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CN-117124731-B - Printing method, calibration method and related device and equipment for spray head calibration chart

CN117124731BCN 117124731 BCN117124731 BCN 117124731BCN-117124731-B

Abstract

The invention discloses a spray head calibration chart printing method, a device and equipment related to the spray head calibration chart printing method, and relates to the technical field of ink-jet printing. According to the method, the first calibration chart for calibrating the spray head is printed, the second calibration chart is obtained, the spray head channel information can be quickly and simply obtained by utilizing the second reference identification part and/or the second calibration identification part and the second detection part in the second calibration chart, and the calibration information can be obtained according to the second detection part, so that simple, efficient and accurate spray head calibration is realized.

Inventors

  • PENG DAIZHONG
  • CHEN YAN

Assignees

  • 深圳市汉森软件股份有限公司

Dates

Publication Date
20260512
Application Date
20220518

Claims (14)

  1. 1. A method of printing a spray head calibration map, the method comprising: The method comprises the steps of obtaining a first calibration chart, and carrying out different types of spray head calibration by setting different first detection parts in the different first calibration charts, wherein the first calibration chart comprises a first reference identification part and a first calibration identification part at the same time, and the corresponding first detection part comprises a first reference part and a first calibration part at the same time, or the first calibration chart comprises only the first reference identification part and no first calibration identification part, and the corresponding first detection part comprises only the first reference part, and the first calibration chart comprises only the first reference identification part and the first reference part, wherein the first reference identification part is used for identifying first spray head channel information, the first calibration identification part is used for identifying second spray head channel information, the first spray head channel information is information of a first spray head channel for printing the first reference part, and the second spray head channel information is information of a second spray head channel for printing the first calibration part, and the first spray head channel information and the second spray head channel information are the same or different; Printing the first calibration graph on a printing medium to obtain a second calibration graph for calibrating the spray head.
  2. 2. The method of printing a calibration chart of a head according to claim 1, wherein the head calibration includes any one of a step calibration, a head pitch calibration, a lateral pitch calibration, a longitudinal pitch calibration, a vertical calibration, a bi-directional calibration, and a color registration calibration.
  3. 3. The method according to claim 2, wherein the head calibration is head pitch calibration, and the first calibration chart includes a first reference mark portion and a first detection portion including only the first reference portion, wherein the first reference portion includes a rectangular frame in which any one of a pattern "ten", a pattern "n", a pattern "x", and a pattern "t" is provided.
  4. 4. The method of printing a calibration chart of a spray head according to claim 2, wherein the first detection part comprises a plurality of first sub-detection parts, and calibration parameters are marked near each of the first sub-detection parts.
  5. 5. The method according to claim 4, wherein the head calibration is the step calibration or the longitudinal pitch calibration, the first calibration chart includes a first detection portion, a first reference mark portion, and a first calibration mark portion, wherein the first detection portion includes a plurality of first sub-detection portions including a first reference portion and a first calibration portion arranged in an X direction, the first reference portion and the first calibration portion include a plurality of line segments parallel to the X direction, respectively, projections of the line segments in the first reference portion and the first calibration portion in a Y direction overlap, respectively, the X direction is a head printing direction, and the Y direction is perpendicular to the X direction.
  6. 6. The method according to claim 4, wherein the head calibration is any one of lateral pitch calibration, vertical calibration, bidirectional calibration, and color registration calibration, the first calibration chart includes a first detection section, a first reference mark section, and a first calibration mark section, wherein the first detection section includes a plurality of first sub-detection sections including a first reference section and a first calibration section aligned in an X direction, and initial positions of the first reference section and the first calibration section in a Y direction are different.
  7. 7. The inkjet head calibration map printing method according to claim 6 wherein the first reference portion and the first calibration portion are each color patches.
  8. 8. A method of calibrating a spray head, the method comprising: acquiring a second calibration chart according to any one of claims 1 to 7, wherein the second calibration chart corresponding to different types of spray head calibration comprises a second reference mark part and a second calibration mark part corresponding to the first reference mark and the first calibration mark part, and the corresponding second detection part comprises a second reference part and a second calibration part; Acquiring the first nozzle channel information and the second nozzle channel information according to the second reference identification part and the second calibration identification part; acquiring calibration information according to the second detection part; Performing nozzle calibration according to the calibration information, the first nozzle channel information and the second nozzle channel information; Or alternatively, the first and second heat exchangers may be, Acquiring a second calibration chart according to any one of claims 1 to 7, wherein the second calibration chart corresponding to different types of spray head calibration only comprises a second reference mark part and no second calibration mark part, and the corresponding second detection part also comprises a second reference part, and the second calibration chart only comprises a second reference mark part and a second reference part; acquiring calibration information according to the second detection part; And performing nozzle calibration according to the calibration information and the first nozzle channel information.
  9. 9. The method for calibrating a showerhead according to claim 8, wherein the showerhead is calibrated for a showerhead pitch, the second calibration graph includes a plurality of second detection portions and corresponding second reference mark portions, and the acquiring calibration information according to the second detection portions includes: Identifying the second detection part corresponding to the second reference identification part according to the second reference identification part; acquiring a specified point in each second detection part; and calculating the distance between the specified points in the second detection parts in the X direction and the Y direction, and acquiring the calibration information of the nozzle calibration.
  10. 10. The method according to claim 8, wherein the head calibration is any one of a step calibration, a head lateral spacing calibration, a head longitudinal spacing calibration, a vertical calibration, a bidirectional calibration, a color registration calibration, the second detection section includes a plurality of second sub-detection sections, each second sub-detection section includes a second reference section and a second calibration section, calibration parameters are marked near each second sub-detection section, and the acquiring calibration information according to the second detection section includes: Acquiring a second sub-detection part meeting preset conditions, and marking the second sub-detection part as a second reference sub-detection part; and acquiring the calibration information according to the calibration parameters corresponding to the second reference sub-detection part.
  11. 11. The method of calibrating a showerhead of claim 10, wherein the predetermined condition is: and the difference value of the coordinates of the starting positions of the second reference part and the second calibration part in the second sub-detection part in the X direction and/or the coordinates in the Y direction is smaller than or equal to a preset transverse threshold value and/or a preset longitudinal threshold value.
  12. 12. A spray head calibration map printing apparatus, the apparatus comprising: The first calibration chart acquisition module is used for acquiring a first calibration chart, and carrying out different types of spray head calibration by setting different first detection parts in the first calibration chart, wherein the first calibration chart simultaneously comprises a first reference identification part and a first calibration identification part, the corresponding first detection part simultaneously comprises a first reference part and a first calibration part, or the first calibration chart only comprises the first reference identification part and no first calibration identification part, the corresponding first detection part also only comprises the first reference part, the first detection chart only comprises the first reference identification part and the first reference part, the first reference identification part is used for identifying first spray head channel information, the first calibration identification part is used for identifying second spray head channel information, the first spray head channel information is information of a first spray head channel for printing the first reference part, and the second spray head channel information is information of a second spray head channel for printing the first calibration part, and the first spray head channel information and the second spray head channel information are the same or different; And the printing module is used for printing the first calibration graph on a printing medium to obtain a second calibration graph for calibrating the spray head.
  13. 13. A spray head calibration device, the device comprising: A second calibration chart acquisition module, configured to acquire the second calibration chart according to any one of claims 1 to 7, where the second calibration chart corresponding to different types of nozzle calibration includes a second reference identifier corresponding to the first reference identifier and the first calibration identifier, and the corresponding second detection portion includes the second reference portion and the second calibration portion; a channel information acquisition module for acquiring the first and second nozzle channel information according to the second reference identification part and the second calibration identification part A calibration information acquisition module for acquiring calibration information according to the second detection part; The calibration module is used for calibrating the spray heads according to the calibration information, the first spray head channel information and the second spray head channel information; Or alternatively, the first and second heat exchangers may be, A second calibration chart acquisition module, configured to acquire the second calibration charts according to any one of claims 1 to 7, where the second calibration charts corresponding to different types of nozzle calibration include only the second reference mark portion and no second calibration mark portion, and the corresponding second detection portion includes only the second reference portion; the channel information acquisition module is used for acquiring the first nozzle channel information according to the second reference identification part; a calibration information acquisition module for acquiring calibration information according to the second detection part; And the calibration module is used for calibrating the spray heads according to the calibration information and the first spray head channel information.
  14. 14. An inkjet printing apparatus comprising at least one processor, at least one memory and computer program instructions stored in the memory, which when executed by the processor, implement the method of any one of claims 1-11.

Description

Printing method, calibration method and related device and equipment for spray head calibration chart Technical Field The present invention relates to the field of inkjet printing technologies, and in particular, to a method for printing a calibration chart of a nozzle, a calibration method, and related devices and apparatuses thereof. Background In practical production application, in order to improve printing output and printing efficiency, more and more splicing sprayers are used in the way of splicing sprayers, as shown in fig. 1, in order to improve the output of primary printing, splice a plurality of sprayers in the Y direction or the longitudinal direction, and in order to improve the precision of primary printing, splice a plurality of sprayers in the X direction or the transverse direction in a staggered manner, and the existing sprayers are manually installed and fixed, so that the installation error is larger, the problems of inclination of the sprayer installation, inaccurate installation distance and the like often occur, and the final printed image has deviation. Furthermore, in order to improve the printing precision and printing efficiency, the reciprocating scanning technology is often adopted to perform ink-jet printing, the spray head is scanned and printed back and forth along the X direction in the printing process, and the spray head and the printing medium are moved for a certain stepping distance along the Y direction between Pass scanning, so that the printing with high precision and large breadth is performed alternately, however, due to the structures of the stepping motor and the machine, the problems of inaccurate stepping, uneven left and right reciprocating printing positions, inaccurate color registration and the like often exist. Current methods for solving the above problems perform the calibration of the spray head by printing a calibration chart, where the calibration of the spray head often includes step calibration, spray head pitch calibration, lateral pitch calibration, longitudinal pitch calibration, vertical calibration, bidirectional calibration, color registration calibration, and the like. The step calibration is to calibrate the step offset of the spray heads in the reciprocating scanning printing, the spray head interval calibration is to calibrate the distance between the spray heads in the transverse direction and the longitudinal direction, the accurate calibration is to calibrate by the calibration modes such as the transverse interval calibration, the longitudinal interval calibration and the like, the vertical calibration is used for calibrating whether the spray heads are vertical to the printing direction, the two-way calibration criterion is to calibrate whether the printing positions of the spray head channels are consistent in the reciprocating scanning process, and the printing positions of the different color channels are consistent in the scanning process when the color correction criterion is used. In the prior art, calibration parameters are often obtained by printing a calibration chart and then manually identifying, but the calibration chart is complex and needs more parameters to be set, and the manual identifying mode has large error, inaccuracy and low efficiency. Disclosure of Invention In view of the above, the embodiments of the present invention provide a printing method, a calibration method, and related devices and apparatuses for calibrating a spray head, so as to solve the problems of large error and low efficiency of spray head calibration in the prior art. In a first aspect, an embodiment of the present invention provides a method for printing a calibration chart of a spray head, where the method includes: Acquiring a first calibration chart, wherein the first calibration chart at least comprises a first detection part, a first reference identification part and/or a first calibration identification part, the first detection part comprises a first reference part and/or a first calibration part, the first reference identification part is used for identifying first nozzle channel information, the first calibration identification part is used for identifying second nozzle channel information, the first nozzle channel information is information of a first nozzle channel for printing the first reference part, the second nozzle channel information is information of a second nozzle channel for printing the first calibration part, and the first nozzle channel information and the second nozzle channel information are the same or different; Printing the first calibration graph on a printing medium to obtain a second calibration graph for calibrating the spray head. Preferably, the spray head calibration comprises any one of stepping calibration, spray head spacing calibration, transverse spacing calibration, longitudinal spacing calibration, vertical calibration, bidirectional calibration and color registration calibration. Preferably, the