent to the backend system for printing in step S305, in step S305, in step
- step S306 it is judged whether the current page is the last page, and if so, the printing is ended, otherwise the process goes to step S303, and the above steps are repeated to perform data transmission and printing of the next page.
- step S303 and step S304 are performed in parallel. Specifically, while transmitting data to the backend system, the MCU circuit 3 continues to determine whether there is enough space in the memory circuit 1 to receive data of the front end system, if If there is enough space, FPGA circuit 2 will be started to continue to request data from the front-end system.
- each data transmitting submodule 231 234 determines the page image data in the X direction and the Y direction according to the size of each page image. The starting and ending moments.
- the data transmitting module 23 obtains the size of each page image through the MCU circuit 3, and the MCU circuit 3 can directly query the state of the received data, or receive the same at the same time as receiving the start print command of a job sent by the front-end system.
- the various parameters of the job can be set in the data transmission sub-module to record the parameters of the page size.
- the MCU circuit 3 Whenever the MCU circuit 3 starts a data transmission sub-module to send one-color data of one page image to the back-end system, the MCU circuit 3 writes a size parameter of the page to be sent to the data transmission sub-module, and the data transmission sub-module This set of parameters can be written to the corresponding register and judged during the data transmission process, thus ensuring the correctness of the data transmission of different size pages.
- Another step is that the PD signal generating module 26 determines whether a page has completed printing according to the number of lines in the Y direction of the image in the process of generating the PD signal, and whether it is necessary to start generating the PD signal of the next page. Since each sub-module performs a delay corresponding to the length of the page after generating a PD, and then generates the next PD, then each sub-module needs to know the page length size of the current page while generating a PD.
- the method of setting a corresponding buffer in the PD signal generating module may be used, and the MCU circuit 3 writes the page length of each page that has been sent to the backend system into the buffer, and each PD signal generating submodule corresponds to the same one. Cache. In this way, each sub-module generates a PD and reads a corresponding page length parameter from the cache to ensure an accurate delay after the PD is generated.
- the embodiment of the present invention is directed to the control feature of the real-time printing of the digital printing device, mainly adopting a combination of the MCU circuit and the FPGA circuit, and combining the peripheral memory circuit to complete the synchronous control of the multi-color surface printing. Continuous printing of different size pages of multi-color surface is realized, real-time performance is good, and synchronization control precision is high. Under the premise of ensuring the printing speed, the entire synchronization process and page size can be changed during the printing process, and the continuous printing mode and the color mark printing mode are covered. And because the design of the FPGA circuit part is reasonable, the consumption of hardware resources is greatly reduced, and the cost is reduced. For the actual industrial production, the production efficiency is effectively improved, and the waste of the production shield is reduced.
- the digital inkjet printing of the present invention can also be implemented in the form of software or other hardware.
- each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module.
- the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
- the integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.
- embodiments of the present invention can 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 a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Record Information Processing For Printing (AREA)
- Ink Jet (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12861368.4A EP2708368A4 (en) | 2011-12-31 | 2012-12-31 | SYNCHRONOUS DIGITAL INK JET PRINTING DEVICE AND ITS CONTROL METHOD |
US14/122,951 US9019541B2 (en) | 2011-12-31 | 2012-12-31 | Device and method for synchronization in digital printing |
JP2014516192A JP5996640B2 (ja) | 2011-12-31 | 2012-12-31 | デジタルインクジェット印刷同期制御装置および制御方法 |
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CN201110460194.X | 2011-12-31 | ||
CN201110460194.XA CN103182864B (zh) | 2011-12-31 | 2011-12-31 | 数码喷印同步控制装置及其控制方法 |
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WO2013097822A1 true WO2013097822A1 (zh) | 2013-07-04 |
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PCT/CN2012/088085 WO2013097822A1 (zh) | 2011-12-31 | 2012-12-31 | 数码喷印同步控制装置及其控制方法 |
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US (1) | US9019541B2 (zh) |
EP (1) | EP2708368A4 (zh) |
JP (1) | JP5996640B2 (zh) |
CN (1) | CN103182864B (zh) |
WO (1) | WO2013097822A1 (zh) |
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CN104553374B (zh) * | 2013-10-16 | 2017-02-22 | 北大方正集团有限公司 | 打印控制方法和打印设备 |
CN104553382B (zh) * | 2013-10-22 | 2017-02-15 | 北大方正集团有限公司 | 打印精度的处理方法和装置 |
CN105955679A (zh) * | 2016-04-25 | 2016-09-21 | 北京赛腾标识系统股份公司 | 一种打印机打印信息处理方法及装置 |
CN109002267B (zh) * | 2018-07-09 | 2021-08-31 | 森大(深圳)技术有限公司 | 多喷头打印数据同步传输方法、装置、设备及存储介质 |
CN109572216B (zh) * | 2018-12-24 | 2020-01-03 | 北京美科艺数码科技发展有限公司 | 一种喷墨打印机打印方法 |
CN113500855B (zh) * | 2021-04-29 | 2022-05-06 | 深圳圣德京粤科技有限公司 | 一种喷墨打印正反套印装置及打印方法 |
CN115489219B (zh) * | 2022-09-02 | 2023-11-07 | 昇捷丰标识科技(厦门)有限公司 | 喷码机的dpi调整控制方法、装置、计算机可读介质及设备 |
CN116945770B (zh) * | 2023-09-07 | 2024-02-20 | 广州市普理司科技有限公司 | 一种数码印刷机多色套印控制系统 |
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Also Published As
Publication number | Publication date |
---|---|
EP2708368A1 (en) | 2014-03-19 |
JP2014523822A (ja) | 2014-09-18 |
CN103182864B (zh) | 2015-05-20 |
EP2708368A4 (en) | 2015-06-10 |
JP5996640B2 (ja) | 2016-09-21 |
CN103182864A (zh) | 2013-07-03 |
US20140307289A1 (en) | 2014-10-16 |
US9019541B2 (en) | 2015-04-28 |
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