CN112248665B - Method, device, equipment and medium for detecting book printing positive and negative overprinting - Google Patents

Method, device, equipment and medium for detecting book printing positive and negative overprinting Download PDF

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Publication number
CN112248665B
CN112248665B CN202011041718.7A CN202011041718A CN112248665B CN 112248665 B CN112248665 B CN 112248665B CN 202011041718 A CN202011041718 A CN 202011041718A CN 112248665 B CN112248665 B CN 112248665B
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printing
book
printed
overprinting
overprint
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CN112248665A (en
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秦昌慧
王刚
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Shenzhen Shengde Jingyue Technology Co ltd
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Shenzhen Shengde Jingyue Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B41J29/387—Automatic cut-off devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/46—Applications of alarms, e.g. responsive to approach of end of line

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  • Record Information Processing For Printing (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

The invention discloses a method, a device, equipment and a medium for detecting the overprinting of the printing front and back sides of a book. The method for detecting the overprinting of the printing front and back sides of the book comprises the following steps: step S1: overprinting detection marks on the front side and the back side of the printed book text; step S2: collecting overprint detection marks printed on the front side and the back side of a book text; and step S3: analyzing the horizontal spacing and the vertical spacing of the overprint detection marks, and judging whether the horizontal spacing and the vertical spacing meet the requirement of printing errors or not; and step S4: if the horizontal distance and the vertical distance meet the requirement of printing errors, continuing printing, otherwise, giving an alarm and stopping printing. According to the method, the overprint detection marks are printed on the front side and the back side of the book text, and the horizontal and vertical distances of the overprint detection marks are analyzed, so that the printing effect and the reading experience of the book are guaranteed through real-time dislocation detection.

Description

Method, device, equipment and medium for detecting book printing positive and negative overprinting
Technical Field
The invention relates to the technical field of digital printing, in particular to a method, a device, equipment and a medium for detecting the overprinting of the front side and the back side of book printing.
Background
With the development and popularization of digitalization and networking, the vigorous development of emerging literature enables the publishing printing field to meet brand-new challenges and opportunities, the printing quantity is larger and larger, the printing speed is higher and faster, and because a large amount of work still needs human participation in the book and periodical printing process, the printing error rate is higher and higher, in the case of positive and negative overprinting of books, the positive and negative pages of the books are basically corresponding under normal conditions, but the printed contents of the positive and negative pages are dislocated due to the problems of typesetting or mechanical platforms and the like in the actual printing process, so that the printing effect of the books is influenced, part of information is possibly lost in the subsequent processing of the books, and the reading experience is seriously influenced.
The existing solution is to determine whether content dislocation exists or not by a way of printing a sample book, and then adjust printing equipment according to the printing condition of the sample book, and this way can only eliminate the problem of fixity existing in book typesetting or other aspects, and can not eliminate the dislocation problem caused by mechanical problems or other problems in the printing process, so how to detect dislocation of front and back pages in real time, so as to ensure the printing effect of the book, which becomes a problem that needs to be solved urgently by the person in the art.
Disclosure of Invention
Therefore, the invention provides a method, a device, equipment and a medium for detecting the overprinting of the front and back printed pages of a book, and aims to solve the problem that the content of the front and back pages is misplaced due to mechanical problems or other problems in the printing process in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a method for detecting the overprinting of the front side and the back side of book printing, which comprises the following steps:
step S1: overprinting detection marks of the front and back sides of the printed book text;
step S2: collecting overprint detection marks printed on the front side and the back side of a book text;
and step S3: analyzing the horizontal spacing and the vertical spacing of overprint detection marks printed on the front side and the back side of a book text, and judging whether the horizontal spacing and the vertical spacing meet the printing error requirement or not;
and step S4: if the horizontal spacing and the vertical spacing meet the requirement of printing errors, continuing printing; and if the horizontal spacing and the vertical spacing do not meet the printing error requirement, giving an alarm and stopping printing.
Further, the step of collecting the overprint detection marks printed on the front and back sides of the book text in step S2 includes:
step S21: collecting overprint detection marks printed on the front side of a book text;
step S22: and illuminating the overprint detection marks printed on the reverse side of the book text, and collecting the overprint detection marks printed on the reverse side of the book text.
Further, in step S1, the overprint detection flag is printed in a cut-out area of the book text, the cut-out area being cut out after the book text is printed.
Further, in step S3, the printing error of the vertical pitch is ± 0.15mm, and the printing error of the horizontal pitch is ± 0.15mm.
Further, step S4 includes:
step S41: if the horizontal spacing and the vertical spacing simultaneously meet the requirement of printing errors, continuing to print;
step S42: and if the horizontal spacing and/or the vertical spacing do not meet the printing error requirement, giving an alarm and stopping printing.
The invention also provides a device for detecting the front and back overprinting of the book printing, which executes the method for detecting the front and back overprinting of the book printing, wherein the device for detecting the front and back overprinting of the book printing comprises a printing module, a visual detection module and a data processing module, and the printing module is provided with a back light supplementing device;
the printing module is used for printing book texts and overprinting detection marks on the front and back sides of the book texts;
the visual detection module is used for collecting overprint detection marks printed on the front side and the back side of a book text and transmitting the overprint detection marks to the data processing module;
the data processing module is used for analyzing the horizontal spacing and the vertical spacing of overprint detection marks printed on the front side and the back side of the book text and judging whether the horizontal spacing and the vertical spacing meet the requirement of printing errors or not;
the back light filling device is used for illuminating overprint detection marks printed on the back side of the book text.
The invention also provides printing equipment for detecting the printing of the front overprinting and the back overprinting of the book, and the printing equipment for detecting the printing of the front overprinting and the back overprinting of the book comprises the device for detecting the printing of the front overprinting and the back overprinting of the book.
The invention also provides a storage medium for detecting the printing positive and negative overprinting of the book, wherein the storage medium for detecting the printing positive and negative overprinting of the book stores one or more program instructions, and the program instructions are used for executing the method for detecting the printing positive and negative overprinting of the book.
The invention has the following advantages:
according to the invention, overprint detection marks are printed on the front side and the back side of the book text, and the horizontal spacing and the vertical spacing of the overprint detection marks printed on the front side and the back side of the book text are analyzed, so that the printing effect and the reading experience of the book are ensured by carrying out the dislocation detection of the front printing page and the back printing page in real time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
FIG. 1 is a schematic flow chart of a first embodiment of a method for detecting the overprinting of printed front and back sides of a book according to the present invention;
FIG. 2 is a schematic flow chart of a method for detecting the overprinting of printed front and back sides of a book according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram and a flowchart of a device for detecting the overprinting of the printed front and back sides of a book according to the present invention;
FIGS. 4-5 are printed views of the book printing front and back overprinting provided by the present invention;
FIG. 6 is a schematic illustration of horizontal and vertical spacing provided by the present invention;
in the figure:
1. a detection device for the overprinting of the printing front and back sides of the book; 11. a printing module; 111. a back light supplement device; 12. a visual detection module; 13. and a data processing module.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow chart of a first embodiment of a method for detecting the overprinting of printed front and back sides of a book according to the present invention.
As shown in fig. 1, the method for detecting the overprinting of the printed front and back sides of the book comprises the following steps.
Step S1: overprinting detection marks of the front and back sides of the printed book text; in step S1, the overprint detection mark is printed in a cut-out area of the book text, which is cut out after the book text printing is completed.
Step S2: overprint detection marks printed on the front and back sides of a book text are collected.
And step S3: and analyzing the horizontal spacing and the vertical spacing of overprint detection marks printed on the front side and the back side of the book text, and judging whether the horizontal spacing and the vertical spacing meet the requirement of printing errors. In step S3, the printing error of the vertical pitch is, for example, ± 0.15mm, and the printing error of the horizontal pitch is, for example, ± 0.15mm.
And step S4: if the horizontal spacing and the vertical spacing meet the requirement of printing errors, continuing printing; and if the horizontal spacing and the vertical spacing do not meet the printing error requirement, giving an alarm and stopping printing.
According to the method, the overprint detection marks are printed on the front side and the back side of the book text, and the horizontal spacing and the vertical spacing of the overprint detection marks printed on the front side and the back side of the book text are analyzed, so that the dislocation detection of the front printed page and the back printed page is carried out in real time, and the printing effect and the reading experience of the book are guaranteed.
Fig. 2 is a schematic flow chart of a method for detecting the overprinting of the printed front and back sides of a book according to a second embodiment of the invention.
As shown in fig. 2, the step of collecting the overprint detection marks printed on the front and back sides of the book text in step S2 includes:
step S21: and collecting overprint detection marks printed on the front side of the book text.
Step S22: and illuminating the overprint detection marks printed on the reverse side of the book text, and collecting the overprint detection marks printed on the reverse side of the book text.
According to the embodiment, the reverse side of the book text is illuminated, the overprint detection identification of the reverse side is identified by utilizing the backlight perspective principle, two visual detection modules do not need to be arranged, the book text does not need to be turned over, and the detection efficiency is improved.
The present embodiment provides two possibilities for step S4. Step S4 comprises the following steps:
step S41: if the horizontal spacing and the vertical spacing simultaneously meet the requirement of printing errors, continuing to print;
step S42: and if the horizontal spacing and/or the vertical spacing do not meet the printing error requirement, giving an alarm and stopping printing.
In the embodiment, only when the horizontal distance and the vertical distance are met within the error range, the printing is continued, and the printing effect and the reading experience of the books are guaranteed.
Fig. 3 is a schematic structural diagram and a work flow chart of the detection device for the overprinting of the printed book.
As shown in fig. 3, the device 1 for detecting the overprinting of the front and back sides of book printing comprises a printing module 11, a visual detection module 12 and a data processing module 13, wherein the printing module 11 is provided with a back light supplement device 111. In this embodiment:
and the back light supplementing device 111 is used for supplementing light for the reverse overprinting detection mark, so that the reverse overprinting detection mark is clearer and is convenient to collect and identify.
The vision inspection module 12 is configured to collect image information of the overprint detection mark and transmit the image information to the data processing module 13.
The data processing module 13 is configured to analyze horizontal and vertical distances of overprint detection marks printed on the front and back sides of a book text, and determine whether the horizontal and vertical distances meet a printing error requirement; in actual printing, after book information to be printed enters the inkjet printing system, the book information is processed by the data processing module 13 and then a printing instruction is sent to the printing module 11.
Fig. 4-5 are printed images of the book printing front and back overprinting provided by the invention.
As shown in fig. 4, in the actual printing process, the printed page is generally larger than the page of the book, the overprint detection mark is located on the printed page outside the page of the book, and according to the actual printing requirement, the overprint detection mark can be printed on the upper side, the lower side, the left side and the right side of the printed page, that is, the printing position of the overprint detection mark has no special requirement, and in addition, the overprint detection mark has various expression forms, can be a single circle, a triangle or other polygons, can also be a combination of a plurality of circles or other polygons, or can be a dot, a cross mark, or the like;
as shown in fig. 5, in a specific embodiment, two circle combinations with the same size are used as overprint detection marks, the overprint detection marks are printed at the bottom of a printed page, the positions of the overprint detection marks are fixed on the printed page, that is, the front page and the back page both contain the overprint detection marks of the double circle combinations in the actual printing process, and because the paper has certain light transmittance, the overprint detection marks on the back side can be transmitted out under the backlight-free state, but the colors are light, so that the quick and accurate identification is difficult. It should be noted that the overprint detection marks of the front and back pages should be arranged in a staggered manner in the actual printing process, so that the overlapping of the front and back pages is avoided, and the difficulty in identification is avoided.
Fig. 6 is a schematic diagram of the horizontal and vertical spacings provided by the present invention.
As shown in fig. 6, the data processing module detects the horizontal distance r between the front overprint detection mark and the back overprint detection mark, compares the horizontal distance r with the horizontal distance between the initial positions, and determines whether the error meets the printing requirement, if the left-right error is within ± 0.15mm, S31 is executed to continue printing; if the left and right errors exceed the range of +/-0.15 mm, S32 is executed to send out an alarm and stop printing;
in addition, the data processing module detects the vertical distance h between the circle center connecting line of the two circles of the front overprint detection identification and the circle center connecting line of the two circles of the back overprint detection identification, compares the vertical distance h with the vertical distance between the initial positions, judges whether the error meets the printing requirement, and if the vertical error is +/-0.15 mm, executes S31 to continue printing; if the upper and lower errors exceed the range of +/-0.15 mm, S32 is executed to give an alarm and stop printing.
The embodiment provides a printing equipment that positive and negative overprint of books printing detected, printing equipment that positive and negative overprint of books printing detected include positive and negative overprint detection device of books printing.
The printing apparatus of this embodiment may further include other components besides the aforementioned device for detecting the front-back overprint of book printing, and is not limited to the host, the housing, the power supply, the bracket, etc., and may also have other additional functions besides the function of the detection device, and is preferably a commercially available product unit.
The embodiment provides a storage medium for detecting the overprinting of the front and back sides of the printed book, wherein one or more program instructions are stored in the storage medium for detecting the overprinting of the front and back sides of the printed book, and the program instructions are used for executing the method for detecting the overprinting of the front and back sides of the printed book.
The storage medium may be a memory, for example, which may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory.
The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory.
The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), SLDRAM (SLDRAM), and Direct Rambus RAM (DRRAM).
The storage media described in connection with the embodiments of the invention are intended to comprise, without being limited to, these and any other suitable types of memory.
Those skilled in the art will recognize that the functionality described in this disclosure may be implemented in a combination of hardware and software in one or more of the examples described above. When software is applied, the corresponding functionality may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, it is intended that all such modifications and alterations be included within the scope of this invention as defined in the appended claims.

Claims (7)

1. A method for detecting the overprinting of the front side and the back side of printed books is characterized by comprising the following steps:
step S1: overprinting detection marks of the front and back sides of the printed book text;
step S2: collecting overprint detection marks printed on the front and back sides of a book text;
and step S3: analyzing the horizontal spacing and the vertical spacing of overprint detection marks printed on the front side and the back side of a book text, and judging whether the horizontal spacing and the vertical spacing meet the printing error requirement or not;
and step S4: if the horizontal spacing and the vertical spacing meet the requirement of printing errors, continuing printing; if the horizontal distance and the vertical distance do not meet the printing error requirement, sending an alarm and stopping printing;
the step of collecting overprint detection marks printed on the front and back sides of the book text in the step S2 includes:
step S21: collecting overprint detection marks printed on the front side of a book text through a visual detection module (12);
step S22: the overprint detection marks printed on the reverse side of the book text are illuminated through the back light supplement device (111), and the overprint detection marks printed on the reverse side of the book text are collected through the visual detection module (12) by utilizing the principle of backlight perspective.
2. The method for detecting overprinting of printed books according to claim 1, wherein in step S1, overprint detection marks are printed on cut-out areas of the text of the book, and the cut-out areas are cut out after the printing of the text of the book is completed.
3. The method for detecting printing overprinting of books according to claim 1, wherein in step S3, the printing error of the vertical spacing is ± 0.15mm, and the printing error of the horizontal spacing is ± 0.15mm.
4. The method for detecting the overprinting of the printed book as claimed in claim 1, wherein the step S4 comprises:
step S41: if the horizontal spacing and the vertical spacing simultaneously meet the requirement of printing errors, continuing to print;
step S42: and if the horizontal spacing and/or the vertical spacing do not meet the printing error requirement, giving an alarm and stopping printing.
5. A device for detecting the printing overprinting of a book, for performing the method for detecting the printing overprinting of a book according to any one of claims 1 to 4, wherein the device (1) for detecting the printing overprinting of a book comprises a printing module (11), a visual detection module (12) and a data processing module (13), and the printing module (11) is provided with a back light supplement device (111);
the printing module (11) is used for printing book texts and overprint detection marks on the front and back sides of the printed book texts;
the visual detection module (12) is used for collecting overprint detection marks printed on the front side and the back side of a book text and transmitting the overprint detection marks to the data processing module (13);
the data processing module (13) is used for analyzing the horizontal spacing and the vertical spacing of overprint detection marks printed on the front side and the back side of a book text and judging whether the horizontal spacing and the vertical spacing meet the requirement of printing errors or not;
the back light filling device (111) is used for illuminating overprint detection marks printed on the back of a book text.
6. Printing equipment for detecting the overprinting of the front side and the back side of the printed book, which is characterized by comprising the device for detecting the overprinting of the front side and the back side of the printed book according to claim 5.
7. A storage medium for book printing positive and negative overprinting detection, wherein the storage medium for book printing positive and negative overprinting detection stores one or more program instructions for executing the method for book printing positive and negative overprinting detection according to any one of claims 1 to 4.
CN202011041718.7A 2020-09-28 2020-09-28 Method, device, equipment and medium for detecting book printing positive and negative overprinting Active CN112248665B (en)

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CN112248665B true CN112248665B (en) 2023-01-13

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JP4310993B2 (en) * 2002-10-28 2009-08-12 富士ゼロックス株式会社 Image processing device
CN201240082Y (en) * 2008-07-09 2009-05-20 汕头市远东轻化装备有限公司 Two-sided plastic compounding machine
CN101323183B (en) * 2008-07-09 2010-12-15 汕头市远东轻化装备有限公司 Color printing film error-correcting method of double-face plastic compounding machine and double-face plastic compounding machine
CN202345004U (en) * 2011-11-27 2012-07-25 西安新达机械有限公司 Positive and negative printing registration device of high-speed medicinal aluminum foil printing coating machine
CN107679530A (en) * 2016-08-01 2018-02-09 陈雁秋 A kind of method for differentiating the homogeneity of the picture and text page with graph-text content combination watermark
CN107839342A (en) * 2017-11-09 2018-03-27 武汉虹之彩包装印刷有限公司 A kind of Chromatic Printing Control System and technique
CN111016449B (en) * 2019-05-23 2021-07-23 深圳圣德京粤科技有限公司 Method for adjusting positive and negative overprinting of ink-jet printing
CN110202962B (en) * 2019-06-25 2021-06-18 深圳弘博智能数码设备有限公司 Front-back registration detection method for digital printing machine

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