CN118144432A - Ink jet printing head and ink jet printing equipment - Google Patents
Ink jet printing head and ink jet printing equipment Download PDFInfo
- Publication number
- CN118144432A CN118144432A CN202410457848.0A CN202410457848A CN118144432A CN 118144432 A CN118144432 A CN 118144432A CN 202410457848 A CN202410457848 A CN 202410457848A CN 118144432 A CN118144432 A CN 118144432A
- Authority
- CN
- China
- Prior art keywords
- ink
- array
- holes
- inkjet printhead
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007641 inkjet printing Methods 0.000 title claims abstract description 54
- 238000004891 communication Methods 0.000 claims abstract description 28
- 230000009471 action Effects 0.000 claims abstract description 5
- 239000000919 ceramic Substances 0.000 claims description 36
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007639 printing Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 7
- 238000003491 array Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000007648 laser printing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000007651 thermal printing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17563—Ink filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/18—Ink recirculation systems
- B41J2/185—Ink-collectors; Ink-catchers
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
The application provides an inkjet printhead and an inkjet printing apparatus. The present application provides an inkjet printhead comprising: the device comprises a mounting seat, a piezoelectric driver, an ink supply device and a communication module; wherein, the ink supply device and the piezoelectric driver are sequentially arranged on the mounting seat from top to bottom; the piezoelectric driver has an ink channel array; the piezoelectric driver is used for deforming and extruding the ink in each ink channel in the ink channel array under the action of the electric signals so as to enable the ink to flow out of the ink channel; the ink supply device is provided with a guide plate, the guide plate is provided with a guide hole array matched with the ink channel array, and guide holes in the guide hole array are communicated with ink channels in the ink channel array; an ink supply device for introducing ink from the ink cartridge into the ink channel through the guide hole; the communication module is electrically connected with the piezoelectric driver through the guide plate and is used for providing electric signals for the piezoelectric driver. The ink jet printing head and the ink jet printing equipment provided by the application can conveniently and efficiently finish ink jet printing.
Description
Technical Field
The application relates to the technical field of ink-jet printing and dyeing, in particular to an ink-jet printing head and ink-jet printing equipment.
Background
With the continuous improvement of the performance of printing equipment, modern printing has the advantages of economy and flexibility, and is widely applied in the fields of families and small offices. The existing laser printing and thermal printing have higher requirements on printing conditions, so that the ink-jet printing becomes a more convenient printing scheme.
The ink jet printing head is a core component of ink jet printing and ink jet digital manufacturing technology, and the ink jet printing nozzle has the characteristics of no direct contact with a bearing object, clear and undistorted printed image and the like, and the ink jet technology is divided into two types of continuous type and on-demand type. The working principle of the on-demand ink jet technology is that the printer jets ink drops according to requirements, the existing ink jet technology not only consumes ink faster, but also needs to recycle the ink, thereby affecting the convenience of printing and increasing the printing cost.
Disclosure of Invention
In view of the above, the present application provides an inkjet printhead and an inkjet printing apparatus for performing inkjet printing conveniently and efficiently.
Specifically, the application is realized by the following technical scheme:
A first aspect of the present application provides an inkjet printhead comprising a mount, a piezoelectric driver, an ink supply, and a communication module; wherein,
The ink supply device and the piezoelectric driver are sequentially arranged on the mounting seat from top to bottom;
The piezoelectric driver has an array of ink vias; the piezoelectric driver is used for deforming and extruding the ink in each ink channel in the ink channel array under the action of the electric signal so as to enable the ink to flow out of the ink channel;
The ink supply device is provided with a guide plate, the guide plate is provided with a guide hole array matched with the ink channel array, and guide holes in the guide hole array are communicated with ink channels in the ink channel array; the ink supply device is used for guiding ink from the ink box into the ink channel through the flow guide hole;
The communication module is electrically connected with the piezoelectric driver through the guide plate and is used for providing the electric signal for the piezoelectric driver.
Optionally, the piezoelectric driver includes a piezoelectric ceramic body and a nozzle plate; wherein,
The piezoelectric ceramic body is provided with the ink channel array;
the nozzle plate is provided with a nozzle hole array matched with the ink channel array; the nozzle plate covers the bottom surface of the piezoelectric ceramic body so that ink channels in the ink channel array communicate with nozzle holes in the nozzle hole array.
Optionally, the piezoelectric ceramic body is provided with a through hole array penetrating along the width direction of the piezoelectric ceramic body; the through hole array extends along the length direction of the piezoelectric ceramic body and consists of first through holes and second through holes which are alternately arranged; wherein the length of the first type through holes in the thickness direction of the piezoelectric ceramic body is larger than the length of the second type through holes in the thickness direction of the piezoelectric ceramic body;
And the second type of through holes in the through hole array form the ink channel array.
Optionally, a first electrode is arranged in each second type through hole, a second electrode matched with each second type through hole is arranged on the top surface of the piezoelectric ceramic body, and a third electrode matched with each second electrode is arranged on one surface of the guide plate, facing the piezoelectric driver;
The communication module is provided with a fourth electrode matched with each third electrode, and the communication module is electrically connected with the piezoelectric ceramic through the fourth electrode, the third electrode and the second electrode.
Optionally, the communication module includes a data interface, a printed circuit board electrically connected to the data interface, and a flexible circuit board electrically connected to the printed circuit board; the fourth electrode is disposed on the flexible circuit board.
Optionally, each deflector aperture in the array of deflector apertures is a tapered deflector aperture.
Optionally, each nozzle hole in the array of nozzle holes is a tapered nozzle hole.
Optionally, the ink supply device comprises an ink inlet and an ink storage chamber communicated with the ink inlet; wherein,
The deflector forms a floor of the ink reservoir;
the ink supply device further includes a filter membrane provided in the ink reservoir chamber to divide the ink reservoir chamber into a first reservoir chamber for storing ink before filtration and a second reservoir chamber for storing ink after filtration.
Optionally, the mounting base comprises a housing and a base; wherein,
The data interface is arranged on the top surface of the shell; the printed circuit board and the flexible circuit board are arranged below the data interface in sequence;
the base is provided with a bottom plate, and an opening part is formed in the bottom plate; the ink supply device and the piezoelectric actuator are accommodated in the chassis, and a nozzle plate of the piezoelectric actuator is exposed through the opening.
Optionally, the inkjet printhead further comprises a protective backplane; the protective bottom plate is installed at the outer side of the bottom plate to protect the nozzle holes on the nozzle plate.
Optionally, the shell is provided with an ink tube fixing hole matched with the ink inlet, and the ink tube penetrates through the ink tube fixing hole to be connected with the ink inlet.
A second aspect of the present application provides an inkjet printing apparatus comprising an inkjet printhead according to any one of the first aspect of the present application.
The application provides an ink jet printing head and ink jet printing equipment, wherein an ink supply device and a piezoelectric driver are fixed by using a mounting seat, ink is led into an ink channel of the piezoelectric driver by the ink supply device, and then an electric signal is provided for the piezoelectric driver based on a communication module, so that the piezoelectric driver deforms and extrudes the ink in the ink channel, and the ink jet printing is completed. Therefore, the ink supply device can timely and reliably supply ink to the ink-jet printing head, and the piezoelectric driver can perform high-precision ink-jet when needed, so that the ink utilization rate can be reliably improved, and the quality of ink-jet printing is ensured.
Drawings
FIG. 1 is a schematic diagram of an inkjet printhead according to an exemplary embodiment of the present application;
FIG. 2 is an exploded view of an inkjet printhead according to an exemplary embodiment of the present application;
FIG. 3 is a cross-sectional view of an inkjet printhead according to an exemplary embodiment of the present application;
FIG. 4 is a schematic view of a mount according to an exemplary embodiment of the present application;
FIG. 5 is a partial schematic view of an ink supply device according to an exemplary embodiment of the present application;
FIG. 6 is a schematic view of an ink supply device according to an exemplary embodiment of the present application;
FIG. 7 is a cross-sectional view of an ink supply device according to an exemplary embodiment of the present application;
FIG. 8 is a schematic diagram of a piezoelectric actuator according to an exemplary embodiment of the present application;
FIG. 9 is a partial schematic view of a piezoelectric actuator according to an exemplary embodiment of the present application;
FIG. 10 is a diagram illustrating the assembly of a baffle and a piezoelectric actuator in accordance with an exemplary embodiment of the present application;
FIG. 11 is a schematic view of an electrode according to an exemplary embodiment of the present application;
FIG. 12 is a schematic diagram of a communication module shown in an exemplary embodiment of the application;
fig. 13 is a bottom view of a protective chassis according to an exemplary embodiment of the present application.
Reference numerals illustrate:
1: a mounting base;
11: a housing;
12: a base;
1401: an opening for a nozzle;
1402: a nozzle protection part;
2: a piezoelectric driver;
21: an array of ink vias;
22: a piezoelectric ceramic body;
23: a nozzle plate;
3: an ink supply device;
31: a deflector;
311: an array of flow directing holes;
32: an ink reservoir;
321: a first reservoir;
322: a second reservoir;
33: ink inlet
4: A communication module;
41: a flexible circuit board;
42: a data interface;
43: a printed circuit board.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this disclosure, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the application. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination" depending on the context.
The application provides an inkjet printing head and inkjet printing equipment, which are used for conveniently and efficiently completing inkjet printing.
The application provides an ink jet printing head and ink jet printing equipment, wherein an ink supply device and a piezoelectric driver are fixed by using a mounting seat, so that ink is guided into an ink channel of the piezoelectric driver by the ink supply device, and an electric signal is provided for the piezoelectric driver based on a communication module, so that the piezoelectric driver deforms and extrudes the ink in the ink channel, and the ink jet printing is completed. Therefore, the ink supply device can timely and reliably supply ink to the ink-jet printing head, and the piezoelectric driver can perform high-precision ink-jet when needed, so that the ink utilization rate can be reliably improved, and the quality of ink-jet printing is ensured.
Specific examples are given below to describe the technical solution of the present application in detail.
Fig. 1 is a schematic diagram of an inkjet printhead according to an exemplary embodiment of the present application. Fig. 2 is an exploded view of an inkjet printhead according to an exemplary embodiment of the present application. Fig. 3 is a cross-sectional view of an inkjet printhead according to an exemplary embodiment of the present application. Referring to fig. 1, 2 and 3, the inkjet printhead includes a mounting base 1, a piezoelectric driver 2, an ink supply device 3 and a communication module 4; wherein,
The ink supply device 3 and the piezoelectric driver 2 are sequentially mounted on the mounting base 1 in the order from top to bottom;
The piezoelectric driver 2 has an ink channel array 21; the piezoelectric driver 2 is configured to deform and squeeze the ink in each ink channel in the ink channel array 21 under the action of the electrical signal, so that the ink flows out of the ink channel;
The ink supply device 3 is provided with a guide plate 31, the guide plate 31 is provided with a guide hole array matched with the ink channel array 21, and guide holes in the guide hole array are communicated with ink channels in the ink channel array 21; the ink supply device 3 is used for guiding the ink from the ink box into the ink channel through the flow guide hole;
The communication module 4 is electrically connected to the piezoelectric driver 2 through the baffle 31, and is configured to provide the electrical signal to the piezoelectric driver 2.
Specifically, referring to fig. 3, the ink inlet communicates with the ink cartridge, ink from the ink cartridge enters the ink reservoir chamber 32 through the ink inlet, the piezoelectric actuator 2 is located below the ink reservoir chamber 32, and ink in the ink reservoir chamber 32 enters the ink channel array 21 of the piezoelectric actuator 2 through the guide hole array 311 on the guide plate 31; further, referring to fig. 2, the communication module 4 is electrically connected to the piezoelectric driver 2, and may provide an electrical signal to the piezoelectric driver 2.
Further, the piezoelectric driver 2 can deform under the action of the signal, so as to squeeze the ink in the ink channel to flow out, and drive the ink.
Alternatively, fig. 4 is a schematic view of a mounting base according to an exemplary embodiment of the present application. Referring to fig. 1 and fig. 4, the mounting base 1 includes a housing 11 and a base 12; wherein the housing 11 is used for fixing the communication module 4, and the base 12 is used for fixing the piezoelectric actuator 2 and the ink supply device 3.
Specifically, the specific shape and specific materials of the housing 11 and the base 12 may be set according to actual needs, and in this embodiment, this is not limited. For example, in one embodiment, the housing 11 and the base 12 may each be made of a high-hardness material.
Alternatively, fig. 5 is a partial schematic view of an ink supply device according to an exemplary embodiment of the present application. Fig. 6 is a schematic view of an ink supply apparatus according to an exemplary embodiment of the present application. Fig. 7 is a cross-sectional view of an ink supply device according to an exemplary embodiment of the present application. Referring to fig. 5, 6 and 7, in one possible implementation, the ink supply device 3 includes an ink inlet 33, and an ink reservoir 32 communicating with the ink inlet 33; wherein,
The baffle 31 forms a floor of the ink reservoir 32;
the ink supply device 3 further includes a filter membrane provided in the ink reservoir 32 to divide the ink reservoir 32 into a first reservoir 321 for storing ink before filtration and a second reservoir 322 for storing ink after filtration.
Specifically, the ink supply device 3 may be provided with two ink inlets 33, one for ink feeding and the other as an air outlet.
Further, referring to fig. 7, the ink supply device 3 includes a filter membrane that divides the ink storage chamber 32 into an upper portion and a lower portion, a first reservoir 321 before ink filtration, and a second reservoir 322 after ink filtration. The specific volumes and shapes of the first and second storage chambers 321 and 322 may be set according to actual needs, and in this embodiment, the present invention is not limited thereto. For example, the first reservoir 321 and the second reservoir 322 may be formed as two rectangular solids having the same volume.
Further, the ink input through the ink inlet 33 is stored through the first reservoir 321 and the second reservoir 322, and the ink is supplied to the piezoelectric actuator 2 through the baffle 31 to complete the inkjet printing.
Further, as shown in fig. 7, by providing the filter membrane, when ink flows into the ink inlet 33, the ink passes through the first reservoir 321, is filtered by the filter membrane, and flows into the second reservoir 322.
The specific material of the filtering membrane is determined according to actual needs, and this is not limited in this embodiment. For example, the filter membrane may be made of polycarbonate.
Thus, the filtering membrane filters the ink, ensures that the ink does not contain impurities or particles, prevents the ink from being blocked or damaged, and can improve the stability of the ink-jet printing head.
The ink jet print head provided in this embodiment flows in ink through the ink inlet of the ink jet device, and then flows in the first reservoir and the second reservoir, and then supplies the ink to the piezoelectric driver through the baffle plate to complete ink jet. Thus, the ink can be stably supplied to the piezoelectric driver through the ink supply device, the uniformity and the stability of the ink can be achieved through uniformly distributing the ink, and the performance and the reliability of the ink-jet printing can be improved. In addition, by providing the filter membrane, it is possible to ensure that the ink flowing into the piezoelectric actuator does not contain impurities or particles, to prevent clogging or damage, and to improve the stability of the inkjet printhead.
Alternatively, fig. 8 is a schematic diagram of a piezoelectric driver according to an exemplary embodiment of the present application. Referring to fig. 8, in one possible implementation of the present application, the piezoelectric actuator 2 includes a piezoelectric ceramic body 22 and a nozzle plate 23; wherein,
The piezoelectric ceramic body 22 is provided with the ink channel array 21;
The nozzle plate 23 is provided with an array of nozzle holes matching the ink channel array 21; the nozzle plate 23 is covered on the bottom surface of the piezoelectric ceramic body 22 so that the ink channels in the ink channel array 21 communicate with the nozzle holes in the nozzle hole array.
Specifically, the ink channel array 21 penetrates the piezoelectric ceramic body 22, and is designed to have a specific shape and arrangement manner, so as to ensure that ink can circulate, and ink flows and is distributed through the ink channel array 21, thereby realizing accurate ink ejection.
Further, the specific number, thickness, spacing, arrangement, etc. of the ink channels included in the ink channel array 21 are set according to actual needs, and are not limited in this embodiment.
Alternatively, fig. 9 is a partial schematic view of a piezoelectric actuator according to an exemplary embodiment of the present application. Referring to fig. 9, the piezoelectric ceramic body 22 is provided with an array of through holes penetrating along the width direction thereof; the through hole array extends along the length direction of the piezoelectric ceramic body 22, and is composed of first-type through holes and second-type through holes which are alternately arranged; wherein the length of the first type through holes in the thickness direction of the piezoelectric ceramic body 22 is longer than the length of the second type through holes in the thickness direction of the piezoelectric ceramic body;
The second type of vias in the array of vias constitutes the array of ink vias 21.
Specifically, the first type through holes and the second type through holes are both located on the piezoelectric ceramic body 22, and the through holes can be set to be long-strip-shaped, and ink is delivered to the piezoelectric driver 2 through the second type through holes. It should be noted that only the second type of through holes are used as ink channels for transferring ink, and the first type of through holes are not used for transferring ink.
Further, referring to fig. 9, the first type through holes are longer than the second type through holes in the thickness direction, and the first type through holes and the second type through holes are alternately arranged, so that the second type through holes for ink jet independently share a side surface, which is not shared with the first type through holes, are provided as an independent arm, in other words, the three-sided piezoelectric ceramics forming the second type through holes can independently control the second type through holes and are not interfered by other through holes, and thus, the ink jet efficiency can be improved.
When the second type through holes need to jet ink, the independent arms deform, and ink in the second type through holes is ejected.
According to the ink jet printing head provided by the embodiment, the independent arm is arranged for each second type through hole array, and then the second type through holes with the independent arms are used as ink channels to provide printing functions for the ink jet printing head, the independent arm is used for accurately controlling each ink channel, mutual independence among different ink channels is guaranteed, ink jet can be flexibly conducted, printing requirements of different application scenes are met, and flexibility and reliability of the ink jet printing head are improved.
Further, with continued reference to fig. 8, the nozzle hole arrays on the nozzle plate 23 correspond to the ink channel arrays 21, in other words, the nozzle hole arrays are outlets of two rows of the ink channel arrays 21, and each nozzle hole in the nozzle hole arrays communicates with an ink channel of the ink channel array 21. The number of nozzle holes in the nozzle hole array corresponds to the number of ink channels in the ink channel array 21.
Further, the nozzle plate 23 is a long thin plate-like substrate member, and has an array of nozzle holes arranged in a staggered manner thereon, wherein the nozzle holes are spaced one by one with respect to the ink channels. Further, the specific shape of the nozzle hole is determined according to actual needs, and in this embodiment, this is not limited. For example, in one embodiment, the nozzle orifice may be a tapered nozzle orifice, a funnel nozzle orifice, or a stepped-down nozzle orifice.
In particular, the nozzle plate 23 is mounted on the bottom surface of the piezoelectric ceramic body 22 to constitute the piezoelectric actuator 2.
According to the ink jet printer provided by the embodiment, the first type through holes and the second type through holes are formed in the piezoelectric ceramic body, then the second type through holes are used as ink channels for ink jet printing, and the independent arms forming the ink channels can be guaranteed.
Alternatively, fig. 10 is an assembly diagram of a baffle and a piezoelectric actuator according to an exemplary embodiment of the present application. Referring to fig. 10, fig. 10 shows the assembly relationship among the piezoelectric actuator 2, the baffle 31 and the flexible circuit board 41.
Specifically, the guide hole array 311 on the guide plate 31 is used to help guide the ink from the ink reservoir to the piezoelectric driver 2, and the ink can be ensured to flow along a preset path through the guide holes, so that the printing accuracy is ensured.
Further, the specific material of the baffle 31 is set according to actual needs, and this is not limited in this embodiment. For example, in one embodiment, the baffle 31 may be made of glass.
It should be noted that the number of the diversion holes included in the diversion hole array 311 is the same as the number of the second type of through holes, and the positions of the diversion holes are corresponding to each other, in other words, each diversion hole is opposite to one second type of through hole. In this way, the accurate flow of ink into the ink channel through the baffle 31 can be ensured, and the quality of printing is improved.
According to the ink jet printing head provided by the embodiment, the ink is provided for the ink channel array of the piezoelectric driver through the guide hole array on the guide plate, so that the ink flows along the set path, and the reliability of the ink jet printing head is ensured.
Further, fig. 11 is a schematic view of an electrode according to an exemplary embodiment of the present application. Wherein, the graph A in FIG. 8 is the distribution diagram of the upper electrode of the piezoelectric driver; fig. 8B shows the distribution of electrodes on a glass baffle. Fig. 8C is a diagram showing the distribution of electrodes on a flexible circuit board. Referring to fig. 8, a first electrode is disposed in each second type through hole, a second electrode matched with each second type through hole is disposed on the top surface of the piezoelectric ceramic body, and a third electrode matched with each second electrode is disposed on a surface of the flow guide plate facing the piezoelectric driver;
The communication module is provided with a fourth electrode matched with each third electrode, and the communication module is electrically connected with the piezoelectric ceramic through the fourth electrode, the third electrode and the second electrode.
Specifically, referring to fig. 8 a, a first electrode is disposed in the second type through hole of the piezoelectric actuator 2, and a second electrode is disposed on the top surface of the piezoelectric ceramic body 22, and the second electrodes are disposed on three surfaces inside the second type through hole.
In particular, when the first electrode and the second electrode provide electrical signals for the piezoelectric ceramic body 22, each independent arm can be controlled to deform so as to spray the ink in the second type through hole, and printing is completed.
Further, referring to fig. 8B, a third electrode matching with the second electrode is disposed on the baffle 31, in other words, each baffle hole on the baffle 31 corresponds to a third electrode, the third electrode is communicated with the second electrode connected to the second type through hole corresponding to the baffle hole, and the electric signal transmitted by the third motor can be transmitted to the corresponding second electrode and further to the first electrode.
Specifically, the baffle 31 is provided in a state of being attached to the top surface (the side on which the second electrode is provided) of the piezoelectric actuator 2; the baffle 31 has third electrodes on the side facing the piezoelectric actuator 2, which are in one-to-one correspondence with the second electrodes on the top surface of the piezoelectric actuator.
Similarly, referring to fig. 8C, a fourth electrode corresponding to the third electrode is provided on the flexible circuit board 41 in the communication module 4, and an electric signal is transmitted through the fourth electrode to the third electrode, the second electrode, and the first electrode. When an electric signal is applied to the first electrode through the fourth electrode, the third electrode, and the second electrode, a shear mode type displacement is repeatedly performed by the adjacent ink path wall portion as a driving wall, thereby applying a pressure to the ink in the ink path.
The ink jet printing head provided by the embodiment transmits electric signals sequentially through the fourth electrode, the third electrode, the second electrode and the first electrode, and controls the piezoelectric driver to jet ink to finish ink jet printing.
Optionally, fig. 12 is a schematic diagram of a communication module according to an exemplary embodiment of the present application. Referring to fig. 12, in an alternative embodiment of the present application, the communication module 4 includes a data interface 42, a printed circuit board 43 electrically connected to the data interface 42, and a flexible circuit board 41 electrically connected to the printed circuit board 43; the fourth electrode is provided on the flexible circuit board 41.
Specifically, the data interface 42 is connected to an external device, and electrical signals can be transmitted through the data interface 42 to control the operation state and printing operation of the inkjet printhead.
Further, the flexible circuit board 41 is a circuit board having flexibility and bendability, and is composed of a flexible base material and a conductive material. In particular, the specific material and shape of the flexible circuit board 41 are set according to actual needs, and this is not limited in this embodiment. For example, in one embodiment, the flexible circuit board 41 may be made of a polyester film laminated with a metal film, which is wide at the top and narrow at the bottom.
Further, a printed circuit board 43 is provided between the data interface 42 and the flexible circuit board 41 for providing electrical connection and mechanical support. When the printed circuit board receives the electrical signal of the data interface 42, the electrical signal is transmitted to the flexible circuit board 41, thereby providing the electrical signal to the piezoelectric driver 2.
Specifically, it is understood that the flexible circuit board 41 is disposed between the baffle 31 and the printed circuit board 43 for extracting the third electrode of the baffle 31 to the printed circuit board 43. The flexible circuit board 41 has fourth electrodes electrically connected to the third electrodes in one-to-one correspondence.
The ink jet printing head provided by the embodiment receives data through the data interface, and then sequentially passes through the printed circuit board and the flexible circuit board, and provides electric signals for the piezoelectric driver based on the flexible circuit board. Thus, the stable operation of the piezoelectric driver is ensured through the communication module.
With continued reference to fig. 4, in an alternative embodiment of the present application, the mounting base 1 includes a housing 11 and a base 12; wherein the data interface 42 is provided on the top surface of the housing 11; the printed circuit board 43 and the flexible circuit board 41 are disposed in order below the data interface 42;
The base 12 is provided with a bottom plate, and an opening part is formed in the bottom plate; the ink supply device 3 and the piezoelectric actuator 2 are housed in the chassis 12, and the nozzle plate 23 of the piezoelectric actuator 2 is exposed through the opening.
Specifically, the mounting frame and the bottom plate of the mounting base 1 may fix the piezoelectric actuator 2, the ink supply device 3, and the communication module 4. In particular, the ink inlet 33 of the ink supply device 3 may be mounted and fixed to the base 12 by gluing. The nozzle plate of the piezo actuator 2 may be fixed to the base 12 by means of gluing.
Further, the opening in the base plate corresponds to the nozzle plate 23 of the piezoelectric actuator 2. In particular, the nozzle plate 23 may be fixed to the base plate and the nozzle plate 23 may be ensured to be capable of performing ink jet printing through the base plate.
The inkjet printhead provided in this embodiment fixes each portion through the mount pad, and can guarantee the reliability and the stability of the inkjet printhead.
Optionally, referring to fig. 4, the housing 11 has an ink tube fixing hole matched with the ink inlet 33, and the ink tube passes through the ink tube fixing hole to be connected with the ink inlet 33.
Specifically, the ink tube fixing holes can fix and comb the ink tube to a certain extent, so that the ink tube can only move in a certain space, and the stability of the ink tube is ensured.
According to the ink jet printing head provided by the embodiment, the ink tube is fixed through the ink tube fixing hole on the shell, so that the ink conveying channel is more stable and firm, the guarantee is provided for conveying the ink, and the reliability of the ink jet printing head is improved.
Optionally, fig. 13 is a bottom view of a protective chassis according to an exemplary embodiment of the present application. Specifically, fig. 13a is an assembly relationship diagram of the protection base plate and the base, and fig. 13b is a schematic diagram of the protection base plate. Referring to fig. 13, the inkjet printhead further includes a protective chassis; the protective bottom plate is installed at the outer side of the bottom plate to protect the nozzle holes on the nozzle plate.
Specifically, the bottom end of the protective bottom plate is provided with an opening part for ensuring that ink of the ink-jet printing head can be normally ejected. Further, the ink jet print head can be protected by the protective bottom plate, and the ink jet print head is prevented from being damaged.
The protective base plate is mounted on the outer side of the base plate, can be fixed by gluing, and is provided with an opening 1401 for a nozzle, a nozzle protection part 1042, and the nozzle protection part 1042 protrudes by 1.5-2 mm, so that the nozzle can be prevented from being scratched by paper in the printing process of the nozzle. The protective bottom plate can be made of stainless steel material by stamping.
According to the ink-jet printing head provided by the embodiment, the ink-jet printing head is protected through the protection bottom plate, damage to the ink-jet printing head is prevented, and the performance of the ink-jet printing head is improved.
The present application also provides an inkjet printing apparatus, the inkjet printing apparatus comprising an inkjet printhead as described in any one of the above.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the application.
Claims (12)
1. An inkjet printhead, the inkjet printhead comprising a mount, a piezoelectric driver, an ink supply, and a communication module; wherein,
The ink supply device and the piezoelectric driver are sequentially arranged on the mounting seat from top to bottom;
The piezoelectric driver has an array of ink vias; the piezoelectric driver is used for deforming and extruding the ink in each ink channel in the ink channel array under the action of the electric signal so as to enable the ink to flow out of the ink channel;
The ink supply device is provided with a guide plate, the guide plate is provided with a guide hole array matched with the ink channel array, and guide holes in the guide hole array are communicated with ink channels in the ink channel array; the ink supply device is used for guiding ink from the ink box into the ink channel through the flow guide hole;
The communication module is electrically connected with the piezoelectric driver through the guide plate and is used for providing the electric signal for the piezoelectric driver.
2. The inkjet printhead of claim 1, wherein said piezoelectric actuator comprises a piezoelectric ceramic body and a nozzle plate; wherein,
The piezoelectric ceramic body is provided with the ink channel array;
the nozzle plate is provided with a nozzle hole array matched with the ink channel array; the nozzle plate covers the bottom surface of the piezoelectric ceramic body so that ink channels in the ink channel array communicate with nozzle holes in the nozzle hole array.
3. The inkjet printhead of claim 2, wherein said piezoelectric ceramic body is provided with an array of through holes penetrating in a width direction thereof; the through hole array extends along the length direction of the piezoelectric ceramic body and consists of first through holes and second through holes which are alternately arranged; wherein the length of the first type through holes in the thickness direction of the piezoelectric ceramic body is larger than the length of the second type through holes in the thickness direction of the piezoelectric ceramic body;
And the second type of through holes in the through hole array form the ink channel array.
4. An inkjet printhead according to claim 3 wherein a first electrode is provided in each of the second type of through holes, a second electrode is provided on the top surface of the piezoelectric ceramic body which mates with each of the second type of through holes, and a third electrode is provided on the side of the baffle which faces the piezoelectric actuator which mates with each of the second electrodes;
The communication module is provided with a fourth electrode matched with each third electrode, and the communication module is electrically connected with the piezoelectric ceramic through the fourth electrode, the third electrode and the second electrode.
5. The inkjet printhead of claim 4, wherein said communication module comprises a data interface, a printed circuit board electrically connected to said data interface, and a flexible circuit board electrically connected to said printed circuit board; the fourth electrode is disposed on the flexible circuit board.
6. The inkjet printhead of claim 1, wherein each deflector aperture in the array of deflector apertures is a tapered deflector aperture.
7. The inkjet printhead of claim 2, wherein each nozzle aperture in said array of nozzle apertures is a tapered nozzle aperture.
8. The inkjet printhead of claim 5, wherein said ink supply includes an ink inlet, an ink reservoir in communication with said ink inlet; wherein,
The deflector forms a floor of the ink reservoir;
the ink supply device further includes a filter membrane provided in the ink reservoir chamber to divide the ink reservoir chamber into a first reservoir chamber for storing ink before filtration and a second reservoir chamber for storing ink after filtration.
9. The inkjet printhead of claim 8, wherein said mount comprises a housing and a base; wherein,
The data interface is arranged on the top surface of the shell; the printed circuit board and the flexible circuit board are arranged below the data interface in sequence;
the base is provided with a bottom plate, and an opening part is formed in the bottom plate; the ink supply device and the piezoelectric actuator are accommodated in the chassis, and a nozzle plate of the piezoelectric actuator is exposed through the opening.
10. The inkjet printhead of claim 9, wherein the inkjet printhead further comprises a protective floor; the protective bottom plate is installed at the outer side of the bottom plate to protect the nozzle holes on the nozzle plate.
11. The inkjet printhead of claim 10 wherein said housing has an ink tube mounting aperture therethrough mated with said ink inlet, an ink tube passing through said ink tube mounting aperture and being connected to said ink inlet.
12. An inkjet printing apparatus, characterized in that it comprises an inkjet printhead according to claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410457848.0A CN118144432A (en) | 2024-04-16 | 2024-04-16 | Ink jet printing head and ink jet printing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410457848.0A CN118144432A (en) | 2024-04-16 | 2024-04-16 | Ink jet printing head and ink jet printing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118144432A true CN118144432A (en) | 2024-06-07 |
Family
ID=91300687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410457848.0A Pending CN118144432A (en) | 2024-04-16 | 2024-04-16 | Ink jet printing head and ink jet printing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118144432A (en) |
-
2024
- 2024-04-16 CN CN202410457848.0A patent/CN118144432A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4764419B2 (en) | Mounting assembly | |
| JP3542389B2 (en) | Parallel printing apparatus and manufacturing method thereof | |
| US5771052A (en) | Single pass ink jet printer with offset ink jet modules | |
| US7614733B2 (en) | Filter for printhead assembly | |
| US20090295867A1 (en) | Liquid ejecting head unit and liquid ejecting apparatus | |
| KR20080035474A (en) | Liquid ejecting apparatus | |
| EP1226036B1 (en) | Inkjet print head | |
| EP2835261B1 (en) | Liquid ejecting head and liquid ejecting apparatus | |
| US20200171828A1 (en) | Liquid discharge head and liquid discharge apparatus | |
| JP2004148827A (en) | Print head assembly and method of forming the same | |
| EP1078769B1 (en) | Print element and method for assembling a print head | |
| EP2195171A1 (en) | Cartridge holder | |
| JPH10305592A (en) | Ink delivery system utilizing separate insertable filter carrier | |
| CN118144432A (en) | Ink jet printing head and ink jet printing equipment | |
| JP7275571B2 (en) | Liquid ejecting head and liquid ejecting apparatus | |
| EP3587117B1 (en) | Liquid ejecting head and liquid ejecting apparatus | |
| US7494215B2 (en) | Multiple chamber ink cartridge | |
| CN118107280A (en) | Ink jet printing head and ink jet printing equipment | |
| JP6264549B2 (en) | Liquid ejecting head and liquid ejecting apparatus | |
| CN109641461B (en) | Liquid ejection head and recording apparatus | |
| US20100123757A1 (en) | Liquid ejecting head and liquid ejecting apparatus | |
| JP2014193550A (en) | Liquid jet head and liquid jet device | |
| US20060171823A1 (en) | Inkjet head | |
| US20240181777A1 (en) | Liquid ejection head | |
| CN118254470A (en) | Ink jet printing head and ink jet printing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |