WO2023226294A1 - 一种墨滴观测仪位置校准方法及系统 - Google Patents

一种墨滴观测仪位置校准方法及系统 Download PDF

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WO2023226294A1
WO2023226294A1 PCT/CN2022/127842 CN2022127842W WO2023226294A1 WO 2023226294 A1 WO2023226294 A1 WO 2023226294A1 CN 2022127842 W CN2022127842 W CN 2022127842W WO 2023226294 A1 WO2023226294 A1 WO 2023226294A1
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observer
ink
ink droplet
ink drop
print head
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French (fr)
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朱云龙
白辰瑶
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Fudan University
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Fudan University
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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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/125—Sensors, e.g. deflection sensors
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/11—Ink jet characterised by jet control for ink spray

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  • the invention relates to the precision application field of inkjet printing, and in particular to a position calibration method and system for an ink drop observer.
  • the physical size of the nozzle is much larger than the size of a single nozzle and the field of view of the ink droplet observer, when detecting the status of a row of nozzles, it is necessary to move the nozzle or the ink droplet observer.
  • the line connecting the positions of each row of nozzles is not completely perpendicular to the ink droplet observer, large-scale movement of the nozzle or ink droplet observer will cause the ink droplets ejected from subsequent nozzles to exceed the observation depth range of the ink droplet observer.
  • the calibration of the ink drop observer is usually to use the ink drop observer to observe a calibration object of known length, and use the corresponding relationship between the actual length of the calibration object and the pixel distance in the field of view of the ink drop observer to perform a proportional conversion.
  • the line connecting the positions of each row of nozzles is not completely perpendicular to the ink droplet observer, there will be a certain error in the corresponding relationship, resulting in deviations in the measured parameter values such as droplet volume and velocity.
  • the relative positions of the ink droplet observer and the nozzle need to be calibrated.
  • the purpose of the present invention is to provide a position calibration method for an ink droplet observer with simple calculation and high calculation accuracy in order to overcome the above-mentioned shortcomings of the prior art.
  • a method for position calibration of an ink drop observer including the following steps:
  • the value ranges of ⁇ x and ⁇ y include positive numbers, negative numbers, and zero.
  • ⁇ is the adjustment angle value of the ink drop observer.
  • the moving ink droplet observer and the inkjet print head move one of the two or move both at the same time, and only one of the two moves in the same direction.
  • a position calibration system for an ink drop observer including:
  • Main control computer the main control computer performs the following steps: sends the printing data to the print controller, controls and adjusts the relative position of the inkjet print head and the ink drop observer, so that the first ink drop appears within the field of view of the ink drop observer , control the ink droplet observer and the inkjet print head to move along the x direction and the y direction, so that the second ink droplet is clearly visible within the observation field of the ink droplet observer, and accurately record the movement of the ink droplet observer or the inkjet print head along the x direction.
  • the moving distance ⁇ x and the moving distance ⁇ y along the y direction are calculated, and the adjustment angle value of the ink droplet observer is calculated based on ⁇ x and ⁇ y.
  • the ink droplet observer is controlled to rotate clockwise or counterclockwise to make the single row spray
  • the hole connection line is perpendicular to the optical axis of the ink droplet observer lens;
  • a printing controller which drives the inkjet print head to eject ink and simultaneously sends the printing driving signal to the ink drop observer;
  • An inkjet printhead which ejects the first ink droplet from the starting nozzle hole and controls the end nozzle hole to eject the second ink droplet according to the control of the print controller;
  • An ink drop observer is used to synchronously photograph the ejected ink droplets according to the printing driving signal.
  • the value ranges of ⁇ x and ⁇ y include positive numbers, negative numbers, and zero.
  • ⁇ is the adjustment angle value of the ink drop observer.
  • the main control computer controls the ink drop observer to rotate clockwise; when the adjustment angle value of the ink drop observer is less than 0, the main control computer controls the ink drop observer to rotate counterclockwise.
  • the main control computer controls the ink droplet observer and the inkjet print head to move along the x direction and the y direction to move one of the two or move both at the same time, and only move one of the two in the same direction.
  • the present invention has the following beneficial effects:
  • the present invention only needs to perform simple trigonometric calculations to obtain the corresponding angle adjustment value of the ink droplet observer.
  • the calculation method is simple and the calculation amount is small.
  • the present invention only adjusts one of the ink drop observer and the inkjet print head in one direction, which not only simplifies the adjustment method, but also simplifies the calculation.
  • Figure 1 is a flow chart of the method of the present invention
  • Figure 2 is a schematic diagram of the ink droplet observation system
  • Figure 3 is a schematic diagram of the single-row nozzle hole detection process
  • Figure 4 is a schematic diagram of the deviation between the line connecting the nozzle position and the optical axis of the ink droplet observer lens
  • Figure 5 is a schematic diagram of the position calibration method of the ink droplet observer, in which (a) is a schematic diagram of adjusting the position of the ink droplets ejected from the starting nozzle hole, and (b) is a schematic diagram of adjusting the position of the ink droplet ejected from the end nozzle hole;
  • Figure 6 is a schematic diagram of the angle calculation method of the ink drop observer position calibration method in Embodiment 1;
  • Figure 7 is a schematic diagram of the angle calculation method of the position calibration method of the ink drop observer in Embodiment 2;
  • Figure 8 is a schematic diagram of the angle calculation method of the position calibration method of the ink drop observer in Embodiment 3.
  • the invention provides an ink drop observation position calibration method, which is used for automatic detection of nozzle status in inkjet printing.
  • a commonly used ink drop observation system includes a main control computer 110 , a print controller 120 , an inkjet print head 130 and an ink drop observer 140 .
  • the main control computer 110 transmits the printing data to the printing controller 120.
  • the printing controller 120 drives the inkjet print head 130 to eject ink and eject ink droplets 150.
  • the printing controller 120 sends the printing driving signal to the ink droplet observation device.
  • the ink droplet observer 140 performs synchronous photography of the ejected ink droplets 150 according to the printing driving signal.
  • the main control computer 110 controls the ink droplet observer 140 to perform characteristic measurement and analysis on the photographed information of the ejected ink droplets 150 .
  • each row of nozzle holes in the nozzle is usually automatically detected.
  • the ink drop observer 140 first measures the ink droplets 1501 ejected from the nozzle hole 1601 at the starting end of the inkjet print head 130.
  • the single row of nozzle holes connection 260 will be connected to the optical axis of the ink drop observer lens. 240 is not vertical. Adjust the relative position of the inkjet print head 130 and the ink drop observer 140, first detect the ink droplets ejected from the 1601th nozzle hole at the beginning of the 160th row of nozzle holes, and then detect other nozzle holes in the 160th row, such as 1620, it is necessary to move the inkjet print head 130 or the ink drop viewer 140 along the x direction.
  • the movement in the x direction will cause the images of ink droplets ejected by other nozzles in the 160th row to exceed the detection depth of field of the ink droplet observer 140, thus requiring inkjet inspection.
  • the ink print head 130 or the ink drop spotter 140 adjusts the focus in the y direction. Therefore, when the nozzle connection line 260 is not perpendicular to the optical axis 240 of the ink droplet observer lens, observing the ink droplets ejected from different nozzles requires constant position adjustment of the inkjet print head 130 or the ink droplet observer 140, which increases detection time. Operation reduces detection efficiency.
  • the inkjet print head moves in the x direction, and the ink drop observer moves in the y direction.
  • the automatic detection of a single row of nozzles is realized by the main control computer controlling the movement of the inkjet print head and the ink drop observer, as shown in Figure 5 is a schematic diagram of a position calibration method for an ink drop observer. This embodiment includes the following steps:
  • Rotate the ink droplet observer according to the angle value ⁇ When the angle value is greater than 0, rotate the ink droplet observer clockwise; when the angle value is less than 0, rotate the ink droplet observer counterclockwise so that the single row of nozzles are connected to the ink droplet observer.
  • the optical axis of the drop observer lens is vertical. Therefore, when automatically detecting a single row of nozzles, there is no need to move the ink drop observer or the inkjet print head for focusing operations, thus enabling rapid and automatic detection of ink droplets ejected from a single row of nozzles.
  • the inkjet print head moves in the x direction and y direction, the ink drop observer does not move, and the automatic detection of a single row of nozzles is implemented by the main control computer controlling the movement of the inkjet print head.
  • This embodiment includes the following steps:
  • Rotate the ink droplet observer according to the angle value ⁇ When the angle value is greater than 0, rotate the ink droplet observer clockwise; when the angle value is less than 0, rotate the ink droplet observer counterclockwise so that the single row of nozzles are connected to the ink droplet observer.
  • the optical axis of the drop observer lens is vertical.
  • the ink drop observer moves in the x-direction and y-direction, the inkjet print head does not move, and the automatic detection of a single row of nozzles is realized by the main control computer controlling the movement of the ink drop observer.
  • This embodiment includes the following steps:
  • Rotate the ink droplet observer according to the angle value ⁇ When the angle value is greater than 0, rotate the ink droplet observer clockwise; when the angle value is less than 0, rotate the ink droplet observer counterclockwise so that the single row of nozzles are connected to the ink droplet observer.
  • the optical axis of the drop observer lens is vertical.

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  • Ink Jet (AREA)

Abstract

一种墨滴观测仪位置校准方法及位置校准系统，位置校准方法包括：确定待检测的喷墨打印头（130）；控制喷墨打印头（130）的起始端喷孔（1601）喷射第一墨滴（1501）；调整喷墨打印头（130）和墨滴观测仪（140）的相对位置，使第一墨滴（1501）出现在墨滴观测仪（140）视野范围；控制喷墨打印头（130）的末端喷孔（1620）喷射第二墨滴（1520）；沿x方向和y方向移动墨滴观测仪（140）、喷墨打印头（130）,使第二墨滴（1520）在墨滴观测仪（140）观测视野内清晰可见，并精确记录墨滴观测仪（140）或喷墨打印头（130）沿x方向的移动距离Ax和沿y方向的移动距离Ay；根据Ax和Ay计算墨滴观测仪（140）调节角度值；根据所述角度值顺时针或逆时针转动墨滴观测仪（140）,使单排喷孔连线与墨滴观测仪（140）镜头光轴垂直。本墨滴观测仪位置校准方法及位置校准系统具有计算简便、精确度高的优点。

Description

一种墨滴观测仪位置校准方法及系统 技术领域
本发明涉及喷墨打印的精密应用领域，尤其是涉及一种墨滴观测仪位置校准方法及系统。
背景技术
在喷墨打印的精密应用中，需要知道在某个驱动电压波形下，每个喷孔喷出墨滴的体积，以便于对喷墨打印图案的优化。因此，在进行打印前需要使用墨滴观测仪对每个喷孔的喷墨状态进行检测。
由于喷头的物理尺寸远大于单个喷孔尺寸及墨滴观测仪的视野范围，因此，在检测一排喷孔的状态时，需要对喷头或墨滴观测仪进行移动。当每排喷孔的位置连线与墨滴观测仪不完全垂直时，大范围的移动喷头或墨滴观测仪会造成后续喷孔喷出的墨滴超出墨滴观测仪的观测景深范围。此外，墨滴观测仪的标定通常是用墨滴观测仪观测已知长度的标定物，利用标定物的实际长度与墨滴观测仪视野中像素距离的对应关系进行比例换算。但是当每排喷孔的位置连线与墨滴观测仪不完全垂直时，其对应关系有一定误差，从而造成测量出的墨滴体积和速度等参数值产生偏差。
因此，为了保证墨滴观测仪测量数据的准确性，需要对墨滴观测仪和喷头的相对位置进行校准。
发明内容
本发明的目的就是为了克服上述现有技术存在的缺陷而提供一种计算简单、计算精度高的墨滴观测仪位置校准方法。
本发明的目的可以通过以下技术方案来实现：
一种墨滴观测仪位置校准方法，包括以下步骤：
确定待检测的喷墨打印头；
控制喷墨打印头的起始端喷孔喷射第一墨滴；
调整喷墨打印头和墨滴观测仪的相对位置，使第一墨滴出现在墨滴观测仪视野范围；
控制喷墨打印头的末端喷孔喷射第二墨滴；
沿x方向和y方向移动墨滴观测仪、喷墨打印头，使第二墨滴在墨滴观测仪观测视野内清晰可见，并精确记录墨滴观测仪或喷墨打印头沿x方向的移动距离Δx和沿y方向的移动距离Δy；
根据Δx和Δy计算墨滴观测仪调节角度值；
根据墨滴观测仪调节角度值顺时针或逆时针转动墨滴观测仪，使单排喷孔连线与墨滴观测仪镜头光轴垂直。
所述Δx和Δy取值范围包括正数、负数、零。
所述墨滴观测仪调节角度值计算公式为：
Figure PCTCN2022127842-appb-000001
其中，θ为墨滴观测仪调节角度值。
所述墨滴观测仪调节角度值大于0时，顺时针转动墨滴观测仪；墨滴观测仪调节角度值小于0时，逆时针转动墨滴观测仪。
所述移动墨滴观测仪、喷墨打印头为移动二者其中之一或同时移动二者，且在同一方向上仅移动二者其中之一。
一种墨滴观测仪位置校准系统，包括：
主控计算机，所述主控计算机执行以下步骤：将打印数据发送到打印控制器，控制调整喷墨打印头和墨滴观测仪的相对位置，使第一墨滴出现在墨滴观测仪视野范围，控制墨滴观测仪、喷墨打印头沿x方向和y方向移动，使第二墨滴在墨滴观测仪观测视野内清晰可见，精确记录墨滴观测仪或喷墨打印头沿x方向的移动距离Δx和沿y方向的移动距离Δy，并根据Δx和Δy计算墨滴观测仪调节角度值，根据墨滴观测仪调节角度值控制墨滴观测仪顺时针或逆时针转动，使单排喷孔连线与墨滴观测仪镜头光轴垂直；
打印控制器，所述打印控制器驱动喷墨打印头喷墨，同时将打印驱动信号发送到墨滴观测仪；
喷墨打印头，所述喷墨打印头根据打印控制器的控制起始端喷孔喷射第一墨滴，控制末端喷孔喷射第二墨滴；
墨滴观测仪，所述墨滴观测仪根据打印驱动信号对喷射墨滴进行同步拍摄。
所述Δx和Δy取值范围包括正数、负数、零。
所述墨滴观测仪调节角度值计算公式为：
Figure PCTCN2022127842-appb-000002
其中，θ为墨滴观测仪调节角度值。
所述墨滴观测仪调节角度值大于0时，主控计算机控制墨滴观测仪顺时针转动；墨滴观测仪调节角度值小于0时，主控计算机控制墨滴观测仪逆时针转动。
所述主控计算机控制墨滴观测仪、喷墨打印头沿x方向和y方向移动为移动二者其中之一或同时移动二者，且在同一方向上仅移动二者其中之一。
与现有技术相比，本发明具有以下有益效果：
(1)本发明只需要进行简单的三角计算即可得到对应的墨滴观测仪角度调整值，计算方法简便，计算量小。
(2)本发明在一个方向上只对墨滴观测仪和喷墨打印头其中之一进行调整，不仅调整方法简单，还简化了计算。
(3)采用本发明方法对墨滴观测仪位置进行校准后，自动检测单排喷孔时无需再移动墨滴观测仪或喷墨打印头进行对焦操作，从而可以实现单排喷孔喷射墨滴的快速自动检测，提高了检测效率。
附图说明
图1为本发明的方法流程图；
图2为墨滴观测系统示意图；
图3为单排喷孔检测过程示意图；
图4为喷孔位置连线与墨滴观测仪镜头光轴偏离示意图；
图5为墨滴观测仪位置校准方法示意图，其中(a)为起始端喷孔喷射墨滴位置调整示意图，(b)为末端喷孔喷射墨滴位置调整示意图；
图6为实施例1的墨滴观测仪位置校准方法角度计算示意图；
图7为实施例2的墨滴观测仪位置校准方法角度计算示意图；
图8为实施例3的墨滴观测仪位置校准方法角度计算示意图。
具体实施方式
下面结合附图和具体实施例对本发明进行详细说明。本实施例以本发明技术方案为前提进行实施，给出了详细的实施方式和具体的操作过程，但本发明的保护范围不限于下述的实施例。
本发明提供一种墨滴观测位置校准方法，用于喷墨打印中的喷孔状态自动检测。如图2所示为常用的墨滴观测系统，包含主控计算机110，喷印控制器120，喷墨打印头130和墨滴观测仪140。主控计算机110将打印数据传输到喷印控制器120，打印控制器120驱动喷墨打印头130进行喷墨，喷射出墨滴150，同时，打印控制器120将打印驱动信号发送到墨滴观测仪140，墨滴观测仪140根据打印驱动信号对喷射墨滴150进行同步拍摄。主控计算机110控制墨滴观测仪140对喷射墨滴150拍摄信息进行特征测量及分析。
对于高精密的喷墨打印应用场景，需要获取每个喷孔喷射墨滴的体积、速度以及喷射角度等特征信息，以进行喷墨打印工艺的进一步优化控制。为了提高检测效率，通常对喷头的每一排喷孔进行自动检测。如图3所示，墨滴观测仪140首先对喷墨打 印头130起始端的喷孔1601喷射的墨滴1501进行测量。沿x方向移动喷墨打印头130(或墨滴观测仪140)，测量喷孔1602喷射的墨滴1502，继续沿x方向移动喷墨打印头130(或墨滴观测仪140)，对每个喷孔喷射的墨滴依次进行检测，直至检测完最末端喷孔1620喷射的墨滴1520。
由于喷墨打印头与墨滴观测仪的安装误差，或喷墨打印头中喷孔本身分布不均，如图4所示，会造成单排喷孔连线260与墨滴观测仪镜头光轴240不垂直。调整喷墨打印头130和墨滴观测仪140的相对位置，首先对第160排喷孔起始端的第1601号喷孔喷射的墨滴进行检测，检测第160排的其他喷孔，如喷孔1620，需要沿x方向移动喷墨打印头130或墨滴观测仪140。当喷孔连线260与墨滴观测仪镜头光轴240不垂直时，x方向的移动会使第160排其他喷孔喷射墨滴的图像超出墨滴观测仪140的检测景深，从而需要对喷墨打印头130或墨滴观测仪140进行y方向的调整对焦。因此，当喷孔连线260与墨滴观测仪镜头光轴240不垂直时，观测不同喷孔喷射的墨滴需要不断对喷墨打印头130或墨滴观测仪140进行位置调整，增加了检测操作降低了检测效率。
实施例1
在一种实施例中，喷墨打印头作x方向运动，墨滴观测仪作y方向运动，单排喷孔的自动检测由主控计算机控制喷墨打印头及墨滴观测仪运动实现，图5为一种墨滴观测仪位置校准方法示意图。本实施例包括以下步骤：
确定待检测的喷墨打印头130；
控制喷墨打印头130的起始端喷孔1601喷射第一墨滴1501；
调整喷墨打印头130与墨滴观测仪140的相对位置，使喷墨打印头起始端喷孔1601喷射的墨滴1501出现在墨滴观测仪视野范围内，记录下此时的喷墨打印头130的坐标(xh，yh)以及墨滴观测仪140的坐标(xw，yw)；
控制喷墨打印头的末端喷孔1620喷射第二墨滴1520；
沿x方向移动喷墨打印头130，使喷墨打印头130末端的喷孔1620喷射的墨滴1520位于墨滴观测仪140的视野范围，沿y方向调整墨滴观测仪的位置对焦，使墨滴1520在观测视野内清晰可见，记录下此时喷墨打印头的坐标(xh’，yh)以及墨滴观测仪的坐标(xw，yw’)；
以(xh，yh)、(xh’，yh)及(xh’，yw’)三点为顶点做三角形，如图6所示，三角形的直角边长度Δx及Δy分别为喷墨打印头130沿x方向的运动距离和墨滴观测仪140沿y方向的运动距离，根据Δx及Δy值可计算出墨滴观测仪140需要调节的角度θ；
根据所述角度值θ转动墨滴观测仪，当角度值大于0时，顺时针转动墨滴观测仪；角度值小于0时，逆时针转动墨滴观测仪，使单排喷孔连线与墨滴观测仪镜头光轴垂直，因此，自动检测单排喷孔时无需再移动墨滴观测仪或喷墨打印头进行对焦操作，从而可以实现单排喷孔喷射墨滴的快速自动检测。
实施例2
在另一种实施例中，喷墨打印头作x方向运动和y方向运动，墨滴观测仪不运动，单排喷孔的自动检测由主控计算机控制喷墨打印头运动实现。本实施例包括以下步骤：
确定待检测的喷墨打印头130；
控制喷墨打印头130的起始端喷孔1601喷射第一墨滴1501；
调整喷墨打印头130与墨滴观测仪140的相对位置，使喷墨打印头起始端喷孔1601喷射的墨滴1501出现在墨滴观测仪视野范围内，记录下此时的喷墨打印头130的坐标(xh，yh)；
控制喷墨打印头的末端喷孔1620喷射第二墨滴1520；
沿x方向移动喷墨打印头130，使喷墨打印头130末端的喷孔1620喷射的墨滴1520位于墨滴观测仪140的视野范围，记录下此时喷墨打印头的坐标(xh’，yh)，沿y方向调整移动喷墨打印头130的位置对焦，使墨滴1520在观测视野内清晰可见，记录下此时喷墨打印头的坐标(xh’，yh’)；
以(xh，yh)、(xh’，yh)及(xh’，yh’)三点为顶点做三角形，如图7所示，三角形的直角边长度Δx及Δy分别为喷墨打印头130沿x方向的运动距离和沿y方向的运动距离，根据Δx及Δy值可计算出墨滴观测仪140需要调节的角度θ；
根据所述角度值θ转动墨滴观测仪，当角度值大于0时，顺时针转动墨滴观测仪；角度值小于0时，逆时针转动墨滴观测仪，使单排喷孔连线与墨滴观测仪镜头光轴垂直。
实施例3
在另一种实施例中，墨滴观测仪作x方向运动和y方向运动，喷墨打印头不运动，单排喷孔的自动检测由主控计算机控制墨滴观测仪运动实现。本实施例包括以下步骤：
确定待检测的喷墨打印头130；
控制喷墨打印头130的起始端喷孔1601喷射第一墨滴1501；
调整喷墨打印头130与墨滴观测仪140的相对位置，使喷墨打印头起始端喷孔1601喷射的墨滴1501出现在墨滴观测仪视野范围内，记录下此时的墨滴观测仪140的坐标(xw，yw)；
控制喷墨打印头的末端喷孔1620喷射第二墨滴1520；
沿x方向移动墨滴观测仪140，使喷墨打印头130末端的喷孔1620喷射的墨滴1520位于墨滴观测仪140的视野范围，记录下此时墨滴观测仪的坐标(xw’，yw)，沿y方向调整墨滴观测仪140的位置对焦，使墨滴1520在观测视野内清晰可见，记录下此时墨滴观测仪的坐标(xw’，yw’)；
以(xw，yw)、(xw’，yw)及(xw’，yw’)三点为顶点做三角形，如图8所示，三角形的直角边长度Δx及Δy分别为墨滴观测仪140沿x方向的运动距离和沿y方向的运动距离，根据Δx及Δy值可计算出墨滴观测仪140需要调节的角度θ；
根据所述角度值θ转动墨滴观测仪，当角度值大于0时，顺时针转动墨滴观测仪；角度值小于0时，逆时针转动墨滴观测仪，使单排喷孔连线与墨滴观测仪镜头光轴垂直。
以上详细描述了本发明的较佳具体实施例。应当理解，本领域的普通技术人员无需创造性劳动就可以根据本发明的构思作出诸多修改和变化。因此，凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案，皆应在由权利要求书所确定的保护范围内。

Claims (10)

  1. 一种墨滴观测仪位置校准方法，其特征在于，包括以下步骤：
    确定待检测的喷墨打印头；
    控制喷墨打印头的起始端喷孔喷射第一墨滴；
    调整喷墨打印头和墨滴观测仪的相对位置，使第一墨滴出现在墨滴观测仪视野范围；
    控制喷墨打印头的末端喷孔喷射第二墨滴；
    沿x方向和y方向移动墨滴观测仪、喷墨打印头，使第二墨滴在墨滴观测仪观测视野内清晰可见，并精确记录墨滴观测仪或喷墨打印头沿x方向的移动距离Δx和沿y方向的移动距离Δy；
    根据Δx和Δy计算墨滴观测仪调节角度值；
    根据墨滴观测仪调节角度值顺时针或逆时针转动墨滴观测仪，使单排喷孔连线与墨滴观测仪镜头光轴垂直。
  2. 根据权利要求1所述的一种墨滴观测仪位置校准方法，其特征在于，所述Δx和Δy取值范围包括正数、负数、零。
  3. 根据权利要求1所述的一种墨滴观测仪位置校准方法，其特征在于，所述墨滴观测仪调节角度值计算公式为：
    Figure PCTCN2022127842-appb-100001
    其中，θ为墨滴观测仪调节角度值。
  4. 根据权利要求1所述的一种墨滴观测仪位置校准方法，其特征在于，所述墨滴观测仪调节角度值大于0时，顺时针转动墨滴观测仪；墨滴观测仪调节角度值小于0时，逆时针转动墨滴观测仪。
  5. 根据权利要求1所述的一种墨滴观测仪位置校准方法，其特征在于，所述移动墨滴观测仪、喷墨打印头为移动二者其中之一或同时移动二者，且在同一方向上仅移动二者其中之一。
  6. 一种墨滴观测仪位置校准系统，其特征在于，包括：
    主控计算机，所述主控计算机执行以下步骤：将打印数据发送到打印控制器，控制调整喷墨打印头和墨滴观测仪的相对位置，使第一墨滴出现在墨滴观测仪视野范围，控制墨滴观测仪、喷墨打印头沿x方向和y方向移动，使第二墨滴在墨滴观测仪观测视野内清晰可见，精确记录墨滴观测仪或喷墨打印头沿x方向的移动距离Δx和沿y方向的移动距离Δy，并根据Δx和Δy计算墨滴观测仪调节角度值，根据墨滴观测仪调 节角度值控制墨滴观测仪顺时针或逆时针转动，使单排喷孔连线与墨滴观测仪镜头光轴垂直；
    打印控制器，所述打印控制器驱动喷墨打印头喷墨，同时将打印驱动信号发送到墨滴观测仪；
    喷墨打印头，所述喷墨打印头根据打印控制器的控制起始端喷孔喷射第一墨滴，控制末端喷孔喷射第二墨滴；
    墨滴观测仪，所述墨滴观测仪根据打印驱动信号对喷射墨滴进行同步拍摄。
  7. 根据权利要求6所述的一种墨滴观测仪位置校准系统，其特征在于，所述Δx和Δy取值范围包括正数、负数、零。
  8. 根据权利要求6所述的一种墨滴观测仪位置校准系统，其特征在于，所述墨滴观测仪调节角度值计算公式为：
    Figure PCTCN2022127842-appb-100002
    其中，θ为墨滴观测仪调节角度值。
  9. 根据权利要求6所述的一种墨滴观测仪位置校准系统，其特征在于，所述墨滴观测仪调节角度值大于0时，主控计算机控制墨滴观测仪顺时针转动；墨滴观测仪调节角度值小于0时，主控计算机控制墨滴观测仪逆时针转动。
  10. 根据权利要求6所述的一种墨滴观测仪位置校准系统，其特征在于，所述主控计算机控制墨滴观测仪、喷墨打印头沿x方向和y方向移动为移动二者其中之一或同时移动二者，且在同一方向上仅移动二者其中之一。
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