CN110085773B

CN110085773B - Ink-jet printing method, device, system, computer equipment and storage medium

Info

Publication number: CN110085773B
Application number: CN201810343357.8A
Authority: CN
Inventors: 柳开郎
Original assignee: Guangdong Juhua Printing Display Technology Co Ltd
Current assignee: Guangdong Juhua Printing Display Technology Co Ltd
Priority date: 2018-04-17
Filing date: 2018-04-17
Publication date: 2021-07-20
Anticipated expiration: 2038-04-17
Also published as: CN110085773A

Abstract

The present application relates to an inkjet printing method, apparatus, system, computer device and storage medium. The method comprises the following steps: acquiring a candidate ink drop volume; screening out a plurality of target ink drop volumes from the candidate ink drop volumes; the sum of the volumes of the plurality of target ink drops is matched with the set total volume of ink; acquiring a nozzle-waveform combination corresponding to each target ink droplet volume; and sending a plurality of nozzle-waveform combinations corresponding to the target ink drop volumes to an ink jet printing device, so that the ink jet printing device can execute a printing task according to the nozzle-waveform combinations. By the ink-jet printing method, the volumes of the ink in the pixel pits on the OLED device tend to be consistent, and the problems that the uniformity of the formed film of the ink material of the OLED device is poor and the performance of the OLED device is affected are solved.

Description

Ink-jet printing method, device, system, computer equipment and storage medium

Technical Field

The present disclosure relates to the field of inkjet printing technologies, and in particular, to an inkjet printing method, an inkjet printing apparatus, an inkjet printing system, a computer device, and a storage medium.

Background

With the development of the fabrication process of OLED (Organic Light-Emitting Diode) devices, a fabrication technique based on inkjet printing has emerged. More specifically, when the OLED device is manufactured, ink is injected into a pixel pit of the OLED device by an inkjet printing head of an inkjet printing device in an inkjet printing mode to form a device thin film.

In the current inkjet printing process, a voltage waveform is usually set first, and then each nozzle on the inkjet print head continuously ejects ink drops according to the voltage waveform to drive the ink drops into the pixel pits corresponding to the nozzle.

However, due to different process accuracies of different nozzles, even according to the same voltage waveform, the actual ink drop volumes ejected by different nozzles may also have corresponding differences, so that the ink volumes in the respective pixel pits of the OLED device have larger differences, which results in poor uniformity of film formation of the ink material and affects the performance of the OLED device.

Therefore, the current ink-jet printing method has the problem of influencing the performance of the OLED device.

Disclosure of Invention

In view of the above, it is necessary to provide an inkjet printing method, an inkjet printing apparatus, an inkjet printing system, a computer device, and a storage medium in order to solve the above technical problems.

A method of inkjet printing, the method comprising:

acquiring a candidate ink drop volume;

screening out a plurality of target ink drop volumes from the candidate ink drop volumes; the sum of the volumes of the plurality of target ink drops is matched with the set total volume of ink;

acquiring a nozzle-waveform combination corresponding to each target ink droplet volume;

and sending a plurality of nozzle-waveform combinations corresponding to the target ink drop volumes to an ink jet printing device, so that the ink jet printing device can execute a printing task according to the nozzle-waveform combinations.

In one embodiment, the candidate drop volumes have corresponding nozzle identifications, and the step of filtering out a plurality of target drop volumes from the candidate drop volumes comprises:

determining a nozzle identifier to be processed in the plurality of nozzle identifiers;

judging whether the candidate ink drop volumes corresponding to the nozzle identification to be processed contain the target ink drop volumes or not;

if yes, extracting the multiple target ink drop volumes from the candidate ink drop volumes corresponding to the nozzle identification to be processed;

if not, acquiring the adjacent nozzle identification of the nozzle identification to be processed, and extracting the target ink drop volumes from the candidate ink drop volume of the nozzle identification to be processed and the candidate ink drop volume of the adjacent nozzle identification.

In one embodiment, the candidate ink drop volumes have corresponding deviation values, and the step of determining whether the candidate ink drop volumes corresponding to the nozzle identifier to be processed include the target ink drop volumes includes:

judging whether the target ink drop volumes are contained in the candidate ink drop volumes corresponding to the nozzle identification to be processed and having the range of the first deviation value N1; wherein N1 is more than or equal to 0;

if not, further judging whether the target ink drop volumes are contained in the candidate ink drop volumes which correspond to the to-be-processed nozzle identification and have the range of the second deviation value N2; wherein N2 is more than N1 and is more than or equal to 0;

if not, judging that the candidate ink drop volume corresponding to the nozzle identification to be processed does not contain the target ink drop volumes.

In one embodiment, the nozzle identifier has a corresponding position, and the step of acquiring neighboring nozzles of the nozzle identifier to be processed includes:

respectively calculating the distances between the positions corresponding to other nozzle identifications and the positions corresponding to the to-be-processed nozzle identifications to obtain a plurality of distances;

determining a minimum distance among the plurality of distances;

and taking the nozzle mark corresponding to the minimum distance as the adjacent nozzle mark.

In one embodiment, the step of acquiring the volume of the candidate ink drop comprises:

acquiring a plurality of actual ink drop volumes corresponding to the nozzle mark to be processed, and acquiring a standard ink drop volume corresponding to the total ink volume;

calculating deviation values of the actual ink drop volumes of the nozzle marks to be processed and the standard ink drop volume to obtain a plurality of deviation values;

acquiring the actual ink drop volume with the range of the first deviation value N1 and the actual ink drop volume with the range of the second deviation value N2 as the candidate ink drop volume corresponding to the nozzle identification to be processed.

In one embodiment, the step of acquiring a plurality of actual ink drop volumes corresponding to the nozzle identifier to be processed includes:

acquiring a plurality of voltage waveforms;

and calling the voltage waveforms, and carrying out drop titration correction on the solid nozzle corresponding to the nozzle identifier to be processed on the ink jet printing equipment to obtain a plurality of actual drop volumes corresponding to the nozzle identifier to be processed.

In one embodiment, the step of obtaining a plurality of voltage waveforms includes:

receiving a voltage range and a time range;

selecting a plurality of voltage values in the voltage range and a plurality of time values in the time range, thereby obtaining a plurality of sets of voltage-time values;

and generating corresponding voltage waveforms by respectively adopting the voltage-time values of each group to obtain a plurality of voltage waveforms.

In one embodiment, the step of obtaining the nozzle-waveform combination corresponding to each target ink drop volume comprises:

acquiring a nozzle identifier corresponding to the target ink drop volume, and acquiring a voltage waveform corresponding to the target ink drop volume;

and forming the nozzle-waveform combination by using the nozzle identification corresponding to the target ink drop volume and the voltage waveform corresponding to the target ink drop volume.

A method of inkjet printing, the method comprising:

receiving a nozzle-waveform combination; the nozzle-waveform combination is obtained from a plurality of target ink drop volumes; the plurality of target drop volumes are extracted from the candidate drop volumes; the sum of the volumes of the plurality of target ink drops is matched with the set total volume of ink;

executing a print job according to the nozzle-waveform combination.

In one embodiment, the nozzle-waveform combination is comprised of a nozzle identification and a voltage waveform, and the step of performing a print job based on the nozzle-waveform combination comprises:

and triggering the entity nozzle corresponding to the nozzle identification on the ink-jet printing equipment to jet ink according to the voltage waveform.

In one embodiment, the method further comprises:

and when the voltage waveform is detected to change, adjusting the voltage applied to the piezoelectric ceramic plate of the ink-jet printing equipment and the voltage application time.

An inkjet printing apparatus, the apparatus comprising:

the volume acquisition module is used for acquiring the volume of the candidate ink drop;

the screening module is used for screening out a plurality of target ink drop volumes from the candidate ink drop volumes; the sum of the volumes of the plurality of target ink drops is matched with the set total volume of ink;

the combination acquisition module is used for acquiring nozzle-waveform combinations corresponding to the volumes of the target ink drops;

and the combination sending module is used for sending the plurality of nozzle-waveform combinations corresponding to the plurality of target ink drop volumes to the ink jet printing equipment, so that the ink jet printing equipment can execute a printing task according to the nozzle-waveform combinations.

An inkjet printing apparatus, the apparatus comprising:

a receiving module for receiving a nozzle-waveform combination; the nozzle-waveform combination is obtained from a plurality of target ink drop volumes; the plurality of target drop volumes are extracted from the candidate drop volumes; the sum of the volumes of the plurality of target ink drops is matched with the set total volume of ink;

and the task execution module is used for executing the printing task according to the nozzle-waveform combination.

An inkjet printing system comprising:

an inkjet printing terminal and an inkjet printing apparatus;

the inkjet printing terminal includes:

the combination sending module is used for sending a plurality of nozzle-waveform combinations corresponding to the target ink drop volumes to the ink jet printing equipment, so that the ink jet printing equipment can execute a printing task according to the nozzle-waveform combinations;

the inkjet printing apparatus includes:

a receiving module for receiving a nozzle-waveform combination of the inkjet printing terminal;

A computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:

acquiring a candidate ink drop volume;

The processor, when executing the computer program, further performs the steps of:

executing a print job according to the nozzle-waveform combination.

A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:

acquiring a candidate ink drop volume;

The computer program when executed by the processor further realizes the steps of:

executing a print job according to the nozzle-waveform combination.

Drawings

FIG. 1 is a diagram of an environment in which an ink jet printing method is applied in one embodiment;

FIG. 2 is a schematic view of an inkjet printhead for fabricating an OLED device;

FIG. 3 is a schematic structural view of an ink jet print head;

FIG. 4 is a schematic view of a nozzle configuration;

FIG. 5 is a schematic flow chart diagram of a method of ink jet printing in one embodiment;

FIG. 6 is a schematic step diagram of the step of screening the target ink drop volume;

FIG. 7 is a schematic of a voltage waveform;

FIG. 8 is a schematic view of an input interface of an embodiment;

FIG. 9 is a schematic flow chart of an ink jet printing method in another embodiment

FIG. 10 is a schematic view of an optimized nozzle internal structure in one embodiment;

FIG. 11 is a block diagram showing the structure of an ink jet printing apparatus according to an embodiment;

FIG. 12 is a block diagram showing the structure of an ink jet printing apparatus according to another embodiment;

FIG. 13 is a block diagram of an inkjet printing system in one embodiment;

FIG. 14 is a diagram showing an internal structure of a computer device in one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The application provides an ink jet printing method which can be applied to the application environment shown in FIG. 1. Wherein inkjet printing terminal 102 communicates with inkjet printing device 104 over a network. The inkjet printing terminal 102 may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices. The inkjet printing apparatus 104 is used to make OLED devices.

It should be noted that, in the fabrication process of the OLED device, some functional materials may be fabricated by inkjet printing. For example, a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an emission Layer (EML), and the like on the OLED device, and the functional Material ink may be injected into the pixel pits of the Hole injection Layer, the Hole Transport Layer, and the emission Layer by inkjet printing. The pixel pit has a certain ink volume, and when ink jet printing is performed, the total volume of ink needs to be set according to the ink volume, that is, after a plurality of ink drops are dropped into the pixel pit, the sum of the volumes of the plurality of ink drops needs to be matched with the total volume of the ink.

In order to facilitate understanding of the present application by those skilled in the art, an inkjet printing apparatus according to an embodiment of the present application will be described below with reference to fig. 2 to 4.

Fig. 2 is a schematic view of a scenario of an inkjet printhead for fabricating an OLED device. As can be seen, the inkjet print head 202 prints the functional material ink 206 to the pixel wells 204 of the OLED device.

Fig. 3 is a schematic structural view of an inkjet printhead. As can be seen, the inkjet printhead 302 includes a plurality of nozzles 3021, and the nozzles 3021 are configured to eject ink droplets according to the control of voltage waveforms, and the ink droplet volumes of each ink droplet ejected from the nozzles 3021 may differ under the control of different voltage waveforms. The inkjet printhead 302 is connected to an ink filling member 304, and the ink filling member 304 is used to supply the functional material ink to the nozzles 3021.

Fig. 4 is a schematic view of a nozzle structure. As can be seen, the nozzle 402 includes an ink reservoir 4021, an excitation chamber 4022, and a piezoelectric ceramic plate 4023. The ink storage cavity 4021 is used for storing the functional material ink provided by the ink filling piece and inputting the functional material ink to the excitation cavity 4022; the excitation cavity 4022 is used for storing functional material ink input by the ink storage cavity 4021; when a certain voltage is applied to the piezoelectric ceramic plate 4023, the piezoelectric ceramic plate 4023 deforms and presses the excitation chamber 4022; the compressed firing chamber 4022 will extrude the functional material ink stored therein to form ink droplets 403, however, ink droplets 403 are injected into the pixel wells of the OLED device. In order to realize continuous ink ejection in a print job, the piezoelectric ceramic plate 4023 needs to be deformed back and forth. In order to realize the reciprocating deformation of the piezoelectric ceramic plate 4023, it is necessary to apply a voltage for a certain duration to the piezoelectric ceramic plate 4023 at certain intervals.

It should be noted that, in one print job, a plurality of droplets of ink may be dropped for each pixel pit. Due to different process precision of the nozzles, even according to the same voltage waveform, the volumes of ink drops ejected by different nozzles may have certain difference.

In the existing ink-jet printing process of the OLED device, after each nozzle ejects a plurality of ink drops under the control of the same voltage waveform, the difference can be accumulated, so that the difference of the ink volume in the pixel pit corresponding to the nozzle is large, and the thickness of a thin film of the OLED device obtained by ink-jet printing is uneven, thereby seriously affecting the performance of the OLED device.

For example, the deviation range of the ink drop volume corresponding to the voltage waveform is set to [9.7,10.3], and the actual ink drop volume of the nozzle a is 10.1pl (pico liter) and the actual ink drop volume of the nozzle B is 10.3pl after the inkjet ink drop correction, and assuming that three ink drops need to be ejected currently, the total amount of ink ejected from the nozzle a is 10.1 × 3 to 30.3pl, and the total amount of ink ejected from the nozzle B is 10.3 × 3 to 30.9pl, and there is a volume difference of 30.9 to 30.3 to 0.6pl between the two.

In one embodiment, as shown in fig. 5, an inkjet printing method is provided, which is described by taking the method as an example applied to the inkjet printing terminal 102 in fig. 1, and includes the following steps:

step S502, a candidate ink droplet volume is acquired.

Here, the candidate ink droplet volumes in step S502 include ink droplet volumes actually ejected when the nozzles of the inkjet printing apparatus eject ink according to the plurality of voltage waveforms, respectively. Each nozzle ejects ink according to a plurality of voltage waveforms, and a plurality of ink drop volumes corresponding to the plurality of voltage waveforms can be obtained. When each nozzle ejects ink according to a plurality of voltage waveforms, a plurality of ink drop volumes of the plurality of nozzles can be obtained as candidate ink drop volumes. For example, an inkjet printing apparatus includes 128 nozzles, and the 128 nozzles respectively eject ink according to 16 waveforms, so that 128 × 16 — 2048 candidate ink drop volumes can be obtained.

Specifically, the inkjet printing terminal 102 may acquire the ink drop volumes actually ejected by the respective nozzles according to different voltage waveforms as candidate ink drop volumes, so that the candidate ink drop volumes may be further screened later.

The specific manner of acquiring the candidate drop volume may be various. For example, a plurality of voltage waveforms may be first set, droplet titration correction may be performed on a nozzle of the inkjet printing apparatus using the plurality of voltage waveforms, droplet volumes corresponding to different voltage waveforms of the nozzle may be obtained, and the droplet volume corresponding to each voltage waveform of the nozzle may be used as a candidate droplet volume. Or after drop titration correction is carried out to obtain the drop volumes of the nozzles corresponding to different voltage waveforms, deviation values of the multiple drop volumes and the standard drop volume are further calculated, and a plurality of optimal drop volumes are screened out according to the deviation values to serve as candidate drop volumes. Of course, a person skilled in the art may obtain the candidate ink drop volume in other manners according to actual needs, and the embodiment of the present application does not limit the specific manner of obtaining the candidate ink drop volume.

Step S504, screening out a plurality of target ink drop volumes from the candidate ink drop volumes; the sum of the multiple target drop volumes matches a set total ink volume.

Wherein the target ink drop volume in step S504 includes a number of candidate ink drop volumes whose summed sum matches the set total ink volume.

The total volume of ink in step S504 includes the volume of ink that needs to be ejected in the current print job. The total ink volume may be set according to the ink capacity of the pixel pit. For example, the ink capacity of the pixel pit is 30.3pl, and the total ink volume of the current print job can be set to 30.3 pl.

Specifically, the inkjet printing terminal 102 may first extract and sum a plurality of candidate ink drop volumes, and determine whether the sum of the candidate ink drop volumes and the set total ink volume match a preset total ink volume. If yes, extracting the volume of the ink drop as a target ink drop volume; if not, extracting another candidate ink drop volume again for summation, and performing the next round of judgment processing.

Screening the target drop volume can be done in a number of specific ways.

For example, a target ink drop volume may be first found among candidate ink drop volumes for the same nozzle by determining candidate ink drop volumes corresponding to the same nozzle among a plurality of candidate ink drop volumes. If a plurality of target ink drop volumes cannot be acquired from the candidate ink drop volumes of the same nozzle, the candidate ink drop volumes of other nozzles can be further acquired to increase the alternative candidate ink drop volumes, and then the target ink drop volumes are acquired from the candidate ink drop volumes of the same nozzle and the candidate ink drop volumes of other nozzles.

In the process of searching the target ink drop volume in the candidate ink drop volumes of the same nozzle, classification searching can be carried out according to the deviation value of the candidate ink drop volumes of the same nozzle. For example, a plurality of target ink drop volumes may be searched for in the candidate ink drop volumes with a small deviation value, when the plurality of target ink drop volumes cannot be acquired in the candidate ink drop volumes with a small deviation value, the candidate ink drop volumes with a large deviation value may be further acquired, and a plurality of target ink drop volumes may be searched for in the candidate ink drop volumes with a small deviation value and the candidate ink drop volumes with a large deviation value.

In the process of acquiring the candidate ink drop volumes of other nozzles to increase the alternative candidate ink drop volumes, nozzle selection can also be performed according to the distance between the nozzles. For example, if a plurality of target ink droplet volumes cannot be obtained from the candidate ink droplet volumes of nozzle a, the candidate ink droplet volumes of the adjacent nozzle B may be further obtained, and a plurality of target ink droplet volumes may be searched for from the candidate ink droplet volumes of nozzle a and the candidate ink droplet volumes of nozzle B.

The above examples are merely for describing the screening means used for different actual situations, and are not intended to limit the screening process. Those skilled in the art can select a plurality of target ink drop volumes matched with the total volume of the ink after summation by adopting various means according to actual needs.

In step S506, a nozzle-waveform combination corresponding to each target ink droplet volume is obtained.

Wherein the nozzle-waveform combination in step S506 includes information consisting of the nozzle identification and the voltage waveform. The nozzle identification is used to identify a physical nozzle in the inkjet printing apparatus. For example, a target drop volume v₁The corresponding nozzle-waveform combination M0001, may be "nozzle INJ₀₀₁-voltage waveform V₁", denotes the nozzle INJ₀₀₁Corresponding physical nozzle according to voltage waveform V₁When ink is ejected, the volume of the ejected ink drop is the target ink drop volume v₁。

Specifically, since the candidate droplet volumes are obtained by performing droplet titration correction on the nozzles of the inkjet printing apparatus according to the set voltage waveform, each candidate droplet volume has a corresponding nozzle identification and voltage waveform. The inkjet printing terminal 102 may acquire the corresponding nozzle identifier and voltage waveform for the target ink drop volume, and form a nozzle-waveform combination. A plurality of target drop volumes, and a corresponding plurality of nozzle-waveform combinations.

Step S508, sending a plurality of nozzle-waveform combinations corresponding to the target ink droplet volumes to an inkjet printing device, so that the inkjet printing device executes a printing task according to the nozzle-waveform combinations.

In particular, inkjet printing terminal 102 may send multiple nozzle-waveform combinations to inkjet printing device 104. Inkjet printing device 104 may then perform a print job based on the plurality of nozzle-waveform combinations. More specifically, the inkjet printing apparatus 104 may select a target physical nozzle corresponding to the nozzle identifier according to the nozzle identifier and the voltage waveform in the nozzle-waveform combination, and control the target physical nozzle to eject ink according to the voltage waveform. For multiple nozzle-waveform combinations, the inkjet printing device 104 may then select multiple target physical nozzles to eject ink according to different voltage waveforms.

As previously described, the plurality of nozzle-waveform combinations respectively correspond to a plurality of target ink drop volumes, and the sum of the plurality of target ink drop volumes matches the set total ink volume. That is, the inkjet printing apparatus selects a corresponding target physical nozzle according to a plurality of nozzle-waveforms, and controls the target physical nozzle to eject ink to a certain pixel pit according to the corresponding voltage waveform, and the sum of the droplet volumes of the ejected multi-droplet droplets also matches the set total volume of ink accordingly. Therefore, the difference of the total volume of the ink injected into each pixel pit on the OLED device is reduced, and the thickness of the thin film on the OLED device is ensured to be consistent.

For example, assuming that the total ink volume for the current print job is 30.3pl, for three nozzle-waveform combinations M0001, M0002 and M0003, the nozzle-waveform combination M0001 is [ nozzle INJ₀₀₁-voltage waveform V₁]The nozzle-waveform combination M0002 is [ nozzle INJ ]₀₀₂-voltage waveform V₁]The nozzle-waveform combination M0003 is [ nozzle INJ ]₀₀₂-voltage waveform V₂]. When the inkjet printing apparatus performs a print job according to the three nozzle-waveform combinations, specifically, according to the nozzle-waveform combination M0001[ nozzle INJ ]₀₀₁-voltage waveform V₁]Selecting the nozzle INJ₀₀₁The corresponding nozzle follows the voltage waveform V₁Ink jet, the volume of the ejected ink drop is 10.0 pl; according to nozzle-wave combinations M0002 nozzle INJ₀₀₂-voltage waveform V₁]Selecting the nozzle INJ₀₀₂The corresponding nozzle follows the voltage waveform V₁Ink jet, the volume of the ejected ink drop is 10.1 pl; according to nozzle-wave combinations M0003 nozzle INJ₀₀₂-voltage waveform V₂]Selecting the nozzle INJ₀₀₂The corresponding nozzle follows the voltage waveform V₂Ink was ejected and the drop volume of the ejected ink drop was 10.2 pl. The drop volume v of the three ejected drops is thus 10.0+10.1+ 10.2-30.3 pl, matching the total volume of ink for the current print job, 30.3 pl. By analogy, for each pixel pit of the OLED device, a sum of drop volumes matching 30.3pl can be obtained.

In the inkjet printing method, a plurality of target ink drop volumes which are matched with the set ink total volume after summation are screened out from the candidate ink drop volumes, nozzle-waveform combinations corresponding to the target ink drop volumes are obtained, and the nozzle-waveform combinations are sent to the inkjet printing equipment.

In another embodiment, as shown in fig. 6, a flow chart of a step of screening out a plurality of target ink drop volumes from candidate ink drop volumes, where the candidate ink drop volumes have corresponding nozzle identifications, and the step S504 may specifically include the following sub-steps:

a substep S11 of determining a nozzle identification to be processed among the plurality of nozzle identifications;

a substep S12, determining whether the candidate ink drop volumes corresponding to the nozzle identifier to be processed include the target ink drop volumes; if yes, go to step S13, otherwise go to step S14;

a substep S13, extracting the target ink drop volumes from the candidate ink drop volumes corresponding to the nozzle identification to be processed;

and a substep S14 of obtaining an adjacent nozzle identification of the nozzle identification to be processed, and extracting the target ink drop volumes from the candidate ink drop volume of the nozzle identification to be processed and the candidate ink drop volume of the adjacent nozzle identification.

Specifically, the corresponding nozzle identifications may be marked for a plurality of candidate ink drop volumes, and when screening the target ink drop volume from the plurality of candidate ink drop volumes, one nozzle identification may be determined first as the nozzle identification to be processed. Then, among the candidate ink drop volumes, a plurality of candidate ink drop volumes corresponding to the nozzle identification to be processed are determined, and whether a plurality of target ink drop volumes with a summation value of the set total ink volume are included in the candidate ink drop volumes is judged.

If the candidate ink drop volume corresponding to the nozzle identifier to be processed contains a plurality of target ink drop volumes, the target ink drop volumes can be directly extracted from the candidate ink drop volumes.

If the candidate ink drop volume corresponding to the nozzle identifier to be processed does not contain a plurality of target ink drop volumes, the adjacent nozzle identifier of the nozzle identifier to be processed needs to be further determined, and a plurality of target ink drop volumes are extracted from the candidate ink drop volume corresponding to the nozzle identifier to be processed and the candidate ink drop volume of the adjacent nozzle identifier, namely the candidate ink drop volumes of the two nozzle identifiers.

In an actual inkjet printing scenario, if multiple target drop volumes involve different nozzles, the inkjet print head may need to be moved to adjust the nozzle positions, thereby increasing the printing time. Therefore, the preferred printing method is to use the same nozzle for ink ejection. Accordingly, when the target ink drop volume is screened, the target ink drop volume is screened from the candidate ink drop volumes of the same nozzle identification preferentially. However, if the target ink drop volume cannot be screened out from the candidate ink drop volumes of a certain nozzle identifier, the adjacent nozzle identifiers can be selected, and part of the target ink drop volume can be selected from the candidate ink drop volumes of the adjacent nozzle identifiers, so that the selection source of the candidate ink drop volumes is enlarged, the probability of obtaining a plurality of target ink drop volumes is increased, excessive printing time is not increased, and the efficiency of ink-jet printing is improved.

In practical application, the formula Σ (v) can be used_n)＝v_totalAnd (6) judging. It is composed ofIn, v_nFor the currently selected candidate drop volume, v_totalThe total volume of ink set for the current print job. By selecting a plurality of candidate drop volumes and summing them until a sum value v is obtained_totalA number of candidate drop volumes v_nAs a plurality of target drop volumes.

In another embodiment, the nozzle identifier has a corresponding position, and the step of acquiring the adjacent nozzle of the nozzle identifier to be processed in the sub-step S14 may specifically be:

respectively calculating the distances between the positions corresponding to other nozzle identifications and the positions corresponding to the to-be-processed nozzle identifications to obtain a plurality of distances; determining a minimum distance among the plurality of distances; and taking the nozzle mark corresponding to the minimum distance as the adjacent nozzle mark.

The position corresponding to the nozzle identifier may include information for recording an actual nozzle position corresponding to the nozzle identifier on the inkjet printing apparatus.

Specifically, in order to determine the adjacent nozzle identifiers, the positions corresponding to the respective nozzle identifiers may be determined first, the distances between the position of the nozzle identifier to be processed and the positions of the other nozzle identifiers are calculated, thereby obtaining a plurality of distances, the minimum distance is determined therefrom, and the nozzle identifier having the minimum distance from the position of the nozzle identifier to be processed is taken as the adjacent nozzle identifier.

Through the nozzle identification with minimum distance as adjacent nozzle identification, be convenient for when carrying out the printing task, reduce the time that inkjet printer head removed in order to adjust the nozzle, promoted inkjet printing's efficiency.

In practical application, a distance threshold may be set, and when the minimum distance is greater than the distance threshold, the nozzle identifier is not selected as an adjacent nozzle identifier, so as to avoid an excessive moving distance of the inkjet print head.

In another embodiment, the candidate ink drop volumes have corresponding deviation values, and the sub-step S12 may specifically be:

judging whether the target ink drop volumes are contained in the candidate ink drop volumes corresponding to the nozzle identification to be processed and having the range of the first deviation value N1; wherein N1 is more than or equal to 0; if not, further judging whether the target ink drop volumes are contained in the candidate ink drop volumes which correspond to the to-be-processed nozzle identification and have the range of the second deviation value N2; wherein N2 is more than N1 and is more than or equal to 0; if not, judging that the candidate ink drop volume corresponding to the nozzle identification to be processed does not contain the target ink drop volumes.

The deviation value in the above steps may include a difference between the candidate ink drop volume and a preset standard ink drop volume. For example, the candidate drop volume is 10.2pl, the preset standard drop volume is 10.0pl, and the deviation value is 0.2 pl.

Specifically, in order to improve the screening efficiency, when determining whether or not the target ink droplet volume is included with respect to the candidate ink droplet volumes of the nozzle identification to be processed, a plurality of candidate ink droplet volumes having the range of the first deviation value N1, in which it is determined whether or not the plurality of target ink droplet volumes are included, may be first determined.

If so, a plurality of target drop volumes may be extracted directly from the plurality of candidate drop volumes.

If not, it is necessary to further determine a plurality of candidate ink drop volumes having the second deviation value N2 range, and determine whether the plurality of target ink drop volumes are included in the plurality of candidate ink drop volumes having the first deviation value N1 range and the plurality of candidate ink drop volumes having the second deviation value N2 range.

If so, a plurality of target drop volumes may be extracted therein.

If not, it can be determined that the candidate ink drop volume corresponding to the nozzle identifier to be processed does not contain a plurality of target ink drop volumes.

In a practical application scenario, each nozzle has multiple candidate drop volumes, if according to the formula Σ (v)_n)＝v_totalIf the target ink drop volumes are contained, the processing time is long.

For example, the ink population of the current print jobThe product is 30.3pl, corresponding to a standard drop volume of 10.1pl, the current nozzle identification INJ₀₀₁The corresponding candidate ink drop volume is 9.7 to 10.3pl, and multiple selection, summation and judgment processes are required to be performed to judge whether multiple target ink drop volumes exist in the multiple candidate ink drop volumes.

Therefore, it is possible to preferentially extract a plurality of target ink droplet volumes in the candidate ink droplet volumes having smaller deviation values to reduce the processing time while the target ink droplet volumes are screened out.

For example, the total ink volume is 30.3pl, the first deviation value is [0, 0.1pl ], and the corresponding candidate ink drop volumes are 10.0pl, 10.1pl and 10.2pl, and the sum of the three candidate ink drop volumes is selected, so that the total ink volume of 10.1+10.0+10.2 equals 30.3pl, which matches the set total ink volume of 30.3 pl.

When a plurality of target ink drop volumes cannot be extracted from the candidate ink drop volumes with the smaller deviation values, the target ink drop volumes are further extracted from the candidate ink drop volumes with the larger deviation values, so that the target ink drop volumes are obtained from the candidate ink drop volumes of the same nozzle mark.

In another embodiment, the step S502 may specifically be:

acquiring a plurality of actual ink drop volumes corresponding to the nozzle mark to be processed, and acquiring a standard ink drop volume corresponding to the total ink volume; calculating deviation values of the actual ink drop volumes of the nozzle marks to be processed and the standard ink drop volume to obtain a plurality of deviation values; acquiring the actual ink drop volume with the range of the first deviation value N1 and the actual ink drop volume with the range of the second deviation value N2 as the candidate ink drop volume corresponding to the nozzle identification to be processed.

The actual ink drop volume includes an ink drop volume obtained after the ink jet printing device corresponding to the physical nozzle of the nozzle mark is subjected to drop titration correction.

Wherein the standard ink drop volume includes a desired volume of each ink drop set according to the total volume of the ink.

Specifically, when acquiring the candidate ink droplet volume, the actual ink droplet volume corresponding to the nozzle identification may be acquired first, and at the same time, the standard ink droplet volume may be acquired.

As has been explained hereinbefore, the total volume of ink v can be set according to the current print job_total. Then, according to the total volume of ink, the number of drops N can be set, and the standard drop volume can be obtained by the formula v_total＝ v₀N was obtained.

For example, the total volume of ink for the current print job is 30.3pl, and the deviation of the drop volume of one drop is in the range of [9.7,10.3]]If the intermediate value is 10.0, at least three ink droplets must be ejected to obtain 30.3pl of ink. Thus, N ═ 3 can be determined, and accordingly, the standard drop volume v₀This is 30.3/3-10.1 pl.

Then, a deviation value between a plurality of actual ink drop volumes of the nozzle identification and the standard ink drop volume may be calculated. The multiple deviation values obtained from the root can be according to the formula | v₀-v_n|_{Minimum size}And selecting the actual ink drop volume corresponding to the first deviation value and the second deviation value as a candidate ink drop volume, so that the difference between the selected candidate ink drop volume and the standard ink drop volume is minimized.

For example, the plurality of actual ink drop volumes are 10.3pl, 10.2pl, 10.1pl, 10.0pl, 9.9pl and 9.8pl, respectively, and the standard ink drop volume is 10.0pl according to | v |₀-v_nI, it can calculate |10.0-10.3pl | -0.3 pl, |10.0-10.2pl | -0.2 pl, |10.0-10.1pl | -0.1 pl … | -10.0-9.8 pl | -0.2 pl, the actual drop volumes with smaller deviation values are 10.0pl, 10.1pl and 9.9pl, the actual drop volumes with larger deviation values are 10.3pl, 10.2pl and 9.8pl, 10.0pl, 10.1pl and 9.9pl can be used as the first deviation value N1 range, the deviation values of 10.3pl, 10.2pl and 9.8pl, 10.0pl can be used as the second deviation value N2 range, the first deviation value N with the smallest value, the actual drop volume N36, and the second deviation value N candidate drop volume N can be used as the second deviation value N2 range, the deviation value N is smaller, and the candidate drop volume N is smaller than the second deviation value N36.

It should be noted that, determining the candidate ink drop volume of a certain nozzle identifier substantially determines the preferred voltage waveform of a certain nozzle, that is, a certain nozzle can eject ink drops according to the preferred voltage waveform.

It should be further noted that the first deviation value and the second deviation value are set to illustrate that, in practical applications, deviation values of multiple levels can be set by selecting candidate ink drop volumes according to different deviation values, which is not limited in the embodiments of the present application. Moreover, a person skilled in the art can set specific values of the first deviation value and the second deviation value according to actual needs, and the above values of the embodiments of the present application are only examples, and are not limited to the specific values of the deviation values.

In another embodiment, the step of acquiring a plurality of actual ink drop volumes corresponding to the to-be-processed nozzle identifier may specifically be:

acquiring a plurality of voltage waveforms; calling the voltage waveforms to perform drop titration correction on the solid nozzle corresponding to the nozzle identifier to be processed on the ink jet printing equipment to obtain actual drop volumes corresponding to the nozzle identifier to be processed

Specifically, the user can preliminarily set a plurality of voltage waveforms for the properties of the ink viscosity, the original ink droplet volume, and the like of the ink filling member. In practical application, voltage waveforms can be set by combining parameters such as ink jet speed and ink jet angle of the ink jet printing head, so that the ink jet printing head is controlled to perform drop titration correction on the entity nozzles corresponding to the processing nozzle identifiers according to the set voltage waveforms, and a plurality of drop volumes are obtained and serve as a plurality of actual drop volumes corresponding to the nozzle identifiers to be processed.

Fig. 7 is a schematic of a voltage waveform. As can be seen from the figure, the voltage waveform comprises a plurality of time points and corresponding voltage values, and the voltage values at different time points are different, thereby forming a voltage waveform. For the example in the figure, the voltage is 0V at 0-2 seconds, then the voltage increases to 30V, the voltage remains at 30V at the voltage peak between 3-7 seconds, then falls back to 0V at 8 seconds, which is one power cycle. A voltage waveform may include a plurality of supply cycles. By cycling the power in the voltage waveform, the volume of ink drops ejected by the nozzle can be controlled.

In another embodiment, the step of acquiring the plurality of voltage waveforms may specifically be:

receiving a voltage range and a time range; selecting a plurality of voltage values in the voltage range and a plurality of time values in the time range, thereby obtaining a plurality of sets of voltage-time values; generating corresponding voltage waveforms by respectively adopting the voltage-time values of each group to obtain a plurality of voltage waveforms

Specifically, an input interface may be provided on the inkjet printing terminal 102 for a user to input a voltage range and a time range. For example, the user may input a voltage range [ v1, v4], a time range [ t1, t4 ]. The inkjet printing terminal 102 may select a voltage value in the voltage range and a time value in the time range, and use the selected voltage value and time value to obtain a set of voltage-time values, and use the set of voltage-time values to generate a candidate voltage waveform. By analogy, a plurality of candidate voltage waveforms can be obtained. For example, v1, v2, v3 and v4 are selected from a voltage range [ v1, v4], t1, t2, t3 and t4 are selected from a time range [ t1, t4], one-to-one combination is performed on v1, v2, v3 and v4 and t1, t2, t3 and t4 to obtain 4 × 4-16 groups of voltage-time values, and 16 groups of voltage-time values are used to obtain 16 voltage waveforms.

FIG. 8 is a schematic diagram of an input interface. As can be seen from the figure, the user can input the voltage values v1, v2, v3 and v4 and the durations t1, t2, t3 and t4 on the input interface provided by the inkjet printing terminal 102, and the 16 voltage waveforms are combined according to the input voltage values and durations.

In another embodiment, the step S506 may specifically be:

acquiring a nozzle identifier corresponding to the target ink drop volume, and acquiring a voltage waveform corresponding to the target ink drop volume; and forming the nozzle-waveform combination by using the nozzle identification corresponding to the target ink drop volume and the voltage waveform corresponding to the target ink drop volume.

In particular, a plurality of candidate drop volumes have corresponding nozzle identifications and voltage waveforms, which, after determining a target drop volume, can be extracted to form a nozzle-waveform combination. For multiple target drop volumes, multiple nozzle-waveform combinations can be obtained.

For example, target drop volume v₁With corresponding nozzles INJ₀₀₁Sum voltage waveform V₁Thus, the nozzle INJ is composed₀₀₁Sum voltage waveform V₁To obtain a target ink drop volume v₁Corresponding nozzle-waveform combination M0001[ nozzle INJ ]₀₀₁-voltage waveform V₁]。

In another embodiment, as shown in fig. 9, there is provided an inkjet printing method, which is described by way of example as applied to the inkjet printing apparatus 104 in fig. 1, including the steps of:

step S902, receiving a nozzle-waveform combination; the nozzle-waveform combination is obtained from a plurality of target ink drop volumes; the plurality of target drop volumes are extracted from the candidate drop volumes; the sum of the multiple target drop volumes matches a set total ink volume.

Specifically, the inkjet printing device 104 may receive a plurality of nozzle waveform combinations of the inkjet printing terminal 102. The specific process of generating and sending the nozzle waveform combinations by the inkjet printing terminal 102 has been described in detail and will not be described in detail herein.

Step S904, a print job is executed according to the nozzle-waveform combination.

Specifically, inkjet printing device 104, upon receiving a nozzle waveform combination, may perform a print job in accordance with the nozzle-waveform combination.

In another embodiment, the nozzle-waveform combination is composed of a nozzle identifier and a voltage waveform, and the step S904 may specifically be:

triggering the entity nozzle corresponding to the nozzle identification on the ink-jet printing equipment to jet ink according to the voltage waveform

Specifically, the inkjet printing device 104 receives three nozzle-waveform combinations M0001. M0002 and M0003. Wherein the nozzle-waveform combination M0001 is [ nozzle INJ ]₀₀₁-voltage waveform V₁]The nozzle-waveform combination M0002 is [ nozzle INJ ]₀₀₂-voltage waveform V₁]The nozzle-waveform combination M0003 is [ nozzle INJ ]₀₀₂-voltage waveform V₂]. The inkjet printing apparatus 104 combines M0001[ nozzle INJ ] according to the nozzle-waveform₀₀₁-voltage waveform V₁]Selecting the nozzle INJ₀₀₁The corresponding nozzle follows the voltage waveform V₁Ink jet, the volume of the ejected ink drop is 10.0 pl; according to nozzle-wave combinations M0002 nozzle INJ₀₀₂-voltage waveform V₁]Selecting the nozzle INJ₀₀₂The corresponding nozzle follows the voltage waveform V₁Ink jet, the volume of the ejected ink drop is 10.1 pl; according to nozzle-wave combinations M0003[ nozzle INJ ]₀₀₂-voltage waveform V₂]Selecting the nozzle INJ₀₀₂The corresponding nozzle follows the voltage waveform V₂Ink was ejected and the drop volume of the ejected ink drop was 10.2 pl. Thus, the ink drop volume v of the three ink drops ejected by the inkjet printing device 104 is 10.0+10.1+10.2 is 30.3pl, which matches the total ink volume of the current print job to 30.3 pl. By analogy, for each pixel pit of the OLED device, a sum of drop volumes matching 30.3pl can be obtained.

By the ink-jet printing method, the volumes of the ink in the pixel pits on the OLED device tend to be consistent, and the problems that the uniformity of the formed film of the ink material of the OLED device is poor and the performance of the OLED device is influenced are solved.

In another embodiment, the method further comprises:

Specifically, the inkjet printing device 104 may include a piezoelectric ceramic plate for deforming at a specific voltage to extrude the firing chamber to eject ink, and a digital control frequency converter may be provided for adjustment. Since the voltage waveforms in multiple nozzle-waveform combinations may be different, the voltage waveforms may change while a print job is being executed. Therefore, when the voltage waveform in the nozzle-waveform combination is detected to change, the voltage applied to the voltage ceramic plate and the time for applying the voltage can be adjusted according to the voltage and the time in the changed voltage waveform so as to change the deformation amplitude and the deformation frequency of the piezoelectric ceramic plate, and further change the ink drop volume of the ink drops ejected by the nozzle.

FIG. 10 is a schematic diagram of an optimized nozzle internal structure according to an embodiment of the present application. It can be seen that the optimized nozzle, in addition to comprising the firing chamber 1002 and the piezoceramic plate 1004, is provided with a digitally controlled frequency converter 1006. Through numerical control converter 1006, can adjust the voltage of applying on piezoelectric ceramic plate 1004 and the time of applying voltage to different voltage waveforms, the dynamics and the time that piezoelectric ceramic plate 1004 produced reciprocal deformation in order to extrude arouse chamber 1002 blowout ink droplet then can corresponding change to change the ink droplet volume of blowout ink droplet.

In order to facilitate a person skilled in the art to understand the embodiments of the present application in a deep manner, the following description will be given with reference to specific examples.

Assume that a plurality of nozzles are included in the current inkjet printhead, and the corresponding nozzle identifications are INJ₀₀₁、INJ₀₀₂、INJ₀₀₃、INJ₀₀₄、INJ₀₀₅And INJ₀₀₆. According to the prior art ink jet printing method, a voltage waveform V is received₁Each nozzle following a voltage waveform V₁Ink jet was carried out to obtain ink drop volumes as shown in table 1 below:

ink drop volume (pl)	INJ₀₀₁	INJ₀₀₂	INJ₀₀₃	INJ₀₀₄	INJ₀₀₅	INJ₀₀₆
							V₁	10.1	10.2	10.2	10.1	10.0	10.2

TABLE 1

Assuming that the total volume of ink for the current print job is 30.3pl, each nozzle needs to eject three drops of ink. Currently ink jetting is required for the 4 pixel wells A, B, C and D of an OLED device, using INJ₀₀₁、 INJ₀₀₂、INJ₀₀₃、INJ₀₀₄Ink is jetted to the four pixel pits respectively, and the actual total volume v of ink in each pixel pit_{Total volume}As shown in table 2 below:

	pixel pit A	Pixel pit B	Pixel pit C	Pixel pit D
						INJ₀₀₁	INJ₀₀₂	INJ₀₀₃	INJ₀₀₄
V₁	10.1	10.2	10.2	10.1
					V₁	10.1	10.2	10.2	10.1
V₁	10.1	10.2	10.2	10.1
					v_{Total volume}	30.3	30.6	30.6	30.3

TABLE 2

As can be seen from the above data, the actual total volume v of ink in pixel pits a and D, and pixel pits B and C between the respective pixel pits_{Total volume}The difference of 0.3pl exists, so that the uniformity of the film forming of the ink material of the OLED device is poor, and the performance of the OLED device is affected.

In the ink jet printing method provided according to the embodiment of the application, the voltage waveforms V are corresponding to a plurality of voltage waveforms₁、V₂、 V₃、V₄、V₅And V₆And respectively carrying out drop titration correction on the plurality of nozzles to obtain the drop volumes of the plurality of nozzles as candidate drop volumes of each nozzle identifier, as shown in table 3:

TABLE 3

For a set total ink volume of 30.3pl, among the plurality of candidate ink drop volumes, according to the formula Σ (v)_n) ＝v_totalAnd screening the target ink drop volume.

Suppose that the nozzle INJ is currently determined₀₀₁For identifying the nozzles to be treated, at the nozzles INJ₀₀₁Of the candidate ink droplet volumes of (1), candidate ink droplet volumes 10.0pl, 10.1pl, and 10.2pl having first deviation values of 0 and 0.1pl are determined, and the sum of 10.0pl, 10.1pl, and 10.2pl is calculated to be 30.3pl, matching the total volume of ink, with 10.0pl, 10.1pl, and 10.2pl as three target ink droplet volumes. Then, the corresponding nozzle identification and voltage waveforms of 10.0pl, 10.1pl and 10.2pl are determined to constitute nozzle-waveform combinations, and the corresponding three nozzle-waveform combinations [ INJ ] are obtained₀₀₁，V₃]、[INJ₀₀₁，V₄]And [ INJ₀₀₁，V₅]。

Next, the nozzle INJ is determined₀₀₂For identifying the nozzles to be treated, at the nozzles INJ₀₀₂Of the candidate ink drop volumes of (1), candidate ink drop volumes 10.1pl and 10.2pl having first deviation values of 0 and 0.1pl are determined, and a plurality of target ink drop volumes matching the total volume of the ink cannot be obtained. Thus, the second sample with 0.2pl was further determinedThe candidate drop volume of the two deviation values is 9.9 pl. In the candidate droplet volumes 10.1pl and 10.2pl of the first deviation value and the candidate droplet volume 9.9pl of the second deviation value, the sum is 30.2pl, and the sum does not match the set total volume of ink, and it is determined that a plurality of target droplet volumes cannot be obtained. Therefore, further determination of the adjacent nozzle identification is required. Due to the nozzle INJ₀₀₁And the nozzle mark INJ to be processed₀₀₂The distance between the positions is the shortest, and thus the nozzle INJ is determined₀₀₁Identifying adjacent nozzles. At INJ₀₀₂And INJ₀₀₁Of the candidate drop volumes of (2), the INJ can be determined₀₀₂Candidate drop volumes of 10.1pl and 10.2pl, and INJ₀₀₁10.0pl, and a sum of 30.3pl, matched the total ink volume and therefore could be selected as the target drop volume. Thus, INJ is determined₀₀₂Candidate droplet volumes of 10.0pl, 10.1pl and INJ₀₀₁The candidate ink drop volume 10.2pl is used as the target ink drop volume, and the corresponding nozzle-waveform combination is formed according to the corresponding nozzle identification and voltage waveform to obtain the corresponding three nozzle-waveform combination [ INJ ]₀₀₂，V₃]、[INJ₀₀₂，V₄]And [ INJ₀₀₁，V₃]. In the above manner, a plurality of nozzle-waveform combinations for each pixel pit can be obtained. The ink jet printing apparatus performs a print job based on the nozzle-waveform combination described above, the actual total volume of ink v in each pixel pit_{Total volume}As shown in table 4 below:

TABLE 4

It should be noted that, when performing inkjet printing on the OLED device, the OLED device is provided with a pixel pit matrix, the pixel pit matrix is composed of a plurality of rows of pixel pits, and when performing printing, the inkjet printhead ejects ink for each row of pixel pits through different nozzles, and after a printing task, the ink volume of each pixel pit in each row of pixel pits is the same, so for simplifying the description, the above example is described based on one pixel pit in one row of pixel pits.

When the ink jet printing device executes a printing task according to the nozzle-waveform combination, the corresponding entity nozzle is selected according to the nozzle identification in the nozzle-waveform, and ink is jetted according to the voltage waveform in the nozzle-waveform. As can be seen, the inkjet printing device selects INJ when the first drop is ejected, according to the nozzle-waveform combination₀₀₁、INJ₀₀₂、 INJ₀₀₃、INJ₀₀₄For the pixel pits A, B, C and D, respectively, according to the voltage waveform V₃、V₄And V₅Ink is sequentially ejected. Note that since [ INJ ] does not currently exist₀₀₂，V₅]And [ INJ₀₀₃，V₅]Nozzle-waveform combination (INJ)₀₀₂、INJ₀₀₃At voltage waveform V₅Is not the target drop volume), and thus, is in accordance with the voltage waveform V₅When ink is ejected, INJ₀₀₂And INJ₀₀₃And ink was not ejected. Then, according to [ INJ₀₀₁，V₃]And [ INJ₀₀₂，V₃]For pixel pit B and pixel pit C, moving the inkjet printhead to select INJ₀₀₁And INJ₀₀₂According to the voltage waveform V₃And (4) jetting ink. Thereby, the actual total volume v of ink in each pixel pit_{Total volume}Are all 30.3 pl. Because the ink volume in each pixel pit on the OLED device is consistent, the problems that the uniformity of the formed film of the ink material of the OLED device is poor and the performance of the OLED device is influenced are solved

It should be understood that, although the steps in the flowcharts of fig. 5, 6 and 9 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 5, 6, and 9 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternatingly with other steps or at least some of the sub-steps or stages of other steps.

In another embodiment, as shown in fig. 11, there is provided an inkjet printing apparatus including: a volume acquisition module 1102, a screening module 1104, a combination acquisition module 1106, and a combination transmission module 1108, wherein:

a volume obtaining module 1102 for obtaining a candidate ink drop volume;

a screening module 1104 for screening a plurality of target ink drop volumes from the candidate ink drop volumes; the sum of the volumes of the plurality of target ink drops is matched with the set total volume of ink;

a combination obtaining module 1106, configured to obtain a nozzle-waveform combination corresponding to each target ink droplet volume;

a combination sending module 1108, configured to send a plurality of nozzle-waveform combinations corresponding to the plurality of target ink droplet volumes to an inkjet printing apparatus, so that the inkjet printing apparatus executes a printing task according to the nozzle-waveform combinations.

In another embodiment, the candidate drop volumes have corresponding nozzle identifications, and the filtering module 1104 includes:

the identification determining submodule is used for determining the identification of the nozzle to be processed in the plurality of nozzle identifications;

the judgment submodule is used for judging whether the candidate ink drop volume corresponding to the nozzle identification to be processed contains the target ink drop volumes or not; if yes, executing a first extraction submodule; if not, executing a second extraction submodule;

the first extraction submodule is used for extracting the target ink drop volumes from the candidate ink drop volumes corresponding to the nozzle identification to be processed;

and the second extraction submodule is used for acquiring the adjacent nozzle identification of the nozzle identification to be processed and extracting the target ink drop volumes from the candidate ink drop volume of the nozzle identification to be processed and the candidate ink drop volume of the adjacent nozzle identification.

In another embodiment, the candidate drop volumes have corresponding deviation values, and the determining sub-module includes:

a first judging unit, configured to judge whether the target ink droplet volumes are included in candidate ink droplet volumes having a range of a first deviation value N1 corresponding to the nozzle identifier to be processed; wherein N1 is more than or equal to 0;

a second judging unit, configured to further judge whether the plurality of target ink droplet volumes are included in the candidate ink droplet volumes having the range of the first deviation value N1 and the candidate ink droplet volumes having the range of the second deviation value N2, which correspond to the nozzle identification to be processed; wherein N2 is more than N1 and is more than or equal to 0;

and the judging unit is used for judging that the candidate ink drop volumes corresponding to the nozzle identification to be processed do not contain the target ink drop volumes.

In another embodiment, the nozzle identification has a corresponding location, the second extraction submodule includes:

the distance calculation unit is used for calculating the distances between the positions corresponding to the other nozzle identifications and the positions corresponding to the to-be-processed nozzle identifications respectively to obtain a plurality of distances;

a minimum distance determination unit configured to determine a minimum distance among the plurality of distances;

and the identification determining unit is used for taking the nozzle identification corresponding to the minimum distance as the adjacent nozzle identification.

In another embodiment, the volume acquisition module 1102 includes:

the acquisition submodule is used for acquiring a plurality of actual ink drop volumes corresponding to the to-be-processed nozzle identification and acquiring a standard ink drop volume corresponding to the total ink volume;

the deviation value calculation submodule is used for calculating deviation values of the actual ink drop volumes of the nozzle identification to be processed and the standard ink drop volume to obtain deviation values;

and the ink drop volume determination submodule is used for acquiring the actual ink drop volume within the range of the first deviation value N1 and the actual ink drop volume within the range of the second deviation value N2 as candidate ink drop volumes corresponding to the nozzle identification to be processed.

In another embodiment, the obtaining sub-module includes:

a waveform acquisition unit configured to acquire a plurality of voltage waveforms;

and the correction unit is used for calling the voltage waveforms and carrying out drop titration correction on the solid nozzle corresponding to the nozzle identifier to be processed on the ink jet printing equipment to obtain a plurality of actual drop volumes corresponding to the nozzle identifier to be processed.

In another embodiment, the waveform obtaining unit includes:

a receiving subunit for receiving a voltage range and a time range;

a selecting subunit, configured to select a plurality of voltage values in the voltage range and a plurality of time values in the time range, thereby obtaining a plurality of sets of voltage-time values;

and the waveform generation subunit is used for generating corresponding voltage waveforms by respectively adopting the voltage-time values of each group to obtain a plurality of voltage waveforms.

In another embodiment, the combination obtaining module 1106 includes:

the identification and waveform acquisition submodule is used for acquiring a nozzle identification corresponding to the volume of the target ink drop and acquiring a voltage waveform corresponding to the volume of the target ink drop;

and the combination submodule is used for combining the nozzle identification corresponding to the target ink drop volume and the voltage waveform corresponding to the target ink drop volume into the nozzle-waveform combination.

In another embodiment, as shown in fig. 12, there is provided an inkjet printing apparatus including a receiving module 1202 and a task performing module 1204, wherein:

a receiving module 1202 for receiving a nozzle-waveform combination; the nozzle-waveform combination is obtained from a plurality of target ink drop volumes; the plurality of target drop volumes are extracted from the candidate drop volumes; the sum of the volumes of the plurality of target ink drops is matched with the set total volume of ink;

a job execution module 1204, configured to execute a print job according to the nozzle-waveform combination.

In another embodiment, the nozzle-waveform combination is comprised of a nozzle identification and a voltage waveform, and the task execution module 1204 comprises:

and the triggering submodule is used for triggering the entity nozzle corresponding to the nozzle identification on the ink-jet printing equipment to jet ink according to the voltage waveform.

In another embodiment, the apparatus further comprises:

and the adjusting module is used for adjusting the voltage applied to the piezoelectric ceramic plate of the ink-jet printing equipment and the voltage applying time when the voltage waveform is detected to change.

In another embodiment, as shown in fig. 13, there is provided an inkjet printing system 1300, comprising:

an inkjet printing terminal 1302 and an inkjet printing apparatus 1304;

the inkjet printing terminal 1302 includes:

a combination sending module, configured to send a plurality of nozzle-waveform combinations corresponding to the plurality of target ink droplet volumes to an inkjet printing device 1304, so that the inkjet printing device 1304 executes a printing task according to the nozzle-waveform combinations;

the inkjet printing apparatus 1304 includes:

a receiving module for receiving a nozzle-waveform combination of the inkjet printing terminal 1302;

For specific limitations of the inkjet printing apparatus and inkjet printing system, reference may be made to the above limitations of the inkjet printing method, which are not described in detail herein. The various modules in the inkjet printing apparatus and inkjet printing system described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 14. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement an inkjet printing method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.

Those skilled in the art will appreciate that the architecture shown in fig. 14 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:

acquiring a candidate ink drop volume;

In one embodiment, the processor, when executing the computer program, further performs the steps of:

determining a minimum distance among the plurality of distances;

acquiring a plurality of voltage waveforms;

receiving a voltage range and a time range;

executing a print job according to the nozzle-waveform combination.

In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:

acquiring a candidate ink drop volume;

In one embodiment, the computer program when executed by the processor further performs the steps of:

determining a minimum distance among the plurality of distances;

acquiring a plurality of voltage waveforms;

receiving a voltage range and a time range;

executing a print job according to the nozzle-waveform combination.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A method of inkjet printing, the method comprising:

acquiring a candidate ink drop volume; the candidate drop volumes have corresponding nozzle identifications;

screening out a plurality of target ink drop volumes from the candidate ink drop volumes; the method specifically comprises the following steps: determining a nozzle identifier to be processed in the plurality of nozzle identifiers; judging whether the candidate ink drop volumes corresponding to the nozzle identification to be processed contain the target ink drop volumes or not; if yes, extracting the multiple target ink drop volumes from the candidate ink drop volumes corresponding to the nozzle identification to be processed; if not, acquiring an adjacent nozzle identifier of the nozzle identifier to be processed, and extracting the multiple target ink drop volumes from the candidate ink drop volume of the nozzle identifier to be processed and the candidate ink drop volume of the adjacent nozzle identifier; wherein a sum of the plurality of target ink drop volumes matches a set total ink volume;

acquiring a nozzle-waveform combination corresponding to each target ink droplet volume; the method specifically comprises the following steps: acquiring a nozzle identifier corresponding to the target ink drop volume, and acquiring a voltage waveform corresponding to the target ink drop volume; forming the nozzle-waveform combination by using the nozzle identification corresponding to the target ink drop volume and the voltage waveform corresponding to the target ink drop volume;

2. The method of claim 1, wherein the candidate drop volumes have corresponding deviation values, and wherein the step of determining whether the candidate drop volumes corresponding to the nozzle identification to be processed contain the plurality of target drop volumes comprises:

3. The method of claim 1, wherein the nozzle identification has a corresponding position, and the step of obtaining neighboring nozzles of the nozzle identification to be processed comprises:

determining a minimum distance among the plurality of distances;

4. The method of claim 2, wherein the step of obtaining candidate drop volumes comprises:

5. The method of claim 4, wherein the step of obtaining a plurality of actual drop volumes corresponding to the nozzle identification to be processed comprises:

acquiring a plurality of voltage waveforms;

6. The method of claim 5, wherein the step of obtaining a plurality of voltage waveforms comprises:

receiving a voltage range and a time range;

7. A method of inkjet printing, the method comprising:

receiving a nozzle-waveform combination; the nozzle-waveform combination is obtained from a plurality of target ink drop volumes, and the nozzle-waveform combination is composed of a nozzle identification and a voltage waveform; the sum of the volumes of the plurality of target ink drops is matched with the set total volume of ink; the plurality of target drop volumes are extracted from candidate drop volumes having corresponding nozzle identifications; the extraction method comprises the following steps: determining a nozzle identifier to be processed in the plurality of nozzle identifiers; judging whether the candidate ink drop volumes corresponding to the nozzle identification to be processed contain the target ink drop volumes or not; if yes, extracting the multiple target ink drop volumes from the candidate ink drop volumes corresponding to the nozzle identification to be processed; if not, acquiring an adjacent nozzle identifier of the nozzle identifier to be processed, and extracting the multiple target ink drop volumes from the candidate ink drop volume of the nozzle identifier to be processed and the candidate ink drop volume of the adjacent nozzle identifier;

executing a print job according to the nozzle-waveform combination, specifically comprising: and triggering the entity nozzle corresponding to the nozzle identification on the ink-jet printing equipment to jet ink according to the voltage waveform.

8. The method of claim 7, further comprising:

9. An inkjet printing apparatus, characterized in that the apparatus comprises:

the volume acquisition module is used for acquiring the volume of the candidate ink drop; the candidate drop volumes have corresponding nozzle identifications;

the screening module is used for screening out a plurality of target ink drop volumes from the candidate ink drop volumes; the method specifically comprises the following steps: determining a nozzle identifier to be processed in the plurality of nozzle identifiers; judging whether the candidate ink drop volumes corresponding to the nozzle identification to be processed contain the target ink drop volumes or not; if yes, extracting the multiple target ink drop volumes from the candidate ink drop volumes corresponding to the nozzle identification to be processed; if not, acquiring an adjacent nozzle identifier of the nozzle identifier to be processed, and extracting the multiple target ink drop volumes from the candidate ink drop volume of the nozzle identifier to be processed and the candidate ink drop volume of the adjacent nozzle identifier; wherein a sum of the plurality of target ink drop volumes matches a set total ink volume;

the combination acquisition module is used for acquiring nozzle-waveform combinations corresponding to the volumes of the target ink drops; the method specifically comprises the following steps: acquiring a nozzle identifier corresponding to the target ink drop volume, and acquiring a voltage waveform corresponding to the target ink drop volume; forming the nozzle-waveform combination by using the nozzle identification corresponding to the target ink drop volume and the voltage waveform corresponding to the target ink drop volume;

10. An inkjet printing apparatus, characterized in that the apparatus comprises:

a receiving module for receiving a nozzle-waveform combination; the nozzle-waveform combination is obtained from a plurality of target ink drop volumes, and the nozzle-waveform combination is composed of a nozzle identification and a voltage waveform; the sum of the volumes of the plurality of target ink drops is matched with the set total volume of ink; the plurality of target drop volumes are extracted from candidate drop volumes having corresponding nozzle identifications; the extraction method comprises the following steps: determining a nozzle identifier to be processed in the plurality of nozzle identifiers; judging whether the candidate ink drop volumes corresponding to the nozzle identification to be processed contain the target ink drop volumes or not; if yes, extracting the multiple target ink drop volumes from the candidate ink drop volumes corresponding to the nozzle identification to be processed; if not, acquiring an adjacent nozzle identifier of the nozzle identifier to be processed, and extracting the multiple target ink drop volumes from the candidate ink drop volume of the nozzle identifier to be processed and the candidate ink drop volume of the adjacent nozzle identifier;

the task execution module is used for executing a printing task according to the nozzle-waveform combination, and specifically comprises: and triggering the entity nozzle corresponding to the nozzle identification on the ink-jet printing equipment to jet ink according to the voltage waveform.

11. An inkjet printing system, comprising:

an inkjet printing terminal and an inkjet printing apparatus;

the inkjet printing terminal includes:

the combination obtaining module is used for obtaining the nozzle-waveform combination corresponding to each target ink drop volume, and specifically comprises: acquiring a nozzle identifier corresponding to the target ink drop volume, and acquiring a voltage waveform corresponding to the target ink drop volume; forming the nozzle-waveform combination by using the nozzle identification corresponding to the target ink drop volume and the voltage waveform corresponding to the target ink drop volume;

the inkjet printing apparatus includes:

12. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 8.

13. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 8.