Inkjet printing control device

Abstract

The utility model provides an ink-jet printing control device. The ink-jet printing control device comprises an ink cavity structure and a processing unit. The ink cavity structure comprises an ink cavity space formed by an ink cavity shell, a first dielectric layer and a spray hole, the first dielectric layer and the spray hole are arranged on the ink cavity shell, a heater is arranged in the first dielectric layer, and the spray hole is communicated with the ink cavity space; a first conductive layer prepared from a preset material is laid on the first dielectric layer, and the first conductive layer is connected with the processing unit to form a first target parameter detection structure; the first target parameter detection structure is used for collecting target parameters of the ink cavity structure and outputting the state of the ink cavity structure based on the target parameters. According to the ink-jet printing control device, the tantalum layer is arranged in the ink-jet printing control device through the MEMS technology, real-time collection and feedback of the residual ink amount and the temperature of the spray hole are achieved, the sensitivity and reliability of ink shortage detection are remarkably improved, and meanwhile the overall performance of printing equipment and the user experience are improved.

Description

Technical Field

[0001] This disclosure relates to the field of inkjet printing technology, and in particular to an inkjet printing control device. Background Technology

[0002] In modern inkjet printing technology, accurately detecting ink levels and the temperature of each nozzle is crucial for ensuring print quality and proper equipment operation. However, existing inkjet printing technologies cannot achieve real-time temperature detection and feedback at each nozzle level, and suffer from low sensitivity and high cost. Utility Model Content

[0003] The technical problem to be solved by this disclosure is to overcome the shortcomings of the prior art, which is unable to achieve real-time temperature detection and feedback at each nozzle level, and has low detection sensitivity and high cost, and to provide an inkjet printing control device.

[0004] This disclosure solves the above-mentioned technical problems through the following technical solution:

[0005] This disclosure provides an inkjet printing control device, which includes an ink chamber structure and a processing unit;

[0006] The ink cavity structure includes an ink cavity space formed by an ink cavity shell, a first medium layer disposed on the ink cavity shell, and a nozzle. A heater is provided in the first medium layer, and the nozzle communicates with the ink cavity space.

[0007] A first conductive layer made of a preset material is deposited on the first dielectric layer, and the first conductive layer is connected to the processing unit to form a first target parameter detection structure;

[0008] The first target parameter detection structure is used to collect the target parameters of the ink cavity structure and output the state of the ink cavity structure based on the target parameters.

[0009] Preferably, the nozzle, the ink cavity space, the first conductive layer, the first dielectric layer, the ink cavity housing, and the processing unit are arranged sequentially.

[0010] The coverage area of ​​the first conductive layer includes a contact area that contacts the ink cavity space;

[0011] The first conductive layer and the processing unit are connected by a via, which passes through the first dielectric layer and the ink cavity housing, and the via is far away from the contact area of ​​the ink cavity space.

[0012] Preferably, a first through hole is provided on the first dielectric layer and the ink cavity housing;

[0013] The first target parameter detection structure acts as a capacitor element, used to collect the capacitance value in the ink cavity space, and output the ink shortage status of the ink cavity structure based on the capacitance value.

[0014] Preferably, a plurality of the first vias are provided on the first dielectric layer and the ink cavity housing;

[0015] Each of the first vias is arranged in the same direction.

[0016] Preferably, a second through hole and a third through hole are provided on the first dielectric layer and the ink cavity housing;

[0017] The second via and the third via are symmetrically disposed on both sides of the ink cavity space;

[0018] The first target parameter detection structure acts as a thermistor element, used to collect the resistance value of the ink cavity structure, and output the temperature state of the ink cavity structure based on the resistance value.

[0019] Preferably, the first dielectric layer and the ink cavity housing are provided with a plurality of second vias and a plurality of third vias;

[0020] Each of the second vias is provided in the same direction;

[0021] Each of the third vias is provided in the same direction.

[0022] Preferably, a second conductive layer and a second dielectric layer made of the preset material are sequentially deposited between the ink cavity space and the first conductive layer;

[0023] The coverage area of ​​the second conductive layer includes the coverage area of ​​the first conductive layer;

[0024] The second conductive layer is connected to the processing unit through a fourth via to form a second target parameter detection structure;

[0025] The second target parameter detection structure acts as a capacitor element, used to collect the capacitance value in the ink cavity space, and output the ink shortage status of the ink cavity structure based on the capacitance value;

[0026] The fourth via is disposed on the second dielectric layer, the first dielectric layer and the ink cavity housing, and the fourth via is far away from the coverage area of ​​the first conductive layer.

[0027] Preferably, a plurality of the fourth vias are provided on the second dielectric layer, the first dielectric layer, and the ink cavity housing;

[0028] Each of the fourth vias is provided in the same direction.

[0029] Preferably, the preset material includes tantalum.

[0030] Preferably, the ink cavity structure includes a MEMS (microelectromechanical system) ink cavity structure.

[0031] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this disclosure.

[0032] The positive advancements of this disclosure are as follows: By employing MEMS technology to set a tantalum layer on the first dielectric layer and connecting it to an IC (integrated circuit) chip through vias, a first target parameter detection structure is formed to detect target parameters in the ink cavity space. This allows for real-time acquisition and feedback of the remaining ink level and nozzle temperature in the ink cavity space, and automatic adjustment of the drive waveform based on the detected temperature value. This improves print quality and enables accurate differentiation between ink-containing and ink-free states in the ink cavity. It not only significantly improves the sensitivity and reliability of ink shortage detection but also simplifies the structure and manufacturing process of the inkjet printing control device, reduces production costs, and enhances the overall performance and user experience of the printing equipment. Attached Figure Description

[0033] Figure 1 This is a schematic cross-sectional view of the inkjet printing control device in Embodiment 1 of this disclosure, divided along the first dividing line.

[0034] Figure 2 The top view and left view corresponding to the inkjet printing control device in Embodiment 1 of this disclosure are divided along the first dividing line.

[0035] Figure 3 This is a cross-sectional schematic diagram of the inkjet printing control device in Embodiment 2 of this disclosure;

[0036] Figure 4 This is a schematic diagram of the equivalent circuit of the first target parameter detection structure in Embodiment 2 of this disclosure;

[0037] Figure 5 This is a schematic cross-sectional view of the inkjet printing control device in Embodiment 3 of this disclosure, divided along the second dividing line.

[0038] Figure 6 The top and left views corresponding to the inkjet printing control device in Embodiment 3 of this disclosure are divided along the second dividing line.

[0039] Figure 7 This is a schematic diagram of the equivalent circuit of the first target parameter detection structure in Embodiment 3 of this disclosure;

[0040] Figure 8 This is a cross-sectional schematic diagram of the inkjet printing control device in Embodiment 4 of this disclosure. Detailed Implementation

[0041] The present disclosure is further illustrated below by way of embodiments, but the present disclosure is not limited to the scope of the embodiments described herein.

[0042] The prefixes such as "first" and "second" used in this disclosure are merely for distinguishing different descriptive objects and do not limit the position, order, priority, quantity, or content of the described objects. The use of ordinal numbers and other prefixes used to distinguish descriptive objects in this disclosure does not constitute a limitation on the described objects. The description of the described objects is given in the claims or the context of the embodiments, and should not constitute an unnecessary limitation due to the use of such prefixes. Furthermore, in the description of this embodiment, unless otherwise stated, "multiple" means two or more.

[0043] Example 1

[0044] This disclosure provides an inkjet printing control device, such as... Figure 1-2 As shown, the inkjet printing control device includes an ink chamber structure and a processing unit 1;

[0045] The ink cavity structure includes an ink cavity space 2 formed by an ink cavity shell 3, a first medium layer 4 disposed on the ink cavity shell 3, and a nozzle 5. A heater 41 is provided in the first medium layer 4, and the nozzle 5 is connected to the ink cavity space 2.

[0046] A first conductive layer 6 made of a preset material is laid on the first dielectric layer 4. The first conductive layer 6 is connected to the processing unit 1 to form a first target parameter detection structure.

[0047] The first target parameter detection structure is used to collect the target parameters of the ink cavity structure and output the state of the ink cavity structure based on the target parameters.

[0048] Specifically, a first dielectric layer 4 is set on the ink cavity housing 3 using MEMS technology, and a heater 41 is set in the first dielectric layer 4 to form a MEMS ink cavity structure, so as to heat the ink in the ink cavity space 2 and then eject the ink through the nozzle 5.

[0049] To improve the printing quality and overall performance of the inkjet printing control device by detecting target parameters (e.g., remaining ink level, nozzle 5 temperature, etc.) in the ink cavity structure, a first conductive layer 6 made of a preset material is covered on the first dielectric layer 4 and connected to the processing unit 1 (e.g., an IC chip). Since Ta (tantalum) has good electrical and thermal conductivity in MEMS processes, as well as good corrosion resistance and stability, a tantalum layer can be laid on the first dielectric layer 4 as the first conductive layer 6 using a Ta process. The conductivity of Ta is used in conjunction with the processing unit 1 to collect the target parameters. Then, based on the target parameters, the state of the ink cavity structure is output and the printing parameters are adjusted to ensure that the inkjet printing control device is in the optimal printing state.

[0050] In this embodiment, a corresponding first conductive layer 6 can be set in each printhead ink cavity to realize the acquisition of target parameters of each printhead ink cavity. Each first conductive layer 6 can be connected to the processing unit 1 or to different processing units 1. This specific embodiment does not limit this.

[0051] In one specific implementation, such as Figure 1-2 As shown, the nozzle 5, ink cavity space 2, first conductive layer 6, first dielectric layer 4, ink cavity housing 3 and processing unit 1 are arranged in sequence;

[0052] The coverage area of ​​the first conductive layer 6 includes the contact area that contacts the ink cavity space 2;

[0053] The first conductive layer 6 and the processing unit 1 are connected by a via 7, which passes through the first dielectric layer 4 and the ink cavity housing 3, and is far away from the contact area of ​​the ink cavity space 2.

[0054] Specifically, the tantalum layer laid on the first dielectric layer 4 can be connected to the IC chip through vias 7 that pass through the first dielectric layer 4 and the ink cavity housing 3. Microfabrication techniques can be used to form the vias 7 connecting the tantalum layer and the IC chip. To ensure accurate acquisition of target parameters, the first conductive layer 6 needs to cover the entire ink cavity space 2 and extend outwards. The vias 7 are placed in the area extending outwards from the ink cavity space 2, thereby avoiding leakage problems caused by contact between the vias 7 and the ink.

[0055] This embodiment uses MEMS technology to set a tantalum layer on the first dielectric layer and connect it to the IC chip through a via to form a first target parameter detection structure for detecting target parameters in the ink cavity space. This allows for real-time acquisition and feedback of target parameters in the ink cavity space, simplifying the structure and manufacturing process of the inkjet printing control device, reducing production costs, and improving the overall performance and user experience of the printing equipment.

[0056] Example 2

[0057] This embodiment is a further improvement on embodiment 1, such as... Figure 3-4 As shown, a first through hole 71 is provided on the first dielectric layer 4 and the ink cavity housing 3;

[0058] The first target parameter detection structure acts as a capacitor element, used to collect the capacitance value in the ink cavity space 2, and output the ink shortage status of the ink cavity structure based on the capacitance value.

[0059] Specifically, in order to collect the remaining ink amount in the ink cavity space 2, one side of the tantalum layer can be connected to the IC chip through the first via 71. Since the tantalum layer is a conductor, it forms a ground capacitance with the ground plane through a medium (e.g., ink / air / other process layers, etc.). The ink and air in the ink cavity space 2 are variables. Different amounts of ink remaining in the ink cavity space 2 will cause changes in the dielectric constant, which in turn will cause changes in the capacitance value received by the IC chip. Thus, the remaining ink amount can be obtained based on the capacitance value, and the status of whether ink is low can be output.

[0060] In the absence of ink, the dielectric constant of air causes a significant decrease in capacitance, which can accurately determine the two states of ink cavity space 2: when there is ink and when there is no ink. This significantly improves the sensitivity and reliability of ink shortage detection.

[0061] In one specific embodiment, a plurality of first through holes 71 are provided on the first dielectric layer 4 and the ink cavity housing 3;

[0062] Each first via 71 is set in the same direction.

[0063] Specifically, to further ensure the accuracy of ink remaining quantity detection, multiple first vias 71 can be set along the same direction to... Figure 3 For example, multiple first vias 71 can be sequentially arranged in a vertically inward direction, so that they together serve as wires at one end of the equivalent capacitor to transmit the capacitance value to ground to the IC chip. Therefore, even if the ink is unevenly distributed in the ink cavity, the corresponding capacitance value can be accurately obtained, while also avoiding the problem of the IC chip failing to receive the corresponding capacitance value due to a fault in one of the vias (e.g., uneven soldering).

[0064] This embodiment employs MEMS technology to deposit a tantalum layer on the first dielectric layer and connects it to the IC chip via a first via, forming a ground capacitance connected to the IC chip. This capacitance value is determined by the varying dielectric constants resulting from different ink levels in the ink cavity, accurately distinguishing between ink-containing and ink-free states. This significantly improves the sensitivity and reliability of ink shortage detection. Simultaneously, it simplifies the structure and manufacturing process of the inkjet printing control device, reduces production costs, and enhances the overall performance and user experience of the printing equipment.

[0065] Example 3

[0066] This embodiment is a further improvement on embodiment 1, such as... Figure 5-7 As shown, a second through hole 72 and a third through hole 73 are provided on the first dielectric layer 4 and the ink cavity housing 3;

[0067] The second through hole 72 and the third through hole 73 are symmetrically arranged on both sides of the ink cavity space 2;

[0068] The first target parameter detection structure acts as a thermistor element, used to collect the resistance value of the ink cavity structure and output the temperature status of the ink cavity structure based on the resistance value.

[0069] Specifically, to detect the temperature of nozzle 5, both sides of the tantalum layer can be connected to the IC chip via the second via 72 and the third via 73, respectively. Since the tantalum layer is a conductor, connecting both sides of the tantalum layer to the IC chip is equivalent to a thermistor. Because the temperature of nozzle 5 is conducted through heating by heater 41, the temperature of nozzle 5 can be determined by detecting the temperature of heater 41. When the temperature of heater 41 increases, the equivalent resistance of the tantalum layer also increases. The IC chip obtains the corresponding voltage change through resistor voltage division, and then converts the voltage-resistance relationship into a voltage-temperature relationship, thereby obtaining the temperature value of nozzle 5. Based on the nozzle 5 temperature value, the drive waveform of the inkjet printing control device is adjusted to ensure that the inkjet printing control device is in the optimal printing state.

[0070] In one specific embodiment, a plurality of second through holes 72 and a plurality of third through holes 73 are provided on the first dielectric layer 4 and the ink cavity housing 3;

[0071] Each second via 72 is provided in the same direction;

[0072] Each third via 73 is set in the same direction.

[0073] Specifically, to further ensure the accuracy of temperature detection at nozzle 5, multiple second vias 72 and third vias 73 can be respectively set on both sides of the ink cavity along the same direction, so as to... Figure 3 For example, multiple second vias 72 and multiple third vias 73 can be arranged sequentially in a vertically inward direction, so that the multiple second vias 72 together serve as the conductor at one end of the equivalent resistance, and the multiple third vias 73 together serve as the conductor at the other end of the equivalent resistance, so as to transmit the resistance value to the IC chip. This avoids the problem that the IC chip cannot receive the corresponding resistance value when one of the vias fails (e.g., uneven soldering).

[0074] This embodiment uses MEMS technology to set a tantalum layer on the first dielectric layer and connect it to the IC chip through the second and third vias to form a thermistor connected to the IC chip. It can determine the corresponding temperature value according to the different resistance values ​​caused by different temperature values, which improves the real-time performance and accuracy of nozzle temperature detection, realizes real-time temperature feedback for each nozzle, and automatically adjusts the drive waveform according to the detected temperature value, thereby improving print quality and also improving the overall performance of the printing equipment and user experience.

[0075] Example 4

[0076] This embodiment is a further improvement on embodiment 3, such as... Figure 8 As shown, a second conductive layer 8 and a second dielectric layer 9, made of a preset material, are also sequentially laid between the ink cavity space 2 and the first conductive layer 6.

[0077] The coverage area of ​​the second conductive layer 8 includes the coverage area of ​​the first conductive layer 6;

[0078] The second conductive layer 8 is connected to the processing unit 1 through the fourth via 74 to form the second target parameter detection structure;

[0079] The second target parameter detection structure acts as a capacitor element, used to collect the capacitance value in the ink cavity space 2, and output the ink shortage status of the ink cavity structure based on the capacitance value.

[0080] The fourth via 74 is disposed on the second dielectric layer 9, the first dielectric layer 4 and the ink cavity housing 3, and the fourth via 74 is far away from the coverage area of ​​the first conductive layer 6.

[0081] Specifically, to collect the remaining ink volume in the ink cavity and the temperature of the nozzle 5, a second conductive layer 8 can be added between the first conductive layer 6 and the ink cavity space 2, connected to the IC chip via a fourth via 74, to act as a capacitor element to collect the capacitance value in the ink cavity space 2. The first conductive layer 6 and the second conductive layer 8 are isolated by a second dielectric layer 9, and the coverage area of ​​the second conductive layer 8 is larger than that of the first conductive layer 6. The fourth via 74 is located outside the coverage area of ​​the first conductive layer 6, passing through the second dielectric layer 9, the first dielectric layer 4, and the ink cavity housing 3. This achieves both the collection of the remaining ink volume in the ink cavity and the temperature of the nozzle 5, and avoids mutual interference between the first conductive layer 6 and the second conductive layer 8. The principle of the second conductive layer 8 connecting to the processing unit 1 via the fourth via 74 to act as a capacitor element to collect the capacitance value in the ink cavity space 2 can be found in the description of the previous embodiment, and will not be repeated here.

[0082] In one specific embodiment, a plurality of fourth vias 74 are provided on the second dielectric layer 9, the first dielectric layer 4 and the ink cavity housing 3;

[0083] Each fourth via 74 is set in the same direction.

[0084] Specifically, multiple fourth vias 74 can be configured to connect the second conductive layer 8 and the IC chip, with the multiple fourth vias 74 arranged in the same direction to serve as one end of a capacitor element. The relevant principles can be found in the description of the foregoing embodiments, and will not be repeated here.

[0085] This embodiment employs MEMS technology to deposit a tantalum layer on the first dielectric layer 4 and connect it to the IC chip via the second via 72 and the third via 73, forming a thermistor connected to the IC chip. This thermistor can determine the corresponding temperature value based on the different resistance values ​​caused by different temperatures, improving the real-time performance and accuracy of the nozzle 5 temperature detection. It enables real-time temperature feedback for each nozzle 5 and automatically adjusts the drive waveform based on the detected temperature value, improving print quality. Simultaneously, a tantalum layer is deposited on the second dielectric layer 9 and connected to the IC chip via the fourth via 74, forming a ground capacitance connected to the IC chip. This capacitance value can be formed based on the different dielectric constants caused by different ink remaining amounts in the ink cavity space 2, thus accurately distinguishing between ink-containing and ink-free states in the ink cavity. This not only significantly improves the sensitivity and reliability of ink shortage detection but also simplifies the structure and manufacturing process of the inkjet printing control device, reduces production costs, and improves the overall performance and user experience of the printing equipment.

[0086] While specific embodiments of this disclosure have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this disclosure is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this disclosure, but all such changes and modifications fall within the scope of protection of this disclosure.

Claims

1. An inkjet printing control device, characterized in that, The inkjet printing control device includes an ink chamber structure and a processing unit; The ink cavity structure includes an ink cavity space formed by an ink cavity shell, a first medium layer disposed on the ink cavity shell, and a nozzle. A heater is provided in the first medium layer, and the nozzle communicates with the ink cavity space. A first conductive layer made of a preset material is deposited on the first dielectric layer, and the first conductive layer is connected to the processing unit to form a first target parameter detection structure; The first target parameter detection structure is used to collect the target parameters of the ink cavity structure and output the state of the ink cavity structure based on the target parameters.

2. The inkjet printing control device according to claim 1, characterized in that, The nozzle, the ink cavity space, the first conductive layer, the first dielectric layer, the ink cavity housing, and the processing unit are arranged sequentially. The coverage area of ​​the first conductive layer includes a contact area that contacts the ink cavity space; The first conductive layer and the processing unit are connected by a via, which passes through the first dielectric layer and the ink cavity housing, and the via is far away from the contact area of ​​the ink cavity space.

3. The inkjet printing control device according to claim 2, characterized in that, The first dielectric layer and the ink cavity housing are provided with a first through hole; The first target parameter detection structure acts as a capacitor element, used to collect the capacitance value in the ink cavity space, and output the ink shortage status of the ink cavity structure based on the capacitance value.

4. The inkjet printing control device according to claim 3, characterized in that, The first dielectric layer and the ink cavity housing are provided with a plurality of the first vias; Each of the first vias is arranged in the same direction.

5. The inkjet printing control device according to claim 2, characterized in that, The first dielectric layer and the ink cavity housing are provided with a second through hole and a third through hole; The second via and the third via are symmetrically disposed on both sides of the ink cavity space; The first target parameter detection structure acts as a thermistor element, used to collect the resistance value of the ink cavity structure, and output the temperature state of the ink cavity structure based on the resistance value.

6. The inkjet printing control device according to claim 5, characterized in that, The first dielectric layer and the ink cavity housing are provided with a plurality of second vias and a plurality of third vias; Each of the second vias is provided in the same direction; Each of the third vias is provided in the same direction.

7. The inkjet printing control device according to claim 5, characterized in that, A second conductive layer and a second dielectric layer made of the preset material are sequentially laid between the ink cavity space and the first conductive layer. The coverage area of ​​the second conductive layer includes the coverage area of ​​the first conductive layer; The second conductive layer is connected to the processing unit through a fourth via to form a second target parameter detection structure; The second target parameter detection structure acts as a capacitor element, used to collect the capacitance value in the ink cavity space, and output the ink shortage status of the ink cavity structure based on the capacitance value; The fourth via is disposed on the second dielectric layer, the first dielectric layer and the ink cavity housing, and the fourth via is far away from the coverage area of ​​the first conductive layer.

8. The inkjet printing control device according to claim 7, characterized in that, The second dielectric layer, the first dielectric layer, and the ink cavity housing are provided with a plurality of the fourth vias; Each of the fourth vias is provided in the same direction.

9. The inkjet printing control device according to any one of claims 1 to 8, characterized in that, The preset material includes tantalum.

10. The inkjet printing control device according to any one of claims 1 to 8, characterized in that, The ink cavity structure includes a MEMS ink cavity structure.

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