CN115230295B - Offset printing method, device, equipment, system and computer readable storage medium - Google Patents

Offset printing method, device, equipment, system and computer readable storage medium Download PDF

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Publication number
CN115230295B
CN115230295B CN202210918552.5A CN202210918552A CN115230295B CN 115230295 B CN115230295 B CN 115230295B CN 202210918552 A CN202210918552 A CN 202210918552A CN 115230295 B CN115230295 B CN 115230295B
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current
image
printing
acquiring
pressure
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CN115230295A (en
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王俊逸
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Beijing Xiangchen Weiye Technology Development Co ltd
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Beijing Xiangchen Weiye Technology Development Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/20—Administration of product repair or maintenance
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
    • G06V10/77—Processing image or video features in feature spaces; using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]; Blind source separation
    • G06V10/774—Generating sets of training patterns; Bootstrap methods, e.g. bagging or boosting
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
    • G06V10/82—Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

The application relates to an offset printing method, a device, equipment, a system and a computer readable storage medium, relating to the printing field, wherein the method comprises the following steps: acquiring a current printing image on a printing stock; inputting the current printed image into an image recognition model; and acquiring a current recognition result output by the image recognition model, and generating an adjustment strategy based on the current recognition result. The application has the effect of reducing the error of judging the adjustment of the installation parameters in the offset printing machine.

Description

Offset printing method, device, equipment, system and computer readable storage medium
Technical Field
The present application relates to the field of printing, and more particularly, to an offset printing method, apparatus, device, system, and computer readable storage medium.
Background
Offset printing is one form of printing in the printing arts, and a typical offset printer includes a printing unit including an offset printing plate, a blanket cylinder, and a platen. In the printing process, it is necessary to first produce a printing plate on the surface of a plate material, then roll the printing plate and offset a printing plate, which transfers ink supplied to the plate surface to a blanket of a blanket cylinder, and print a substrate between the blanket and a platen.
In the use process of the offset printing machine, the setting of installation parameters in the offset printing machine is unreasonable, and the printing effect on a printing stock is easy to be poor. In the related art, when the printing effect on the printing object is poor, a worker is required to adjust the installation parameter setting in the offset printing machine through the printing effect by experience, and the error in adjustment by the worker with insufficient experience is high, so that an offset printing scheme with high adjustment accuracy is needed.
Disclosure of Invention
In order to improve accuracy of adjustment of mounting parameters in an offset printing machine, the present application provides an offset printing method, apparatus, device, system and computer readable storage medium.
In a first aspect, the present application provides an offset printing method, which adopts the following technical scheme:
a method of offset printing comprising:
acquiring a current printing image on a printing stock;
inputting the current printed image into an image recognition model;
and acquiring a current recognition result output by the image recognition model, and generating an adjustment strategy based on the current recognition result.
By adopting the technical scheme, the printing effect of the printing stock is judged according to the current identification result, and the corresponding adjustment strategy is generated according to the identification result, so that the error of judging the adjustment of the installation parameters in the offset printing machine is reduced.
Optionally, if the current recognition result is not clear, generating the adjustment policy based on the current recognition result includes:
acquiring current pressure data between current printing components;
and acquiring a pressure adjustment strategy of the current pressure data based on the current identification result, wherein the pressure adjustment strategy comprises a target pressure value.
Optionally, the acquiring the pressure adjustment policy of the current pressure data based on the current identification result, where the pressure adjustment policy includes a target pressure value including:
judging whether a first pressure value which corresponds to the current identification result and is adjusted by the current pressure data exists in a local strategy storage library;
if not, receiving a second pressure value sent by other strategy storages sent by the server, and when the identification result is the same as the current identification result, other offset printers pass the printing of the image after adjusting the pressure data to the second pressure value;
and taking the second pressure value as the target pressure value and storing the second pressure value to the local strategy storage library.
By adopting the technical scheme, the current pressure data can be adjusted according to the adjustment strategies stored in other strategy storage libraries, so that the possibility that the identification result is still unqualified after the current pressure data are adjusted for many times is reduced.
Optionally, if the current recognition result is that the printing ink is not cured, generating the adjustment policy based on the current recognition result further includes:
if the electron beam irradiation assembly does not swing, generating swing angle information of the electron beam irradiation assembly based on the printing pattern;
and sending the swing angle information to the electron beam irradiation assembly.
By adopting the technical scheme, the electron beam irradiation assembly swings, so that the irradiation area of the electron beam irradiation assembly is changed, the electron beam irradiation assembly swings along with the conveying of the printing pattern, the irradiation time of the electron beam irradiation piece on the printing pattern is prolonged, the uncured possibility of printing ink is reduced, and the printing qualified speed is improved.
Optionally, the method further comprises:
acquiring the current times of uncured printing ink;
acquiring the equipment grade of the current offset printer, and acquiring a frequency threshold value based on the equipment grade;
and if the current times are not smaller than the times threshold, sending alarm information to a preset terminal.
By adopting the technical scheme, the alarm information is sent to the preset terminal to alarm, so that an maintainer can overhaul the corresponding offset printing machine in time. By dividing the different times threshold according to the offset printing machine, the maintenance personnel can carry out maintenance on the equipment with higher grade level more quickly.
Optionally, before the current printed image is input into the image recognition model, the method further includes:
acquiring image sample data, wherein the image sample data comprises a printed unclear image and a printed ink uncured image;
constructing an image feature network model based on the image sample data;
training the image feature network model based on the image sample data to obtain a trained image recognition model;
and identifying the printing effect of the current printing image based on the trained image identification model.
In a second aspect, the present application provides an offset printing apparatus applied to the first aspect, which adopts the following technical scheme:
an offset printing apparatus comprising:
the first acquisition module is used for acquiring a current printing image on a printing object;
the input module is used for inputting the current printing image into an image recognition model;
and the acquisition generation module is used for acquiring the current recognition result output by the image recognition model and generating an adjustment strategy based on the current recognition result.
In a third aspect, the present application provides an electronic device, which adopts the following technical scheme:
an electronic device comprising a memory and a processor, said memory having stored thereon a computer program capable of being loaded by said processor and executing the offset printing method as described above.
In a fourth aspect, the present application provides an offset printing system, which adopts the following technical scheme:
an offset printing system comprising a current printing assembly of a current offset printer, an electron beam irradiation assembly, a print image capturing element, and the electronic device of the third aspect;
the printing image shooting piece is used for shooting a printing image on the printing stock and sending shot printing image data to the electronic equipment;
and the electronic equipment processes the multi-user printing image data and controls the current printing assembly or the electron beam irradiation assembly to adjust based on the processing result.
In a fifth aspect, the present application provides a computer readable storage medium, which adopts the following technical scheme:
a computer readable storage medium storing a computer program capable of being loaded by a processor and executing the method of the first aspect.
Drawings
Fig. 1 is a schematic flow chart of an offset printing method according to an embodiment of the present application.
Fig. 2 is a block diagram showing the construction of an offset printing apparatus according to an embodiment of the present application.
Fig. 3 is a block diagram of an electronic device according to an embodiment of the present application.
Fig. 4 is a block diagram of an offset printing system according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
The embodiment of the application provides an offset printing method which can be executed by equipment, wherein the equipment can be a server or an electronic device, the server can be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, and a cloud server for providing cloud computing service. The electronic device may be a desktop computer or the like, but is not limited thereto.
As shown in fig. 1, an offset printing method, the main flow of which is described as follows (steps S101 to S103):
step S101: acquiring a current printing image on a printing stock;
current offset printing presses include a print image capture that is mounted in a channel of the substrate after printing by the current offset printing press is completed. In this embodiment, the print image capturing element is a camera, and the printed object is captured by the camera, so as to capture the print image on the object.
Because the light is weaker in the conveying channel of the printing stock, in order to ensure the shooting quality of the camera, an illuminating lamp is further arranged in the channel of the printing stock, and the printing stock in the shooting range of the camera is illuminated through the illuminating lamp, so that the shooting effect of the camera on the printing image is improved.
The current offset printing machine still includes printing unit, and printing unit includes offset printing plate, blanket cylinder and pressure section of thick bamboo, and offset printing plate, blanket cylinder and pressure section of thick bamboo are connected with its pivoted driving motor of drive respectively, and driving motor is connected with the encoder respectively, and the encoder that the blanket cylinder corresponds is used for gathering blanket cylinder pivoted displacement volume. After the printing ink on the blanket cylinder is contacted with the printing stock on the pressing cylinder, the encoder corresponding to the blanket cylinder collects the displacement of the printing pattern, and the displacement of the printing pattern comprises a first current displacement used for representing the displacement of the front end of the pattern and a second current displacement used for representing the displacement of the tail end of the pattern because the printing pattern has a certain extension length along the conveying channel.
The contact surface between the rubber plate roller and the pressing cylinder is positioned on the same plane with the conveying bottom surface of the conveying channel, and the shooting range of the camera is the length of a certain channel corresponding to the inside of the conveying channel. The distance between the contact surface between the channel close to the rubber plate roller side and the rubber plate roller and between the rubber plate roller and the pressing cylinder in the shooting range of the camera is a first distance; the distance between the contact surface between the channel far away from the rubber plate roller side and the rubber plate roller and the pressing cylinder in the shooting range of the camera is a second distance; it will be readily appreciated that the first distance amount and the second distance amount are both known values that can be measured by a tool such as a ruler, and that the second distance amount is greater than the first distance amount.
In this embodiment, after the printing ink on the blanket cylinder contacts the printing stock on the platen, step S101 further includes the following steps: acquiring a first current displacement and a second current displacement acquired by an encoder corresponding to a rubber cloth roller; comparing the first current displacement amount with a first distance amount; if the first current displacement is equal to the first distance, the printed pattern of the printing stock enters the shooting range of the camera, and the lighting lamp is controlled to be turned on; comparing the second current displacement amount with a second distance amount; if the second current displacement is equal to the second distance, the printed pattern of the printing stock leaves the shooting range of the camera, and the lighting lamp is controlled to be turned off.
Therefore, when the printing pattern on the printing stock passes through the shooting range of the camera, the camera can clearly shoot the printing pattern, and when the printing pattern is continuously transmitted to the shooting range which is completely separated from the camera, the illuminating lamp is controlled to be closed, so that the loss of energy sources is reduced.
In this embodiment, the offset printing method further includes construction of an image recognition model, and therefore, the method further includes the following processes: acquiring image sample data, wherein the image sample data comprises a printed unclear image and a printed ink uncured image; constructing an image feature network model based on the image sample data; training an image characteristic network model based on the image sample data to obtain a trained image recognition model; and identifying the printing effect of the current printing image based on the trained image identification model.
Step S102: inputting the current printed image into a constructed image recognition model;
step S103: and acquiring a current recognition result output by the image recognition model, and generating an adjustment strategy based on the current recognition result.
In this embodiment, the current recognition result includes a recognition pass and a recognition fail, where the recognition pass is clear print pattern, the print ink is cured, the recognition fail is unclear print or the print ink is uncured, and the unclear print includes shallow print pattern, deformed print pattern, thickened print, dot merging and pasting.
Two cases of failed recognition are explained below:
if the current recognition result is that the printing is unclear, step S103 includes:
step S1031: acquiring current pressure data between current printing components;
the current pressure data includes pressure data between the flexographic printing plate and the blanket cylinder, and pressure data between the blanket cylinder and the platen. In order to allow the blanket cylinder plate to be coated with a print pattern that is transferred to the surface of the substrate in a clear manner, an appropriate printing pressure is required, and in the same manner, an appropriate printing pressure is required to allow the print pattern on the offset printing plate to be transferred cleanly to the blanket cylinder surface.
When the pressure between the flexographic printing plate and the blanket cylinder is insufficient, the flexographic printing plate and the blanket cylinder are not in sufficiently reliable contact with each other, and thus the transferred printing pattern on the blanket cylinder becomes shallow, affecting the definition of the image.
When the pressure between the blanket cylinder and the pressing cylinder is insufficient, the blanket cylinder and the pressing cylinder are not in contact sufficiently and reliably, so that the transferred printed pattern on the printing stock becomes shallow, and the definition of the image and text is affected.
When the pressure between the blanket cylinder and the pressing cylinder is too high, the excessive printing pressure can deform the printing pattern of the printing stock, thicken the print, and grade and paste the dots, and the definition of the image and text can be affected, and meanwhile, the abrasion of the blanket cylinder can be increased.
Step S1032: and acquiring a pressure adjustment strategy of the current pressure data based on the current identification result, wherein the pressure adjustment strategy comprises a target pressure value.
In this embodiment, step S1032 further includes the following processing: judging whether a first pressure value which is adjusted by the current pressure data and corresponds to the current identification result exists in the local strategy storage library; if not, receiving a second pressure value sent by other strategy storages sent by the server, wherein the second pressure value is a pressure adjustment value which is qualified in printing images after pressure adjustment when the identification result and the pressure data of other offset printers are respectively the same as the current identification result and the current pressure data; the second pressure value is taken as a target pressure value and stored to a local policy store.
The local strategy storage library stores first pressure values of current pressure data corresponding to various current identification results, wherein the specific identification results in unclear printing and the first pressure values after the current pressure data are adjusted are in a mapping relation.
Other offset printing machines communicating with the server are respectively corresponding to other strategy storage libraries, the other strategy storage libraries are respectively stored with second pressure values of pressure data corresponding to a plurality of different recognition results, and when the recognition results are the same as the current recognition results, the other offset printing machines print qualified images after adjusting the pressure data to the second pressure values. Therefore, the current pressure data can be adjusted according to the adjustment strategies stored in other strategy storages, and the possibility that the identification result is still unqualified after the current pressure data are adjusted for many times is reduced.
If the current recognition result is that the printing ink is not cured, step S103 includes:
step S1033: if the electron beam irradiation assembly does not swing, generating swing angle information of the electron beam irradiation assembly based on the printing pattern;
in this embodiment, the electron beam irradiation assembly includes an electron beam irradiation member and a rotation driving member, the ink of the printed pattern is electron beam curable ink, and the electron beam irradiation member is used for irradiating the ink of the printed pattern to cure the ink.
The rotation driving member is a driving member for driving the electron beam irradiation member to swing along the conveying channel, in this embodiment, the rotation driving member may be a servo motor, and the electron beam irradiation member is driven to swing by the servo motor, so as to change an irradiation area of the electron beam irradiation member. Wherein the initial state of the electron beam irradiator is not swung.
The servo motor drives the electron beam irradiation piece to swing in a range corresponding to the channel section on the conveying channel, and coordinate points corresponding to the channel section can be stored. When the distance between two adjacent printed patterns on the printing stock is larger than the length of the maximum channel section, the servo motor can drive the electron beam irradiation piece to drive to the maximum angle.
When each printed pattern on the printing stock enters the channel section irradiated by the electron beam irradiation piece, the electron beam irradiation piece is positioned at one end, close to the pressing cylinder, of the channel section.
In this embodiment, the encoder corresponding to the blanket cylinder may be used to collect the position of the printing pattern on the substrate for conveying, so as to determine whether the conveying position is located in the channel section.
For example, when a first printed pattern on a printing stock is conveyed into the channel section, the electron beam irradiation piece irradiates the first printed pattern, and the electron beam irradiation piece swings along with the conveying of the first printed pattern, so that the irradiation time of the electron beam irradiation piece on the first printed pattern is prolonged, the uncured possibility of printing ink is reduced, and the printing pass speed is improved; before the second printed pattern on the printing stock is conveyed into the channel section, the servo motor drives the electron beam irradiation piece to swing to the initial position.
In this embodiment, the swing angle information may be selected according to the print pattern condition, that is, the pitch between adjacent print patterns. The distance between the adjacent printed patterns and the swing angle information are in a mapping relation, and when the distance between the adjacent printed patterns is larger, the swing angle is larger until the swing angle reaches the maximum swing angle.
Step S1034: the swing angle information is transmitted to the electron beam irradiating assembly.
The rotation driving piece in the electron beam irradiation assembly drives the electron beam irradiation piece to swing and irradiate the printing pattern according to the swing angle information.
In this embodiment, the method further includes the following steps: acquiring the current times of uncured printing ink; acquiring the equipment grade of the current offset printer, and acquiring a frequency threshold value based on the equipment grade; and if the current times are not less than the times threshold, sending alarm information to a preset terminal.
The offset printing machine is provided with equipment grades according to the importance degree of the equipment, the equipment grades are in one-to-one correspondence with the frequency threshold, and the equipment grades are inversely proportional to the frequency threshold. For example, the equipment levels include a first level, a second level, and a third level, wherein the first level of offset printing presses is most important and the third level of offset printing presses is least important. The first level corresponds to three times of frequency thresholds, the second level corresponds to six times of frequency thresholds, and the third level corresponds to nine times of frequency thresholds.
The preset terminal is a terminal device such as a mobile phone and a computer of a preset equipment maintainer, and when the current times reach a time threshold, alarm information is sent to the preset terminal to alarm, so that the maintainer can overhaul the corresponding offset printing machine in time. By dividing the different times threshold according to the offset printing machine, the maintenance personnel can carry out maintenance on the equipment with higher grade level more quickly.
In the debugging process after the installation of the offset printing machine, the printing effect needs to be checked. The recognition result is that unqualified printing stock can be recycled in the debugging process, so that the waste of the printing stock is reduced, and the environmental protection of the offset printing machine is improved.
As shown in fig. 2, the present application also provides an offset printing apparatus, based on the same technical concept, which offset printing apparatus 200 mainly includes:
a first obtaining module 201, configured to obtain a current printed image on a printing object;
an input module 202 for inputting a current printed image into the image recognition model;
the acquisition generation module 203 is configured to acquire a current recognition result output by the image recognition model, and generate an adjustment policy based on the current recognition result.
Optionally, if the current recognition result is that the printing is unclear, the obtaining generating module 203 includes:
the first acquisition sub-module is used for acquiring current pressure data between current printing components;
and the second acquisition sub-module is used for acquiring a pressure adjustment strategy of the current pressure data based on the current identification result, wherein the pressure adjustment strategy comprises a target pressure value.
Optionally, the second obtaining sub-module further includes:
the judging sub-module is used for judging whether a first pressure value which is adjusted by the current pressure data and corresponds to the current identification result exists in the local strategy storage library;
the receiving sub-module is used for receiving the second pressure value sent by other strategy storage libraries sent by the server, and when the identification result is the same as the current identification result, other offset printers print qualified images after adjusting the pressure data to the second pressure value;
and the storage sub-module is used for taking the second pressure value as a target pressure value and storing the second pressure value into the local strategy storage library.
Optionally, if the current identification result is that the printing ink is not cured, the obtaining and generating module 203 includes:
a generating sub-module for generating swing angle information of the electron beam irradiating assembly based on the printing pattern when the electron beam irradiating assembly does not swing;
and the transmitting sub-module is used for transmitting the swing angle information to the electron beam irradiation assembly.
In one example, a module in any of the above apparatuses may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (application specific integratedcircuit, ASIC), or one or more digital signal processors (digital signal processor, DSP), or one or more field programmable gate arrays (field programmable gate array, FPGA), or a combination of at least two of these integrated circuit forms.
For another example, when a module in an apparatus may be implemented in the form of a scheduler of processing elements, the processing elements may be general-purpose processors, such as a central processing unit (central processing unit, CPU) or other processor that may invoke a program. For another example, the modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Various objects such as various messages/information/devices/network elements/systems/devices/actions/operations/processes/concepts may be named in the present application, and it should be understood that these specific names do not constitute limitations on related objects, and that the named names may be changed according to the scenario, context, or usage habit, etc., and understanding of technical meaning of technical terms in the present application should be mainly determined from functions and technical effects that are embodied/performed in the technical solution.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the apparatus and modules described above may refer to the corresponding process in the foregoing method embodiment, which is not repeated herein.
Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
As shown in fig. 3, the present application also provides an electronic device, based on the same technical concept, the electronic device 300 including a processor 301 and a memory 302, and may further include an information input/information output (I/O) interface 303, one or more of communication components 304, and a communication bus 305.
Wherein the processor 301 is configured to control the overall operation of the electronic device 300 to perform all or part of the steps of the offset printing method described above; the memory 302 is used to store various types of data to support operation at the electronic device 300, which may include, for example, instructions for any application or method operating on the electronic device 300, as well as application-related data. The Memory 302 may be implemented by any type or combination of volatile or non-volatile Memory devices, such as one or more of static random access Memory (Static Random Access Memory, SRAM), electrically erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), erasable programmable Read-Only Memory (Erasable Programmable Read-Only Memory, EPROM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk, or optical disk.
The I/O interface 303 provides an interface between the processor 301 and other interface modules, which may be a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 304 is used to test wired or wireless communication between the electronic device 300 and other devices. Wireless communication, such as Wi-Fi, bluetooth, near field communication (Near Field Communication, NFC for short), 2G, 3G or 4G, or a combination of one or more thereof, the corresponding communication component 104 may thus comprise: wi-Fi part, bluetooth part, NFC part.
Communication bus 305 may include a pathway to transfer information between the aforementioned components. The communication bus 305 may be a PCI (Peripheral Component Interconnect, peripheral component interconnect standard) bus or an EISA (Extended Industry Standard Architecture ) bus, or the like. The communication bus 305 may be divided into an address bus, a data bus, a control bus, and the like.
The electronic device 300 may be implemented by one or more application specific integrated circuits (Application SpecificIntegrated Circuit, abbreviated ASIC), digital signal processors (Digital Signal Processor, abbreviated DSP), digital signal processing devices (Digital Signal Processing Device, abbreviated DSPD), programmable logic devices (Programmable Logic Device, abbreviated PLD), field programmable gate arrays (Field Programmable Gate Array, abbreviated FPGA), controllers, microcontrollers, microprocessors, or other electronic components for performing the offset printing method as set forth in the above embodiments.
The electronic device 300 may include, but is not limited to, a mobile terminal such as a digital broadcast receiver, a PDA (personal digital assistant), a PMP (portable multimedia player), etc., and a fixed terminal such as a digital TV, a desktop computer, etc., and may also be a server, etc.
As shown in fig. 4, based on the same technical concept, the embodiment of the present application also provides an offset printing system 400 including a current printing assembly 401 of a current offset printing machine, an electron beam irradiation assembly 402, a printing image photographing member 403, and the above-described electronic device 300;
the print image capturing element 403 is configured to capture a print image on a print object, and send captured print image data to the electronic device 300;
the electronic device 300 processes the multi-user print image data and controls the current printing unit 401 or the electron beam irradiation unit 402 to adjust based on the processing result.
Based on the same technical idea, the embodiment of the application further provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and the steps of the offset printing method are realized when the computer program is executed by a processor.
The computer readable storage medium may include: a U-disk, a removable hard disk, a read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application is not limited to the specific combinations of the features described above, but also covers other embodiments which may be formed by any combination of the features described above or their equivalents without departing from the spirit of the application. Such as the above-mentioned features and the technical features having similar functions (but not limited to) applied for in the present application are replaced with each other.

Claims (6)

1. A method of offset printing comprising:
acquiring a current printing image on a printing stock;
inputting the current printed image into an image recognition model;
acquiring a current recognition result output by the image recognition model, and generating an adjustment strategy based on the current recognition result;
if the current recognition result is not clear, generating the adjustment strategy based on the current recognition result comprises:
acquiring current pressure data between current printing components;
acquiring a pressure adjustment strategy of the current pressure data based on the current identification result, wherein the pressure adjustment strategy comprises a target pressure value;
the pressure adjustment strategy for acquiring the current pressure data based on the current identification result, wherein the pressure adjustment strategy comprises target pressure values comprising:
judging whether a first pressure value which corresponds to the current identification result and is adjusted by the current pressure data exists in a local strategy storage library;
if not, receiving a second pressure value sent by other strategy storages sent by the server, and when the identification result is the same as the current identification result, other offset printers pass the printing of the image after adjusting the pressure data to the second pressure value;
taking the second pressure value as the target pressure value and storing the second pressure value to the local policy store;
if the current recognition result is that the printing ink is not cured, generating the adjustment strategy based on the current recognition result comprises:
if the electron beam irradiation assembly does not swing, generating swing angle information of the electron beam irradiation assembly based on the printing image;
transmitting the swing angle information to the electron beam irradiation assembly;
before the current printed image is input into the image recognition model, the method further comprises the following steps:
acquiring image sample data, wherein the image sample data comprises a printed unclear image and a printed ink uncured image;
constructing an image feature network model based on the image sample data;
training the image feature network model based on the image sample data to obtain a trained image recognition model;
and identifying the printing effect of the current printing image based on the trained image identification model.
2. The offset printing process of claim 1, further comprising:
acquiring the current times of uncured printing ink;
acquiring the equipment grade of the current offset printer, and acquiring a frequency threshold value based on the equipment grade;
and if the current times are not smaller than the times threshold, sending alarm information to a preset terminal.
3. An offset printing apparatus, comprising:
the first acquisition module is used for acquiring a current printing image on a printing object;
the input module is used for inputting the current printing image into an image recognition model;
the acquisition generation module is used for acquiring a current recognition result output by the image recognition model and generating an adjustment strategy based on the current recognition result; if the current recognition result is not clear, generating the adjustment strategy based on the current recognition result comprises: acquiring current pressure data between current printing components; acquiring a pressure adjustment strategy of the current pressure data based on the current identification result, wherein the pressure adjustment strategy comprises a target pressure value; the pressure adjustment strategy for acquiring the current pressure data based on the current identification result, wherein the pressure adjustment strategy comprises target pressure values comprising: judging whether a first pressure value which corresponds to the current identification result and is adjusted by the current pressure data exists in a local strategy storage library; if not, receiving a second pressure value sent by other strategy storages sent by the server, and when the identification result is the same as the current identification result, other offset printers pass the printing of the image after adjusting the pressure data to the second pressure value; taking the second pressure value as the target pressure value and storing the second pressure value to the local policy store; if the current recognition result is that the printing ink is not cured, generating the adjustment strategy based on the current recognition result comprises: if the electron beam irradiation assembly does not swing, generating swing angle information of the electron beam irradiation assembly based on the printing image; transmitting the swing angle information to the electron beam irradiation assembly; before the current printed image is input into the image recognition model, the method further comprises the following steps: acquiring image sample data, wherein the image sample data comprises a printed unclear image and a printed ink uncured image; constructing an image feature network model based on the image sample data; training the image feature network model based on the image sample data to obtain a trained image recognition model; and identifying the printing effect of the current printing image based on the trained image identification model.
4. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program capable of being loaded by the processor and performing the method according to any of claims 1 to 2.
5. An offset printing system comprising a current printing assembly of a current offset printer, an electron beam irradiation assembly, a print image capturing element, and the electronic device of claim 4;
the printing image shooting piece is used for shooting a printing image on the printing stock and sending shot printing image data to the electronic equipment;
and the electronic equipment processes the multi-user printing image data and controls the current printing assembly or the electron beam irradiation assembly to adjust based on the processing result.
6. A computer readable storage medium, characterized in that a computer program is stored which can be loaded by a processor and which performs the method according to any of claims 1 to 2.
CN202210918552.5A 2022-08-01 2022-08-01 Offset printing method, device, equipment, system and computer readable storage medium Active CN115230295B (en)

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Publication number Priority date Publication date Assignee Title
US5033378A (en) * 1988-01-05 1991-07-23 Komori Corporation Defective print detecting device
CN2773679Y (en) * 2005-02-05 2006-04-19 中国印钞造币总公司 Color-printing quality on-line inspector for double offset print
CN1950210A (en) * 2004-05-03 2007-04-18 海德堡印刷机械股份公司 Inline measurement and regulation in printing machines
JP2019136995A (en) * 2018-02-14 2019-08-22 ダックエンジニアリング株式会社 Quality inspection device for cardboard sheet
CN114418899A (en) * 2022-03-28 2022-04-29 深圳市嘉年印务有限公司 Self-adaptive repairing method and system for self-color printing and readable storage medium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5033378A (en) * 1988-01-05 1991-07-23 Komori Corporation Defective print detecting device
CN1950210A (en) * 2004-05-03 2007-04-18 海德堡印刷机械股份公司 Inline measurement and regulation in printing machines
CN2773679Y (en) * 2005-02-05 2006-04-19 中国印钞造币总公司 Color-printing quality on-line inspector for double offset print
JP2019136995A (en) * 2018-02-14 2019-08-22 ダックエンジニアリング株式会社 Quality inspection device for cardboard sheet
CN114418899A (en) * 2022-03-28 2022-04-29 深圳市嘉年印务有限公司 Self-adaptive repairing method and system for self-color printing and readable storage medium

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