WO2017016202A1 - 喷墨打印喷头、喷墨打印方法和喷墨打印设备 - Google Patents

喷墨打印喷头、喷墨打印方法和喷墨打印设备 Download PDF

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Publication number
WO2017016202A1
WO2017016202A1 PCT/CN2016/070985 CN2016070985W WO2017016202A1 WO 2017016202 A1 WO2017016202 A1 WO 2017016202A1 CN 2016070985 W CN2016070985 W CN 2016070985W WO 2017016202 A1 WO2017016202 A1 WO 2017016202A1
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Prior art keywords
sub
nozzles
ink
pixels
nozzle
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PCT/CN2016/070985
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English (en)
French (fr)
Inventor
赵德江
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京东方科技集团股份有限公司
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Priority to US15/123,395 priority Critical patent/US9987844B2/en
Publication of WO2017016202A1 publication Critical patent/WO2017016202A1/zh

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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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/1433—Structure of nozzle plates
    • 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
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2121—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter
    • B41J2/2125—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter by means of nozzle diameter selection
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04593—Dot-size modulation by changing the size of the drop
    • 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
    • B41J2/135—Nozzles
    • 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
    • B41J2/135—Nozzles
    • B41J2/145—Arrangement thereof
    • B41J2/155—Arrangement thereof for line printing
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14475—Structure thereof only for on-demand ink jet heads characterised by nozzle shapes or number of orifices per chamber

Definitions

  • the present invention relates to the field of display technology, and in particular to an ink jet print head, an ink jet printing method using the same, and an ink jet printing apparatus having the ink jet print head.
  • inkjet printing methods to produce OLED display products has the advantages of high material utilization rate and short manufacturing time. Therefore, more and more manufacturers use inkjet printing methods to make OLED display products.
  • the inkjet printing requirements for OLED display products are accurate to every pixel, so the accuracy of printing ink droplets is relatively high during inkjet printing. At the same time, in order to control the precision of the printed film thickness, precise control is required for the amount of ink that is driven into each pixel.
  • the print head In inkjet printing equipment, the print head is the most important part.
  • the print head is usually provided with a plurality of nozzles, and the plurality of nozzles are arranged in one or more rows. Printing of a certain film layer on the OLED display substrate is achieved by moving the heads in parallel during printing.
  • the volume of the ink droplets discharged from the plurality of nozzles is also the same.
  • the volume of the ink droplets ejected from the nozzle can only slightly fluctuate around a fixed value. Therefore, the total volume of the ink droplets actually ejected by the nozzle during the printing process can only be a substantially integral multiple of a fixed value. This results in the inability to flexibly adjust the thickness of the film layer formed on the OLED display substrate, resulting in inaccurate control of the thickness of the film layer formed by printing, which ultimately affects the display performance of the OLED display product.
  • the present invention is directed to the above-described technical problems existing in the prior art, and provides an ink jet printing head, an ink jet printing method using the same, and an ink jet printing apparatus including the same.
  • the ink jet print head enables each nozzle group to eject a desired volume of ink, thereby enabling the total volume of ink sprayed by each nozzle group to pixels at different positions. More accurate. Thus, not only can the thickness of the film layer formed by ink jet printing be flexibly controlled and adjusted, but also the accuracy of the film thickness formed by ink jet printing can be greatly improved.
  • the present invention provides an ink jet printing head comprising a cavity for accommodating ink, and a plurality of nozzle groups are disposed on a sidewall of the cavity for ejecting ink, each of the nozzle groups for respectively different The pixels in the position are inkjet printed.
  • Each of the nozzle groups includes a plurality of sub-nozzles, and each of the plurality of sub-nozzles in the nozzle group is capable of ejecting different volumes of ink.
  • a plurality of the sub-nozzles in each of the nozzle groups have different gauge sizes.
  • a plurality of the nozzle groups are arranged in a row or a plurality of columns parallel to each other, and a plurality of the sub-nozzles in each of the nozzle groups are arranged in a line.
  • the sub-nozzles having the same size are arranged in a row, and the sub-nozzles in each column are parallel to each other such that the sub-nozzles in the plurality of the nozzle groups are arranged in a matrix.
  • the spacing between any two adjacent columns of the sub-nozzles is equal, and in each column of the sub-nozzles, the spacing between any two adjacent sub-nozzles equal.
  • the nozzle group is configured to perform inkjet printing on pixels to be printed in the pixel array.
  • the number of the sub-nozzles in each column is equal to the number of the pixels in each column, and the spacing between any two adjacent sub-nozzles in each column of the sub-nozzles is equal to any adjacent one of the pixels in each column.
  • the column nozzle group is used for inkjet printing a column of pixels, and then the column nozzle group is capable of sequentially aligning the pixels in each column of the pixel array by parallel movement Perform inkjet printing;
  • the plurality of columns of nozzle groups are used for inkjet printing of a plurality of columns of pixels in the pixel array at a time.
  • the inkjet printhead further comprises a calculation module and a control module.
  • the calculating module is configured to calculate, according to a total volume of ink required for each pixel to be printed, and an ink volume that can be ejected by each of the sub-nozzles in the nozzle group, to calculate the nozzle group corresponding to printing the pixel Different combinations of the sub-nozzles are sent to the control module.
  • the control module is configured to control the child according to the combined manner The amount of ink discharged from the nozzle.
  • a plurality of partitions are further disposed inside the sidewall of the cavity for inkjet, the spacers being disposed between any adjacent two rows of the sub-nozzles, or the spacers
  • the interval area between the nozzle groups is uniformly disposed, and the area where the nozzle group is located is divided into a plurality of equal-sized areas.
  • the partition completely separates the cavity into a plurality of sub-cavities, or the partition partitions a bottom of the cavity adjacent to the inkjet sidewall into a plurality of sub-cavities, a plurality of The top of the sub-cavity remote from the inkjet sidewall is in communication.
  • the present invention also provides an ink jet printing apparatus comprising the above ink jet printing head.
  • the present invention also provides an inkjet printing method using the above-described inkjet printing head, comprising: first, determining a total volume of ink required for pixels to be printed at different positions; and then, printing according to pixels to be printed at different positions Calculating a combination of different sub-nozzles in the nozzle group of the pixel to be printed at each of the positions, and a total volume of ink and a volume of ink that can be ejected by each of the sub-nozzles in the nozzle group; The sub-nozzle inkjet printing is controlled according to the combined manner.
  • a plurality of sub-nozzles having different ejection volumes are disposed in each nozzle group, so that each nozzle group can eject a required volume.
  • the ink so that the total volume of ink droplets sprayed onto the different points of the nozzle group can be more accurate.
  • the thickness of the film layer formed by ink jet printing be flexibly controlled and adjusted, but also the accuracy of the film thickness formed by ink jet printing can be greatly improved.
  • the ink jet printing apparatus since the above-described ink jet printing head is employed, the ink jet printing apparatus can flexibly control and adjust the thickness of the printing film layer, thereby improving the precision of ink jet printing.
  • FIG. 1 is a schematic structural view of an ink jet printing head according to a first embodiment of the present invention
  • Figure 2 is a partial enlarged view of the ink jet printing head shown in Figure 1;
  • FIG. 3 is a schematic diagram showing a correspondence relationship between a sub-nozzle and a pixel in a pixel array in the inkjet print head shown in FIG. 1;
  • Figure 4 is a cross-sectional view showing the structure of a separator in the ink jet printing head according to the first embodiment of the present invention
  • Figure 5 is a cross-sectional view showing the structure of another separator in the ink jet printing head according to the first embodiment of the present invention.
  • Figure 6 is a schematic view showing the structure of an ink jet printing head according to a second embodiment of the present invention.
  • an inkjet printing head provided by the present invention and inkjet printing using the inkjet printing head are further described in detail below with reference to the accompanying drawings and specific embodiments.
  • a method and an inkjet printing apparatus having the inkjet printhead are further described in detail below with reference to the accompanying drawings and specific embodiments.
  • the embodiment provides an inkjet printing head, as shown in FIG. 1 and FIG. 2, including a cavity 1 for accommodating ink, and a plurality of nozzle groups 2 are disposed on a sidewall of the cavity 1 for inkjet.
  • Each nozzle group 2 is used for inkjet printing of pixels at different positions, and each nozzle group 2 includes a plurality of sub-nozzles 21 (three sub-nozzles in this embodiment), and a plurality of sub-groups 2
  • the nozzle 21 is capable of ejecting different volumes of ink.
  • each nozzle group 2 can be ejected with a desired volume of ink droplets, so that each nozzle group 2 is sprayed at a different position.
  • the total volume of ink drops can be more precise. Therefore, not only the thickness of the film layer formed by inkjet printing can be flexibly controlled and adjusted, but also the accuracy of the film thickness formed by inkjet printing can be greatly improved.
  • the plurality of sub-nozzles 21 in each nozzle group 2 have different specifications.
  • the arrangement is such that a plurality of sub-nozzles 21 in each nozzle group 2 are capable of ejecting different volumes of ink droplets.
  • a plurality of nozzle groups 2 are arranged in a row along the longitudinal direction in the drawing, and a plurality of sub-nozzles 21 in each nozzle group 2 are arranged in a line along the lateral direction in the drawing.
  • a row of nozzle groups 2 can form a matrix composed of sub-nozzles 21 in which sub-nozzles 21 of the same size are arranged in a row and each column of nozzles 21 are parallel to each other.
  • the spacing between any two adjacent rows of sub-nozzles 21 is equal, and the spacing between any adjacent two sub-nozzles 21 in each column of sub-nozzles 21 (ie, the longitudinal spacing in the figures) is equal.
  • a plurality of nozzle groups 2 are used for inkjet printing of the pixels 31 to be printed in the pixel array 3. Since each of the nozzle groups 2 includes a plurality of sub-nozzles 21, the amount of ejection of each of the pixels 31 can be accurately controlled, thereby improving the printing efficiency of the pixels 31 in the pixel array 3.
  • the number of the column nozzles 21 is equal to the number of the columns of the pixels 31, and the spacing between any two adjacent nozzles 21 in each of the column nozzles 21 (ie, the longitudinal pitch in the drawing) It is equal to the spacing between any two adjacent pixels 31 in each column of pixels 31 (i.e., the longitudinal spacing in the drawing).
  • a row of nozzle groups 2 is included. The array of nozzles 2 is used for inkjet printing of a column of pixels 31. Then, the column nozzle group 2 can perform inkjet printing on each column of pixels 31 in the pixel array 3 in order by parallel movement.
  • one row of nozzle groups 2 performs inkjet printing on one column of pixels 31 in two cases.
  • One case is that the lateral width of the nozzle group including the plurality of sub-nozzles 21 is less than or equal to the lateral width of one pixel 31.
  • each of the nozzle groups 2 in the row of nozzle groups 2 can be in one-to-one correspondence with the respective pixels 31 in the column of pixels 31, so that the ink droplets ejected from the plurality of sub-nozzles 21 in the nozzle group 2 can be ensured. It can fall into a pixel 31 corresponding thereto.
  • a plurality of sub-nozzles 21 in each nozzle group 2 can be simultaneously ejected at the time of printing, thereby achieving simultaneous printing of the respective pixels 31 in one column of pixels 31.
  • the lateral width of the nozzle group 2 including the plurality of sub-nozzles 21 is larger than the lateral width of one pixel 31.
  • each of the sub-nozzles 21 in the column nozzle group 2 cannot simultaneously correspond to each of the pixels 31 in one column of pixels 31. This means that the ink droplets ejected from the plurality of sub-nozzles 21 in the nozzle group 2 cannot fall into one pixel 31 corresponding thereto at the same time.
  • each of the column nozzles 21 in the column nozzle group 2 is required to be positionally matched with the column of pixels 31 at the time of printing, and inkjet printing is performed at the time of position matching.
  • the printing process of each of the column nozzles 21 can be realized by moving the ink jet printing heads in parallel. Both of the above cases enable inkjet printing of a column of pixels 31 in the pixel array 3 efficiently and quickly, and precise control of the ejection amount of each pixel 31 can be performed.
  • the column nozzle group 2 can sequentially print the columns of pixels 31 in the pixel array 3 by parallel movement.
  • the inkjet printhead further includes a calculation module and a control module (not shown) for calculating the total volume of ink required for each pixel 31 to be printed and each sub-nozzle in the nozzle group 2. 21, the volume of ink that can be ejected, calculating the combination of different sub-nozzles 21 in the nozzle group 2 for printing the pixel 31, and transmitting the combination to the control module; the control module is for controlling the sub-nozzle 21 according to the combination mode The amount of inkjet.
  • each nozzle group 2 includes three sub-nozzles 21, and the volume of ink droplets that can be ejected by three sub-nozzles 21 at one time are 30 pL, 20 pL, and 10 pL, respectively, and the ejection volume of each sub-nozzle 21 can be Fine-tuning within the range of plus or minus 2pL.
  • the arrangement of the calculation module and the control module enables the sub-nozzles 21 to be properly combined during ink ejection, thereby making the ejection amount easier to adjust and control, thereby improving the accuracy of the ejection amount.
  • the nozzle group 2 may not perform ink-jet printing during printing. Since each of the sub-nozzles 21 in the nozzle group 2 can be independently controlled, the above process can be easily realized.
  • a plurality of partitions 11 may be disposed inside the side wall of the cavity 1 for inkjet, and the partition plate 11 is disposed between any adjacent two rows of sub-nozzles 21. .
  • the partition 11 is disposed such that the ink supply between the sub-nozzles 21 of different sizes does not affect each other. In this way, the ink supply can be easily monitored, and printing can be ensured smoothly.
  • the partition plate 11 may be evenly disposed in the interval area between the nozzle groups 2, and the area in which the nozzle group 2 is located is divided into a plurality of equal-sized areas. With this arrangement, it is possible to avoid the influence of the ink supply between the nozzle groups 2 in the respective different regions at the time of ink ejection. In this way, the ink supply can be easily monitored, and printing can be ensured smoothly.
  • the partition 11 completely separates the cavity 1 into a plurality of sub-cavities 12 (shown in Figure 4).
  • the tops of the plurality of sub-cavities 12 remote from the inkjet sidewalls may also be in communication (as shown in Figure 5). Both of these methods allow the ink supply between the separated areas to not interact with each other, making it easy to monitor the ink supply.
  • the embodiment further provides an inkjet printing method using the inkjet print head, comprising: first, determining the total volume of ink required for pixels to be printed at different positions. Then, according to the total volume of ink required for the pixels to be printed at different positions and the volume of ink that can be ejected by each sub-nozzle in the nozzle group, the combination manner of different sub-nozzles in the nozzle group of the pixel to be printed at each position is calculated. Finally, the sub-nozzle inkjet printing is controlled according to the combination. With this printing method, accurate printing of pixels at respective positions can be realized.
  • the ink jet printing head of this embodiment includes a plurality of nozzle groups 2 which are parallel to each other.
  • the nozzle group 2 in the multi-row nozzle group 2 corresponds to each pixel in the pixel array, and the multi-row nozzle group 2 can perform ink-jet printing on all pixels in the pixel array at a time.
  • the multi-row nozzle group 2 can simultaneously perform ink-jet printing, and finish printing of all the pixels in the pixel array at a time, thereby further improving printing efficiency.
  • the lateral width of the nozzle group 2 including the plurality of sub-nozzles 21 is less than or equal to the lateral width of one pixel.
  • the matrix formed by the multi-row nozzle group 2 can be in one-to-one correspondence with the pixels. Therefore, when all the sub-nozzles 21 are simultaneously printed, printing of all the pixels can be completed at one time, thereby improving the printing efficiency of the pixels.
  • the nozzle group 2 including the plurality of sub-nozzles 21 The lateral width can also be greater than the lateral width of one pixel.
  • the matrix formed by the multi-row nozzle group 2 cannot be in one-to-one correspondence with the pixels. Therefore, printing of all pixels cannot be completed at one time.
  • each of the column nozzles 21 in the nozzle group 2 can be sequentially printed by moving the ink jet printing heads in parallel. In this way, the number of printings is at most equal to the number of sub-nozzles 21 in the nozzle group 2.
  • the other structure of the ink jet printing head in this embodiment is the same as that of the first embodiment, and the printing method using the ink jet printing head of the present embodiment is also the same as that of the first embodiment, and details are not described herein again.
  • the embodiment provides an inkjet printing apparatus including the inkjet printing head of the first or second embodiment.
  • the ink jet printing apparatus is capable of flexibly controlling and adjusting the thickness of the printing film layer, thereby improving the ink jet printing accuracy of the ink jet printing apparatus.

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  • Ink Jet (AREA)

Abstract

提供一种喷墨打印喷头及其喷墨打印方法和喷墨打印设备。该喷墨打印喷头包括腔体（1），在腔体的用于喷墨的侧壁上设置有多个喷嘴组（2），各个喷嘴组用于分别对不同的位置点进行喷墨打印，每个喷嘴组均包括多个子喷嘴（21），每个喷嘴组中的多个子喷嘴能够喷出的墨水滴的体积不同。通过在每个喷嘴组中设置多个喷墨体积不同的子喷嘴，能使每个喷嘴组都能喷出要求体积的墨水滴，从而使各个喷嘴组喷到不同位置点上的墨水滴的总体积能够更加精确，进而不仅使喷墨打印形成的膜层的厚度能够灵活控制和调整，而且使喷墨打印形成的膜层厚度的精度提高。

Description

喷墨打印喷头、喷墨打印方法和喷墨打印设备 技术领域
本发明涉及显示技术领域，具体地，涉及一种喷墨打印喷头、一种使用该喷墨打印喷头的喷墨打印方法以及一直具有该喷墨打印喷头的喷墨打印设备。
背景技术
使用喷墨打印方法制作OLED显示产品具有材料利用率高，制成时间短等优点。因此，越来越多的厂家采用喷墨打印的方法制作OLED显示产品。
对OLED显示产品的喷墨打印要求精确到每一个像素，所以在喷墨打印过程中对打印墨滴的精度要求比较高。同时，为了控制打印膜厚的精准，对于打入每个像素的墨水量，也需要精准控制。
在喷墨打印设备中，打印喷头是最重要的部分。打印喷头上通常设置有多个喷嘴，多个喷嘴排成一排或多排。打印时通过使喷头平行移动来实现OLED显示基板上某个膜层的打印。
通常情况下，由于喷头上的多个喷嘴具有相同的规格尺寸，所以多个喷嘴吐出的墨滴的体积大小也是相同的。此外，喷嘴吐出的墨滴的体积只能在固定值附近微小波动。因此，实际在打印过程中喷嘴吐出的墨滴的总体积只能是固定值的大致整数倍。这就导致打印形成在OLED显示基板上的膜层的厚度无法灵活调整，从而导致打印形成的膜层的厚度无法精确控制，最终影响OLED显示产品的显示性能。
发明内容
本发明针对现有技术中存在的上述技术问题，提供一种喷墨打印喷头、使用该喷墨打印喷头的喷墨打印方法和包括该喷墨打印喷头的喷墨打印设备。该喷墨打印喷头能使每个喷嘴组都能够喷出要求体积的墨水，从而使各个喷嘴组喷到不同位置像素上的墨水的总体积能 够更加精确。这样，不仅使喷墨打印形成的膜层的厚度能够灵活控制和调整，而且使喷墨打印形成的膜层厚度的精度能够大大提高。
本发明提供一种喷墨打印喷头，包括腔体，用于容纳墨水，在所述腔体的用于喷墨的侧壁上设置有多个喷嘴组，各个所述喷嘴组用于分别对不同位置的像素进行喷墨打印。每个所述喷嘴组均包括多个子喷嘴，每个所述喷嘴组中的多个所述子喷嘴能够喷出不同体积的墨水。
优选地，每个所述喷嘴组中的多个所述子喷嘴的规格尺寸不同。
优选地，多个所述喷嘴组排成一列或相互平行的多列，每个所述喷嘴组中的多个所述子喷嘴均排成一行。在每列所述喷嘴组中，规格尺寸相同的所述子喷嘴排成一列，并且各列所述子喷嘴相互平行，使得多个所述喷嘴组中的所述子喷嘴排列呈矩阵。
优选地，在每列所述喷嘴组中，任意相邻两列所述子喷嘴之间的间距相等，并且在每列所述子喷嘴中，任意相邻两个所述子喷嘴之间的间距相等。
优选地，所述喷嘴组用于对应对像素阵列中的待打印像素进行喷墨打印。
优选地，各列所述子喷嘴的数量等于各列所述像素的数量，各列所述子喷嘴中任意相邻两个所述子喷嘴之间的间距等于各列所述像素中任意相邻两个所述像素之间的间距；
在一列所述喷嘴组的情况下，所述列喷嘴组用于对一列像素进行喷墨打印，然后，所述列喷嘴组能够通过平行移动而依次对所述像素阵列中的各列所述像素进行喷墨打印；
或者，在多列所述喷嘴组的情况下，所述多列喷嘴组用于一次对所述像素阵列中的多列像素进行喷墨打印。
优选地，所述喷墨打印喷头还包括计算模块和控制模块。所述计算模块用于根据每个待打印像素需要的墨水的总体积和所述喷嘴组中的各个所述子喷嘴能够喷出的墨水体积，计算出对应打印所述像素的所述喷嘴组中不同所述子喷嘴的组合方式，并将所述组合方式发送给所述控制模块。所述控制模块用于根据所述组合方式控制所述子 喷嘴的喷墨量。
优选地，在所述腔体的用于喷墨的侧壁内侧还设置有多个隔板，所述隔板设置在任意相邻的两列所述子喷嘴之间，或者，所述隔板均匀设置在所述喷嘴组之间的间隔区域，将所述喷嘴组所在区域划分为多个大小相等的区域。
优选地，所述隔板将所述腔体完全隔开为多个子腔体，或者，所述隔板将所述腔体的靠近喷墨侧壁的底部隔开为多个子腔体，多个所述子腔体的远离所述喷墨侧壁的顶部是连通的。
本发明还提供一种喷墨打印设备，包括上述喷墨打印喷头。
本发明还提供一种使用上述喷墨打印喷头的喷墨打印方法，包括：首先，确定不同位置的待打印像素所需要的墨水的总体积；然后，根据不同位置的待打印像素所需要打印的墨水的总体积和所述喷嘴组中的各个所述子喷嘴能够喷出的墨水的体积，计算出各个所述位置的待打印像素的所述喷嘴组中不同所述子喷嘴的组合方式；最后，根据所述组合方式控制所述子喷嘴喷墨打印。
本发明的实施方式的有益效果：在本发明所提供的喷墨打印喷头中，在每个喷嘴组中设置多个喷墨体积不同的子喷嘴，能使每个喷嘴组都能够喷出要求体积的墨水，从而使各个喷嘴组喷到不同位置点上的墨水滴的总体积能够更加精确。这样，不仅使喷墨打印形成的膜层的厚度能够灵活控制和调整，而且使喷墨打印形成的膜层厚度的精度能够大大提高。
在本发明所提供的喷墨打印设备中，由于采用上述喷墨打印喷头，使得喷墨打印设备能够对打印膜层的厚度进行灵活控制和调整，从而提高了喷墨打印的精度。
附图说明
图1为根据本发明的第一实施例的喷墨打印喷头的结构示意图；
图2为图1所示的喷墨打印喷头的局部放大图；
图3为图1所示的喷墨打印喷头中的子喷嘴与像素阵列中的像素的对应关系的示意图；
图4为本发明的第一实施例的喷墨打印喷头中的一种隔板的结构剖视图；
图5为本发明的第一实施例的喷墨打印喷头中的另一种隔板的结构剖视图；
图6为本发明的第二实施例的喷墨打印喷头的结构示意图。
具体实施方式
为使本领域的技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式进一步详细描述本发明所提供的一种喷墨打印喷头、使用该喷墨打印喷头的喷墨打印方法以及具有该喷墨打印喷头喷墨打印设备。
第一实施例
本实施例提供一种喷墨打印喷头，如图1和图2所示，包括腔体1，用于容纳墨水，在腔体1的用于喷墨的侧壁上设置有多个喷嘴组2，各个喷嘴组2用于分别对不同位置的像素进行喷墨打印，每个喷嘴组2均包括多个子喷嘴21(在本实施例中为3个子喷嘴)，每个喷嘴组2中的多个子喷嘴21能够喷出不同体积的墨水。
通过在每个喷嘴组2中设置多个喷墨体积不同的子喷嘴21，能使每个喷嘴组2都能喷出所需体积的墨水滴，使得各个喷嘴组2喷到不同位置点上的墨水滴的总体积能够更加精确。因此，不仅使喷墨打印形成的膜层的厚度能够灵活控制和调整，而且使喷墨打印形成的膜层厚度的精度能够大大提高。
其中，每个喷嘴组2中的多个子喷嘴21的规格尺寸不同。如此设置，使得每个喷嘴组2中的多个子喷嘴21能够喷出不同体积的墨水滴。
在本实施例中，多个喷嘴组2沿着附图中的纵向方向排成一列，而每个喷嘴组2中的多个子喷嘴21均沿着附图中的横向方向排成一行。这样，一列喷嘴组2可以形成由子喷嘴21构成的矩阵，其中规格尺寸相同的子喷嘴21排成一列并且各列子喷嘴21相互平行。
其中，在一列喷嘴组2中，任意相邻两列子喷嘴21之间的间距(即，附图中的横向间距)相等，并且在每列子喷嘴21中任意相邻两个子喷嘴21之间的间距(即，附图中的纵向间距)相等。
在本实施例中，如图3所示，多个喷嘴组2用于对像素阵列3中的待打印像素31进行喷墨打印。由于每个喷嘴组2均包括多个子喷嘴21，所以可以精确地控制对每个像素31的喷墨量，从而提高像素阵列3中的像素31的打印效率。
在本实施例中，优选的是，各列子喷嘴21的数量等于各列像素31的数量，各列子喷嘴21中任意相邻两个子喷嘴21之间的间距(即，附图中的纵向间距)等于各列像素31中任意相邻两个像素31之间的间距(即，附图中的纵向间距)。在本实施例中包括一列喷嘴组2。该列喷嘴组2用于对一列像素31进行喷墨打印。然后，该列喷嘴组2能够通过平行移动而依次对对像素阵列3中的各列像素31进行喷墨打印。
其中，一列喷嘴组2对一列像素31进行喷墨打印分为两种情况。一种情况为：包括多个子喷嘴21的喷嘴组的横向宽度小于或等于一个像素31的横向宽度。此时，该列喷嘴组2中的每个喷嘴组2在位置上能够与一列像素31中的各个像素31一一对应，所以可以保证喷嘴组2中的多个子喷嘴21喷出的墨水滴都能落入与其对应的一个像素31中。这样，在打印时每个喷嘴组2中的多个子喷嘴21可以同时喷墨，从而实现对一列像素31中各个像素31的同时打印。另一种情况为：包括多个子喷嘴21的喷嘴组2的横向宽度大于一个像素31的横向宽度。此时，该列喷嘴组2中的各个子喷嘴21无法同时与一列像素31中的各个像素31相对应。这意味着喷嘴组2中的多个子喷嘴21喷出的墨水滴无法同时落入与其对应的一个像素31中。因此，这种情况下，在打印时需要该列喷嘴组2中的各列子喷嘴21分别与该列像素31进行位置匹配，并且在位置匹配时进行喷墨打印。在本实施例中，可以通过平行移动喷墨打印喷头来实现各列子喷嘴21的打印过程。上述两种情况均能高效快速地对像素阵列3中的一列像素31进行喷墨打印，而且可以对每个像素31的喷墨量进行精确控制。
由于本实施例中只有一列喷嘴组2，所以该列喷嘴组2能够通过平行移动依次对像素阵列3中的各列像素31进行打印。
在本实施例中，喷墨打印喷头还包括计算模块和控制模块(图中未示出)，计算模块用于根据每个待打印像素31需要的墨水总体积和喷嘴组2中的各个子喷嘴21能够喷出的墨水体积，计算出打印该像素31的喷嘴组2中的不同子喷嘴21的组合方式，并将该组合方式发送给控制模块；控制模块用于根据该组合方式控制子喷嘴21的喷墨量。
例如，在本实施例中，每个喷嘴组2包括三个子喷嘴21，三个子喷嘴21一次能喷出的墨滴体积分别为30pL、20pL和10pL，且每个子喷嘴21的喷墨体积能够在正负2pL的范围内微调。假设每个像素31需要打印的墨水总体积为63pL，那么计算模块能计算出在喷墨总体积为63pL时的各个子喷嘴21的喷墨体积的组合方式为：63＝(30-2)+(20-1)+2×(10-2)。也就是说，在打印一个像素31时，30pL的墨水打印一滴(30pL的子喷嘴21喷一滴)，20pL的墨水打印一滴(20pL的子喷嘴21喷一滴)，10pL的墨水打印两滴(10pL的子喷嘴21喷两滴)，即可实现对一个像素31的精确打印。
计算模块和控制模块的设置，使子喷嘴21在喷墨时能够合理组合，从而使喷墨量更加容易调整和控制，进而提高了喷墨量的精确度。
需要说明的是，在打印过程中，如果在喷嘴组2的多个子喷嘴21中只需要其中几个子喷嘴21的喷墨体积就能组合获得一个像素31需要打印的墨水的总体积，那么，喷嘴组2中的其他子喷嘴21(即在组合方式中用不到的子喷嘴21)在打印过程中可以不进行喷墨打印。由于喷嘴组2中的各个子喷嘴21都能够独立控制，所以很容易实现上述过程。
在本实施例中，如图4所示，在腔体1的用于喷墨的侧壁内侧还可以设置有多个隔板11，隔板11设置在任意相邻的两列子喷嘴21之间。隔板11的设置，使不同规格尺寸的子喷嘴21之间的墨水供应不会相互影响。这样，能够使墨水供应便于监控，从而能够确保打印的顺利进行。
需要说明的是，隔板11也可以均匀设置在喷嘴组2之间的间隔区域，将喷嘴组2所在区域划分为多个大小相等的区域。如此设置，能够避免各个不同区域中喷嘴组2在喷墨时相互之间产生墨水供应的影响。这样，能够使墨水供应便于监控，从而能够确保打印的顺利进行。
在本实施例中，隔板11将腔体1完全隔开为多个子腔体12(如图4所示)。当然，多个子腔体12的远离喷墨侧壁的顶部也可以是连通(如图5所示)的。这两种方式都可以使被隔开区域之间的墨水供应不会相互影响，便于监控墨水供应。
基于本实施例中喷墨打印喷头的上述结构，本实施例还提供一种使用该喷墨打印喷头的喷墨打印方法，包括：首先，确定不同位置的待打印像素所需要的墨水的总体积；然后，根据不同位置的待打印像素所需的墨水的总体积和喷嘴组中的各个子喷嘴能够喷出的墨水体积，计算出各个位置的待打印像素的喷嘴组中不同子喷嘴的组合方式；最后，根据该组合方式控制子喷嘴喷墨打印。通过该打印方法，能够实现对各个位置的像素的精确打印。
第二实施例
本实施例提供一种喷墨打印喷头。与实施例1不同的是，如图6所示，本实施例的喷墨打印喷头包括多列相互平行的喷嘴组2。多列喷嘴组2中的喷嘴组2与像素阵列中的各个像素对应，多列喷嘴组2能一次对像素阵列中的所有像素进行喷墨打印。
根据上述设置，多列喷嘴组2能够同时喷墨打印，一次完成对像素阵列中所有像素的打印，从而进一步提高了打印效率。
需要说明的是，优选的是，在本实施例的喷头中，包括多个子喷嘴21的喷嘴组2的横向宽度小于或等于一个像素的横向宽度。在这种情况下，由多列喷嘴组2形成的矩阵能够与像素在位置上一一对应。因此，当所有子喷嘴21同时进行打印，就可以一次完成所有像素的打印，从而提高了像素的打印效率。
当然，在本实施例的喷头中，包括多个子喷嘴21的喷嘴组2的 横向宽度也可以大于一个像素的横向宽度。在这种情况下，由多列喷嘴组2形成的矩阵无法与像素在位置上一一对应。因此，无法一次完成所有像素的打印。在这种情况下，可以通过平行移动喷墨打印喷头，使喷嘴组2中的各列子喷嘴21依次完成打印。按照这种方式，打印次数至多等于喷嘴组2中的子喷嘴21的数量。
本实施例中的喷墨打印喷头的其他结构与实施例1相同，并且使用本实施例的喷墨打印喷头的打印方法也与实施例1相同，此处不再赘述。
第三实施例
本实施例提供一种包括第一或第二实施例的喷墨打印喷头的喷墨打印设备。
通过采用第一或第二实施例的喷墨打印喷头，使该喷墨打印设备能够对打印膜层的厚度进行灵活控制和调整，从而提高了该喷墨打印设备的喷墨打印精度。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (11)

  1. 一种喷墨打印喷头，包括腔体，用于容纳墨水，在所述腔体的用于喷墨的侧壁上设置有多个喷嘴组，各个所述喷嘴组用于分别对不同位置的像素进行喷墨打印，其特征在于，
    每个所述喷嘴组均包括多个子喷嘴，每个所述喷嘴组中的多个所述子喷嘴能够喷出不同体积的墨水。
  2. 根据权利要求1所述的喷墨打印喷头，其特征在于，
    每个所述喷嘴组中的多个所述子喷嘴的规格尺寸不同。
  3. 根据权利要求2所述的喷墨打印喷头，其特征在于，
    多个所述喷嘴组排成一列或相互平行的多列，每个所述喷嘴组中的多个所述子喷嘴均排成一行，
    在每列所述喷嘴组中，规格尺寸相同的所述子喷嘴排成一列，并且各列所述子喷嘴相互平行，使得多个所述喷嘴组中的所述子喷嘴排列呈矩阵。
  4. 根据权利要求3所述的喷墨打印喷头，其特征在于，
    在每列所述喷嘴组中，任意相邻两列所述子喷嘴之间的间距相等，并且在每列所述子喷嘴中，任意相邻两个所述子喷嘴之间的间距相等。
  5. 根据权利要求4所述的喷墨打印喷头，其特征在于，
    多个所述喷嘴组用于对像素阵列中的待打印像素进行喷墨打印。
  6. 根据权利要求5所述的喷墨打印喷头，其特征在于，
    各列所述子喷嘴的数量等于各列所述像素的数量，各列所述子喷嘴中任意相邻两个所述子喷嘴之间的间距等于各列所述像素中任 意相邻两个所述像素之间的间距；
    在一列所述喷嘴组的情况下，所述列喷嘴组用于对一列像素进行喷墨打印，然后，所述列喷嘴组能够通过平行移动而依次对各列所述像素进行喷墨打印；
    或者，在多列所述喷嘴组的情况下，所述多列喷嘴组用于一次对所述像素阵列中的多列像素进行喷墨打印。
  7. 根据权利要求6所述的喷墨打印喷头，其特征在于，
    所述喷墨打印喷头还包括计算模块和控制模块，
    所述计算模块用于根据每个待打印像素需要的墨水的总体积和所述喷嘴组中的各个所述子喷嘴能够喷出的墨水体积，计算出打印所述像素的所述喷嘴组中不同所述子喷嘴的组合方式，并将所述组合方式发送给所述控制模块；
    所述控制模块用于根据所述组合方式控制所述子喷嘴的喷墨量。
  8. 根据权利要求1所述的喷墨打印喷头，其特征在于，
    在所述腔体的用于喷墨的侧壁内侧还设置有多个隔板，所述隔板设置在任意相邻的两列所述子喷嘴之间，
    或者，所述隔板均匀设置在所述喷嘴组之间的间隔区域，将所述喷嘴组所在区域划分为多个大小相等的区域。
  9. 根据权利要求8所述的喷墨打印喷头，其特征在于，
    所述隔板将所述腔体完全隔开为多个子腔体，
    或者，所述隔板将所述腔体的靠近喷墨侧壁的底部隔开为多个子腔体，多个所述子腔体的远离所述喷墨侧壁的顶部是连通的。
  10. 一种喷墨打印设备，其特征在于，包括根据权利要求1-9中任意一项所述的喷墨打印喷头。
  11. 一种使用根据权利要求1-9中任意一项所述的喷墨打印喷头的喷墨打印方法，其特征在于，所述方法包括：
    确定不同位置的待打印像素所需要的墨水的总体积；
    根据不同位置的待打印像素所需要的墨水的总体积和所述喷嘴组中的各个所述子喷嘴能够喷出的墨水的体积，计算出各个所述位置的待打印像素的所述喷嘴组中不同所述子喷嘴的组合方式；
    根据所述组合方式控制所述子喷嘴喷墨打印。
PCT/CN2016/070985 2015-07-28 2016-01-15 喷墨打印喷头、喷墨打印方法和喷墨打印设备 WO2017016202A1 (zh)

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