Driving system for ink jet device and ink jet device

Abstract

The utility model provides a driving system for an ink jet device and the ink jet device. The driving system comprises at least two pulse width modulators, a plurality of waveform switching circuits, a plurality of driving circuit modules and a control signal output circuit, wherein the at least two pulse width modulators are electrically connected to the plurality of waveform switching circuits respectively; the plurality of waveform switching circuits are respectively connected to the plurality of driving circuit modules; the plurality of driving circuit modules are electrically connected to the plurality of spray heads respectively so as to drive the plurality of spray heads to realize printing; and the output of the control signal output circuit is electrically connected to the plurality of waveform switching circuits respectively, so that independent control signals are provided for the plurality of waveform switching circuits respectively. The driving system for the ink-jet device can realize finer control on the nozzle of the ink-jet device.

Description

Technical Field

[0001] The present application relates to the field of inkjet devices, and in particular, to a driving system and method for an inkjet device and an inkjet device. Background Art

[0002] With the advancement of technology, inkjet devices have gradually developed more functions and technologies. Among them, continuous inkjet printing technology is to deliver ink to the nozzle in a continuous manner, but the ink in the nozzle is not stable enough and cannot achieve fine printing effects. Valve-type inkjet devices drip ink on demand, and the inkjet is more precise, which can achieve higher printing quality and stability.

[0003] The existing valve-type inkjet device is generally composed of several solenoid valves. The solenoid valve is a soft mechanical structure. It is difficult to ensure the consistency of the factory. It is necessary to set the drive waveform to ensure the consistency of each point. The drive waveform includes the drive voltage and the drive time. The valve-type inkjet device has high drive power consumption and it is difficult to adjust the drive voltage. Therefore, it is generally a factory fixed value. The waveform is mainly changed by adjusting the drive time to fine-tune the printing effect.

[0004] Therefore, a driving system for an inkjet device is needed to effectively control the movement of the inkjet head of the inkjet device by accurately setting the driving waveform. Summary of the invention

[0005] The present application aims to provide a driving system and method for an inkjet device and an inkjet device, which can achieve precise control of the inkjet device nozzle.

[0006] According to one aspect of the present application, a driving system for an inkjet device is provided, the driving system comprising at least two pulse width modulators, a plurality of waveform switching circuits, a plurality of driving circuit modules and a control signal output circuit, wherein:

[0007] The at least two pulse width modulators are electrically connected to the plurality of waveform switching circuits respectively;

[0008] The plurality of waveform switching circuits are respectively connected to the plurality of driving circuit modules;

[0009] The plurality of driving circuit modules are electrically connected to the plurality of nozzles respectively, so as to drive the plurality of nozzles to realize printing;

[0010] The outputs of the control signal output circuit are electrically connected to the plurality of waveform switching circuits, respectively, so as to provide independent control signals to the plurality of waveform switching circuits, respectively.

[0011] According to some embodiments, the plurality of driving circuit modules output amplified waveform signals respectively according to the waveforms provided by the plurality of waveform switching circuits.

[0012] According to some embodiments, the spray head comprises a solenoid valve type spray head.

[0013] According to some embodiments, the at least two pulse width modulators include a first pulse width modulator, a second pulse width modulator, and a third pulse width modulator.

[0014] According to some embodiments, the first pulse width modulator, the second pulse width modulator, and the third pulse width modulator output three different waveforms, so as to be applicable to different stages of driving.

[0015] According to some embodiments, the three different waveforms include:

[0016] The first waveform output by the first pulse width modulator is a start-up waveform used for starting the nozzle;

[0017] The second pulse width modulator outputs a second waveform, wherein the second waveform is a holding waveform and is used to maintain the operation of the nozzle;

[0018] The third waveform output by the third pulse width modulator is a release waveform, which is used for releasing the nozzle.

[0019] According to some embodiments, the duty cycle and cycle time of the three different waveforms are set independently; the duty cycle of the first waveform is greater than the duty cycle of the second waveform, that is, the duty cycle of the second waveform is smaller than the duty cycle of the first waveform.

[0020] According to some embodiments, the plurality of waveform switching circuits comprises a plurality of multiplexers.

[0021] According to some embodiments, the plurality of nozzles include thirty-two nozzles, and the thirty-two nozzles form a nozzle array.

[0022] According to another aspect of the present application, an inkjet device is provided, wherein the inkjet device comprises any one of the driving systems described above.

[0023] According to another aspect of the present application, there is provided a method for an inkjet device, comprising:

[0024] Different waveforms are provided to the nozzle in different driving stages, wherein the duty ratios and / or cycle times of the different waveforms are set separately.

[0025] According to some embodiments, the different waveforms include:

[0026] A first waveform, wherein the first waveform is a start-up waveform and is used for starting the nozzle;

[0027] A second waveform, wherein the second waveform is a holding waveform and is used to maintain the operation of the nozzle;

[0028] The third waveform is a release waveform, which is used for releasing the nozzle.

[0029] According to some embodiments, the duty cycle of the first waveform is greater than the duty cycle of the second waveform, that is, the duty cycle of the second waveform is smaller than the duty cycle of the first waveform.

[0030] According to some embodiments, different waveforms are provided to the nozzle at different stages of driving, including:

[0031] Providing different waveforms to a plurality of waveform switching circuits respectively through at least two pulse width modulators;

[0032] Providing independent control signals to the plurality of waveform switching circuits respectively through a control signal output circuit;

[0033] Providing waveforms to the plurality of driving circuit modules respectively through the plurality of waveform switching circuits;

[0034] The plurality of drive circuit modules are used to drive the plurality of nozzles respectively to realize printing.

[0035] According to some embodiments, the plurality of driving circuit modules output amplified waveform signals respectively according to the waveforms provided by the plurality of waveform switching circuits.

[0036] According to some embodiments, the at least two pulse width modulators include a first pulse width modulator, a second pulse width modulator, and a third pulse width modulator.

[0037] According to some embodiments, the first waveform is generated by the first pulse width modulator; the second waveform is generated by the second pulse width modulator; and the third waveform is generated by the third pulse width modulator.

[0038] According to some embodiments, the plurality of waveform switching circuits comprises a plurality of multiplexers.

[0039] According to some embodiments, the nozzle controls the working state of the nozzle through a built-in solenoid valve.

[0040] According to some embodiments, the control signal output circuit communicates with a host computer.

[0041] According to the driving system for the inkjet device according to the exemplary embodiment, independent control signals can be provided to the multiple nozzles of the inkjet device, thereby realizing high-precision control of the nozzles and achieving a more sophisticated printing effect.

[0042] According to an embodiment of the present application, the driving system utilizes pulse width modulation to perform high-speed analog switch switching through a waveform switching circuit to achieve high-efficiency control of the inkjet device.

[0043] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for describing the embodiments are briefly introduced below.

[0045] Figure 1 A block diagram of a driving system according to an exemplary embodiment of the present application is shown.

[0046] Figure 2 A method flow chart according to an exemplary embodiment of the present application is shown.

[0047] Figure 3 A schematic diagram illustrating a pulse width modulator output waveform according to some example embodiments.

[0048] Figure 4 A schematic diagram showing an output waveform of a pulse width modulator according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0049] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0050] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0051] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0052] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0053] It should be understood that although the terms first, second, third, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another component. Therefore, the first component discussed below can be referred to as the second component without departing from the teachings of the concepts of the present application. As used herein, the term "and / or" includes any one of the associated listed items and all combinations of one or more.

[0054] Those skilled in the art will appreciate that the drawings are merely schematic diagrams of example embodiments, and the modules or processes in the drawings are not necessarily necessary for implementing the present application, and therefore cannot be used to limit the scope of protection of the present application.

[0055] In the field of inkjet devices, valve-type inkjet devices use the principle of pressure fluctuations to drive the ink to print on the surface of the product through compressed air through a solenoid valve. Compared with other types of inkjet devices that need to use ink corresponding to their own principles, valve-type inkjet devices do not have high requirements for ink. Even the ink used by inkjet devices based on other principles can also be used for the operation of valve-type inkjet devices. Therefore, valve-type inkjet devices are more adaptable to inks, can achieve high-speed printing in a smaller space, and have higher accuracy in the location of ink drops.

[0056] In the prior art, the drive waveform setting of the valve-type inkjet device can only adjust the drive time, and the adjustment ability and the adaptable working conditions are limited, which affects the expansion of application scenarios. Due to the limitations of the drive waveform adjustment, manufacturers often need to go to the site to adjust the mechanical structure according to the customer's ink specifications. In the case of changing the ink, on-site adjustments are required again, which is time-consuming and labor-intensive.

[0057] To this end, the present application proposes a driving system for an inkjet device. According to an exemplary embodiment, a pulse width modulator outputs driving waveforms suitable for different working conditions, and a waveform switching circuit is controlled by software settings to provide independent control signals to each nozzle. By using pulse width modulation, a more sophisticated control of the valve-type inkjet device is achieved.

[0058] Before describing the embodiments of the present application, some terms or concepts involved in the embodiments of the present application are explained.

[0059] DOD (Drop-On-Demand) is an inkjet technology used in inkjet devices. DOD inkjet devices use electromagnetic valves to spray ink on demand, so they have higher accuracy and faster speed and can achieve high-speed printing.

[0060] PWM (Pulse Width Modulation) is a pulse width modulation, which is a common analog control method. The basic principle of PWM is to control the current or voltage change by changing the pulse width. In the DOD inkjet device, it is used to control the action time of the solenoid valve.

[0061] TTL (Transistor-Transistor Logic) is a logic standard widely used in the microelectronics industry. TTL is an integrated circuit design standard that uses two transistors to form a logic gate to form various logic functions.

[0062] According to an example embodiment, a method for an inkjet device provides different waveforms to a nozzle at different stages of driving, wherein the duty cycles and / or cycle times of the different waveforms are set separately. According to some embodiments, the different waveforms may include a first waveform, a second waveform, and a third waveform. For example, the first waveform is a start-up waveform, which is used to start the nozzle; the second waveform is a hold waveform, which is used to maintain the operation of the nozzle; and the third waveform is a release waveform, which is used to release the nozzle. According to some embodiments, the duty cycle of the first waveform is greater than the duty cycle of the second waveform, that is, the duty cycle of the second waveform is less than the duty cycle of the first waveform.

[0063] The exemplary embodiments of the present application are described below in conjunction with the accompanying drawings.

[0064] Figure 1 A block diagram of a driving system according to an exemplary embodiment of the present application is shown.

[0065] See also Figure 1 , the driving system includes a pulse width modulator 1-N, a waveform switching circuit 2-M, a driving circuit module 3-M, a nozzle 4-M and a control signal output circuit 5. The driving system for an inkjet device according to an exemplary embodiment of the present application includes at least two pulse width modulators, a plurality of waveform switching circuits, a plurality of driving circuit modules and a plurality of nozzles.

[0066] Below Figure 1 The three pulse width modulators and thirty-two nozzles shown are described as an example, and the thirty-two nozzles constitute a nozzle array.

[0067] According to an exemplary embodiment, the at least two pulse width modulators include a first pulse width modulator 1-1, a second pulse width modulator 1-2, and a third pulse width modulator 1-3. The first pulse width modulator 1-1, the second pulse width modulator 1-2, and the third pulse width modulator 1-3 are electrically connected to the plurality of waveform switching circuits 2-1, 2-2...2-32, respectively, the plurality of waveform switching circuits 2-1, 2-2...2-32 are respectively connected to the plurality of drive circuit modules 3-1, 3-2...3-32, the plurality of drive circuit modules 3-1, 3-2...3-32 are respectively electrically connected to the plurality of nozzles 4-1, 4-2...4-32, so as to drive the plurality of nozzles to achieve printing.

[0068] The outputs of the control signal output circuit 5 are electrically connected to the multiple waveform switching circuits 2-1, 2-2...2-32, respectively, so as to provide independent control signals to the multiple waveform switching circuits 2-1, 2-2...2-32, respectively.

[0069] According to some embodiments, in the driving system, the first pulse width modulator 1-1, the second pulse width modulator 1-2 and the third pulse width modulator 1-3 respectively provide waveforms of different stages of the driving signal, which are ultimately used to control the driving of the solenoid valve of the inkjet device, thereby controlling the ejection amount and printing speed of the ink.

[0070] The control signal output circuit 5 can provide 32 different control signals to the waveform switching circuit 2 to achieve independent control of 32 nozzle waveforms. The waveform switching circuit 2 switches different waveforms provided by the pulse width modulator at different time points according to the set parameters.

[0071] According to some embodiments, the first pulse width modulator 1-1, the second pulse width modulator 1-2 and the third pulse width modulator 1-3 provide three different waveforms to the plurality of waveform switching circuits 2-1, 2-2...2-32, so as to be suitable for different stages of driving. For example, the three different waveforms include: the first waveform output by the first pulse width modulator 1-1, the first waveform is a start waveform, used for starting the nozzle; the second waveform output by the second pulse width modulator 1-2, the second waveform is a hold waveform, used for maintaining the operation of the nozzle; the third waveform output by the third pulse width modulator 1-3, the third waveform is a release waveform, used for releasing the nozzle.

[0072] According to some embodiments, the duty cycle and cycle time of the three different waveforms are set independently; the duty cycle of the first waveform is greater than the duty cycle of the second waveform, that is, the duty cycle of the second waveform is smaller than the duty cycle of the first waveform.

[0073] According to some embodiments, the plurality of waveform switching circuits 2-1, 2-2...2-32 include a plurality of multiplexers for selecting one of three different waveforms and connecting it to the plurality of driving circuit modules 3-1, 3-2...3-32.

[0074] The multiple driving circuit modules 3-1, 3-2...3-32 respectively output amplified waveform signals according to the waveforms provided by the multiple waveform switching circuits 2-1, 2-2...2-32 to control the multiple nozzles 4-1, 4-2...4-32.

[0075] For example, the front end of the driving circuit module 3 is a fast switching transistor, which can withstand a large power in the DOD inkjet device. The fast switching transistor can control the opening or closing of the solenoid valve, thereby realizing the control of the ink jetting state.

[0076] According to some embodiments, the driving circuit 3 amplifies the voltage of the waveform provided by the waveform switching circuit 2 to generate a sufficiently large current to drive the solenoid valve. At the same time, a control signal is output, which controls the first Darlington tube, which is connected to the positive electrode of the nozzle after high-rate current amplification. The function of the first Darlington tube is to amplify the output signal of the driving circuit so that it can drive the nozzle, thereby achieving high-rate current amplification and effectively driving the solenoid valve to achieve better printing effect.

[0077] The nozzle 4 includes a solenoid valve nozzle. In order to disconnect the power supply in time after each inkjet cycle, the drive circuit module 3 is used to connect the negative electrode of the nozzle and the ground through the second Darlington tube. When the waveform switching circuit 2 provides a switch signal, the second Darlington tube is turned on to ground the nozzle, thereby preventing the solenoid valve from continuing to operate. The nozzle stops working and waits for the next start signal.

[0078] According to some embodiments, the control signal output circuit 5 also has other auxiliary functions, including communication with a host computer, and the control signal output circuit can be connected to a computer or other external device via RS232, RS485 or other protocols to send and receive instructions or data. A management display module displays the working status and other information in the production process so that the operator can understand the working status of the inkjet device in a timely manner. In addition, during the operation of the inkjet device, devices such as encoders and Hall sensors can also send signals to the control signal output circuit 5 so that the operator can track and monitor the working status of the machine.

[0079] The inkjet device using the driving system can provide independent control signals to multiple nozzles, thereby achieving higher resolution. In addition, the inkjet device controlled by the driving system can also simplify the design of the system and reduce the production cost of the equipment.

[0080] Figure 2 A flow chart showing a method of operating a driving system according to an exemplary embodiment of the present application.

[0081] In S101 , a pulse width modulator provides different waveforms to a plurality of waveform switching circuits respectively.

[0082] According to an exemplary embodiment, during the operation of the inkjet device, different waveforms are provided by the pulse width modulator at different stages of driving. For example, the pulse width modulator may include a first pulse width modulator, a second pulse width modulator, and a third pulse width modulator, and the first pulse width modulator, the second pulse width modulator, and the third pulse width modulator respectively provide different waveforms to a plurality of waveform switching circuits.

[0083] For example, the first pulse width modulator outputs a first waveform, which is a start waveform used to start the nozzle; the second pulse width modulator 1-2 outputs a second waveform, which is a hold waveform used to maintain the nozzle operation; the third pulse width modulator 1-3 outputs a third waveform, which is a release waveform used to release the nozzle. According to some embodiments, the duty cycle and cycle time of the three different waveforms are set independently; the duty cycle of the first waveform is greater than the duty cycle of the second waveform, that is, the duty cycle of the second waveform is less than the duty cycle of the first waveform.

[0084] In S103 , the control signal output circuit provides independent control signals to the plurality of waveform switching circuits respectively.

[0085] The control signal output circuit receives system instructions and transmits the instructions to corresponding waveform switching circuits. The multiple waveform switching circuits are connected in parallel with each other. The control signal output circuit can provide different control signals to the multiple waveform switching circuits to independently control the multiple waveform switching circuits.

[0086] In S105 , the plurality of waveform switching circuits provide waveforms to the plurality of driving circuit modules respectively.

[0087] According to an example embodiment, the multiple waveform switching circuits transmit the corresponding waveforms provided by the pulse width modulator to the multiple driving circuit modules according to the control signal provided by the control signal output circuit, and the multiple driving circuit modules respectively output amplified waveform signals according to the waveforms provided by the multiple waveform switching circuits.

[0088] In S107 , the plurality of driving circuit modules respectively drive the plurality of nozzles.

[0089] The multiple drive circuit modules respectively control the electromagnetic valves in the multiple nozzles, and the drive circuit modules amplify the voltage of the waveform provided by the waveform switching circuit to generate a sufficiently large current to drive the electromagnetic valves, thereby enabling the multiple drive circuit modules to respectively drive the multiple nozzles to complete the printing work.

[0090] According to the example embodiment, the driving system workflow of the entire inkjet device provides waveforms of different stages for the pulse width modulator, and transmits the driving signals of the waveforms of different stages to multiple waveform switching circuits. The control signal output circuit selects appropriate driving waveforms for the multiple waveform switching circuits, and then controls the nozzle through the driving circuit module to achieve printing.

[0091] In this exemplary embodiment, a more sophisticated nozzle control is achieved by combining the PWM mode with the open port of the driving system to the embedded software control. The software control mode of the open port can make the driving circuit more flexible, easier to update and improve, and match the inkjet device for various usage situations without replacing the hardware device.

[0092] Figure 3 FIG. 4 is a schematic diagram showing a waveform output by a pulse width modulator according to the prior art.

[0093] The DOD inkjet device has high power consumption and the drive voltage is difficult to adjust, so it is usually a factory fixed value. Figure 3 , the single waveform in the prior art can only be changed by adjusting the driving time, and can only achieve a fine-tuning printing effect.

[0094] The single waveform may cause the distance between the injection points to be too large, thus affecting the printing quality. The single waveform does not have a high enough precision in driving the nozzle, and cannot accurately control the ink droplet size, resulting in jitter or rough lines, thus limiting the printing effect. In addition, the ink droplets have poor ability to adhere to the surface, which not only leads to a decrease in printing quality but also shortens the life of the nozzle. The three pulse width modulators in this example embodiment can effectively solve this problem.

[0095] Figure 4 A waveform diagram showing the output of a pulse width modulator according to an exemplary embodiment of the present application is shown.

[0096] According to an exemplary embodiment, the first pulse width modulator 1-1, the second pulse width modulator 1-2 and the third pulse width modulator 1-3 respectively output three different waveforms suitable for different stages of the inkjet device, thereby driving multiple nozzles of the inkjet device.

[0097] See also Figure 4, the first pulse width modulator 1-1 outputs a first waveform, the second pulse width modulator 1-2 outputs a second waveform, and the third pulse width modulator 1-3 outputs a third waveform. The duty ratios and cycle times of the three different waveforms are independently set, and the duty ratio of the first waveform is greater than the duty ratio of the second waveform, that is, the duty ratio of the second waveform is less than the duty ratio of the first waveform. In this example, the three pulse width modulators output three different waveforms respectively, waveform 1 is a waveform with a duty ratio greater than or equal to 80% and less than or equal to 98%, waveform 2 is a waveform with a duty ratio greater than or equal to 12% and less than or equal to 28%, waveform 3 is a waveform with a duty ratio greater than or equal to 12% and less than or equal to 29%, waveform 3 is a reverse waveform, and the negative voltage accelerates the resetting of the nozzle, and at least one of the effects of energy saving, reducing energy consumption, reducing power consumption, reducing heat and increasing life, etc. is achieved through the proportion of different waveform spaces.

[0098] For example, the first waveform is a start-up waveform used for starting the nozzle. The first waveform has a higher duty cycle and provides relatively higher energy, so it is easier to eject ink droplets.

[0099] The second waveform is a holding waveform, which refers to a pulse waveform that exists after the inkjet device starts to spray ink and is used to maintain the operation of the nozzle. The duty cycle of the second waveform is relatively low, which can reduce power consumption and heat generation. At the same time, it can also extend the service life of the nozzle and maintain long-term stability.

[0100] The third waveform is a release waveform, which is a pulse waveform when the inkjet device stops inkjetting, and is used to release the nozzle so that it can be restored to its original state before the next inkjet cycle. The negative voltage in the third waveform helps to accelerate the reset process of the nozzle, thereby increasing the operating frequency of the inkjet device.

[0101] According to an exemplary embodiment, the first pulse width modulator 1-1, the second pulse width modulator 1-2, and the third pulse width modulator 1-3 provide three different waveforms to a plurality of waveform switching circuits 2-1, 2-2 ... 2-32. The plurality of waveform switching circuits 2-1, 2-2 ... 2-32 include a plurality of multiplexers for selecting one of the three different waveforms and connecting it to the plurality of driving circuit modules 3-1, 3-2 ... 3-32.

[0102] During the operation of the inkjet device, independent control signals are provided to the multiple waveform switching circuits 2-1, 2-2...2-32 respectively through the control signal output circuit 5, and the required waveforms are provided to the multiple driving circuit modules 3-1, 3-2...3-32, thereby driving the nozzle to operate and completing high-precision control of the inkjet device.

[0103] According to the example embodiment, by adjusting the duty cycle, cycle time and bias voltage in the output waveform through a pulse width modulator, the drive waveform can be flexibly adjusted according to actual conditions, thereby effectively improving the printing effect, increasing the precision and accuracy of printing, and improving the quality of printing while saving energy.

[0104] In this exemplary embodiment, the amount of ink in the nozzle is controlled by adjusting the pulse width, thereby controlling the number and size of ink dots, thereby achieving a more refined printing effect. By customizing the configuration of different waveforms, the operation of the nozzle is made smoother, thereby improving the printing quality.

[0105] According to the driving system for the inkjet device proposed in the present application, the pulse width modulation method is used to achieve accurate setting of the driving waveform, which expands the applicability to different printing materials. Due to the high adaptability of the DOD inkjet device to ink, the ink can be processed medicines, adhesives, nano silver and other new materials in addition to traditional inks. By changing different parameter options in the software settings, such as the working mode, the action of the nozzle is controlled, so that the working range of the inkjet device is wider and the printing accuracy is higher.

[0106] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0107] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0108] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0109] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0110] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0111] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a memory and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the methods of each embodiment of the present application.

[0112] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0113] The exemplary embodiments of the present application are specifically shown and described above. It should be understood that the present application is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present application is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended clauses.

Claims

1. A driving system for an inkjet device, characterized in that: The driving system includes at least two pulse width modulators, a plurality of waveform switching circuits, a plurality of driving circuit modules and a control signal output circuit, wherein: The at least two pulse width modulators are electrically connected to the plurality of waveform switching circuits respectively; The plurality of waveform switching circuits are respectively connected to the plurality of driving circuit modules; The plurality of driving circuit modules are electrically connected to the plurality of nozzles respectively, so as to drive the plurality of nozzles to realize printing; The outputs of the control signal output circuit are electrically connected to the plurality of waveform switching circuits, respectively, so as to provide independent control signals to the plurality of waveform switching circuits, respectively.

2. The drive system according to claim 1, characterized in that: The plurality of driving circuit modules output amplified waveform signals respectively according to the waveforms provided by the plurality of waveform switching circuits.

3. The drive system according to claim 1, characterized in that: The spray head comprises a solenoid valve type spray head.

4. The drive system according to claim 1, characterized in that: The at least two pulse width modulators include a first pulse width modulator, a second pulse width modulator, and a third pulse width modulator.

5. The drive system according to claim 4, characterized in that: The first pulse width modulator, the second pulse width modulator and the third pulse width modulator output three different waveforms, so as to be suitable for different stages of driving.

6. The drive system according to claim 5, characterized in that: The three different waveforms include: The first waveform output by the first pulse width modulator is a start-up waveform used for starting the nozzle; The second pulse width modulator outputs a second waveform, wherein the second waveform is a holding waveform and is used to maintain the operation of the nozzle; The third waveform output by the third pulse width modulator is a release waveform, which is used for releasing the nozzle.

7. The drive system according to claim 6, characterized in that: The duty ratio and cycle time of the three different waveforms are independently set; The duty cycle of the second waveform is smaller than the duty cycle of the first waveform.

8. The drive system according to claim 1, characterized in that: The plurality of waveform switching circuits include a plurality of multiplexers.

9. The drive system according to claim 1, characterized in that: The plurality of nozzles include thirty-two nozzles, and the thirty-two nozzles form a nozzle array.

10. An inkjet device, characterized in that: Comprising a drive system according to any one of claims 1-9.

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