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 PDF

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Publication number
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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WIPO (PCT)
Prior art keywords
color
page
print
color plane
data
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PCT/CN2012/088085
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English (en)
French (fr)
Inventor
沈宏
薛路
陈�峰
Original Assignee
北大方正集团有限公司
北京大学
北京北大方正电子有限公司
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Application filed by 北大方正集团有限公司, 北京大学, 北京北大方正电子有限公司 filed Critical 北大方正集团有限公司
Priority to EP12861368.4A priority Critical patent/EP2708368A4/en
Priority to US14/122,951 priority patent/US9019541B2/en
Priority to JP2014516192A priority patent/JP5996640B2/ja
Publication of WO2013097822A1 publication Critical patent/WO2013097822A1/zh

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/18Conditioning data for presenting it to the physical printing elements
    • G06K15/1801Input data handling means
    • G06K15/1803Receiving particular commands
    • G06K15/1806Receiving job control commands
    • G06K15/1807Receiving job control commands relating to the print image preparation
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/18Conditioning data for presenting it to the physical printing elements
    • G06K15/1894Outputting the image data to the printing elements
    • G06K15/1898Outputting 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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Abstract

本发明提供一种数码喷印同步控制装置,包括:存储单元,其用于存储各个色面的数据;控制单元,其用于控制交互处理单元执行所述数据接收、存储、发送以及打印触发信号产生;交互处理单元,其用于在控制单元的控制下,从数码喷印设备的前端系统接收各个色面的数据、将接收的数据存储到存储单元中、将存储的数据发送到数码喷印设备的后端系统、根据数码喷印设备外围的编码器和/或色标传感器的信号产生各个色面的打印触发信号发送到数码喷印设备的后端系统。相应地,提供一种数码喷印同步控制方法。本发明可实现多色面的不同尺寸页面的连续打印。

Description

数码喷印同歩控制装置及其控制方法 本申请要求在 2011年 12月 31 日提交中国专利局、 申请号为 201110460194.X、 发明名 称为"数码喷印同步控制装置及其控制方法"的中国专利申请的优先权,其全部内容通过引用结 合在本申请中。
技术领域
本发明涉及数码喷印技术领域, 尤其涉及一种数码喷印同步控制装置及其控制方法。 背景技术
数码喷印技术是近年来高速发展起来的一种非接触式印刷技术, 它是将图像数据直接 处理、 传输、 喷印。 之所以叫做非接触式印刷, 是因为数码喷印所釆用的, 是按需喷墨式 印刷喷头, 它是在喷头内部形成一系列极微细小的通道, 通过压电晶体产生的机械效应将 油墨从这种微小通道挤出, 直接喷射到承印体表面预定的位置上成像, 喷嘴与承印体表面 一般保持约 1毫米左右的间距。与传统的印刷方式相比,数码喷印技术省去了制版等过程, 印刷周期短, 效率高, 尤其对于可变数据, 以及彩色渐变图像等印刷复杂度较高的印刷任 务, 具有筒单高效的解决方案。
数码喷印技术支持在 CMYK四色 (即青色 Cyan、 洋红色 Magenta、 黄色 Yellow和黑 色 blacK )的基础上, 完成多种色彩图像的印刷, 而彩色图像的形成, 是通过 CMYK四色 的不同灰度级的点阵组合而成, 对应于喷印的过程, 就是不同数量、 不同大小的墨滴混合 成为图像。 墨滴的数量, 取决于所传递的数据, 这正是数码技术的特点。 由于是多色印刷, 各个色面的硬件系统不可能安装在同一个物理位置上, 而是存在一定的物理间距, 所以必 然存在多个色面之间的套印问题, 该问题称之为色面之间的同步问题。
所谓同步, 就是要保证同一页面的多个色面要打印在承印物的同一个位置上, 才能够 形成一页完整的图像。 而这个位置的对齐, 需要涵盖 X方向和 Y方向两个维度。 这就需要 有效地控制各个色面数据的发送时刻和喷印时刻, 使得在不同时刻喷印的色面数据, 能够 打印在承印物的同一个位置上。
在现有的数码喷印技术中, 在一次生产过程中, 即在进行一个作业的印刷过程中, 所 印刷的作业的页面大小都是一样的。 即使是大单生产, 即, 同一个大小的页面、 数量比较 庞大的生产, 基本也都是一次生产过程。 在这种情况下, 多个色面之间的同步, 也只需要 进行一次套印即可。 从套印的概念上来说, 就是要想办法保证同一页面的多个色面印刷到 一起。 传统印刷中, 有的机型需要调整版滚筒的长度, 有的机型需要手动调整各个色面的 物理位置。 现有的数码印刷技术, 同样是不同的机型有不同的套印方法, 即手动调整各个 色面的物理位置, 或者物理位置固定, 通过时间的延迟来保证后续色面与前色面的套准。
但是, 随着客户需求的提高, 不仅要面向大单生产, 而且还要面向小单客户。 小单客 户的印刷的产品种类比较多, 页面大小不一致, 而每个单的数量又都不大, 这种情况下的 印刷俗称为短版活件印刷。 然而, 按照现有的数码喷印方式, 每次只能喷印一个页面尺寸 一样的作业, 而对于页面尺寸不同的作业, 则需要重新套印、调机, 其生产效率必然降低, 套印和调机所需要的介盾 (即, 承印物)成本所占的成本比重必然提高。
发明内容
为了解决上述问题, 本发明提供一种数码喷印同步控制装置及其控制方法, 以实现多 色面的不同尺寸页面的连续打印。
为了实现以上目的, 本发明提供的数码喷印同步控制装置包括: 存储单元, 其用于存 储各个色面的数据; 控制单元, 其用于控制交互处理单元执行所述数据接收、 存储、 发送 以及打印触发信号产生; 交互处理单元, 其用于在控制单元的控制下, 从数码喷印设备的 前端系统接收各个色面的数据、 将接收的数据存储到存储单元中、 将存储的数据发送到数 码喷印设备的后端系统、根据数码喷印设备外围的编码器和 /或色标传感器的信号产生各个 色面的打印触发信号发送到数码喷印设备的后端系统。
相应地, 本发明提供一种数码喷印同步控制方法, 包括: 对从数码喷印设备的前端系 统接收的打印命令、 色面参数、 设备参数和打印作业参数进行解析, 所述打印命令包括启 动打印命令、 取消打印命令, 所述色面参数包括每个色面相对于第 1色面的物理间距, 所 述设备参数包括数码喷印设备的最大喷印有效宽度, 所述打印作业参数包括打印作业所需 配置的色面数量、 打印作业的页面长度、 宽度、 页数、 单作业内的页面间距、 打印作业之 间的间距; 响应于启动打印命令, 根据色面数量分配每个色面的存储空间; 当检测到为 各个色面所分配的存储空间足够空闲时, 从所述前端系统逐页接收各个色面的数据并存储 到相应的存储空间中; 当检测到存储有一页完整数据时, 根据解析的打印作业参数和设备 参数确定该页的各个色面的数据发送的起始时刻和结束时刻, 并根据确定的起始时刻和结 束时刻将存储的该页的各个色面的数据发送到数码喷印设备的后端系统; 当检测到已发送 一页数据到所述后端系统之后,根据数码喷印设备外围的编码器和 /或色标传感器的信号和 解析的打印作业参数、 设备参数和色面参数产生各个色面的打印触发信号发送到数码喷印 设备的后端系统。
本发明为数码喷印设备提供了一种适用于多色面不同尺寸页面连续打印的控制装置 和方法, 该装置和方法筒单易实现, 无需重新套印和调机, 因此, 适用于短版活件印刷生 成的需求, 有效地拓展了数码喷印技术的应用领域, 提高了数码喷印的生产效率, 减少了 生产介质的浪费。 附图说明
图 1是才 居本发明的数码喷印同步控制装置应用于数码喷印设备的示意性结构图; 图 2是根据本发明实施例的数码喷印同步控制装置的详细结构图;
图 3是根据本发明实施例的数码喷印同步控制方法的流程图。 具体实施方式
以下, 将参照附图和实施例对本发明进行详细描述。
在现有的数码喷印设备中, 通常是由数码喷印设备的前端系统(即, 上层软件) 完成 对打印作业的图像点阵数据的处理, 将一页图像分成 CMYK 四个色面的数据, 然后分色 面依次发送给数码喷印设备的后端系统(即, 打印控制部分, 包括喷头组件)进行打印。 这里, 前端系统提供一个用户操作界面, 通过该界面, 可配置色面参数和设备参数等参数、 提交打印作业(包括打印作业参数)、 输入启动打印、 取消打印等命令, 其中, 色面参数 包括每个色面相对于第 1色面的物理间距, 设备参数包括数码喷印设备的最大喷印有效宽 度, 打印作业参数包括打印作业所需配置的色面数量、 打印作业的页面长度、 宽度、 页数、 单作业内的页面间距、 打印作业之间的间距等。
一页图像的点阵数据, 从 Y方向上来看, 可以认为是由很多条线组成的, 称之为一线 数据; 而对于一线数据来说, 从 X方向上来看, 又可以认为是由很多个点组成的, 称之为 一个单位点。 那么, 可以筒单地理解为, 一页图像的宽度即为 X方向上的点数乘以一个单 位点的直径, 而一页图像的长度即为 Y方向上的线数乘以一个单位点的直径, 而这个单位 点的直径取决于数码喷印设备所能够喷出的点子大小。 由于是数码喷印, 所以每一个单位 点的灰度级最终都将由一个数字表示, 比如一个单位点的灰度级是 5 , 则传输过程中所处 理的这一点的数据就是 5。 每个色面相对于第 1 色面的物理间距、 页面间距、 打印作业之 间的间距均可换算成线数。
此外, 数码喷印设备一般还有一些外围设备, 例如, 编码器和色标传感器。 通过编码 器的信号, 可实现连续打印模式。 所谓连续打印是指数码喷印设备打印完一页之后, 走完 用户所要求的页面间距之后, 紧接着打印下一页。 通过编码器的信号和色标传感器的色标 信号, 可实现色标打印模式。 所谓色标打印是指数码喷印设备在扫描到一个有效的色标之 后, 进行一页的打印, 之后再等待下一个色标的到来, 再进行打印。
编码器提供编码器信号, 所谓编码器信号是指编码器随机械轴承旋转一周的过程中所 产生的脉冲信号, 不同的编码器旋转一周所产生的脉冲个数是不同的, 而且有效电平和脉 冲持续时间也可能不同。 编码器信号是数码喷印设备进行一线数据打印的单位触发信号, 后端系统接收到一个或者几个有效的编码器信号之后 , 完成一线数据的打印过程。 例如, 假设由 3个有效的编码器信号触发完成 1线数据的打印, 那么, 如果一页图像的页面长度 是 j毫米, 换算成线数是 k线, 则完成这 k线的打印就需要 3k个编码器信号的触发。
色标传感器提供色标信号, 所谓色标信号是指色标传感器釆集到承印物上的色标以后 所产生的脉冲信号, 不同的色标传感器, 其脉冲信号的有效电平和脉冲持续时间也可能不 同。 数码喷印设备在色标模式下的打印, 需要以色标信号为基准, 即每接收到一个有效的 色标信号, 才认为需要进行新的一页的打印。
图 1是才 居本发明的数码喷印同步控制装置应用于数码喷印设备的示意图。 根据本发 明的数码喷印同步控制装置的目的在于有效地控制各个色面数据的发送时刻和喷印时刻, 以使得不同时刻喷印的同一页面的色面数据能够打印在承印物的同一个位置上, 并且保证 相同尺寸页面或者不同尺寸页面能够连续地打印在承印物上。
如图 1所示, 根据本发明的数码喷印同步控制装置包括存储单元 1、 交互处理单元 2 和控制单元 3 , 其中, 存储单元 1用于存储各个色面的数据; 交互处理单元 2用于在控制 单元 3的控制下, 从数码喷印设备的前端系统接收各个色面的数据、 将接收的数据存储到 存储单元 1中、 将存储的数据发送到数码喷印设备的后端系统、 根据数码喷印设备外围的 编码器和 /或色标传感器的信号产生各个色面的打印触发信号发送到数码喷印设备的后端 系统; 控制单元 3用于控制交互处理单元 2执行所述数据接收、 存储和发送以及打印触发 信号产生步骤。 后端系统根据接收的打印触发信号和色面数据进行连续打印。
具体来讲,控制单元 3的功能包括: ( 1 )解析和传递多个参数, 包括打印作业参数(包 括打印作业所需配置的色面数量、 打印作业的页面长度、 宽度、 页数、 单作业页面之间的 间距、 打印作业之间的间距)、 色面参数(包括多个色面之间的物理间距)等; (2 )根据 色面数量分配存储单元 1中每个色面的存储空间; (3 ) 不断查询或检测存储单元 1的存储 状态、 交互处理单元 2的工作状态 (包括数据接收、 存储和发送状态的查询)和后端系统 的打印状态, 指导交互处理单元 2动作, 包括何时启动数据的接收和发送、 何时启动页检 测 ( PD , Page Detect )信号的产生等、 向前端系统反馈打印状态。
交互处理单元 2的功能包括: ( 1 )提供与数码喷印设备的前端系统、 后端系统和外围 设备(包括编码器和 /或色标传感器)的物理接口, 以从前端系统接收打印命令、 色面参数、 设备参数、打印作业参数和各个色面的数据、从编码器和 /或色标传感器接收编码器信号和 /或色标信号、将各个色面的数据和所产生的打印触发信号发送给后端系统; (2 )与控制单 元 3之间进行交互, 从控制单元 3接收解析的参数和操作指令, 同时向控制单元 3返回工 作状态; ( 3 )执行具体的操作工作, 包括从前端系统接收数据并存储到相应的存储空间中、 向后端系统发送数据、对编码器输入信号和 /或色标信号进行滤波等处理、产生各个色面的 打印触发命令、 对存储单元的读写操作的时序控制、 向前端系统反馈打印状态等。
存储单元 1主要是为打印作业的图像点阵数据提供一个大容量的存储空间。 存储单元 容量的大小, 也在一定程度上决定了所能够打印的页面的最大尺寸。 因为页面尺寸越大, 所包含的点阵数据量就越大, 同样大小的存储空间所存储的页面数量自然也就越少。 如果 要釆用存储一页完整的数据之后再向后端发送的原则, 则将存储空间根据色面数量平分之 后, 其平分值便是可容许的最大单色面点阵数据的数据量。
当前端系统启动打印时, 控制单元 3对通过交互处理单元 2从前端系统接收的参数进 行解析, 并根据解析的色面数量对存储单元 1 中的存储空间进行分配, 例如, 解析出是 4 色打印, 则将存储单元中的存储空间平均分成 4等份, 用于 4个色面的数据存储, 并将各 部分存储空间的起始地址和结束传递给交互处理单元 2。 当控制单元 3检测到存储空间足 够空闲时, 启动交互处理单元 2从前端系统逐页接收一个页面的各个色面的点阵数据并存 储到相应的存储空间中。 当控制单元 3检测到存储空间中有完整的一页点阵数据时, 启动 交互处理单元 2向后端系统发送该页的各个色面的数据。 当控制单元 3检测到一页完整的 数据已发送给后端系统之后 ,启动交互处理单元 2根据编码器信号和 /或色标信号产生各个 色面的打印触发信号, 作为后端系统各个色面开始一页打印的起始信号。 当控制单元 3查 询到后端系统已完成一个页面的打印时, 产生状态信息, 通过交互处理单元 2返回给前端 系统。 重复上述数据接收、 存储、 发送和打印触发信号产生步骤, 从而完成连续页面的打 印。
以下, 将参照图 2对根据本发明的一个实施例的数码喷印同步控制装置的主要结构进 行描述。
在本实施例中, 设置一个虚拟的纸张到来的标志信号 (以下筒称为 PD信号)作为各 个色面的打印触发信号。 当某一个色面接收到一个 PD信号时, 即认为一张纸到了, 需要 进行这个色面的打印, 于是启动该色面的打印。 各个色面的 PD信号产生的时刻不同, 这 样即可实现同一页面的多个色面在不同时刻进行打印, 从而实现多个色面之间的同步。 因 此, 本发明实施例的关键之处就在于何时产生发往各个色面的 PD信号。
此外, 在本实施例中, 全部利用硬件来实现本发明的数码喷印同步控制装置, 具体来 讲, 利用微控制单元(MCU, Micro-Control Unit ) 电路实现控制单元 3 , 利用现场可编程 门阵列 (FPGA, Field Programmble Gate Array ) 电路实现交互处理单元 2, 利用存储器电 路实现所述存储单元 1。 FPGA本身可以提供许多寄存器和一些小空间的緩存, 但是由于 图像数据的内容往往比较庞大, 所以还是需要设置大容量的存储器电路 3来存储各个色面 的数据。
如图 2所示, FPGA电路 2主要包括接收模块 21、 数据发送模块 23、 编码器输入信号 处理模块 24和 /或色标输入信号处理模块 25、 PD信号产生模块 26。
其中, 接收模块 21 用于从前端系统接收打印命令、 色面参数、 设备参数和打印作业 参数, 并将接收的命令和参数发送给 MCU电路 3进行解析。 当 MCU电路 3检测到存储 器电路 1 中为各个色面所分配的存储空间足够空闲时, 接收模块 21从前端系统逐页接收 各个色面的数据,并根据时序控制将接收的数据存储到存储器电路 3中的相应存储空间中。
数据发送模块 23用于当 MCU电路 3检测到存储器电路中存储有一页完整数据时,根 据 MCU电路 3解析的打印作业参数和设备参数确定该页的各个色面的数据发送的起始时 刻和结束时刻, 并根据确定的起始时刻和结束时刻将存储器电路中存储的该页的各个色面 的数据发送到后端系统。 在数据发送过程中, 由于数码喷印设备可以喷印的总宽度(参见 设备参数)是由其物理特性决定的, 而打印作业的图像宽度是根据生产需要的不同而不同, 所以在数据的发送过程中, 必然涉及一些点阵的补、 减等处理。 比如说, 如果图像宽度比 设备可喷印宽度大, 则在数据发送中必须要截掉一部分点阵; 同样地, 如果图像在承印物 上的位置需要移动的话, 则在数据发送中可能就需要填补一定数据的空白数据。 所有这些 与数据处理相关的参数, 都需要数据发送模块 23 进行接收和存储(例如, 存储到数据发 送模块 23中设置的寄存器中), 并且在数据的发送过程中, 进行有效地应用。 此外, 在多 色的情况下, 数据发送的启动, 可以多个色面同时启动, 也可以每次启动一个色面, 依次 进行, 避免对存储器电路 1读取的总线进行争抢。
编码器输入信号处理模块 24 用于对通过编码器输入的编码器信号进行滤波和分频倍 频处理。 由于是编码器信号是外置的编码器所提供的输入信号, 所以 FPGA内部必须经过 一定的滤波处理以消除硬件传输过程中可能存在的毛刺 (具体方法就是对信号进行一定时 间的釆样判断), 才能够正常使用。 而编码器实际产生的脉冲个数, 并不一定能够正好满 足数码喷印设备在编码器旋转一周的过程中所需要的编码器信号个数, 所以需要分频倍频 处理, 得到数量满足要求的有效编码器信号, 作为 FPGA可用的有效信号。 例如, 由 3个 有效的编码器信号在时间 T内触发完成 1线数据的打印, 而机器编码器轴在时间 T内实际 产生了 5个信号, 那么就需要先 5分频然后 3倍频或者先 10分频然后 6倍频, 产生 3个 信号。 滤波和分频倍频之后的编码器信号, 作为有效的编码器信号, 提供给 PD信号产生 模块 26 , 作为图像打印线数和延迟线数的基本触发单位和统计单位。
色标输入信号处理模块 25 用于对通过色标传感器输入的色标信号进行滤波处理。 同 样地, 在数码喷印设备中, 色标信号一般也是由外置的色标传感器提供, FPGA对接收到 的色标信号进行滤波处理之后, 才能够正常使用。
打印触发信号产生模块 26用于当 MCU电路 3检测到已发送一页数据到后端系统之 后, 根据编码器输入信号处理模块 24和 /或色标输入信号处理模块 25处理的信号和 MCU 电路 3解析的打印作业参数、 设备参数和色面参数产生各个色面的打印触发信号。 不管是连续打印模式,还是色标打印模式,只要后端系统收到一个属于对应色面的 PD 信号, 该色面就开始启动一页的打印。 因此, PD信号产生模块 26的关键就在于如何产生 同一页面的各个色面的 PD信号,来保证多个色面可以打印在承印物的同一个物理位置上, 进而形成一幅完整的彩色图像。
如上所述, 对于多色打印来说, 各个色面之间存在一定物理间距, 该物理间距可换算 成线数后通过记录编码器信号的个数来测量, 并根据记录的编码器信号的个数进行延迟来 产生各个色面的 PD信号。 例如, 假设纸张的运行方向是从第 1色走向第 2色面, 则在 PD 信号的产生过程中, 同一页的 PD信号的产生, 肯定是从第 1 色面开始产生 PD信号。 假 设由 3个编码器信号触发完成 1线数据的打印,第 2色面与第 1色面之间的物理间距为 m, 换算成线数是 n线, 那么, 在第 1色面喷印完 1线数据之后, 必须延迟 n线, 第 2色面才 可以开始进行同一线的喷印, 这个 n线的延迟, 需要 3n个编码器信号触发完成。 也就是 说, 在第 1 色面的 PD信号产生时刻开始记录编码器信号的个数, 当所记录的编码器信号 的个数等于 3n个时, 开始产生第 2色面的 PD信号。 其它色面进行类似的对应于自己的延 迟, 才能够保证多色套印整齐。
因此, 对于连续打印模式, 可逐页按照以下步骤产生各个色面的打印触发信号: 当
MCU电路 3检测到已发送当前页的完整数据到后端系统之后, 产生第 1 色面的打印触发 信号; 从第 1色面的打印触发信号产生的时刻起记录编码器信号的个数, 当所记录的编码 器信号的个数与其余色面中的任何一个相对于第 1色面的物理间距相应时, 产生该色面的 打印触发信号; 从每个色面的打印触发信号的产生时刻起记录编码器信号的个数, 当所记 录的编码器信号的个数与页面长度加上页面间距之和相应时, 重复执行上述步骤以产生下 一页的各个色面的打印触发信号。
对于色标打印模式, 可按照以下步骤逐页产生各个色面的打印触发信号: 当 MCU电 路 3检测到已发送当前页的完整数据到所述后端系统之后, 当接收到第 1个有效的色标信 号之后, 产生第 1色面的打印触发信号; 从第 1色面的打印触发信号产生的时刻起记录编 码器信号的个数, 当所记录的编码器信号的个数与其余色面中的任何一个相对于第 1色面 的物理间距相应时, 产生该色面的打印触发信号; 从每个色面的打印触发信号的产生时刻 起记录编码器信号的个数, 当所记录的编码器信号的个数与页面长度相应时, 重复执行上 述步骤以产生下一页的各个色面的打印触发信号。 这里指出, 对于色标打印模式, 不存在 页面间距的概念。
如图 2所示, PD信号产生模块 26包括 4个 PD信号产生子模块 261 264, 而数据发 送模块 23也同样包括 4个数据发送子模块 231 234。 这一设置, 是为了满足最多 4色的设 计需求, 即最多可以支持 CMYK四色的打印同步。 在少于 4色 (例如, 1色、 2色) 的打 印需求下, FPGA中实际工作的数据发送子模块和 PD信号产生子模块也就会少于 4个。 对于连续打印模式和色标打印模式所不同的是,同一个编码器信号将同时提供给所有的 PD 信号产生子模块使用,而色标传感器信号却是首先提供给第 1个 PD信号产生子模块使用, 由 PD信号产生子模块 1经过一定的处理之后, 才会进而输出给其他几个 PD信号产生子 模块使用。 而多个数据发送子模块之间的关系是并行的。
此外, FPGA电路 2还包括状态反馈模块(未显示), 其将 MCU电路 3查询到的后端 系统的打印状态返回给前端系统。 当 MCU电路 3查询到后端系统已完成一个页面的打印 时, 产生状态信息, 并通过状态反馈模块返回给前端系统。
以下,将参照图 3以基于 XAAR1001喷头的彩色数码喷印设备为例来说明图 2所示的 数码喷印同步控制装置的工作过程。
XAAR1001喷头对一线数据的打印需要 3个编码器信号作为触发信号。 这样, 如果一 页图像的数据, 从 Y方向上来说可以分为 2000线, 那么总共就需要 6000个编码器信号作 为触发信号。
假设需要完成一个多页面作业的打印, 这个作业有 100 页, 而每一页的页面尺寸为 300mm x 500mm, 即, 页面宽度为 300mm, 页面长度为 500mm, 换算成页面点阵的单位, X方向 (即, 宽度方向 ) 以点表示为 4255点, Y方向 (即, 长度方向 ) 以线表示为 7092 线。
如图 3所示, 首先, 在步骤 S301中, MCU电路 3对从数码喷印设备的前端系统接收 的打印命令、 色面参数、 设备参数和打印作业参数 (包括页面尺寸参数 4255和 7092 )进 行解析, 并将解析的设备参数和打印作业参数传递给数据发送子模块 231 234, 将解析的 色面参数(包括第 2、 3、 4个色面与第 1 色面之间的物理间距换算成的相应线数)、 设备 参数和打印作业参数 (包括页面尺寸参数 7092 )发送给 PD信号产生子模块 261 264。 这 里注意, 数据发送模块需要知道打印作业 X方向和 Y方向的大小, 而 PD信号产生模块只 需要知道 Y方向的大小即可。
接着, 在步骤 S302中, MCU电路 3响应于启动打印命令, 根据实际打印所需的色面 数量分配每个色面的存储空间。 例如, 假设存储器电路设置为 512MB , 对于 4色打印, 每 个色面可以分配 128MB的存储空间。 MCU电路 3完成存储空间的分配之后 , 将每个色面 对应的存储空间的起始地址和结束地址写入到 FPGA的寄存器中。
接着,在步骤 S303中, 当 MCU电路 3检测到为各个色面所分配的存储空间足够空闲 时, 启动接收模块 21从前端系统逐页接收各个色面的数据并存储到相应的存储空间中。
接着, 在步骤 S304中, 当 MCU电路 3检测到存储有一页完整数据时, 启动数据发送 子模块 231 234, 根据解析的打印作业参数和设备参数确定该页的各个色面的数据发送的 起始时刻和结束时刻 (具体来讲, 根据页面长度和宽度以及设备最大可喷印宽度来确定 X 方向和 Y方向上数据发送的起始时刻和结束时刻), 并根据确定的起始时刻和结束时刻将 存储的该页的各个色面的数据发送到数码喷印设备的后端系统。
接着, 在步骤 S305中, 当 MCU电路 3检测到已发送完一页数据到后端系统之后, 启 动 PD信号产生模块 26根据数码喷印设备外围的编码器和 /或色标传感器的信号和解析的 打印作业参数、 设备参数和色面参数产生各个色面的打印触发信号发送到后端系统。
例如, 假设第 2色面相对于第 1 色面的物理间距是 3000线, 打印模式为连续打印模 式。 如上所述, 编码器随机械轴承旋转一周, 可以产生若千个脉冲信号, 这个脉冲信号输 入 FPGA之后, 由 FPGA内部的编码器输入信号处理模块 24进行例如 1 μ s的滤波, 滤波 之后 (可能还需要分频倍频处理) 的信号作为有效的编码器信号, 提供给 PD信号产生子 模块 261 264, 作为图像打印线数和延迟线数的基本触发单位和统计单位。
当 MCU电路 3检测到已发送当前页的完整数据到后端系统之后, PD信号产生子模块
261产生第 1 色面的打印触发信号。 然后, 从产生第 1 色面的 PD信号的时刻起记录编码 器信号的个数, 当所记录的编码器信号的个数达到 9000线, 即, 延迟完 3000线之后, PD 信号产生子模块 262产生同一页的第 2色面的 PD信号。 同样, 第 3色面和第 4色面也在 做完自己的延迟之后, PD信号产生子模块 263和 264产生同一页的第 3 色面和第 4色面 的 PD信号。 后端系统接收到各个色面的 PD信号之后, 分别完成各个色面的打印, 这样 就完成了一页完整的 4色图像的套印。 而且, 每个色面在产生完一页的 PD信号之后, 开 始从 0记录编码器信号的个数, 直到计算到编码器信号的个数等于页面长度 7092线的 3 倍的时候, 认为这一页打印完成, 接着通过记录编码器信号的个数, 走完页面间距, 然后 产生下一页的 PD信号, 同时记录编码器个数的计数器清零, 重新开始记录。 如此往复, 便完成了这个 100页作业的打印。
在色标打印模式下, 色标传感器釆集到承印物上的 1个色标之后, 即产生 1个脉冲信 号, 通过 FPGA内部的色标输入信号处理模块 25的滤波处理之后 , 作为有效的色标信号, 提供给 PD信号产生子模块 261。这里之所以将处理之后的色标信号仅传输给 PD产生子模 块 261 , 而不是像编码器信号一样, 直接传输给所有的 PD信号产生子模块, 是因为在承 印物上, 可能会在一次印刷的时候, 已经连续印刷上去很多个色标信号, 而色标模式下的 数据打印过程, 实际上是数码喷印和一次印刷的结合使用。 在本发明涉及到的数码喷印设 备的工作过程中, 并不是承印物上的每一个色标信号都用来触发产生 PD。 本发明中, 后 端系统接收到一个 PD, 即认为是一张纸的到来, 就进行一页图像数据的打印。 但是一页 图像的页长, 可能并不是和承印物上的色标间距完全对应, 那么就可能出现要打印的一页 图像的页面长度比实际的色标间距大的情况。 在一页图像的页面长度比实际色标间距小的 时候, 自然可以釆集到一个色标信号, 即产生一个 PD信号, 触发一页的打印。 但是如果 一页图像的页面长度比实际的色标间距大, 或者是实际色标间距的好几倍的时候, 就需要 对所釆集到的色标信号进行处理, 有的产生 PD信号, 有的不产生 PD信号。 因此, 色标 输入信号处理模块 25将所有釆集到的色标信号都进行处理,然后输出给 PD信号产生子模 块 261 , 由该子模块来完成色标信号的选择, 判断哪些色标信号需要产生 PD, 而哪些色标 信号不需要产生 PD ,进而将需要产生 PD的色标信号传输给其它几个 PD信号产生子模块。 其它子模块所接收到的色标信号, 都是需要产生 PD的有效色标信号, 所以直接进行延迟 和产生 PD即可。
同样, 例如, 对于上述作业 1 , 釆用色标打印模式。 当 MCU电路 3检测到已发送当 前页的完整数据到后端系统之后, PD信号产生子模块 261 264开始工作, 但是此时并不 开始产生 PD信号, 而是等待 PD信号产生子模块 261接收到第 1个有效的色标信号之后, 开始产生第 1 色面的 PD信号, 并通知其它 3个 PD信号子模块 262 264已经产生了 1个 PD信号。 与连续打印模式相同, 其它 3个子模块在各自做完相应色面的延迟之后, 产生 属于自己色面的 PD信号。 各个子模块在产生完 PD信号之后, 同样通过记录编码器信号 的个数, 来判断 1页数据是否打印完成。 如果 PD信号产生子模块 261在打印 1页的过程 中, 又收到了色标信号, 则直接丢掉。 与连续打印模式不同的是, PD信号产生子模块 261 在判断到 1页已经打印完成之后 (即, 从各个色面的 PD信号产生时刻起记录的编码器信 号的个数等于页面长度 7092线的 3倍时), 不是紧接着立即产生下一个 PD, 而是等待到 1 个新的色标信号之后, 才会产生 PD, 然后再通知后续三个色面进行延迟和一个新的 PD的 产生。 而且, 如上所述, 在色标打印模式下, 不存在页面间距的概念。 当最后一个色面的 最后一页打印完成的时候, 通过 MCU电路 3产生状态信息, 返回给前端系统, 这个 100 页的作业已经打印完成。
在步骤 S305 中将产生的各个色面的 PD信号发送到后端系统进行打印之后, 在步骤
S306 中, 判断当前页是否是最后一页, 如果是, 则结束打印, 否则跳转到步骤 S303 , 重 复以上步骤, 进行下一页的数据发送和打印。
这里指出, 步骤 S303和步骤 S304是并行执行的, 具体来讲, 在向后端系统发送数据 的同时, MCU电路 3仍然会持续判断存储器电路 1 中是否有足够的空间接收前端系统的 数据, 如果空间足够, 则同时会启动 FPGA电路 2继续向前端系统请求数据。
如果在打印这个作业的过程中, 又收到了一个新的页面尺寸相同的作业打印的任务, 由于是相同尺寸的页面, 各个参数不需要做任何更新, 直接发送数据, 保证打印的连续性 即可。 只需要在上一个作业完成的时候, 走完前端系统所要求的作业间距, 再进行下一个 作业的打印即可。
以上已对多色面相同尺寸页面连续打印的同步控制方法进行了描述, 以下将对多色面 不同尺寸页面的连续打印的同步控制方法进行说明。
例如, 打印完一个 300mm*500mm的作业之后, 紧接着要打印一个 250mm*400mm的 作业。 此时, 从整个打印流程上来看, 仍然是 4色的打印同步, 所不同的是, 在打印过程 中, 页面尺寸发生了变化, 即下一个打印作业的尺寸和上一个打印作业的尺寸完全不同, 由于要求是连续性打印, 因此, 需要从图像尺寸的参数应用方面入手进行考虑。据上所述, 对于图像尺寸参数的应用, 主要是在两个环节。
一个环节是在数据发送模块 23 向后端系统发送每一页图像数据的过程中, 各个数据 发送子模块 231 234会根据每一页图像的尺寸, 来判断该页图像数据在 X方向和 Y方向 的起始时刻和结束时刻。 数据发送模块 23是通过 MCU电路 3获得每一页图像的尺寸的, 而 MCU电路 3可直接查询接收数据的状态, 或者在接收到前端系统发送下来的一个作业 的启动打印命令的同时接收到这个作业的各个参数。 可在数据发送子模块中设置相应的寄 存器, 用来记录页面尺寸的参数。 每当 MCU电路 3启动一个数据发送子模块向后端系统 发送一页图像的一色数据的时候, MCU电路 3便向该数据发送子模块写入一次所要发送 页面的尺寸参数, 该数据发送子模块可将这组参数写入到对应的寄存器中, 在数据发送过 程中进行判断, 这样就保证了不同尺寸页面数据发送的正确性。
另一个环节是 PD信号产生模块 26在产生 PD信号的过程中,会根据图像 Y方向上的 线数, 来判断一页是否完成打印, 是否需要开始产生下一页的 PD信号。 由于各个子模块 都是在产生一个 PD之后, 进行与页面长度对应的延迟, 然后再产生下一个 PD , 那么也就 需要各个子模块在产生一个 PD的同时, 明确知道当前页面的页面长度尺寸。 可釆用在 PD 信号产生模块中设置相应的緩存的方法, MCU电路 3将已经发送给后端系统的每一页的 页面长度写入到这个緩存中, 各个 PD信号产生子模块对应一个同样的緩存。 这样, 在每 个子模块产生一个 PD的同时, 从緩存中读取一个对应的页面长度参数, 即可保证 PD产 生之后的准确延迟。
综上所述, 本发明的关键点有两个: 一个是多色之间的同步, 一个是连续打印过程中 页面尺寸的变化控制。 在保证多色同步即套印整齐的基础上, 准确适时地控制好页面尺寸 的变化, 即可保证打印的正确性和连续性。
通过以上技术方案, 本发明实施例针对数码喷印设备的实时喷印的控制特点, 主要釆 用 MCU电路和 FPGA电路相结合的方式, 结合外围存储器电路, 完成对多色面打印的同 步控制, 实现了多色面的不同尺寸页面的连续打印, 实时性好, 同步控制精度高。 在保证 打印速度的前提下, 能够在打印过程中即完成整个同步过程和页面尺寸的变换, 并且覆盖 连续打印模式和色标打印模式两种方式。 并且由于 FPGA电路部分的设计合理, 大大减少 了硬件资源的消耗, 降低了成本。 对于实际的工业生产来说, 有效地提高了生产效率, 减 小了对生产介盾的浪费。
以上已参照附图和实施例对本发明进行了详细描述, 但是, 应该理解, 本发明并不限 于以上所公开的具体实施例, 任何基于本说明书所公开的技术方案的变型都应包括在本发 明的保护范围内。 例如, 还可以以软件的形式或者其它硬件形式实现本发明的数码喷印同 步控制方法, 并将所实现的软件程序代码或硬件嵌入到数码喷印设备的适当系统中。
本领域普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通 过程序来指令相关的硬件完成, 所述的程序可以存储于一种计算机可读存储介盾中, 该程 序在执行时, 包括方法实施例的步骤之一或其组合。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理模块中, 也可以是各 个单元单独物理存在, 也可以两个或两个以上单元集成在一个模块中。 上述集成的模块既 可以釆用硬件的形式实现, 也可以釆用软件功能模块的形式实现。 所述集成的模块如果以 软件功能模块的形式实现并作为独立的产品销售或使用时, 也可以存储在一个计算机可读 取存储介盾中。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程序产 品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实 施例的形式。 而且, 本发明可釆用在一个或多个其中包含有计算机可用程序代码的计算机 可用存储介盾 (包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形 式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产品的流程图 和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流 程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个 方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能的步骤。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和 范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种数码喷印同步控制装置, 包括:
存储单元, 其用于存储各个色面的数据;
控制单元, 其用于控制交互处理单元执行所述数据接收、 存储、 发送以及打印触发信 号产生;
交互处理单元, 其用于在控制单元的控制下, 从数码喷印设备的前端系统接收各个色 面的数据、 将接收的数据存储到存储单元中、 将存储的数据发送到数码喷印设备的后端系 统、根据数码喷印设备外围的编码器和 /或色标传感器的信号产生各个色面的打印触发信号 发送到数码喷印设备的后端系统。
2、 根据权利要求 1所述的装置, 其特征在于, 所述控制单元按照以下步骤进行控制: 对通过接收模块接收的命令和参数进行解析, 并将解析的打印作业参数和设备参数传 递给交互处理单元, 将解析的打印作业参数、 设备参数和色面参数传递给交互处理单元; 响应于启动打印命令, 根据色面数量分配存储单元中每个色面的存储空间; 当检测到存储单元中为各个色面所分配的存储空间足够空闲时, 启动交互处理单元从 所述前端系统逐页接收各个色面的数据并存储到存储单元中的相应存储空间中;
当检测到存储单元中存储有完整的一页数据时, 启动交互处理单元根据控制单元解析 的打印作业参数和设备参数确定该页的各个色面的数据发送的起始时刻和结束时刻, 并根 据确定的起始时刻和结束时刻将存储单元中存储的该页的各个色面的数据发送到数码喷 印设备的后端系统;
当检测到已发送一页数据到所述后端系统之后, 启动交互处理单元根据控制单元解析 的打印作业参数、 设备参数和色面参数产生各个色面的打印触发信号发送到数码喷印设备 的后端系统。
3、 根据权利要求 2所述的装置, 其特征在于, 所述交互处理单元包括:
接收模块, 其用于从所述前端系统接收打印命令、 色面参数、 设备参数和打印作业参 数, 并将接收的命令和参数发送给控制单元进行解析, 其中, 所述打印命令包括启动打印 命令、 取消打印命令, 所述色面参数包括每个色面相对于第 1色面的物理间距, 所述设备 参数包括数码喷印设备的最大喷印有效宽度, 所述打印作业参数包括打印作业所需配置的 色面数量、 打印作业的页面长度、 宽度、 页数、 单作业内的页面间距、 打印作业之间的间 距; 当控制单元检测到存储单元中为各个色面所分配的存储空间足够空闲时, 从所述前端 系统逐页接收各个色面的数据, 并根据时序控制将接收的数据存储到存储单元中的相应存 储空间中;
数据发送模块, 其用于当控制单元检测到存储单元中存储有完整的一页数据时, 根据 控制单元解析的打印作业参数和设备参数确定该页的各个色面的数据发送的起始时刻和 结束时刻, 并根据确定的起始时刻和结束时刻将存储单元中存储的该页的各个色面的数据 发送到数码喷印设备的后端系统;
编码器输入信号处理模块和 /或色标输入信号处理模块,所述编码器输入信号处理模块 用于对通过编码器输入的编码器信号进行滤波和分频倍频处理, 所述色标输入信号处理模 块用于对通过色标传感器输入的色标信号进行滤波处理;
打印触发信号产生模块, 其用于当控制单元检测到已发送一页数据到所述后端系统之 后,根据编码器输入信号处理模块和 /或色标输入信号处理模块处理的信号和控制单元解析 的打印作业参数、 设备参数和色面参数产生各个色面的打印触发信号。
4、 根据权利要求 3 所述的装置, 其特征在于, 所述打印触发信号产生模块按照以下 步骤逐页产生各个色面的打印触发信号:
当控制单元检测到已发送当前页的完整数据到所述后端系统之后, 产生第 1色面的打 印触发信号;
从第 1色面的打印触发信号产生的时刻起记录编码器信号的个数, 当所记录的编码器 信号的个数所对应的延迟线数与其余色面中的任何一个色面相对于第 1色面的物理间距所 对应的线数相一致时, 产生该色面的打印触发信号;
从每个色面的打印触发信号的产生时刻起记录编码器信号的个数, 当所记录的编码器 信号的个数所对应的延迟线数与页面长度加上页面间距之和所对应的线数相一致时, 重复 执行上述步骤以产生下一页的各个色面的打印触发信号。
5、 根据权利要求 3 所述的装置, 其特征在于, 所述打印触发信号产生模块按照以下 步骤逐页产生各个色面的打印触发信号:
当控制单元检测到已发送当前页的完整数据到所述后端系统之后, 当接收到第 1个有 效的色标信号之后, 产生第 1色面的打印触发信号;
从第 1色面的打印触发信号产生的时刻起记录编码器信号的个数, 当所记录的编码器 信号的个数所对应的线数与其余色面中的任何一个色面相对于第 1色面的物理间距所对应 的线数相一致时, 产生该色面的打印触发信号;
从每个色面的打印触发信号的产生时刻起记录编码器信号的个数, 当所记录的编码器 信号的个数所对应的延迟线数与页面长度所对应的线数相一致时, 重复执行上述步骤以产 生下一页的各个色面的打印触发信号。
6、 根据权利要求 1~5 中的任何一个所述的装置, 其特征在于, 利用微控制单元电路 实现所述控制单元, 利用现场可编程门阵列电路实现所述交互处理单元, 利用存储器电路 实现所述存储单元。
7、 一种数码喷印同步控制方法, 包括:
对从数码喷印设备的前端系统接收的打印命令、 色面参数、 设备参数和打印作业参数 进行解析, 所述打印命令包括启动打印命令、 取消打印命令, 所述色面参数包括每个色面 相对于第 1色面的物理间距, 所述设备参数包括数码喷印设备的最大喷印有效宽度, 所述 打印作业参数包括打印作业所需配置的色面数量、 打印作业的页面长度、 宽度、 页数、 单 作业内的页面间距、 打印作业之间的间距;
响应于启动打印命令, 根据色面数量分配每个色面的存储空间;
当检测到为各个色面所分配的存储空间足够空闲时, 从所述前端系统逐页接收各个色 面的数据并存储到相应的存储空间中;
当检测到存储有一页完整数据时, 根据解析的打印作业参数和设备参数确定该页的各 个色面的数据发送的起始时刻和结束时刻, 并根据确定的起始时刻和结束时刻将存储的该 页的各个色面的数据发送到数码喷印设备的后端系统;
当检测到已发送一页数据到所述后端系统之后, 根据数码喷印设备外围的编码器和 / 或色标传感器的信号和解析的打印作业参数、 设备参数和色面参数产生各个色面的打印触 发信号发送到数码喷印设备的后端系统。
8、 根据权利要求 7所述的方法, 其特征在于, 进一步包括:
对通过编码器输入的编码器信号进行滤波和分频倍频处理, 对通过色标传感器输入的 色标信号进行滤波处理, 得到消除毛刺的有效的编码器信号。
9、 根据权利要求 7 所述的方法, 其特征在于, 按照以下步骤逐页产生各个色面的打 印触发信号:
当检测到已发送当前页的完整数据到所述后端系统之后, 产生第 1色面的打印触发信 号;
从第 1色面的打印触发信号产生的时刻起记录编码器信号的个数, 当所记录的编码器 信号的个数所对应的延迟线数与其余色面中的任何一个色面相对于第 1色面的物理间距所 对应的线数相一致时, 产生该色面的打印触发信号;
从每个色面的打印触发信号的产生时刻起记录编码器信号的个数, 当所记录的编码器 信号的个数所对应的延迟线数与页面长度加上页面间距之和所对应的线数相一致时, 重复 执行上述步骤以产生下一页的各个色面的打印触发信号。
10、 根据权利要求 7所述的方法, 其特征在于, 按照以下步骤逐页产生各个色面的打 印触发信号:
当检测到已发送当前页的完整数据到所述后端系统之后, 当接收到第 1个有效的色标 信号之后, 产生第 1色面的打印触发信号;
从第 1色面的打印触发信号产生的时刻起记录编码器信号的个数, 当所记录的编码器 信号的个数所对应的延迟线数与其余色面中的任何一个色面相对于第 1色面的物理间距所 对应的线数相一致时, 产生该色面的打印触发信号; 从每个色面的打印触发信号的产生时刻起记录编码器信号的个数, 当所记录的编码器 信号的个数所对应的延迟线数与页面长度所对应的线数相一致时, 重复执行上述步骤以产 生下一页的各个色面的打印触发信号。
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