Ink droplet observation device and ink jet printer

Abstract

The utility model discloses an ink droplet observation device and an ink-jet printer. The ink droplet observation device comprises a light source unit, a camera unit and an ink box. Wherein the ink box is arranged between the light source unit and the camera unit, the ink box is of a deep groove type structure, the length of the ink box is larger than that of a spray head in the ink-jet printer, and the width of the ink box is larger than that of the spray head in the ink-jet printer so that ink droplets jetted by the spray head of the ink-jet printer and droplets of the ink droplets can be collected conveniently. The device can eliminate or reduce droplets, not only improves the precision of ink droplet observation, but also can prevent the ink droplets from flowing to a lens of a visual camera after being adhered or attached to the reflecting mirror to corrode the precise lens of the camera, thereby causing large loss.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of ink drop observation devices of inkjet printers, in particular to an ink drop observation device and an inkjet printer. BACKGROUND

[0002] At present, inkjet printing technology has a wide application basis in traditional fields. Nowadays, with the continuous progress of technology, it has gradually emerged in the fields of smart fabrics, electronic skin, biosensors, 3D electronic components, transparent electronic devices and other flexible electronic related fields, and the importance of inkjet printing technology in the field of flexible electronics manufacturing is increasingly prominent.

[0003] In various applications of inkjet printing technology, especially in the manufacturing process of high-precision products such as display screens, the core of the inkjet printing equipment is the inkjet printing unit, and the monitoring of flying ink drops plays a decisive role in the precision of inkjet printing. The precision of inkjet printing is directly related to the product quality, and the monitoring of flying ink drops is a key link to ensure this precision. In actual application, the flight state, speed, volume and other parameters of the flying ink drops need to be monitored in real time with high precision, so as to discover and correct possible problems in time, thereby ensuring the quality and consistency of the printed products. For example: CN115782404A Ink drop observation and collection device and method for integrated inkjet printing, discloses an ink drop observation device.

[0004] However, in actual application of the ink drop observation device, the problem of ink drop splashing occurs. The nozzle size of the inkjet head in the inkjet printer is microns, and the ink drops sprayed may splash, and the splashes may stick or adhere to the mirrors (camera mirror and light source mirror); especially the ink drops with color, after adhering to the mirror, the observation precision of the ink drop parameters will be affected; the observation error of the ink drop parameters will further affect the precision of the inkjet printer.

[0005] Therefore, an ink drop observation device and an inkjet printer capable of eliminating or reducing splashing are needed to solve the above problems. SUMMARY

[0006] The application provides an ink drop observation device and an inkjet printer, which can eliminate or reduce splashing, not only improve the precision of ink drop observation, but also avoid the splashing of ink drops sticking or adhering to the mirror and then flowing to the lens of the vision camera, corroding the precise camera lens and causing great loss.

[0007] The application discloses an ink drop observation device, which comprises a light source unit, a camera unit and an ink box.

[0008] In the above scheme, the problem of ink drop mist of the inkjet printer nozzle is solved. The size of the nozzle hole in the inkjet printer nozzle is micron level, and the ink drop ejected tends to be "mist" at the end section. The initial section of the ink drop ejected by the nozzle tends to be a straight line. That is, the ink box with a deep groove type is designed to provide sufficient space to eliminate the force of the ink drop mist, so that the ink drop and the ink drop mist stick or adhere in the ink box. After the ink box is collected, it is concentrated for processing. When the ink box is shallow, there is not enough space to eliminate the force of the ink drop mist, and the ink drop mist will escape from the ink box and adhere to the mirror. When the ink drop adhering to the mirror slowly increases, it will drop on the precise visual camera lens, causing damage to the camera lens (especially the ink drop with corrosion), causing loss (the precise camera lens is often expensive).

[0009] In a possible implementation, a horizontal baffle is arranged in the ink box, a plurality of small holes are formed in the horizontal baffle, and the horizontal baffle has a honeycomb structure. The horizontal baffle is arranged close to the bottom surface of the ink box.

[0010] In the above scheme, the horizontal baffle can be parallel to the bottom surface of the ink box, or the horizontal baffle can be inclined to the bottom surface of the ink box, that is, there is an inclination. Through the honeycomb structure of the horizontal baffle, the force of the ink drop mist can be further eliminated. The horizontal baffle arranged close to the bottom surface (the bottom of the ink box) can further play a role in adhering the ink drop mist to the horizontal baffle. After the ink drop mist enters the chamber (formed by the horizontal baffle and the ink box) from the small holes, the ink drop mist can be prevented from escaping from the chamber.

[0011] In a possible implementation, an inclined baffle group is arranged in the ink box, the inclined baffle group comprises two oppositely arranged inclined baffles, the length of the inclined baffles is the same as the length of the inner wall of the ink box, any one of the inclined baffles is inclined to the position of the bottom surface of the ink box, and the end of one inclined baffle close to the bottom of the ink box and the end of the other inclined baffle close to the bottom surface of the ink box form an opening structure.

[0012] In the above scheme, another way to further prevent ink droplet mist from escaping from the ink cartridge is provided. The airflow of the ink droplet mist tends to escape close to the inner wall of the ink cartridge. By arranging the inclined baffle group, an opening structure is formed by the inclined baffles. After the ink droplets enter the opening structure, the force of the ink droplet mist is dissipated by the inclined baffles on both sides; it can also further prevent the ink droplet mist from escaping the ink cartridge.

[0013] In a possible implementation, a plurality of inclined baffle groups are arranged in the ink cartridge. Any one of the inclined baffle groups includes two oppositely arranged inclined baffles, and the length of the inclined baffles is the same as the length of the inner wall of the ink cartridge. In any one of the inclined baffle groups, the inclined baffles are inclined to the position of the bottom surface of the ink droplet, and one end of one inclined baffle close to the bottom of the ink cartridge and one end of the other inclined baffle close to the bottom surface of the ink droplet form an opening structure. The opening width of the opening structure formed by the inclined baffle group close to the bottom of the ink droplet is smaller than the opening width of the opening structure formed by the inclined baffle group away from the bottom of the ink droplet.

[0014] In the above scheme, a scheme of arranging a plurality of inclined baffle groups is also disclosed. It can also further prevent the ink droplet mist from escaping the ink cartridge on the basis of the deep groove type ink cartridge. The inclination angle of the inclined baffle is not limited.

[0015] In a possible implementation, the opening width of the opening structure is greater than the width of the nozzle of the inkjet printer.

[0016] In the above scheme, the setting requirement of the opening width is explained. If the opening width is less than or equal to the width of the nozzle, the deep groove type ink cartridge needs to have a certain depth, which can further prevent the ink droplet mist from escaping the ink cartridge. When the opening width is greater than the width of the nozzle, the ink droplets can enter the internal space (the internal space formed by the inclined baffle and the ink cartridge) from the opening structure, which can further prevent the ink droplet mist from escaping the ink cartridge.

[0017] In a possible implementation, a plurality of small holes are formed on the inclined baffle to form a honeycomb structure.

[0018] In the above scheme, the inclined baffle can also be arranged as a honeycomb structure, which can also prevent the ink droplet mist from escaping the ink cartridge on the basis of the deep groove type ink cartridge.

[0019] In a possible implementation, the ink droplet observation device further includes a first movement unit connected to the camera unit, so that the first movement unit drives the camera unit to move in the vertical direction to adjust the focal length of the camera.

[0020] In the above scheme, the position of the camera unit in the vertical direction can be adjusted independently.

[0021] In a possible implementation, the ink drop observation device further comprises a second moving unit and a housing; wherein the second moving unit drives the light source unit and the camera unit to move in a vertical direction, so that when the ink drop observation device is in a working state, the second moving unit drives the mirrors of the light source unit and the camera unit to extend out of the surface of the housing; when the ink drop observation device is in a non-working state, the second moving unit drives the mirrors of the light source unit and the camera unit to retract into the interior of the housing.

[0022] In the above solution, it is intended to illustrate that when the ink drop observation device is in a non-working state, the mirrors of the light source unit and the camera unit retract into the interior of the housing, so as to avoid collision with the nozzle of the inkjet printer, thereby protecting the nozzle.

[0023] In a possible implementation, the ink drop observation device further comprises a protective mirror arranged at the mirrors of the camera unit and the light source unit, for avoiding ink drop splashes from landing on the mirrors.

[0024] In the above solution, the protective mirror is arranged, which not only protects the mirrors, but more importantly, protects the lens of the precision visual camera; and the protective mirror can facilitate maintenance, and a user can regularly wipe the protective mirror.

[0025] The second aspect of the present application discloses an inkjet printer comprising the ink drop observation device according to any one of the above embodiments.

[0026] The present application has the following beneficial effects:

[0027] The present application solves the problem of ink drop splashes of the nozzle of the inkjet printer. The size of the ejection hole in the nozzle of the inkjet printer is micron level, and the ink drop ejected tends to be in a mist shape at the end section, and the ink drop tends to be in a straight line at the initial section of being ejected by the nozzle; that is, a deep groove type ink cartridge can provide sufficient space to eliminate the force of the ink drop splashes, so that the ink drop and the ink drop splashes stick or adhere in the ink cartridge; after the ink cartridge is collected, the ink drop splashes are concentrated for processing. When the ink cartridge is shallow, there is not enough space to eliminate the force of the ink drop splashes, and the ink drop splashes will escape from the ink cartridge and adhere to the mirrors; when the ink drop sticking on the mirrors increases slowly, it will drop on the lens of the precision visual camera, causing damage to the camera lens (especially the ink drop with corrosive property), and causing loss (the precision camera lens is often expensive);

[0028] The horizontal baffle can be parallel to the bottom surface of the ink cartridge, and the horizontal baffle can also be non-parallel to the bottom surface of the ink cartridge, that is, there is some inclination. Through the honeycomb-shaped horizontal baffle, the force of the ink droplet mist can be further dissipated; the horizontal baffle close to the bottom surface of the ink cartridge (the bottom of the ink cartridge) can also further play a role in allowing the ink droplet mist to adhere to the horizontal baffle, and after the ink droplet mist enters the chamber (formed by the horizontal baffle and the ink cartridge) from the small hole, the ink droplet mist can be prevented from escaping the chamber;

[0029] Another way to further prevent the ink droplet mist from escaping the ink cartridge is provided. The airflow of the ink droplet mist tends to escape close to the inner wall of the ink cartridge, and by arranging the inclined baffle group, an opening structure is formed by the inclined baffles, and after the ink droplets enter from the opening structure, the forces of the ink droplet mist are dissipated by the inclined baffles on both sides; the ink droplet mist can also be further prevented from escaping the ink cartridge;

[0030] A scheme of arranging multiple inclined baffle groups is provided. Based on the deep groove type ink cartridge, the ink droplet mist can be further prevented from escaping the ink cartridge;

[0031] If the opening width is less than or equal to the width of the nozzle, the deep groove type ink cartridge needs to have a certain depth, which can further prevent the ink droplet mist from escaping the ink cartridge; when the opening width is greater than the width of the nozzle, the ink droplets can enter the internal space (formed by the inclined baffle and the ink cartridge) from the opening structure, which can further prevent the ink droplet mist from escaping the ink cartridge;

[0032] The inclined baffle can also be arranged in a honeycomb structure, which can prevent the ink droplet mist from escaping the ink cartridge based on the deep groove type ink cartridge;

[0033] The position of the camera unit in the vertical direction can be adjusted separately;

[0034] In a non-working state of the ink droplet observation device, the light source unit and the mirror of the camera unit are retracted into the interior of the housing, avoiding collision with the nozzle of the inkjet printer, thereby protecting the nozzle;

[0035] The protective mirror not only protects the mirror, but more importantly, protects the lens of the precision visual camera; and the protective mirror can be easily maintained, and the user can regularly wipe the protective mirror. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 A structure schematic diagram of an ink droplet observation device disclosed in the specification is provided;

[0037] Figure 2 A structure schematic diagram of another ink droplet observation device disclosed in the specification is provided;

[0038] Figure 3 A structure schematic diagram of a horizontal baffle in an ink cartridge disclosed in the specification is provided;

[0039] Figure 4 A structure diagram of a plurality of inclined baffle groups in an ink cartridge disclosed in the specification of the present application;

[0040] Figure 5 A structure diagram of a plurality of inclined baffle groups in an ink cartridge disclosed in the specification of the present application;

[0041] Figure 6 A principle diagram of focusing a camera disclosed in the specification of the present application;

[0042] Figure 7 A structure diagram of another ink drop observation device disclosed in the specification of the present application.

[0043] In the above-mentioned drawings: camera unit 100, light source unit 200, ink cartridge 300, light ray schematic line 201, first movement unit 400, second movement unit 500, shell 600, protective mirror 700, mirror mounting rack 800. DETAILED DESCRIPTION

[0044] In order for those skilled in the art to better understand the technical solutions in the specification, the technical solutions in the embodiments of the specification will be clearly and completely described below in conjunction with the drawings in the embodiments of the specification. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0045] In the description of the embodiments of the present application, the words such as "for example" or "for instance" are used to represent an example, illustration or explanation. Any embodiment or design scheme described as "for example" or "for instance" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words such as "for example" or "for instance" are intended to present the relevant concept in a specific way.

[0046] The specification discloses an ink drop observation device, as shown in Figure 1 , Figure 2 and Figure 7 . The ink drop observation device comprises a light source unit 200, a camera unit 100 and an ink cartridge 300. Among them, the ink cartridge 300 is arranged between the light source unit 200 and the camera unit 100, and the ink cartridge 300 is a deep groove type structure, the length of the ink cartridge 300 is greater than the length of the inkjet head in the inkjet printer, and the width (the width is the X-axis direction in Figure 6 ) of the ink cartridge 300 is greater than the width of the inkjet head in the inkjet printer, so as to collect the ink drops and the flying drops of the ink drops sprayed by the inkjet head of the inkjet printer.

[0047] This addresses the issue of ink droplet splatter in inkjet printer printheads. The nozzles in inkjet printers have micron-sized orifices, causing ink droplets to often appear as a "mist" at the end of their ejection, while initially propelled in a straight line. The solution is to design a deep-groove ink cartridge to provide sufficient space to dissipate the ink droplets, allowing them to adhere to the cartridge. The cartridge then collects and processes the droplets. If the cartridge is shallow, there isn't enough space to dissipate the droplets, causing them to escape and adhere to the reflector. As the number of droplets on the reflector increases, they can drip onto the delicate lens of a vision camera, damaging it (especially with corrosive droplets) and resulting in losses (precision camera lenses are often expensive).

[0048] Furthermore, negative pressure cannot be used to reduce ink droplet spray in the ink cartridge; negative pressure will disturb the flight path and shape of the ink droplets, thereby affecting the final ink droplet parameters and reducing the accuracy of ink droplet observation.

[0049] In one example, a horizontal baffle is installed inside the ink cartridge, with multiple small holes forming a honeycomb structure; the horizontal baffle is positioned near the bottom of the ink cartridge.

[0050] At this point, the horizontal baffle can be parallel to the bottom surface of the ink cartridge, or it can be non-parallel, meaning there is some angle between them. The honeycomb-shaped horizontal baffle further reduces the force of ink droplets; placing the horizontal baffle near the bottom of the ink cartridge also helps the ink droplets adhere to it. Furthermore, once the ink droplets enter the chamber (the chamber formed by the horizontal baffle and the ink cartridge) through the perforated holes, it prevents the ink droplets from escaping the chamber.

[0051] Furthermore, the dimensions of the horizontal baffle are the same as the inner wall dimensions of the ink cartridge; that is, the length of the horizontal baffle equals the length of the inner wall dimensions of the ink cartridge, and the width of the horizontal baffle equals the width of the inner wall dimensions of the ink cartridge. For example... Figure 3 As shown, Figure 3 The view is a schematic diagram of the width of the ink cartridge, showing a honeycomb pattern with multiple small holes in the horizontal baffle.

[0052] In one example, a set of tilting baffles is provided inside the ink cartridge. The set of tilting baffles includes two tilting baffles arranged opposite each other. The length of the tilting baffles is the same as the length of the inner wall of the ink cartridge. Either tilting baffle is tilted toward the bottom of the ink droplet, and one tilting baffle at the end near the bottom of the ink cartridge and the other tilting baffle at the end near the bottom of the ink droplet form an opening structure.

[0053] At this time, another way to further prevent ink droplet mist from escaping from the ink cartridge is provided. The airflow of the ink droplet mist tends to escape along the inner wall of the ink cartridge. By arranging the inclined baffle group, an opening structure is formed by the inclined baffles. After the ink droplet enters the opening structure, the force of the ink droplet mist is dissipated by the two inclined baffles on both sides. This can further prevent the ink droplet mist from escaping from the ink cartridge.

[0054] In one example, a plurality of inclined baffle groups are arranged in the ink cartridge. Any one inclined baffle group includes two oppositely arranged inclined baffles. The length of the inclined baffles is the same as the length of the inner wall of the ink cartridge. In any one inclined baffle group, the inclined baffles are inclined towards the position of the bottom surface of the ink droplet. One end of one inclined baffle near the bottom of the ink cartridge and one end of the other inclined baffle near the bottom surface of the ink droplet form an opening structure. The opening width of the opening structure formed by the inclined baffle group near the bottom of the ink droplet is smaller than the opening width of the opening structure formed by the inclined baffle group far from the bottom of the ink droplet.

[0055] At this time, a scheme for arranging a plurality of inclined baffle groups is also disclosed. This can further prevent the ink droplet mist from escaping from the ink cartridge based on the deep groove type ink cartridge. The inclination angle of the inclined baffles is not limited.

[0056] In addition, it should be noted that the number of inclined baffle groups is not limited in this specification. The number of inclined baffle groups can be set according to actual conditions. For example, Figure 5 For example, Figure 5 For the width side view of the ink cartridge and the inclined baffle group, Figure 5 Three groups of inclined baffle groups are shown. The opening width of the opening structure formed by the first group is H1, the opening width of the opening structure formed by the second group is H2, and the opening width of the opening structure formed by the third group is H3. H1>H2>H3. Assuming that the width of the inkjet head is h, H3>h.

[0057] In one example, the opening width of the opening structure is greater than the width of the inkjet head of the inkjet printer.

[0058] At this time, the setting requirement of the opening width is explained. If there is one opening structure, the opening width of the opening structure should be greater than the width of the inkjet head. If a plurality of opening structures are arranged, the opening width of any one opening structure should be greater than the width of the inkjet head. If the opening width is less than or equal to the width of the inkjet head, the deep groove type ink cartridge needs to have a certain depth, which can further prevent the ink droplet mist from escaping from the ink cartridge. When the opening width is greater than the width of the inkjet head, the ink droplet can enter the internal space (formed by the inclined baffles and the ink cartridge) from the opening structure, which can further prevent the ink droplet mist from escaping from the ink cartridge.

[0059] In one example, a plurality of small holes are formed on the inclined baffles, forming a honeycomb structure.

[0060] At this point, the inclined baffle can also be designed with a honeycomb structure, which, based on the deep-groove ink cartridge, can also prevent ink droplets from escaping the cartridge. For example... Figure 4 As shown, Figure 4 a and Figure 4 Each of b shows an inclined baffle assembly. Figure 4 Multiple small holes are opened on the inclined baffle in section a, forming a honeycomb structure; Figure 4 The inclined baffle in b does not have small holes. For example... Figure 5 As shown, Figure 5 a and Figure 5 Each of b shows three groups of inclined baffles. Figure 5 Multiple small holes are opened on the inclined baffle in section a, forming a honeycomb structure; Figure 5 The inclined baffle in b does not have small holes.

[0061] In one example, such as Figure 2 and Figure 7 The ink droplet observation device also includes a first motion unit 400, which is connected to the camera unit 100 so that the first motion unit 400 can drive the camera unit 100 to move in the vertical direction and adjust the focal length of the camera.

[0062] At this point, the aim is to demonstrate that the vertical position of the camera unit can be adjusted independently. The function of requiring independent adjustment of the camera unit will be explained. Figure 6 This is merely an example of the principle of camera focus adjustment.

[0063] like Figure 6 As shown, Figure 6 This is a schematic diagram of the ink cartridge and printhead on the width side. Light emitted from the light source unit is reflected by a mirror, then reflected by a mirror on the camera unit side, and finally enters the camera lens of the camera unit. The printhead includes multiple rows of nozzles. Figure 6 The number of nozzle columns shown is for illustrative purposes only. The camera's focal length differs when focusing on nozzles in column A and column B. In actual printhead observation, to ensure accuracy of droplet observation parameters, observations are performed column by column (the camera focal length for nozzles in the same column is considered the same). The accumulated distance between columns can be on the order of millimeters, which can affect the accuracy of droplet parameter observation. Existing solutions often use printhead movement along the X-axis for adjustment, but this movement carries the risk of collisions and should be minimized. Therefore, this specification uses a camera movement unit along the Z-axis to adjust the camera's focal length. Figure 6 The camera's focal length is adjusted to focus separately on the nozzles in column A and column B to observe the ink droplets.

[0064] In one example, such as Figure 7The ink drop observation device further comprises a second moving unit 500 and a housing 600; the second moving unit 500 drives the light source unit 200 and the camera unit 100 to move in the vertical direction (i.e. the Z-axis direction) so that when the ink drop observation device is in the working state, the second moving unit 500 drives the mirrors of the light source unit 200 and the camera unit 100 to extend out of the surface of the housing; when the ink drop observation device is in the non-working state, the second moving unit 500 drives the mirrors of the light source unit 200 and the camera unit 100 to retract into the interior of the housing. Figure 6

[0065] At this time, it is intended to illustrate that when the ink drop observation device is in the non-working state, the mirrors of the light source unit and the camera unit retract into the interior of the housing, avoiding collision with the nozzle of the inkjet printer, thereby protecting the nozzle. As shown in Figure 7 , the mirrors are located in the mirror mounting frame 800; the movement of the second moving unit 500 in the vertical direction drives the mirror mounting frame 800 and the mirrors inside it to move in the Z-axis direction.

[0066] In one example, the ink drop observation device further comprises a protective mirror arranged at the mirrors of the camera unit and the light source unit for avoiding ink drop splashes from falling on the mirrors.

[0067] At this time, the arrangement of the protective mirror not only protects the mirrors, but more importantly, protects the lenses of the precision vision camera; and it is also convenient for maintenance, and the user can regularly wipe the protective mirror. As shown in Figure 1 , the protective mirror 700 is arranged at the mirrors for protecting the mirrors and facilitating regular maintenance and wiping, and the light rays are shown by the dashed line 201 emitted from the light source unit 200 and entering the camera unit 100. As shown in Figure 6 , the dashed line at the mirror is a schematic protective mirror.

[0068] The present specification also discloses an inkjet printer comprising the ink drop observation device of any one of the above embodiments.

[0069] The inkjet printer here is also an inkjet printer system, which includes inkjet printing equipment and auxiliary equipment related to inkjet printing.

[0070] ​In the description of the application, it needs to be understood that the forward direction of "X" in the drawings represents the front, and correspondingly, the reverse direction of "X" represents the rear; the forward direction of "Y" represents the right, and correspondingly, the reverse direction of "Y" represents the left; the forward direction of "Z" represents the upper, and correspondingly, the reverse direction of "Z" represents the lower, the orientation or positional relationship indicated by the terms "X", "Y", "Z" and the like is based on the orientation or positional relationship shown in the drawings of the specification, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] In the description of the application, it needs to be understood that the orientation or positional relationship indicated by the terms "up", "down" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and is not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. Unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0072] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0073] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

Claims

1. An ink droplet observation apparatus characterized by comprising: The ink drop observation device comprises a light source unit, a camera unit and an ink box. The ink box is arranged between the light source unit and the camera unit, and has a deep groove structure, the length of the ink box is greater than the length of the ink jet head in the ink jet printer, and the width of the ink box is greater than the width of the ink jet head in the ink jet printer, so as to collect the ink drops and the splashes of the ink drops sprayed by the ink jet head of the ink jet printer.

2. The ink droplet observation apparatus according to claim 1, characterized by A horizontal baffle is arranged in the ink box, a plurality of small holes are arranged on the horizontal baffle, and the horizontal baffle has a honeycomb structure. The horizontal baffle is arranged close to the bottom surface of the ink box.

3. The ink droplet observation apparatus according to claim 1, wherein A group of inclined baffles is arranged in the ink box, the group of inclined baffles comprises two oppositely arranged inclined baffles, and the length of the inclined baffles is the same as the length of the inner wall of the ink box. Any one of the inclined baffles is inclined to the bottom surface of the ink drop, and one end of one inclined baffle close to the bottom of the ink box and one end of the other inclined baffle close to the bottom surface of the ink drop form an opening structure.

4. The ink droplet observation apparatus according to claim 1, characterized by A plurality of groups of inclined baffles are arranged in the ink box, any one of the groups of inclined baffles comprises two oppositely arranged inclined baffles, and the length of the inclined baffles is the same as the length of the inner wall of the ink box. Any one of the inclined baffles in the group of inclined baffles is inclined to the bottom surface of the ink drop, and one end of one inclined baffle close to the bottom of the ink box and one end of the other inclined baffle close to the bottom surface of the ink drop form an opening structure. The opening width of the opening structure formed by the group of inclined baffles close to the bottom of the ink drop is smaller than the opening width of the opening structure formed by the group of inclined baffles far away from the bottom of the ink drop.

5. The ink droplet observation apparatus according to claim 3 or 4, characterized by The opening width of the opening structure is greater than the width of the ink jet head of the ink jet printer.

6. The ink droplet observation apparatus according to claim 3 or 4, wherein A plurality of small holes are arranged on the inclined baffles, and the inclined baffles have a honeycomb structure.

7. The ink droplet observation apparatus according to any one of claims 1 to 4, wherein The ink drop observation device further comprises a first movement unit, the first movement unit is connected with the camera unit, so that the first movement unit drives the camera unit to move in the vertical direction, and adjusts the focal length of the camera.

8. The ink droplet observation apparatus according to any one of claims 1 to 4, wherein The ink drop observation device further comprises a second movement unit and a shell. The second movement unit drives the light source unit and the camera unit to move in the vertical direction, so that when the ink drop observation device is in the working state, the second movement unit drives the mirrors of the light source unit and the camera unit to extend out of the surface of the shell, and when the ink drop observation device is in the non-working state, the second movement unit drives the mirrors of the light source unit and the camera unit to retract into the interior of the shell.

9. The ink droplet observation apparatus according to any one of claims 1 to 4, wherein The ink drop observation device further comprises a protective mirror, the protective mirror is arranged at the mirrors of the camera unit and the light source unit, and is used for avoiding the ink drop splashes from splashing on the mirrors.

10. An inkjet printer characterized by comprising: The ink jet printer comprises the ink drop observation device according to any one of 1-9.

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